<?php
namespace controls;
class Cron
{
  static public function cron_products()
  {
    global $mdb, $settings;
    self::touch_cron_invocation( __FUNCTION__ );

    $api = new \services\GoogleAdsApi();
    if ( !$api -> is_configured() )
    {
      echo json_encode( [ 'result' => 'Google Ads API nie jest skonfigurowane. Uzupelnij dane w Ustawieniach.' ] );
      exit;
    }

    $date = \S::get( 'date' ) ? date( 'Y-m-d', strtotime( \S::get( 'date' ) ) ) : date( 'Y-m-d', strtotime( '-1 days' ) );
    $conversion_window_days = self::get_conversion_window_days();
    $import_dates = self::build_backfill_dates( $date, $conversion_window_days );
    $client_id = (int) \S::get( 'client_id' );

    if ( $client_id > 0 )
    {
      $client = $mdb -> get( 'clients', '*', [ 'AND' => [
        'id' => $client_id,
        'google_ads_customer_id[!]' => null,
        'deleted' => 0
      ] ] );

      if ( !$client || trim( (string) $client['google_ads_customer_id'] ) === '' )
      {
        echo json_encode( [ 'result' => 'Nie znaleziono klienta z poprawnym Google Ads Customer ID.', 'client_id' => $client_id ] );
        exit;
      }

      $sync = self::sync_products_fetch_for_client( $client, $api, $date );
      $history_30 = self::aggregate_products_history_30_for_client( (int) $client['id'], $date );
      $temp_rows = self::rebuild_products_temp_for_client( (int) $client['id'] );

      echo json_encode( [
        'result' => empty( $sync['errors'] ) ? 'Synchronizacja produktow zakonczona.' : 'Synchronizacja produktow zakonczona z bledami.',
        'client_id' => (int) $client['id'],
        'date' => $date,
        'active_date' => $date,
        'phase' => 'single_full',
        'processed_products' => (int) $sync['processed_products'],
        'skipped' => (int) $sync['skipped'],
        'fetch_skipped_reason' => isset( $sync['fetch_skipped_reason'] ) ? (string) $sync['fetch_skipped_reason'] : '',
        'history_30_products' => (int) $history_30,
        'products_temp_rows' => (int) $temp_rows,
        'errors' => $sync['errors']
      ] );
      exit;
    }

    self::cleanup_old_sync_rows( 30 );

    $client_ids = $mdb -> query( "SELECT c.id
      FROM clients c
      WHERE c.deleted = 0
        AND c.google_ads_customer_id IS NOT NULL
        AND c.google_ads_customer_id <> ''
        AND (
          NOT EXISTS ( SELECT 1 FROM campaigns cp WHERE cp.client_id = c.id )
          OR EXISTS (
            SELECT 1
            FROM campaigns cp
            WHERE cp.client_id = c.id
              AND cp.campaign_id > 0
              AND ( cp.campaign_name IS NULL OR cp.campaign_name <> '--- konto ---' )
          )
        )
      ORDER BY c.id ASC" ) -> fetchAll( \PDO::FETCH_COLUMN );
    $client_ids = array_values( array_unique( array_map( 'intval', $client_ids ) ) );

    if ( empty( $client_ids ) )
    {
      echo json_encode( [ 'result' => 'Brak klientow z ustawionym Google Ads Customer ID do przetworzenia.', 'processed_clients' => 0, 'errors' => [] ] );
      exit;
    }

    self::ensure_sync_rows( 'products', $import_dates, $client_ids );

    $active_client_id = self::get_active_client( 'products' );

    if ( !$active_client_id )
    {
      echo json_encode( [
        'result' => 'Pipeline cron_products jest zakonczony dla calego okna dat.',
        'date' => $date,
        'conversion_window_days' => $conversion_window_days,
        'dates_synced' => $import_dates,
        'phase' => 'done',
        'total_clients' => count( $client_ids )
      ] );
      exit;
    }

    $source_phase = self::determine_client_products_phase( $active_client_id );

    if ( !$source_phase )
    {
      echo json_encode( [
        'result' => 'Brak dat do przetworzenia dla klienta ID: ' . $active_client_id,
        'date' => $date,
        'active_client_id' => $active_client_id,
        'phase' => 'done',
        'total_clients' => count( $client_ids )
      ] );
      exit;
    }

    $phase_next_map = [
      'pending'      => 'fetch',
      'fetch'        => 'aggregate_30',
      'aggregate_30' => 'done'
    ];
    $next_phase = $phase_next_map[ $source_phase ] ?? 'done';

    $dates_per_run_default = (int) ( $settings['cron_products_clients_per_run'] ?? 10 );
    if ( $dates_per_run_default <= 0 )
    {
      $dates_per_run_default = 10;
    }

    $dates_per_run = (int) \S::get( 'clients_per_run' );
    if ( $dates_per_run <= 0 )
    {
      $dates_per_run = $dates_per_run_default;
    }
    $dates_per_run = min( 100, $dates_per_run );

    $dates_batch = self::get_pending_dates_for_client( 'products', $active_client_id, $source_phase, $dates_per_run );

    if ( empty( $dates_batch ) )
    {
      echo json_encode( [
        'result' => 'Faza zakonczona dla klienta. Kolejne wywolanie przejdzie do nastepnej fazy lub klienta.',
        'date' => $date,
        'active_client_id' => $active_client_id,
        'conversion_window_days' => $conversion_window_days,
        'phase' => $source_phase,
        'total_clients' => count( $client_ids )
      ] );
      exit;
    }

    $selected_client = $mdb -> get( 'clients', '*', [ 'id' => $active_client_id ] );
    if ( !$selected_client )
    {
      echo json_encode( [
        'result' => 'Nie udalo sie znalezc klienta do synchronizacji produktow. ID: ' . $active_client_id,
        'active_client_id' => $active_client_id,
        'errors' => [ 'Klient ID ' . $active_client_id . ' nie znaleziony.' ]
      ] );
      exit;
    }

    $dates_processed_in_call = [];
    $errors = [];
    $processed_products_total = 0;
    $skipped_total = 0;
    $fetch_skipped_reasons = [];
    $history_30_products_total = 0;
    $products_temp_rows_total = 0;

    if ( $source_phase === 'aggregate_30' )
    {
      $products_temp_rows_total += (int) self::rebuild_products_temp_for_client( $active_client_id );

      foreach ( $dates_batch as $active_date )
      {
        self::mark_sync_phase( 'products', $active_date, $active_client_id, 'done' );
        $dates_processed_in_call[] = $active_date;
      }
    }
    else
    {
      foreach ( $dates_batch as $active_date )
      {
        $error_msg = null;

        if ( $source_phase === 'pending' )
        {
          $sync = self::sync_products_fetch_for_client( $selected_client, $api, $active_date );
          $processed_products_total += (int) ( $sync['processed_products'] ?? 0 );
          $skipped_total += (int) ( $sync['skipped'] ?? 0 );
          $fetch_skipped_reason = trim( (string) ( $sync['fetch_skipped_reason'] ?? '' ) );
          if ( $fetch_skipped_reason !== '' )
          {
            $fetch_skipped_reasons[ $fetch_skipped_reason ] = true;
          }
          if ( !empty( $sync['errors'] ) )
          {
            $errors = array_merge( $errors, (array) $sync['errors'] );
            $error_msg = implode( '; ', (array) $sync['errors'] );
          }
        }
        else if ( $source_phase === 'fetch' )
        {
          $history_30_products_total += (int) self::aggregate_products_history_30_for_client( $active_client_id, $active_date );
        }

        self::mark_sync_phase( 'products', $active_date, $active_client_id, $next_phase, $error_msg );
        $dates_processed_in_call[] = $active_date;
      }
    }

    $done_count = (int) $mdb -> query(
      "SELECT COUNT(*) FROM cron_sync_status cs
       INNER JOIN clients c ON cs.client_id = c.id AND c.deleted = 0
       WHERE cs.pipeline = 'products' AND cs.client_id = :client_id AND cs.phase = 'done'
       AND cs.sync_date >= DATE_SUB(CURDATE(), INTERVAL 90 DAY)",
      [ ':client_id' => $active_client_id ]
    ) -> fetchColumn();
    $total_count = (int) $mdb -> query(
      "SELECT COUNT(*) FROM cron_sync_status cs
       INNER JOIN clients c ON cs.client_id = c.id AND c.deleted = 0
       WHERE cs.pipeline = 'products' AND cs.client_id = :client_id
       AND cs.sync_date >= DATE_SUB(CURDATE(), INTERVAL 90 DAY)",
      [ ':client_id' => $active_client_id ]
    ) -> fetchColumn();

    $remaining_dates = max( 0, $total_count - $done_count );
    $estimated_calls_remaining = (int) ceil( $remaining_dates / max( 1, $dates_per_run ) );

    $phase_labels = [
      'pending' => 'fetch',
      'fetch' => 'aggregate_30',
      'aggregate_30' => 'aggregate_temp'
    ];
    $display_phase = $phase_labels[ $source_phase ] ?? $source_phase;

    $result_text = 'Brak dat do przetworzenia w tej fazie.';
    if ( $source_phase === 'pending' )
    {
      $result_text = empty( $errors ) ? 'Pobieranie produktow zakonczone.' : 'Pobieranie produktow zakonczone z bledami.';
    }
    else if ( $source_phase === 'fetch' )
    {
      $result_text = 'Pierwsza agregacja (history_30) zakonczona.';
    }
    else if ( $source_phase === 'aggregate_30' )
    {
      $result_text = 'Druga agregacja (products_temp) zakonczona.';
    }

    echo json_encode( [
      'result' => $result_text,
      'date' => $date,
      'active_client_id' => $active_client_id,
      'conversion_window_days' => $conversion_window_days,
      'dates_synced' => $import_dates,
      'phase' => $display_phase,
      'dates_per_run' => $dates_per_run,
      'dates_processed_in_call' => count( $dates_processed_in_call ),
      'processed_dates' => $dates_processed_in_call,
      'remaining_dates' => $remaining_dates,
      'estimated_calls_remaining' => $estimated_calls_remaining,
      'total_clients' => count( $client_ids ),
      'processed_products' => $processed_products_total,
      'skipped' => $skipped_total,
      'fetch_skipped_reasons' => array_keys( $fetch_skipped_reasons ),
      'history_30_products' => $history_30_products_total,
      'products_temp_rows' => $products_temp_rows_total,
      'errors' => $errors
    ] );
    exit;
  }

  static public function cron_products_urls()
  {
    global $mdb, $settings;
    self::touch_cron_invocation( __FUNCTION__ );

    $api = new \services\GoogleAdsApi();
    if ( !$api -> is_merchant_configured() )
    {
      echo json_encode( [
        'result' => 'Merchant API nie jest skonfigurowane. Uzupelnij OAuth2 Client ID/Secret oraz Merchant Refresh Token w Ustawieniach.'
      ] );
      exit;
    }

    $client_id = (int) \S::get( 'client_id' );
    $batch_limit = (int) \S::get( 'limit' );
    $debug_mode = (int) \S::get( 'debug' ) === 1;
    if ( $batch_limit <= 0 )
    {
      $batch_limit = (int) ( $settings['cron_products_urls_limit_per_client'] ?? 100 );
    }
    if ( $batch_limit <= 0 )
    {
      $batch_limit = 100;
    }
    $batch_limit = min( 1000, $batch_limit );

    $clients_per_run_default = (int) ( $settings['cron_products_urls_clients_per_run'] ?? ( $settings['cron_products_clients_per_run'] ?? 1 ) );
    if ( $clients_per_run_default <= 0 )
    {
      $clients_per_run_default = 1;
    }

    $clients_per_run = (int) \S::get( 'clients_per_run' );
    if ( $clients_per_run <= 0 )
    {
      $clients_per_run = (int) self::get_setting_value( 'cron_products_urls_clients_per_run', $clients_per_run_default );
    }
    if ( $clients_per_run <= 0 )
    {
      $clients_per_run = $clients_per_run_default;
    }
    $clients_per_run = min( 20, $clients_per_run );

    $where = "deleted = 0 AND google_merchant_account_id IS NOT NULL AND google_merchant_account_id <> ''";
    if ( $client_id > 0 )
    {
      $where .= ' AND id = ' . $client_id;
    }

    $clients = $mdb -> query( 'SELECT id, name, google_merchant_account_id FROM clients WHERE ' . $where . ' ORDER BY id ASC' ) -> fetchAll( \PDO::FETCH_ASSOC );

    if ( !is_array( $clients ) || empty( $clients ) )
    {
      echo json_encode( [
        'result' => 'Brak klientow z ustawionym Merchant Account ID.',
        'processed_clients' => 0,
        'checked_products' => 0,
        'updated_urls' => 0,
        'errors' => []
      ] );
      exit;
    }

    $total_clients_available = count( $clients );
    if ( $client_id <= 0 )
    {
      $last_client_cursor = (int) self::get_setting_value( 'cron_products_urls_last_client_id', 0 );
      $clients = self::pick_clients_batch_by_cursor( $clients, $clients_per_run, $last_client_cursor );
    }
    else
    {
      $clients_per_run = 1;
    }

    $checked_products = 0;
    $updated_urls = 0;
    $unresolved_products = 0;
    $processed_clients = 0;
    $errors = [];
    $details = [];

    foreach ( $clients as $client )
    {
      $processed_clients++;
      $selected_products = self::get_products_missing_url_for_client( (int) $client['id'], $batch_limit );
      $product_count = count( $selected_products );
      $diag = $debug_mode ? self::get_products_url_sync_diagnostics_for_client( (int) $client['id'] ) : null;

      if ( $product_count === 0 )
      {
        $detail_row = [
          'client_id' => (int) $client['id'],
          'client_name' => (string) $client['name'],
          'merchant_account_id' => (string) $client['google_merchant_account_id'],
          'selected_products' => 0,
          'updated_urls' => 0,
          'unresolved_products' => 0
        ];

        if ( $debug_mode )
        {
          $detail_row['diag'] = $diag;
        }

        $details[] = $detail_row;
        continue;
      }
      $checked_products += $product_count;

      $offer_ids = [];
      foreach ( $selected_products as $row )
      {
        $offer_ids[] = (string) $row['offer_id'];
      }

      $links_map = $api -> get_merchant_product_links_for_offer_ids( (string) $client['google_merchant_account_id'], $offer_ids );
      if ( $links_map === false )
      {
        $last_err = (string) \services\GoogleAdsApi::get_setting( 'google_merchant_last_error' );
        $errors[] = 'Blad Merchant API dla klienta ' . $client['name'] . ' (ID: ' . $client['id'] . '): ' . $last_err;
        $unresolved_products += $product_count;

        $detail_row = [
          'client_id' => (int) $client['id'],
          'client_name' => (string) $client['name'],
          'merchant_account_id' => (string) $client['google_merchant_account_id'],
          'selected_products' => $product_count,
          'updated_urls' => 0,
          'unresolved_products' => $product_count
        ];

        if ( $debug_mode )
        {
          $detail_row['diag'] = $diag;
        }

        $details[] = $detail_row;
        continue;
      }

      $client_updated = 0;
      foreach ( $selected_products as $row )
      {
        $offer_id = (string) $row['offer_id'];
        if ( !isset( $links_map[ $offer_id ] ) )
        {
          continue;
        }

        \factory\Products::set_product_data( (int) $row['product_id'], 'product_url', (string) $links_map[ $offer_id ] );
        $client_updated++;
      }

      $updated_urls += $client_updated;
      $client_unresolved = max( 0, $product_count - $client_updated );
      $unresolved_products += $client_unresolved;

      $detail_row = [
        'client_id' => (int) $client['id'],
        'client_name' => (string) $client['name'],
        'merchant_account_id' => (string) $client['google_merchant_account_id'],
        'selected_products' => $product_count,
        'updated_urls' => $client_updated,
        'unresolved_products' => $client_unresolved
      ];

      if ( $debug_mode )
      {
        $detail_row['diag'] = $diag;
      }

      $details[] = $detail_row;
    }

    if ( $client_id <= 0 && !empty( $clients ) )
    {
      $last_client = end( $clients );
      $last_client_id = (int) ( $last_client['id'] ?? 0 );
      if ( $last_client_id > 0 )
      {
        self::set_setting_value( 'cron_products_urls_last_client_id', (string) $last_client_id );
      }
    }

    echo json_encode( [
      'result' => empty( $errors ) ? 'Synchronizacja URL produktow zakonczona.' : 'Synchronizacja URL produktow zakonczona z bledami.',
      'total_clients_available' => $total_clients_available,
      'processed_clients' => $processed_clients,
      'clients_per_run' => $clients_per_run,
      'checked_products' => $checked_products,
      'updated_urls' => $updated_urls,
      'unresolved_products' => $unresolved_products,
      'errors' => $errors,
      'details' => $details
    ] );
    exit;
  }

  static private function get_products_url_sync_diagnostics_for_client( $client_id )
  {
    global $mdb;

    $client_id = (int) $client_id;
    if ( $client_id <= 0 )
    {
      return [];
    }

    $diag = [];

    $diag['products_total'] = (int) $mdb -> query( 'SELECT COUNT(*) FROM products WHERE client_id = ' . $client_id ) -> fetchColumn();
    $diag['products_not_deleted'] = (int) $mdb -> query( 'SELECT COUNT(*) FROM products WHERE client_id = ' . $client_id ) -> fetchColumn();
    $diag['products_with_offer_id'] = (int) $mdb -> query( 'SELECT COUNT(*) FROM products WHERE client_id = ' . $client_id . ' AND TRIM( COALESCE( offer_id, "" ) ) <> ""' ) -> fetchColumn();
    $diag['products_with_pd_rows'] = (int) $mdb -> query( 'SELECT COUNT( DISTINCT pd.product_id ) FROM products_data pd INNER JOIN products p ON p.id = pd.product_id WHERE p.client_id = ' . $client_id ) -> fetchColumn();
    $diag['products_with_real_url'] = (int) $mdb -> query( 'SELECT COUNT(*) FROM products p LEFT JOIN ( SELECT product_id, MAX( CASE WHEN TRIM( COALESCE( product_url, \"\" ) ) = \"\" THEN 0 WHEN LOWER( TRIM( product_url ) ) IN ( \"0\", \"-\", \"null\" ) THEN 0 ELSE 1 END ) AS has_real_url FROM products_data GROUP BY product_id ) pd ON pd.product_id = p.id WHERE p.client_id = ' . $client_id . ' AND TRIM( COALESCE( p.offer_id, \"\" ) ) <> \"\" AND COALESCE( pd.has_real_url, 0 ) = 1' ) -> fetchColumn();
    $diag['products_missing_url'] = (int) $mdb -> query( 'SELECT COUNT(*) FROM products p LEFT JOIN ( SELECT product_id, MAX( CASE WHEN TRIM( COALESCE( product_url, \"\" ) ) = \"\" THEN 0 WHEN LOWER( TRIM( product_url ) ) IN ( \"0\", \"-\", \"null\" ) THEN 0 ELSE 1 END ) AS has_real_url FROM products_data GROUP BY product_id ) pd ON pd.product_id = p.id WHERE p.client_id = ' . $client_id . ' AND TRIM( COALESCE( p.offer_id, \"\" ) ) <> \"\" AND COALESCE( pd.has_real_url, 0 ) = 0' ) -> fetchColumn();

    return $diag;
  }

  static private function get_products_missing_url_for_client( $client_id, $limit )
  {
    global $mdb;

    $client_id = (int) $client_id;
    $limit = max( 1, min( 1000, (int) $limit ) );

    if ( $client_id <= 0 )
    {
      return [];
    }

    $sql = 'SELECT p.id AS product_id, p.offer_id '
         . 'FROM products p '
         . 'LEFT JOIN ( '
         . '  SELECT product_id, '
         . '         MAX( CASE '
         . '                WHEN TRIM( COALESCE( product_url, \'\' ) ) = \'\' THEN 0 '
         . '                WHEN LOWER( TRIM( product_url ) ) IN ( \'0\', \'-\', \'null\' ) THEN 0 '
         . '                ELSE 1 '
         . '              END ) AS has_real_url '
         . '  FROM products_data '
         . '  GROUP BY product_id '
         . ') pd ON pd.product_id = p.id '
         . 'WHERE p.client_id = ' . $client_id . ' '
         . 'AND TRIM( COALESCE( p.offer_id, \'\' ) ) <> \'\' '
         . 'AND COALESCE( pd.has_real_url, 0 ) = 0 '
         . 'ORDER BY p.id ASC '
         . 'LIMIT ' . $limit;

    $rows = $mdb -> query( $sql ) -> fetchAll( \PDO::FETCH_ASSOC );
        return is_array( $rows ) ? $rows : [];
  }

  static private function sync_products_fetch_for_client( $client, $api, $date )
  {
    global $mdb;

    $client_id = (int) $client['id'];
    $customer_id = trim( (string) ( $client['google_ads_customer_id'] ?? '' ) );
    $date = date( 'Y-m-d', strtotime( $date ) );

    $known_campaign_types = $mdb -> query(
      'SELECT DISTINCT UPPER( TRIM( advertising_channel_type ) ) AS channel_type
       FROM campaigns
       WHERE client_id = :client_id
         AND campaign_id > 0
         AND advertising_channel_type IS NOT NULL
         AND TRIM( advertising_channel_type ) <> ""',
      [ ':client_id' => $client_id ]
    ) -> fetchAll( \PDO::FETCH_COLUMN );

    $known_campaign_types = array_values( array_unique( array_filter( array_map( function( $item )
    {
      return strtoupper( trim( (string) $item ) );
    }, (array) $known_campaign_types ) ) ) );

    $product_campaign_types = [ 'SHOPPING', 'PERFORMANCE_MAX' ];
    $has_product_campaign_type = count( array_intersect( $known_campaign_types, $product_campaign_types ) ) > 0;

    if ( !empty( $known_campaign_types ) && !$has_product_campaign_type )
    {
      return [
        'date' => $date,
        'processed_products' => 0,
        'skipped' => 0,
        'history_30_products' => 0,
        'products_temp_rows' => 0,
        'touched_products' => 0,
        'fetch_skipped_reason' => 'non_product_campaign_types',
        'errors' => []
      ];
    }

    $products = $api -> get_products_for_date( $customer_id, $date );
    if ( $products === false )
    {
      $last_err = \services\GoogleAdsApi::get_setting( 'google_ads_last_error' );
      return [
        'date' => $date,
        'processed_products' => 0,
        'skipped' => 0,
        'history_30_products' => 0,
        'products_temp_rows' => 0,
        'errors' => [ 'Blad API dla klienta ' . $client['name'] . ' (ID: ' . $customer_id . '): ' . $last_err ]
      ];
    }

    if ( !is_array( $products ) )
    {
      $products = [];
    }

    $existing_products_rows = $mdb -> query(
      'SELECT id, offer_id, name
       FROM products
       WHERE client_id = :client_id
       ORDER BY id ASC',
      [ ':client_id' => $client_id ]
    ) -> fetchAll( \PDO::FETCH_ASSOC );

    $products_by_offer_id = [];
    foreach ( $existing_products_rows as $row )
    {
      $offer_id = trim( (string) ( $row['offer_id'] ?? '' ) );
      if ( $offer_id === '' || isset( $products_by_offer_id[ $offer_id ] ) )
      {
        continue;
      }

      $products_by_offer_id[ $offer_id ] = [
        'id' => (int) ( $row['id'] ?? 0 ),
        'name' => (string) ( $row['name'] ?? '' )
      ];
    }

    $products_data_rows = $mdb -> query(
      'SELECT pd.id, pd.product_id, pd.product_url
       FROM products_data AS pd
       INNER JOIN products AS p ON p.id = pd.product_id
       WHERE p.client_id = :client_id',
      [ ':client_id' => $client_id ]
    ) -> fetchAll( \PDO::FETCH_ASSOC );

    $products_data_map = [];
    foreach ( $products_data_rows as $row )
    {
      $product_id = (int) ( $row['product_id'] ?? 0 );
      if ( $product_id <= 0 || isset( $products_data_map[ $product_id ] ) )
      {
        continue;
      }

      $products_data_map[ $product_id ] = [
        'exists' => true,
        'product_url' => trim( (string) ( $row['product_url'] ?? '' ) )
      ];
    }

    $existing_campaigns_rows = $mdb -> query(
      'SELECT id, campaign_id, campaign_name
       FROM campaigns
       WHERE client_id = :client_id
         AND campaign_id > 0',
      [ ':client_id' => $client_id ]
    ) -> fetchAll( \PDO::FETCH_ASSOC );

    $campaigns_by_external_id = [];
    $campaigns_by_db_id = [];
    foreach ( $existing_campaigns_rows as $row )
    {
      $db_campaign_id = (int) ( $row['id'] ?? 0 );
      $external_campaign_id = (int) ( $row['campaign_id'] ?? 0 );

      if ( $db_campaign_id <= 0 )
      {
        continue;
      }

      $campaign_data = [
        'id' => $db_campaign_id,
        'campaign_name' => (string) ( $row['campaign_name'] ?? '' )
      ];

      if ( !isset( $campaigns_by_external_id[ $external_campaign_id ] ) )
      {
        $campaigns_by_external_id[ $external_campaign_id ] = $campaign_data;
      }

      $campaigns_by_db_id[ $db_campaign_id ] = $campaign_data;
    }

    $existing_campaign_histories = $mdb -> query(
      'SELECT ch.campaign_id
       FROM campaigns_history AS ch
       INNER JOIN campaigns AS c ON c.id = ch.campaign_id
       WHERE c.client_id = :client_id
         AND ch.date_add = :date_add',
      [
        ':client_id' => $client_id,
        ':date_add' => $date
      ]
    ) -> fetchAll( \PDO::FETCH_COLUMN );

    $campaign_history_exists = [];
    foreach ( (array) $existing_campaign_histories as $history_campaign_id )
    {
      $campaign_history_exists[ (int) $history_campaign_id ] = true;
    }

    $existing_ad_groups_rows = $mdb -> query(
      'SELECT ag.id, ag.campaign_id, ag.ad_group_id, ag.ad_group_name
       FROM campaign_ad_groups AS ag
       INNER JOIN campaigns AS c ON c.id = ag.campaign_id
       WHERE c.client_id = :client_id',
      [ ':client_id' => $client_id ]
    ) -> fetchAll( \PDO::FETCH_ASSOC );

    $ad_groups_by_scope = [];
    foreach ( $existing_ad_groups_rows as $row )
    {
      $db_campaign_id = (int) ( $row['campaign_id'] ?? 0 );
      $external_ad_group_id = (int) ( $row['ad_group_id'] ?? 0 );
      $db_ad_group_id = (int) ( $row['id'] ?? 0 );

      if ( $db_campaign_id <= 0 || $db_ad_group_id <= 0 )
      {
        continue;
      }

      $scope_key = $db_campaign_id . '|' . $external_ad_group_id;
      if ( isset( $ad_groups_by_scope[ $scope_key ] ) )
      {
        continue;
      }

      $ad_groups_by_scope[ $scope_key ] = [
        'id' => $db_ad_group_id,
        'ad_group_name' => (string) ( $row['ad_group_name'] ?? '' )
      ];
    }

    $existing_history_rows = $mdb -> query(
      'SELECT ph.product_id, ph.campaign_id, ph.ad_group_id, ph.impressions, ph.clicks, ph.cost, ph.conversions, ph.conversions_value
       FROM products_history AS ph
       INNER JOIN products AS p ON p.id = ph.product_id
       WHERE p.client_id = :client_id
         AND ph.date_add = :date_add',
      [
        ':client_id' => $client_id,
        ':date_add' => $date
      ]
    ) -> fetchAll( \PDO::FETCH_ASSOC );

    $history_by_scope = [];
    foreach ( $existing_history_rows as $row )
    {
      $history_key = (int) ( $row['product_id'] ?? 0 ) . '|' . (int) ( $row['campaign_id'] ?? 0 ) . '|' . (int) ( $row['ad_group_id'] ?? 0 );
      $history_by_scope[ $history_key ] = [
        'impressions' => (int) ( $row['impressions'] ?? 0 ),
        'clicks' => (int) ( $row['clicks'] ?? 0 ),
        'cost' => (float) ( $row['cost'] ?? 0 ),
        'conversions' => (float) ( $row['conversions'] ?? 0 ),
        'conversions_value' => (float) ( $row['conversions_value'] ?? 0 )
      ];
    }

    $resolve_scope_ids = function( $campaign_external_id, $campaign_name, $ad_group_external_id, $ad_group_name ) use ( &$campaigns_by_external_id, &$campaigns_by_db_id, &$campaign_history_exists, &$ad_groups_by_scope, $client_id, $date, $mdb )
    {
      $campaign_external_id = (int) $campaign_external_id;
      $campaign_name = trim( (string) $campaign_name );
      $ad_group_external_id = (int) $ad_group_external_id;
      $ad_group_name = trim( (string) $ad_group_name );

      if ( $campaign_external_id <= 0 )
      {
        return [ 'campaign_id' => 0, 'ad_group_id' => 0 ];
      }

      $campaign_data = $campaigns_by_external_id[ $campaign_external_id ] ?? null;
      if ( !$campaign_data )
      {
        $campaign_name_to_save = $campaign_name;
        if ( $campaign_name_to_save === '' )
        {
          $campaign_name_to_save = $campaign_external_id > 0 ? 'Kampania #' . $campaign_external_id : '--- konto ---';
        }

        $mdb -> insert( 'campaigns', [
          'client_id' => $client_id,
          'campaign_id' => $campaign_external_id,
          'campaign_name' => $campaign_name_to_save
        ] );

        $db_campaign_id = (int) $mdb -> id();

        $campaign_data = [
          'id' => $db_campaign_id,
          'campaign_name' => $campaign_name_to_save
        ];

        $campaigns_by_external_id[ $campaign_external_id ] = $campaign_data;
        $campaigns_by_db_id[ $db_campaign_id ] = $campaign_data;
      }
      else if ( $campaign_name !== '' && $campaign_name !== (string) ( $campaign_data['campaign_name'] ?? '' ) )
      {
        $mdb -> update( 'campaigns', [ 'campaign_name' => $campaign_name ], [ 'id' => (int) $campaign_data['id'] ] );
        $campaign_data['campaign_name'] = $campaign_name;
        $campaigns_by_external_id[ $campaign_external_id ] = $campaign_data;
        $campaigns_by_db_id[ (int) $campaign_data['id'] ] = $campaign_data;
      }

      $db_campaign_id = (int) ( $campaign_data['id'] ?? 0 );

      if ( $db_campaign_id > 0 && !isset( $campaign_history_exists[ $db_campaign_id ] ) )
      {
        $mdb -> insert( 'campaigns_history', [
          'campaign_id' => $db_campaign_id,
          'roas_30_days' => 0,
          'roas_all_time' => 0,
          'budget' => 0,
          'money_spent' => 0,
          'conversion_value' => 0,
          'bidding_strategy' => '',
          'date_add' => $date
        ] );

        $campaign_history_exists[ $db_campaign_id ] = true;
      }

      if ( $db_campaign_id <= 0 )
      {
        return [ 'campaign_id' => 0, 'ad_group_id' => 0 ];
      }

      if ( $ad_group_external_id <= 0 )
      {
        $scope_key = $db_campaign_id . '|0';
        if ( !isset( $ad_groups_by_scope[ $scope_key ] ) )
        {
          $db_ad_group_id = (int) self::ensure_campaign_level_ad_group( $db_campaign_id, $date );
          $ad_groups_by_scope[ $scope_key ] = [
            'id' => $db_ad_group_id,
            'ad_group_name' => '--- kampania (brak grupy reklam) ---'
          ];
        }

        return [
          'campaign_id' => $db_campaign_id,
          'ad_group_id' => (int) ( $ad_groups_by_scope[ $scope_key ]['id'] ?? 0 )
        ];
      }

      $scope_key = $db_campaign_id . '|' . $ad_group_external_id;
      $ad_group_data = $ad_groups_by_scope[ $scope_key ] ?? null;

      if ( !$ad_group_data )
      {
        $ad_group_name_to_save = $ad_group_name !== '' ? $ad_group_name : 'Ad group #' . $ad_group_external_id;

        $mdb -> insert( 'campaign_ad_groups', [
          'campaign_id' => $db_campaign_id,
          'ad_group_id' => $ad_group_external_id,
          'ad_group_name' => $ad_group_name_to_save,
          'impressions_30' => 0,
          'clicks_30' => 0,
          'cost_30' => 0,
          'conversions_30' => 0,
          'conversion_value_30' => 0,
          'roas_30' => 0,
          'impressions_all_time' => 0,
          'clicks_all_time' => 0,
          'cost_all_time' => 0,
          'conversions_all_time' => 0,
          'conversion_value_all_time' => 0,
          'roas_all_time' => 0,
          'date_sync' => $date
        ] );

        $ad_group_data = [
          'id' => (int) $mdb -> id(),
          'ad_group_name' => $ad_group_name_to_save
        ];

        $ad_groups_by_scope[ $scope_key ] = $ad_group_data;
      }
      else if ( $ad_group_name !== '' && $ad_group_name !== (string) ( $ad_group_data['ad_group_name'] ?? '' ) )
      {
        $mdb -> update( 'campaign_ad_groups', [ 'ad_group_name' => $ad_group_name ], [ 'id' => (int) $ad_group_data['id'] ] );
        $ad_group_data['ad_group_name'] = $ad_group_name;
        $ad_groups_by_scope[ $scope_key ] = $ad_group_data;
      }

      return [
        'campaign_id' => $db_campaign_id,
        'ad_group_id' => (int) ( $ad_group_data['id'] ?? 0 )
      ];
    };

    $processed = 0;
    $skipped = 0;
    $touched_product_ids = [];

    foreach ( $products as $offer )
    {
      $offer_external_id = trim( (string) ( $offer['OfferId'] ?? '' ) );
      if ( $offer_external_id === '' )
      {
        $skipped++;
        continue;
      }

      $product_title = trim( (string) ( $offer['ProductTitle'] ?? '' ) );
      if ( $product_title === '' )
      {
        $product_title = $offer_external_id;
      }

      $existing_product = $products_by_offer_id[ $offer_external_id ] ?? null;

      if ( !$existing_product )
      {
        $mdb -> insert( 'products', [
          'client_id' => $client_id,
          'offer_id' => $offer_external_id,
          'name' => $product_title
        ] );

        $product_id = $mdb -> id();

        $products_by_offer_id[ $offer_external_id ] = [
          'id' => (int) $product_id,
          'name' => $product_title
        ];
      }
      else
      {
        $product_id = (int) ( $existing_product['id'] ?? 0 );
        $offer_current_name = (string) ( $existing_product['name'] ?? '' );

        if ( $offer_current_name != $product_title and $date == date( 'Y-m-d', strtotime( '-1 days' ) ) )
        {
          $mdb -> update( 'products', [ 'name' => $product_title ], [ 'AND' => [ 'client_id' => $client_id, 'offer_id' => $offer_external_id ] ] );
          $products_by_offer_id[ $offer_external_id ]['name'] = $product_title;
        }
      }

      if ( !$product_id )
      {
        $skipped++;
        continue;
      }

      $product_url = trim( (string) ( $offer['ProductUrl'] ?? '' ) );
      $product_url_path = strtolower( (string) parse_url( $product_url, PHP_URL_PATH ) );
      $is_image_url = (bool) preg_match( '/\.(jpg|jpeg|png|gif|webp|bmp|svg|avif)$/i', $product_url_path );

      if ( $product_url !== '' && filter_var( $product_url, FILTER_VALIDATE_URL ) && !$is_image_url )
      {
        $product_data_row = $products_data_map[ $product_id ] ?? [ 'exists' => false, 'product_url' => '' ];
        $existing_product_url = trim( (string) ( $product_data_row['product_url'] ?? '' ) );

        if ( $existing_product_url !== $product_url )
        {
          if ( !empty( $product_data_row['exists'] ) )
          {
            $mdb -> update( 'products_data', [ 'product_url' => $product_url ], [ 'product_id' => $product_id ] );
          }
          else
          {
            $mdb -> insert( 'products_data', [
              'product_id' => $product_id,
              'product_url' => $product_url
            ] );
            $product_data_row['exists'] = true;
          }

          $product_data_row['product_url'] = $product_url;
          $products_data_map[ $product_id ] = $product_data_row;
        }
      }

      $campaign_external_id = (int) ( $offer['CampaignId'] ?? 0 );
      if ( $campaign_external_id <= 0 )
      {
        $skipped++;
        continue;
      }

      $campaign_name = trim( (string) ( $offer['CampaignName'] ?? '' ) );
      $ad_group_external_id = (int) ( $offer['AdGroupId'] ?? 0 );
      $ad_group_name = trim( (string) ( $offer['AdGroupName'] ?? '' ) );

      $scope = $resolve_scope_ids( $campaign_external_id, $campaign_name, $ad_group_external_id, $ad_group_name );

      $db_campaign_id = (int) ( $scope['campaign_id'] ?? 0 );
      $db_ad_group_id = (int) ( $scope['ad_group_id'] ?? 0 );

      $impressions = (int) round( (float) ( $offer['Impressions'] ?? 0 ) );
      $clicks = (int) round( (float) ( $offer['Clicks'] ?? 0 ) );
      $cost = (float) ( $offer['Cost'] ?? 0 );
      $conversions = (float) ( $offer['Conversions'] ?? 0 );
      $conversion_value = (float) ( $offer['ConversionValue'] ?? 0 );
      $ctr = ( $impressions > 0 ) ? round( $clicks / $impressions, 4 ) * 100 : 0;

      $offer_data = [
        'impressions' => $impressions,
        'clicks' => $clicks,
        'ctr' => $ctr,
        'cost' => $cost,
        'conversions' => $conversions,
        'conversions_value' => $conversion_value,
        'updated' => 1,
        'campaign_id' => $db_campaign_id,
        'ad_group_id' => $db_ad_group_id
      ];

      $history_scope_key = (int) $product_id . '|' . (int) $db_campaign_id . '|' . (int) $db_ad_group_id;
      $offer_data_old = $history_by_scope[ $history_scope_key ] ?? null;

      if ( $offer_data_old )
      {
        if (
          $offer_data_old['impressions'] == $offer_data['impressions']
          and $offer_data_old['clicks'] == $offer_data['clicks']
          and number_format( (float) str_replace( ',', '.', $offer_data_old['cost'] ), 5 ) == number_format( (float) $offer_data['cost'], 5 )
          and (float) $offer_data_old['conversions'] == (float) $offer_data['conversions']
          and number_format( (float) str_replace( ',', '.', $offer_data_old['conversions_value'] ), 5 ) == number_format( (float) $offer_data['conversions_value'], 5 )
        )
        {
          $touched_product_ids[ $product_id ] = true;
          $processed++;
          continue;
        }

        $mdb -> update( 'products_history', $offer_data, [
          'AND' => [
            'product_id' => $product_id,
            'campaign_id' => $db_campaign_id,
            'ad_group_id' => $db_ad_group_id,
            'date_add' => $date
          ]
        ] );

        $history_by_scope[ $history_scope_key ] = [
          'impressions' => $offer_data['impressions'],
          'clicks' => $offer_data['clicks'],
          'cost' => $offer_data['cost'],
          'conversions' => $offer_data['conversions'],
          'conversions_value' => $offer_data['conversions_value']
        ];
      }
      else
      {
        $offer_data['product_id'] = $product_id;
        $offer_data['date_add'] = $date;
        $mdb -> insert( 'products_history', $offer_data );

        $history_by_scope[ $history_scope_key ] = [
          'impressions' => $offer_data['impressions'],
          'clicks' => $offer_data['clicks'],
          'cost' => $offer_data['cost'],
          'conversions' => $offer_data['conversions'],
          'conversions_value' => $offer_data['conversions_value']
        ];
      }

      $touched_product_ids[ $product_id ] = true;
      $processed++;
    }

    return [
      'date' => $date,
      'processed_products' => $processed,
      'skipped' => $skipped,
      'touched_products' => count( $touched_product_ids ),
      'errors' => []
    ];
  }

  static public function resolve_products_scope_ids( $client_id, $campaign_external_id, $campaign_name, $ad_group_external_id, $ad_group_name, $date_sync )
  {
    $client_id = (int) $client_id;
    $campaign_external_id = (int) $campaign_external_id;
    $ad_group_external_id = (int) $ad_group_external_id;

    $db_campaign_id = self::ensure_products_campaign(
      $client_id,
      $campaign_external_id,
      $campaign_name,
      $date_sync
    );

    if ( $db_campaign_id <= 0 )
    {
      $db_campaign_id = self::ensure_products_campaign(
        $client_id,
        0,
        '--- konto ---',
        $date_sync
      );
    }

    $db_ad_group_id = self::ensure_products_ad_group(
      $db_campaign_id,
      $ad_group_external_id,
      $ad_group_name,
      $date_sync
    );

    return [
      'campaign_id' => (int) $db_campaign_id,
      'ad_group_id' => (int) $db_ad_group_id
    ];
  }

  static private function ensure_products_campaign( $client_id, $campaign_external_id, $campaign_name, $date_sync )
  {
    global $mdb;

    $client_id = (int) $client_id;
    $campaign_external_id = (int) $campaign_external_id;
    $campaign_name = trim( (string) $campaign_name );

    if ( $client_id <= 0 )
    {
      return 0;
    }

    $db_campaign_id = (int) $mdb -> get( 'campaigns', 'id', [ 'AND' => [
      'client_id' => $client_id,
      'campaign_id' => $campaign_external_id
    ] ] );

    if ( $db_campaign_id > 0 )
    {
      if ( $campaign_name !== '' )
      {
        $mdb -> update( 'campaigns', [ 'campaign_name' => $campaign_name ], [ 'id' => $db_campaign_id ] );
      }

      return $db_campaign_id;
    }

    if ( $campaign_name === '' )
    {
      $campaign_name = $campaign_external_id > 0 ? 'Kampania #' . $campaign_external_id : '--- konto ---';
    }

    $mdb -> insert( 'campaigns', [
      'client_id' => $client_id,
      'campaign_id' => $campaign_external_id,
      'campaign_name' => $campaign_name
    ] );

    $db_campaign_id = (int) $mdb -> id();

    if ( $db_campaign_id > 0 && $date_sync )
    {
      if ( !$mdb -> count( 'campaigns_history', [ 'AND' => [ 'campaign_id' => $db_campaign_id, 'date_add' => $date_sync ] ] ) )
      {
        $mdb -> insert( 'campaigns_history', [
          'campaign_id' => $db_campaign_id,
          'roas_30_days' => 0,
          'roas_all_time' => 0,
          'budget' => 0,
          'money_spent' => 0,
          'conversion_value' => 0,
          'bidding_strategy' => '',
          'date_add' => $date_sync
        ] );
      }
    }

    return $db_campaign_id;
  }

  static private function ensure_products_ad_group( $db_campaign_id, $ad_group_external_id, $ad_group_name, $date_sync )
  {
    global $mdb;

    $db_campaign_id = (int) $db_campaign_id;
    $ad_group_external_id = (int) $ad_group_external_id;
    $ad_group_name = trim( (string) $ad_group_name );

    if ( $db_campaign_id <= 0 )
    {
      return 0;
    }

    if ( $ad_group_external_id <= 0 )
    {
      return (int) self::ensure_campaign_level_ad_group( $db_campaign_id, $date_sync );
    }

    $db_ad_group_id = (int) $mdb -> get( 'campaign_ad_groups', 'id', [ 'AND' => [
      'campaign_id' => $db_campaign_id,
      'ad_group_id' => $ad_group_external_id
    ] ] );

    if ( $db_ad_group_id > 0 )
    {
      if ( $ad_group_name !== '' )
      {
        $mdb -> update( 'campaign_ad_groups', [ 'ad_group_name' => $ad_group_name ], [ 'id' => $db_ad_group_id ] );
      }

      return $db_ad_group_id;
    }

    if ( $ad_group_name === '' )
    {
      $ad_group_name = 'Ad group #' . $ad_group_external_id;
    }

    $mdb -> insert( 'campaign_ad_groups', [
      'campaign_id' => $db_campaign_id,
      'ad_group_id' => $ad_group_external_id,
      'ad_group_name' => $ad_group_name,
      'impressions_30' => 0,
      'clicks_30' => 0,
      'cost_30' => 0,
      'conversions_30' => 0,
      'conversion_value_30' => 0,
      'roas_30' => 0,
      'impressions_all_time' => 0,
      'clicks_all_time' => 0,
      'cost_all_time' => 0,
      'conversions_all_time' => 0,
      'conversion_value_all_time' => 0,
      'roas_all_time' => 0,
      'date_sync' => $date_sync
    ] );

    return (int) $mdb -> id();
  }

  static private function aggregate_products_history_30_for_client( $client_id, $date = null )
  {
    global $mdb;

    $client_id = (int) $client_id;
    $params = [ ':client_id' => $client_id ];
    $sql = 'SELECT DISTINCT ph.product_id, ph.campaign_id, ph.ad_group_id, ph.date_add
            FROM products_history AS ph
            INNER JOIN products AS p ON p.id = ph.product_id
            WHERE p.client_id = :client_id
              AND ph.campaign_id > 0
              AND ph.updated = 1';

    if ( $date )
    {
      $params[':date_add'] = date( 'Y-m-d', strtotime( $date ) );
      $sql .= ' AND ph.date_add = :date_add';
    }

    $sql .= ' ORDER BY ph.date_add ASC, ph.product_id ASC, ph.campaign_id ASC, ph.ad_group_id ASC';

    $rows = $mdb -> query( $sql, $params ) -> fetchAll( \PDO::FETCH_ASSOC );

    $processed = 0;
    foreach ( $rows as $row )
    {
      $product_id = (int) $row['product_id'];
      $campaign_id = (int) ( $row['campaign_id'] ?? 0 );
      $ad_group_id = (int) ( $row['ad_group_id'] ?? 0 );

      self::cron_product_history_30_save( $product_id, $row['date_add'], $campaign_id, $ad_group_id );
      $mdb -> query(
        'UPDATE products_history AS ph
         INNER JOIN products AS p ON p.id = ph.product_id
         SET ph.updated = 0
         WHERE ph.product_id = :product_id
           AND ph.campaign_id = :campaign_id
           AND ph.ad_group_id = :ad_group_id
           AND ph.date_add = :date_add
           AND p.client_id = :client_id',
        [
          ':product_id' => $product_id,
          ':campaign_id' => $campaign_id,
          ':ad_group_id' => $ad_group_id,
          ':date_add' => $row['date_add'],
          ':client_id' => $client_id
        ]
      );
      $processed++;
    }

    return $processed;
  }

  static public function rebuild_products_temp_for_client( $client_id )
  {
    global $mdb;

    $client_id = (int) $client_id;
    if ( $client_id <= 0 )
    {
      return 0;
    }

    $client_bestseller_min_roas = (int) \factory\Products::get_client_bestseller_min_roas( $client_id );

    $rows = $mdb -> query(
      'SELECT
         p.id AS product_id,
         p.name,
         ph.campaign_id,
         ph.ad_group_id,
         COALESCE( SUM( ph.impressions ), 0 ) AS impressions,
         COALESCE( SUM( ph.clicks ), 0 ) AS clicks,
         COALESCE( SUM( ph.cost ), 0 ) AS cost,
         COALESCE( SUM( ph.conversions ), 0 ) AS conversions,
         COALESCE( SUM( ph.conversions_value ), 0 ) AS conversions_value
       FROM products AS p
       LEFT JOIN products_history AS ph ON p.id = ph.product_id AND ph.campaign_id > 0
       WHERE p.client_id = :client_id
       GROUP BY p.id, p.name, ph.campaign_id, ph.ad_group_id',
      [ ':client_id' => $client_id ]
    ) -> fetchAll( \PDO::FETCH_ASSOC );

    $product_ids = $mdb -> select( 'products', 'id', [ 'client_id' => $client_id ] );
    $product_ids = array_values( array_unique( array_map( 'intval', (array) $product_ids ) ) );

    if ( !empty( $product_ids ) )
    {
      $mdb -> delete( 'products_temp', [ 'product_id' => $product_ids ] );
    }

    // products_data jest globalne per product_id, wiec klasyfikacje liczymy globalnie.
    $global_totals = $mdb -> query(
      'SELECT
         p.id AS product_id,
         COALESCE( SUM( ph.impressions ), 0 ) AS impressions,
         COALESCE( SUM( ph.clicks ), 0 ) AS clicks,
         COALESCE( SUM( ph.cost ), 0 ) AS cost,
         COALESCE( SUM( ph.conversions ), 0 ) AS conversions,
         COALESCE( SUM( ph.conversions_value ), 0 ) AS conversions_value
       FROM products AS p
       LEFT JOIN products_history AS ph ON p.id = ph.product_id AND ph.campaign_id > 0
       WHERE p.client_id = :client_id
       GROUP BY p.id',
      [ ':client_id' => $client_id ]
    ) -> fetchAll( \PDO::FETCH_ASSOC );

    foreach ( $global_totals as $total )
    {
      $product_id = (int) ( $total['product_id'] ?? 0 );
      if ( $product_id <= 0 )
      {
        continue;
      }

      $total_cost = (float) ( $total['cost'] ?? 0 );
      $total_conversions = (float) ( $total['conversions'] ?? 0 );
      $total_conversion_value = (float) ( $total['conversions_value'] ?? 0 );
      $total_roas = ( $total_conversions > 0 && $total_cost > 0 ) ? round( $total_conversion_value / $total_cost, 2 ) * 100 : 0;

      $custom_label_4 = \factory\Products::get_product_data( $product_id, 'custom_label_4' );
      if ( $custom_label_4 == null || ( $custom_label_4 == 'bestseller' && $client_bestseller_min_roas > 0 ) )
      {
        $new_custom_label_4 = ( $total_roas > $client_bestseller_min_roas && $total_conversions > 10 ) ? 'bestseller' : null;

        $offers_data_tmp = $mdb -> get( 'products_data', '*', [ 'product_id' => $product_id ] );
        if ( isset( $offers_data_tmp['id'] ) )
        {
          $old_custom_label_4 = (string) ( $offers_data_tmp['custom_label_4'] ?? '' );

          if ( $new_custom_label_4 != $offers_data_tmp['custom_label_4'] )
          {
            $mdb -> insert( 'products_comments', [
              'product_id' => $product_id,
              'comment' => 'Zmiana pola "custom_label_4" na: ' . $new_custom_label_4,
              'type' => 1,
              'date_add' => date( 'Y-m-d' )
            ] );
          }

          $mdb -> update( 'products_data', [ 'custom_label_4' => $new_custom_label_4 ], [ 'id' => $offers_data_tmp['id'] ] );

          if ( $old_custom_label_4 !== (string) $new_custom_label_4 )
          {
            \controls\Products::sync_product_fields_to_merchant( $product_id, [
              'custom_label_4' => [
                'old' => $old_custom_label_4,
                'new' => (string) $new_custom_label_4
              ]
            ], 'cron_products' );
          }
        }
        else
        {
          $mdb -> insert( 'products_data', [
            'product_id' => $product_id,
            'custom_label_4' => $new_custom_label_4
          ] );

          if ( $new_custom_label_4 == 'bestseller' )
          {
            $mdb -> insert( 'products_comments', [
              'product_id' => $product_id,
              'comment' => 'Zmiana pola "custom_label_4" na: bestseller',
              'type' => 1,
              'date_add' => date( 'Y-m-d' )
            ] );
          }

          \controls\Products::sync_product_fields_to_merchant( $product_id, [
            'custom_label_4' => [
              'old' => '',
              'new' => (string) $new_custom_label_4
            ]
          ], 'cron_products' );
        }
      }
    }

    $processed_rows = 0;

    foreach ( $rows as $row )
    {
      $product_id = (int) ( $row['product_id'] ?? 0 );
      if ( $product_id <= 0 )
      {
        continue;
      }

      $campaign_id = (int) ( $row['campaign_id'] ?? 0 );
      $ad_group_id = (int) ( $row['ad_group_id'] ?? 0 );
      $impressions = (int) ( $row['impressions'] ?? 0 );
      $clicks = (int) ( $row['clicks'] ?? 0 );
      $cost = (float) ( $row['cost'] ?? 0 );
      $conversions = (float) ( $row['conversions'] ?? 0 );
      $conversions_value = (float) ( $row['conversions_value'] ?? 0 );

      // Pomijamy puste scope bez danych.
      if ( $impressions <= 0 && $clicks <= 0 && $cost <= 0 && $conversions <= 0 && $conversions_value <= 0 )
      {
        continue;
      }

      $cpc = $clicks > 0 ? round( $cost / $clicks, 6 ) : 0;
      $roas = ( $conversions > 0 && $cost > 0 ) ? round( $conversions_value / $cost, 2 ) * 100 : 0;
      $impressions_30 = (int) \factory\Products::get_impressions_30( $product_id, $campaign_id, $ad_group_id );
      $clicks_30 = (int) \factory\Products::get_clicks_30( $product_id, $campaign_id, $ad_group_id );

      $mdb -> insert( 'products_temp', [
        'product_id' => $product_id,
        'campaign_id' => $campaign_id,
        'ad_group_id' => $ad_group_id,
        'name' => $row['name'],
        'impressions' => $impressions,
        'impressions_30' => $impressions_30,
        'clicks' => $clicks,
        'clicks_30' => $clicks_30,
        'ctr' => ( $impressions > 0 ) ? round( $clicks / $impressions, 4 ) * 100 : 0,
        'cost' => $cost,
        'conversions' => $conversions,
        'conversions_value' => $conversions_value,
        'cpc' => $cpc,
        'roas' => $roas,
      ] );

      $processed_rows++;
    }

    return $processed_rows;
  }

  static public function cron_products_history_30()
  {
    global $mdb;
    self::touch_cron_invocation( __FUNCTION__ );

    $start_time = microtime(true);

    $client_id = \S::get( 'client_id' );

    if ( !$client_id )
    {
      echo json_encode( [ 'result' => "Nie podano ID klienta." ] );
      exit;
    }

    if ( !$mdb -> count( 'clients', [ 'id' => $client_id ] ) )
    {
      echo json_encode( [ 'result' => "Nie znaleziono klienta o podanym ID.", "client" => "Nie istnieje" ] );
      exit;
    }

    $products = $mdb -> select( 'products', 'id', [ 'client_id' => $client_id ] );
    foreach ( $products as $product )
    {
      $scopes = $mdb -> query( 'SELECT DISTINCT campaign_id, ad_group_id, date_add FROM products_history WHERE product_id = ' . $product . ' AND campaign_id > 0 AND updated = 1 ORDER BY date_add DESC' ) -> fetchAll( \PDO::FETCH_ASSOC );
      foreach ( $scopes as $scope )
      {
        $campaign_id = (int) ( $scope['campaign_id'] ?? 0 );
        $ad_group_id = (int) ( $scope['ad_group_id'] ?? 0 );
        $date_add = $scope['date_add'] ?? '';

        self::cron_product_history_30_save( $product, $date_add, $campaign_id, $ad_group_id );
        $mdb -> update( 'products_history', [ 'updated' => 0 ], [ 'AND' => [
          'product_id' => $product,
          'campaign_id' => $campaign_id,
          'ad_group_id' => $ad_group_id,
          'date_add' => $date_add
        ] ] );
      }
    }

    $end_time = microtime(true);
    $execution_time = $end_time - $start_time;
    echo json_encode( [ 'result' => "Agregacja zakonczona, dane zapisane do offers_history_30. Czas wykonania skryptu: " . round($execution_time, 4) . " sekund." ] );
    exit;
  }

  static public function get_roas_all_time( $product_id, $date_to, $campaign_id = 0, $ad_group_id = 0 )
  {
    global $mdb;

    $product_id = (int) $product_id;
    $campaign_id = (int) $campaign_id;
    $ad_group_id = (int) $ad_group_id;

    $sql = 'SELECT SUM(conversions_value) / SUM(cost) * 100 AS roas_all_time
            FROM products_history
            WHERE product_id = :product_id
              AND date_add <= :date_to
              AND campaign_id = :campaign_id
              AND ad_group_id = :ad_group_id';

    $roas_all_time = $mdb -> query( $sql, [
      ':product_id' => $product_id,
      ':date_to' => $date_to,
      ':campaign_id' => $campaign_id,
      ':ad_group_id' => $ad_group_id
    ] ) -> fetchColumn();
    return round( $roas_all_time, 2 );
  }

  static public function cron_product_history_30_save( $product_id, $date_to, $campaign_id = 0, $ad_group_id = 0 )
  {
    global $mdb;

    $product_id = (int) $product_id;
    $campaign_id = (int) $campaign_id;
    $ad_group_id = (int) $ad_group_id;

    if ( $campaign_id <= 0 )
    {
      return;
    }

    $data = $mdb -> query(
      'SELECT
         date_add,
         SUM( impressions ) AS impressions,
         SUM( clicks ) AS clicks,
         SUM( cost ) AS cost,
         SUM( conversions ) AS conversions,
         SUM( conversions_value ) AS conversions_value
       FROM products_history
       WHERE product_id = :product_id
         AND campaign_id = :campaign_id
         AND ad_group_id = :ad_group_id
         AND date_add <= :date_to
       GROUP BY date_add
       ORDER BY date_add DESC
       LIMIT 30',
      [
        ':product_id' => $product_id,
        ':campaign_id' => $campaign_id,
        ':ad_group_id' => $ad_group_id,
        ':date_to' => $date_to
      ]
    ) -> fetchAll( \PDO::FETCH_ASSOC );

    // Inicjalizacja tablic do przechowywania danych
    $offers_data = [];

    // Grupowanie danych wedug produktow
    foreach ( $data as $entry )
    {
      if ( !isset( $offers_data[$product_id] ) )
      {
        $offers_data[$product_id] = [
          'impressions' => 0,
          'clicks' => 0,
          'cost' => 0.0,
          'conversions' => 0,
          'conversions_value' => 0.0,
          'roas' => 0,
          'days_counted' => []
        ];
      }

      // Sumowanie danych wedug produktu
      $offers_data[$product_id]['impressions'] += $entry['impressions'];
      $offers_data[$product_id]['clicks'] += $entry['clicks'];
      $offers_data[$product_id]['cost'] += $entry['cost'];
      $offers_data[$product_id]['conversions'] += $entry['conversions'];
      $offers_data[$product_id]['conversions_value'] += $entry['conversions_value'];
      $offers_data[$product_id]['days_counted'][] = $entry['date_add'];
    }

    foreach ( $offers_data as $offer )
    {
      $day_count = count( $offer['days_counted'] );

      $impressions = $offer['impressions'];
      $clicks = $offer['clicks'];
      $ctr = ( $clicks > 0 and $impressions ) ? round( $clicks / $impressions, 4 ) * 100 : 0;
      $cost = $offer['cost'];
      $conversions = $offer['conversions'];
      $conversions_value = $offer['conversions_value'];
      $roas = ( $conversions_value > 0 and $cost ) ? round( $conversions_value / $cost, 2 ) * 100 : 0;

      $days_count_for_product = (int) $mdb -> query(
        'SELECT COUNT( DISTINCT date_add )
         FROM products_history
         WHERE product_id = :product_id
           AND campaign_id = :campaign_id
           AND ad_group_id = :ad_group_id
           AND date_add <= :date_to',
        [
          ':product_id' => $product_id,
          ':campaign_id' => $campaign_id,
          ':ad_group_id' => $ad_group_id,
          ':date_to' => $date_to
        ]
      ) -> fetchColumn();

      if ( $days_count_for_product >= 14 )
      {
        if ( $mdb -> count( 'products_history_30', [ 'AND' => [
          'product_id' => $product_id,
          'campaign_id' => $campaign_id,
          'ad_group_id' => $ad_group_id,
          'date_add' => $date_to
        ] ] ) > 0 )
        {
          $mdb -> update( 'products_history_30', [
            'impressions' => $impressions,
            'clicks' => $clicks,
            'ctr' => $ctr,
            'cost' => $cost,
            'conversions' => $conversions,
            'conversions_value' => $conversions_value,
            'roas' => $roas,
            'roas_all_time' => self::get_roas_all_time( $product_id, $date_to, $campaign_id, $ad_group_id )
          ], [ 'AND' => [
            'product_id' => $product_id,
            'campaign_id' => $campaign_id,
            'ad_group_id' => $ad_group_id,
            'date_add' => $date_to
          ] ] );
        }
        else
        {
          $mdb -> insert( 'products_history_30', [
            'product_id' => $product_id,
            'campaign_id' => $campaign_id,
            'ad_group_id' => $ad_group_id,
            'impressions' => $impressions,
            'clicks' => $clicks,
            'ctr' => $ctr,
            'cost' => $cost,
            'conversions' => $conversions,
            'conversions_value' => $conversions_value,
            'roas' => $roas,
            'roas_all_time' => self::get_roas_all_time( $product_id, $date_to, $campaign_id, $ad_group_id ),
            'date_add' => $date_to
          ] );
        }
      }
    }
  }

  static public function cron_xml()
  {
    $result = self::generate_custom_feed_for_client( \S::get( 'client_id' ), true );

    if ( ( $result['status'] ?? '' ) !== 'ok' )
    {
      $response = [ 'result' => $result['message'] ?? 'Nie udalo sie wygenerowac pliku XML.' ];
      if ( !empty( $result['client'] ) )
      {
        $response['client'] = $result['client'];
      }
      echo json_encode( $response );
      exit;
    }

    $url = (string) ( $result['url'] ?? '' );
    echo json_encode( [ 'result' => 'Plik XML zostal wygenerowany <a href="' . $url . '">' . $url . '</a>.' ] );
    exit;
  }

  static public function generate_custom_feed_for_client( $client_id, $touch_invocation = true )
  {
    global $mdb;

    $client_id = (int) $client_id;

    if ( $touch_invocation )
    {
      self::touch_cron_invocation( 'cron_xml' );
    }

    if ( $client_id <= 0 )
    {
      return [ 'status' => 'error', 'message' => 'Nie podano ID klienta.' ];
    }

    if ( !$mdb -> count( 'clients', [ 'id' => $client_id ] ) )
    {
      return [ 'status' => 'error', 'message' => 'Nie znaleziono klienta o podanym ID.', 'client' => 'Nie istnieje' ];
    }

    $results = $mdb -> query( 'SELECT * FROM products AS p INNER JOIN products_data AS pd ON p.id = pd.product_id WHERE p.client_id = ' . $client_id ) -> fetchAll( \PDO::FETCH_ASSOC );

    if ( empty( $results ) )
    {
      return [ 'status' => 'error', 'message' => 'Brak produktow do wygenerowania pliku XML.' ];
    }

    $doc = new \DOMDocument( '1.0', 'UTF-8' );
    $xmlRoot = $doc -> createElement( 'rss' );
    $xmlRoot = $doc -> appendChild( $xmlRoot );
    $xmlRoot -> setAttribute( 'version', '2.0' );
    $xmlRoot -> setAttributeNS( 'http://www.w3.org/2000/xmlns/', 'xmlns:g', 'http://base.google.com/ns/1.0' );

    $channelNode = $xmlRoot -> appendChild( $doc -> createElement( 'channel' ) );
    $channelNode -> appendChild( $doc -> createElement( 'title', 'Custom Feed' ) );
    $channelNode -> appendChild( $doc -> createElement( 'link', 'https://ads.pagedev.pl' ) );

    $fieldMappings = [
      'title' => 'g:title',
      'description' => 'g:description',
      'custom_label_4' => 'g:custom_label_4',
      'custom_label_3' => 'g:custom_label_3',
      'google_product_category' => 'g:google_product_category'
    ];

    foreach ( $results as $row )
    {
      $hasValidField = false;
      foreach ( $fieldMappings as $dbField => $xmlTag )
      {
        if ( !empty( $row[ $dbField ] ) )
        {
          $hasValidField = true;
          break;
        }
      }

      if ( !$hasValidField )
      {
        continue;
      }

      $itemNode = $channelNode -> appendChild( $doc -> createElement( 'item' ) );

      $offer_id = $mdb -> get( 'products', 'offer_id', [ 'id' => $row['product_id'] ] );
      $offer_id = str_replace( 'shopify_pl', 'shopify_PL', $offer_id );
      $itemNode -> appendChild( $doc -> createElement( 'id', $offer_id ) );

      foreach ( $fieldMappings as $dbField => $xmlTag )
      {
        if ( !empty( $row[ $dbField ] ) )
        {
          $itemNode -> appendChild( $doc -> createElement( $xmlTag, $row[ $dbField ] ) );
        }
      }
    }

    $xml_dir = dirname( __DIR__, 2 ) . DIRECTORY_SEPARATOR . 'xml';
    if ( !is_dir( $xml_dir ) )
    {
      @mkdir( $xml_dir, 0777, true );
    }

    $file_path = $xml_dir . DIRECTORY_SEPARATOR . 'custom-feed-' . $client_id . '.xml';
    $save_result = @file_put_contents( $file_path, $doc -> saveXML() );
    if ( $save_result === false )
    {
      return [ 'status' => 'error', 'message' => 'Nie udalo sie zapisac pliku XML na serwerze.' ];
    }

    $scheme = ( !empty( $_SERVER['HTTPS'] ) && $_SERVER['HTTPS'] !== 'off' ) ? 'https' : 'http';
    $host = $_SERVER['HTTP_HOST'] ?? ( $_SERVER['SERVER_NAME'] ?? 'localhost' );
    $url = $scheme . '://' . $host . '/xml/custom-feed-' . $client_id . '.xml';

    return [
      'status' => 'ok',
      'message' => 'Plik XML zostal wygenerowany.',
      'url' => $url,
      'client_id' => $client_id
    ];
  }

  static public function cron_phrases()
  {
    global $mdb;
    self::touch_cron_invocation( __FUNCTION__ );

    if ( !$client_id = \S::get( 'client_id' ) )
    {
      echo json_encode( [ 'result' => "Nie podano ID klienta." ] );
      exit;
    }

    if ( !$mdb -> count( 'clients', [ 'id' => $client_id ] ) )
    {
      echo json_encode( [ 'result' => "Nie znaleziono klienta o podanym ID.", "client" => "Nie istnieje" ] );
      exit;
    }

    $data = $mdb -> query( 'SELECT * FROM phrases AS p INNER JOIN phrases_history AS ph ON p.id = ph.phrase_id WHERE p.client_id = ' . $client_id ) -> fetchAll( \PDO::FETCH_ASSOC );

    $aggregated_data = [];

    foreach ( $data as $row )
    {
      $phrase_id = $row['phrase_id'];

      if ( !isset( $aggregated_data[$client_id] ) )
      {
        $aggregated_data[$client_id] = [];
      }

      if ( !isset( $aggregated_data[$client_id][$phrase_id] ) )
      {
        $aggregated_data[$client_id][$phrase_id] = [
          'phrase_id' => $phrase_id,
          'phrase' => $row['phrase'],
          'impressions' => 0,
          'clicks' => 0,
          'cost' => 0.0,
          'conversions' => 0,
          'conversions_value' => 0.0
        ];
      }

      $aggregated_data[$client_id][$phrase_id]['impressions'] += $row['impressions'];
      $aggregated_data[$client_id][$phrase_id]['clicks'] += $row['clicks'];
      $aggregated_data[$client_id][$phrase_id]['cost'] += $row['cost'];
      $aggregated_data[$client_id][$phrase_id]['conversions'] += $row['conversions'];
      $aggregated_data[$client_id][$phrase_id]['conversions_value'] += $row['conversions_value'];
    }

    $phrases_ids = $mdb -> select( 'phrases', 'id', [ 'client_id' => $client_id ] );
    foreach ( $phrases_ids as $phrase_id )
    {
      $phrases_ids_array[] = $phrase_id -> id;
    }

    $mdb -> delete( 'phrases_temp', [ 'phrase_id' => $phrases_ids_array ] );

    foreach ( $aggregated_data as $client_phrases )
    {
      foreach ( $client_phrases as $phrase_data )
      {
        $cpc = $phrase_data['clicks'] > 0 ? round( $phrase_data['cost'] / $phrase_data['clicks'], 6 ) : 0;
        $roas = ( $phrase_data['conversions'] > 0 and $phrase_data['cost'] ) ? round( $phrase_data['conversions_value'] / $phrase_data['cost'], 2 ) * 100 : 0;

        $mdb -> insert( 'phrases_temp', [
          'phrase_id' => $phrase_data['phrase_id'],
          'phrase' => $phrase_data['phrase'],
          'impressions' => $phrase_data['impressions'],
          'clicks' => $phrase_data['clicks'],
          'cost' => $phrase_data['cost'],
          'conversions' => $phrase_data['conversions'],
          'conversions_value' => $phrase_data['conversions_value'],
          'cpc' => $cpc,
          'roas' => $roas,
        ] );
      }
    }

    echo json_encode( [ 'result' => "Agregacja zakonczona, dane zapisane do phrases_temp." ] );
    exit;
  }

  static public function cron_phrases_history_30()
  {
    global $mdb;
    self::touch_cron_invocation( __FUNCTION__ );

    $start_time = microtime( true ); // Rozpoczcie mierzenia czasu

    $client_id = \S::get( 'client_id' ); // Pobranie ID klienta

    if ( !$client_id ) // Jeli nie podano ID klienta
    {
      echo json_encode( [ 'result' => "Nie podano ID klienta." ] ); // Wyswietlenie komunikatu
      exit; // Zakonczenie dziaania skryptu
    }

    if ( !$mdb -> count( 'clients', [ 'id' => $client_id ] ) ) // Sprawdzenie, czy klient istnieje
    {
      echo json_encode( [ 'result' => "Nie znaleziono klienta o podanym ID.", "client" => "Nie istnieje" ] ); // Wyswietlenie komunikatu
      exit; // Zakonczenie dziaania skryptu
    }

    // Pobranie biecej daty i daty sprzed 30 dni
    $phrases = $mdb -> query( 'SELECT * FROM phrases WHERE client_id = ' . $client_id ) -> fetchAll( \PDO::FETCH_ASSOC ); // Pobranie fraz dla danego klienta

    foreach ( $phrases as $phrase )
    {
      for ( $i = 0; $i < 30; $i++ )
      {
        $date_to = date( 'Y-m-d', strtotime( '-' . ( 1 + $i ) . ' days' ) );
        $date_from = date( 'Y-m-d', strtotime( '-' . ( 31 + $i ) . ' days' ) );

        $data_updated = false;

        if ( $mdb -> count( 'phrases_history', [ 'AND' => [ 'phrase_id' => $phrase['id'], 'date_add[>=]' => $date_from, 'date_add[<=]' => $date_to, 'updated' => 1 ] ] ) > 0 )
        {
          $data_updated = true;
        }

        if ( $data_updated )
        {
          self::cron_phrase_history_30_save( $phrase['id'], $date_from, $date_to );
        }
      }

      $mdb -> update( 'phrases_history', [ 'updated' => 0 ], [ 'AND' => [ 'phrase_id' => $phrase['id'], 'updated' => 1 ] ] );
    }

    $end_time = microtime( true ); // Zakonczenie mierzenia czasu
    $execution_time = $end_time - $start_time; // Obliczenie czasu wykonania

    echo json_encode( [ 'result' => "Agregacja zakonczona, dane zapisane do phrases_history_30. Czas wykonania skryptu: " . round( $execution_time, 4 ) . " sekund.", 'client' => \factory\Campaigns::get_client_name( $client_id ) ] ); // Wyswietlenie komunikatu
    exit;
  }

  // ===========================
  // KAMPANIE - Google Ads API
  // ===========================

  static public function cron_campaigns()
  {
    global $mdb, $settings;
    self::touch_cron_invocation( __FUNCTION__ );

    $api = new \services\GoogleAdsApi();

    if ( !$api -> is_configured() )
    {
      echo json_encode( [ 'result' => 'Google Ads API nie jest skonfigurowane. Uzupelnij dane w Ustawieniach.' ] );
      exit;
    }

    $sync_date = \S::get( 'date' ) ? date( 'Y-m-d', strtotime( \S::get( 'date' ) ) ) : date( 'Y-m-d' );
    $conversion_window_days = self::get_conversion_window_days();
    $sync_dates = self::build_backfill_dates( $sync_date, $conversion_window_days );
    $client_id = (int) \S::get( 'client_id' );

    if ( $client_id > 0 )
    {
      $client = $mdb -> get( 'clients', '*', [ 'AND' => [
        'id' => $client_id,
        'google_ads_customer_id[!]' => null,
        'deleted' => 0
      ] ] );

      if ( !$client )
      {
        echo json_encode( [ 'result' => 'Nie znaleziono klienta z poprawnym Google Ads Customer ID.', 'client_id' => $client_id ] );
        exit;
      }

      $sync = self::sync_campaigns_for_client( $client, $api, $sync_date, true );

      echo json_encode( [
        'result' => empty( $sync['errors'] ) ? 'Synchronizacja kampanii zakonczona.' : 'Synchronizacja kampanii zakonczona z bledami.',
        'client_id' => (int) $client['id'],
        'date' => $sync_date,
        'active_date' => $sync_date,
        'processed_records' => (int) $sync['processed_records'],
        'ad_groups_synced' => (int) ( $sync['ad_groups_synced'] ?? 0 ),
        'search_terms_synced' => (int) ( $sync['search_terms_synced'] ?? 0 ),
        'keywords_synced' => (int) ( $sync['keywords_synced'] ?? 0 ),
        'negative_keywords_synced' => (int) ( $sync['negative_keywords_synced'] ?? 0 ),
        'errors' => $sync['errors']
      ] );
      exit;
    }

    self::cleanup_old_sync_rows( 30 );

    $client_ids = $mdb -> query( "SELECT id FROM clients WHERE deleted = 0 AND google_ads_customer_id IS NOT NULL AND google_ads_customer_id <> '' ORDER BY id ASC" ) -> fetchAll( \PDO::FETCH_COLUMN );
    $client_ids = array_values( array_unique( array_map( 'intval', $client_ids ) ) );

    if ( empty( $client_ids ) )
    {
      echo json_encode( [ 'result' => 'Brak klientow z ustawionym Google Ads Customer ID.' ] );
      exit;
    }

    $clients_map = [];
    $clients = $mdb -> select( 'clients', '*', [
      'AND' => [
        'google_ads_customer_id[!]' => null,
        'deleted' => 0
      ],
      'ORDER' => [ 'id' => 'ASC' ]
    ] );
    foreach ( $clients as $c )
    {
      $clients_map[ (int) $c['id'] ] = $c;
    }

    self::ensure_sync_rows( 'campaigns', $sync_dates, $client_ids );

    $active_client_id = self::get_active_client( 'campaigns' );

    if ( !$active_client_id )
    {
      echo json_encode( [
        'result' => 'Wszyscy klienci kampanii zostali juz przetworzeni dla calego okna dat.',
        'date' => $sync_date,
        'active_date' => $sync_date,
        'conversion_window_days' => $conversion_window_days,
        'dates_synced' => $sync_dates,
        'processed_clients' => count( $client_ids ),
        'total_clients' => count( $client_ids )
      ] );
      exit;
    }

    $dates_per_run_default = (int) ( $settings['cron_campaigns_clients_per_run'] ?? 2 );
    if ( $dates_per_run_default <= 0 )
    {
      $dates_per_run_default = 2;
    }

    $dates_per_run = (int) \S::get( 'clients_per_run' );
    if ( $dates_per_run <= 0 )
    {
      $dates_per_run = $dates_per_run_default;
    }
    $dates_per_run = min( 20, $dates_per_run );

    $dates_batch = self::get_pending_dates_for_client( 'campaigns', $active_client_id, 'pending', $dates_per_run );

    if ( empty( $dates_batch ) )
    {
      echo json_encode( [
        'result' => 'Wszystkie daty klienta przetworzone. Kolejne wywolanie przejdzie do nastepnego klienta.',
        'date' => $sync_date,
        'active_client_id' => $active_client_id,
        'conversion_window_days' => $conversion_window_days,
        'dates_synced' => $sync_dates,
        'processed_clients' => count( $client_ids ),
        'total_clients' => count( $client_ids )
      ] );
      exit;
    }

    $selected_client = $clients_map[ $active_client_id ] ?? null;
    if ( !$selected_client )
    {
      echo json_encode( [
        'result' => 'Nie udalo sie znalezc klienta do synchronizacji kampanii. ID: ' . $active_client_id,
        'active_client_id' => $active_client_id,
        'errors' => [ 'Klient ID ' . $active_client_id . ' nie znaleziony w clients_map.' ]
      ] );
      exit;
    }

    $dates_processed_in_call = [];
    $errors = [];
    $processed_records_total = 0;
    $ad_groups_synced_total = 0;
    $search_terms_synced_total = 0;
    $keywords_synced_total = 0;
    $negative_keywords_synced_total = 0;

    foreach ( $dates_batch as $active_date )
    {
      $sync_details = ( $active_date === $sync_date );

      $sync = self::sync_campaigns_for_client( $selected_client, $api, $active_date, $sync_details );
      $processed_records_total += (int) ( $sync['processed_records'] ?? 0 );
      $ad_groups_synced_total += (int) ( $sync['ad_groups_synced'] ?? 0 );
      $search_terms_synced_total += (int) ( $sync['search_terms_synced'] ?? 0 );
      $keywords_synced_total += (int) ( $sync['keywords_synced'] ?? 0 );
      $negative_keywords_synced_total += (int) ( $sync['negative_keywords_synced'] ?? 0 );

      $error_msg = null;
      if ( !empty( $sync['errors'] ) )
      {
        $errors = array_merge( $errors, (array) $sync['errors'] );
        $error_msg = implode( '; ', (array) $sync['errors'] );
      }

      self::mark_sync_phase( 'campaigns', $active_date, $active_client_id, 'done', $error_msg );
      $dates_processed_in_call[] = $active_date;
    }

    $done_count = (int) $mdb -> query(
      "SELECT COUNT(*) FROM cron_sync_status WHERE pipeline = 'campaigns' AND client_id = :client_id AND phase = 'done'
       AND sync_date >= DATE_SUB(CURDATE(), INTERVAL 90 DAY)",
      [ ':client_id' => $active_client_id ]
    ) -> fetchColumn();
    $total_count = (int) $mdb -> query(
      "SELECT COUNT(*) FROM cron_sync_status WHERE pipeline = 'campaigns' AND client_id = :client_id
       AND sync_date >= DATE_SUB(CURDATE(), INTERVAL 90 DAY)",
      [ ':client_id' => $active_client_id ]
    ) -> fetchColumn();

    $remaining_dates = max( 0, $total_count - $done_count );
    $estimated_calls_remaining = (int) ceil( $remaining_dates / max( 1, $dates_per_run ) );

    echo json_encode( [
      'result' => empty( $errors ) ? 'Synchronizacja kampanii zakonczona.' : 'Synchronizacja kampanii zakonczona z bledami.',
      'active_client_id' => $active_client_id,
      'dates_per_run' => $dates_per_run,
      'dates_processed_in_call' => count( $dates_processed_in_call ),
      'processed_dates' => $dates_processed_in_call,
      'remaining_dates' => $remaining_dates,
      'estimated_calls_remaining' => $estimated_calls_remaining,
      'date' => $sync_date,
      'conversion_window_days' => $conversion_window_days,
      'dates_synced' => $sync_dates,
      'processed_records' => $processed_records_total,
      'ad_groups_synced' => $ad_groups_synced_total,
      'search_terms_synced' => $search_terms_synced_total,
      'keywords_synced' => $keywords_synced_total,
      'negative_keywords_synced' => $negative_keywords_synced_total,
      'total_clients' => count( $client_ids ),
      'errors' => $errors
    ] );
    exit;
  }

  static private function sync_campaigns_for_client( $client, $api, $as_of_date = null, $sync_details = true )
  {
    global $mdb;

    $as_of_date = $as_of_date ? date( 'Y-m-d', strtotime( $as_of_date ) ) : date( 'Y-m-d' );
    $sync_details = (bool) $sync_details;
    $processed = 0;
    $errors = [];
    $customer_id = $client['google_ads_customer_id'];
    $campaigns_db_map = [];

    $campaigns_30 = $api -> get_campaigns_30_days( $customer_id, $as_of_date );
    if ( $campaigns_30 === false )
    {
      $last_err = \services\GoogleAdsApi::get_setting( 'google_ads_last_error' );
      $errors[] = 'Blad API dla klienta ' . $client['name'] . ' (ID: ' . $customer_id . '): ' . $last_err;

      return [
        'processed_records' => 0,
        'ad_groups_synced' => 0,
        'search_terms_synced' => 0,
        'keywords_synced' => 0,
        'negative_keywords_synced' => 0,
        'errors' => $errors
      ];
    }

    if ( !is_array( $campaigns_30 ) )
    {
      $campaigns_30 = [];
    }

    $campaigns_all_time = $api -> get_campaigns_all_time( $customer_id, $as_of_date );
    if ( $campaigns_all_time === false )
    {
      $last_err = \services\GoogleAdsApi::get_setting( 'google_ads_last_error' );
      $errors[] = 'Blad pobierania danych all time dla klienta ' . $client['name'] . ' (ID: ' . $customer_id . '): ' . $last_err;

      return [
        'processed_records' => 0,
        'ad_groups_synced' => 0,
        'search_terms_synced' => 0,
        'keywords_synced' => 0,
        'negative_keywords_synced' => 0,
        'errors' => $errors
      ];
    }

    $all_time_map = [];
    $all_time_totals = [
      'cost' => 0.0,
      'conversion_value' => 0.0,
    ];

    if ( is_array( $campaigns_all_time ) )
    {
      foreach ( $campaigns_all_time as $cat )
      {
        $all_time_map[ (string) ( $cat['campaign_id'] ?? '' ) ] = (float) ( $cat['roas_all_time'] ?? 0 );
        $all_time_totals['cost'] += (float) ( $cat['cost_all_time'] ?? 0 );
        $all_time_totals['conversion_value'] += (float) ( $cat['conversion_value_all_time'] ?? 0 );
      }
    }

    $account_30_totals = [
      'budget' => 0.0,
      'money_spent' => 0.0,
      'conversion_value' => 0.0,
    ];

    foreach ( $campaigns_30 as $campaign )
    {
      $external_campaign_id = isset( $campaign['campaign_id'] ) ? (string) $campaign['campaign_id'] : '';
      if ( $external_campaign_id === '' )
      {
        continue;
      }

      $advertising_channel_type = strtoupper( trim( (string) ( $campaign['advertising_channel_type'] ?? '' ) ) );

      $account_30_totals['budget'] += (float) ( $campaign['budget'] ?? 0 );
      $account_30_totals['money_spent'] += (float) ( $campaign['money_spent'] ?? 0 );
      $account_30_totals['conversion_value'] += (float) ( $campaign['conversion_value'] ?? 0 );

      if ( !$mdb -> count( 'campaigns', [ 'AND' => [
        'client_id'   => $client['id'],
        'campaign_id' => $external_campaign_id
      ] ] ) )
      {
        $mdb -> insert( 'campaigns', [
          'client_id'     => $client['id'],
          'campaign_id'   => $external_campaign_id,
          'campaign_name' => $campaign['campaign_name'],
          'advertising_channel_type' => $advertising_channel_type !== '' ? $advertising_channel_type : null
        ] );
        $db_campaign_id = $mdb -> id();
      }
      else
      {
        $db_campaign_id = $mdb -> get( 'campaigns', 'id', [ 'AND' => [
          'client_id'   => $client['id'],
          'campaign_id' => $external_campaign_id
        ] ] );

        $mdb -> update( 'campaigns', [
          'campaign_name' => $campaign['campaign_name'],
          'advertising_channel_type' => $advertising_channel_type !== '' ? $advertising_channel_type : null
        ], [ 'id' => $db_campaign_id ] );
      }

      $bidding_strategy = self::format_bidding_strategy(
        $campaign['bidding_strategy'],
        $campaign['target_roas'] ?? 0
      );

      $history_data = [
        'roas_30_days'     => $campaign['roas_30_days'],
        'roas_all_time'    => $all_time_map[ $external_campaign_id ] ?? 0,
        'budget'           => $campaign['budget'],
        'money_spent'      => $campaign['money_spent'],
        'conversion_value' => $campaign['conversion_value'],
        'bidding_strategy' => $bidding_strategy,
      ];

      if ( $mdb -> count( 'campaigns_history', [ 'AND' => [
        'campaign_id' => $db_campaign_id,
        'date_add'    => $as_of_date
      ] ] ) )
      {
        $mdb -> update( 'campaigns_history', $history_data, [ 'AND' => [
          'campaign_id' => $db_campaign_id,
          'date_add'    => $as_of_date
        ] ] );
      }
      else
      {
        $history_data['campaign_id'] = $db_campaign_id;
        $history_data['date_add']    = $as_of_date;
        $mdb -> insert( 'campaigns_history', $history_data );
      }

      $campaigns_db_map[ $external_campaign_id ] = (int) $db_campaign_id;
      $processed++;
    }

    $account_roas_30 = ( $account_30_totals['money_spent'] > 0 )
      ? round( ( $account_30_totals['conversion_value'] / $account_30_totals['money_spent'] ) * 100, 2 )
      : 0;

    $account_roas_all_time = ( $all_time_totals['cost'] > 0 )
      ? round( ( $all_time_totals['conversion_value'] / $all_time_totals['cost'] ) * 100, 2 )
      : 0;

    if ( !$mdb -> count( 'campaigns', [ 'AND' => [
      'client_id'   => $client['id'],
      'campaign_id' => 0
    ] ] ) )
    {
      $mdb -> insert( 'campaigns', [
        'client_id'     => $client['id'],
        'campaign_id'   => 0,
        'campaign_name' => '--- konto ---',
        'advertising_channel_type' => null
      ] );
      $db_account_campaign_id = $mdb -> id();
    }
    else
    {
      $db_account_campaign_id = $mdb -> get( 'campaigns', 'id', [ 'AND' => [
        'client_id'   => $client['id'],
        'campaign_id' => 0
      ] ] );

      $mdb -> update( 'campaigns', [
        'campaign_name' => '--- konto ---',
        'advertising_channel_type' => null
      ], [ 'id' => $db_account_campaign_id ] );
    }

    $account_history_data = [
      'roas_30_days'     => $account_roas_30,
      'roas_all_time'    => $account_roas_all_time,
      'budget'           => $account_30_totals['budget'],
      'money_spent'      => $account_30_totals['money_spent'],
      'conversion_value' => $account_30_totals['conversion_value'],
      'bidding_strategy' => 'Konto (agregacja wszystkich kampanii)',
    ];

    if ( $mdb -> count( 'campaigns_history', [ 'AND' => [
      'campaign_id' => $db_account_campaign_id,
      'date_add'    => $as_of_date
    ] ] ) )
    {
      $mdb -> update( 'campaigns_history', $account_history_data, [ 'AND' => [
        'campaign_id' => $db_account_campaign_id,
        'date_add'    => $as_of_date
      ] ] );
    }
    else
    {
      $account_history_data['campaign_id'] = $db_account_campaign_id;
      $account_history_data['date_add']    = $as_of_date;
      $mdb -> insert( 'campaigns_history', $account_history_data );
    }

    $processed++;

    if ( !$sync_details )
    {
      return [
        'processed_records' => $processed,
        'ad_groups_synced' => 0,
        'search_terms_synced' => 0,
        'keywords_synced' => 0,
        'negative_keywords_synced' => 0,
        'errors' => $errors
      ];
    }

    $ad_groups_sync = self::sync_campaign_ad_groups_for_client( $campaigns_db_map, $customer_id, $api, $as_of_date );
    $search_terms_sync = self::sync_campaign_search_terms_for_client( $campaigns_db_map, $ad_groups_sync['ad_group_map'], $customer_id, $api, $as_of_date );
    $keywords_sync = self::sync_campaign_keywords_for_client( $campaigns_db_map, $ad_groups_sync['ad_group_map'], $customer_id, $api, $as_of_date );
    $negative_keywords_sync = self::sync_campaign_negative_keywords_for_client( $campaigns_db_map, $ad_groups_sync['ad_group_map'], $customer_id, $api, $as_of_date );

    $errors = array_merge( $errors, $ad_groups_sync['errors'], $search_terms_sync['errors'], $keywords_sync['errors'], $negative_keywords_sync['errors'] );

    return [
      'processed_records' => $processed,
      'ad_groups_synced' => (int) $ad_groups_sync['count'],
      'search_terms_synced' => (int) $search_terms_sync['count'],
      'keywords_synced' => (int) $keywords_sync['count'],
      'negative_keywords_synced' => (int) $negative_keywords_sync['count'],
      'errors' => $errors
    ];
  }

  static private function sync_campaign_ad_groups_for_client( $campaigns_db_map, $customer_id, $api, $date_sync )
  {
    global $mdb;

    $campaign_db_ids = array_values( array_unique( array_map( 'intval', array_values( $campaigns_db_map ) ) ) );
    if ( empty( $campaign_db_ids ) )
    {
      return [ 'count' => 0, 'ad_group_map' => [], 'errors' => [] ];
    }

    $ad_groups_30 = $api -> get_ad_groups_30_days( $customer_id );
    if ( $ad_groups_30 === false )
    {
      $last_err = \services\GoogleAdsApi::get_setting( 'google_ads_last_error' );
      return [ 'count' => 0, 'ad_group_map' => [], 'errors' => [ 'Blad pobierania grup reklam (30 dni): ' . $last_err ] ];
    }

    $ad_groups_all_time = $api -> get_ad_groups_all_time( $customer_id );
    if ( $ad_groups_all_time === false )
    {
      $last_err = \services\GoogleAdsApi::get_setting( 'google_ads_last_error' );
      return [ 'count' => 0, 'ad_group_map' => [], 'errors' => [ 'Blad pobierania grup reklam (all time): ' . $last_err ] ];
    }

    if ( !is_array( $ad_groups_30 ) )
    {
      $ad_groups_30 = [];
    }

    if ( !is_array( $ad_groups_all_time ) )
    {
      $ad_groups_all_time = [];
    }

    $map_30 = [];
    foreach ( $ad_groups_30 as $row )
    {
      $campaign_external_id = isset( $row['campaign_id'] ) ? (string) $row['campaign_id'] : '';
      $ad_group_external_id = isset( $row['ad_group_id'] ) ? (string) $row['ad_group_id'] : '';
      if ( $campaign_external_id === '' || $ad_group_external_id === '' )
      {
        continue;
      }
      $map_30[ $campaign_external_id . '|' . $ad_group_external_id ] = $row;
    }

    $map_all_time = [];
    foreach ( $ad_groups_all_time as $row )
    {
      $campaign_external_id = isset( $row['campaign_id'] ) ? (string) $row['campaign_id'] : '';
      $ad_group_external_id = isset( $row['ad_group_id'] ) ? (string) $row['ad_group_id'] : '';
      if ( $campaign_external_id === '' || $ad_group_external_id === '' )
      {
        continue;
      }
      $map_all_time[ $campaign_external_id . '|' . $ad_group_external_id ] = $row;
    }

    $mdb -> delete( 'campaign_ad_groups', [ 'campaign_id' => $campaign_db_ids ] );

    $keys = array_values( array_unique( array_merge( array_keys( $map_30 ), array_keys( $map_all_time ) ) ) );
    $ad_group_db_map = [];
    $count = 0;

    foreach ( $keys as $key )
    {
      $parts = explode( '|', $key, 2 );
      $campaign_external_id = $parts[0] ?? '';
      $ad_group_external_id = $parts[1] ?? '';

      $db_campaign_id = (int) ( $campaigns_db_map[ $campaign_external_id ] ?? 0 );
      if ( $db_campaign_id <= 0 || $ad_group_external_id === '' )
      {
        continue;
      }

      $row_30 = $map_30[ $key ] ?? [];
      $row_all_time = $map_all_time[ $key ] ?? [];

      $ad_group_name = trim( (string) ( $row_30['ad_group_name'] ?? ( $row_all_time['ad_group_name'] ?? '' ) ) );
      if ( $ad_group_name === '' )
      {
        $ad_group_name = 'Ad group #' . $ad_group_external_id;
      }

      $mdb -> insert( 'campaign_ad_groups', [
        'campaign_id' => $db_campaign_id,
        'ad_group_id' => (int) $ad_group_external_id,
        'ad_group_name' => $ad_group_name,
        'impressions_30' => (int) ( $row_30['impressions'] ?? 0 ),
        'clicks_30' => (int) ( $row_30['clicks'] ?? 0 ),
        'cost_30' => (float) ( $row_30['cost'] ?? 0 ),
        'conversions_30' => (float) ( $row_30['conversions'] ?? 0 ),
        'conversion_value_30' => (float) ( $row_30['conversion_value'] ?? 0 ),
        'roas_30' => (float) ( $row_30['roas'] ?? 0 ),
        'impressions_all_time' => (int) ( $row_all_time['impressions'] ?? 0 ),
        'clicks_all_time' => (int) ( $row_all_time['clicks'] ?? 0 ),
        'cost_all_time' => (float) ( $row_all_time['cost'] ?? 0 ),
        'conversions_all_time' => (float) ( $row_all_time['conversions'] ?? 0 ),
        'conversion_value_all_time' => (float) ( $row_all_time['conversion_value'] ?? 0 ),
        'roas_all_time' => (float) ( $row_all_time['roas'] ?? 0 ),
        'date_sync' => $date_sync
      ] );

      $db_ad_group_id = (int) $mdb -> id();
      if ( $db_ad_group_id > 0 )
      {
        $ad_group_db_map[ $key ] = $db_ad_group_id;
        $count++;
      }
    }

    return [ 'count' => $count, 'ad_group_map' => $ad_group_db_map, 'errors' => [] ];
  }

  static private function sync_campaign_search_terms_for_client( $campaigns_db_map, $ad_group_db_map, $customer_id, $api, $date_sync )
  {
    global $mdb;

    $campaign_db_ids = array_values( array_unique( array_map( 'intval', array_values( $campaigns_db_map ) ) ) );
    if ( empty( $campaign_db_ids ) )
    {
      return [ 'count' => 0, 'errors' => [] ];
    }

    $search_terms_30 = $api -> get_search_terms_30_days( $customer_id );
    if ( $search_terms_30 === false )
    {
      $last_err = \services\GoogleAdsApi::get_setting( 'google_ads_last_error' );
      return [ 'count' => 0, 'errors' => [ 'Blad pobierania fraz wyszukiwanych (30 dni): ' . $last_err ] ];
    }

    $search_terms_all_time = $api -> get_search_terms_all_time( $customer_id );
    if ( $search_terms_all_time === false )
    {
      $last_err = \services\GoogleAdsApi::get_setting( 'google_ads_last_error' );
      return [ 'count' => 0, 'errors' => [ 'Blad pobierania fraz wyszukiwanych (all time): ' . $last_err ] ];
    }

    if ( !is_array( $search_terms_30 ) )
    {
      $search_terms_30 = [];
    }

    if ( !is_array( $search_terms_all_time ) )
    {
      $search_terms_all_time = [];
    }

    $map_30 = [];
    foreach ( $search_terms_30 as $row )
    {
      $campaign_external_id = isset( $row['campaign_id'] ) ? (string) $row['campaign_id'] : '';
      $ad_group_external_id = isset( $row['ad_group_id'] ) ? (string) $row['ad_group_id'] : '';
      $search_term = trim( (string) ( $row['search_term'] ?? '' ) );
      if ( $campaign_external_id === '' || $ad_group_external_id === '' || $search_term === '' )
      {
        continue;
      }
      $map_30[ $campaign_external_id . '|' . $ad_group_external_id . '|' . strtolower( $search_term ) ] = $row;
    }

    $map_all_time = [];
    foreach ( $search_terms_all_time as $row )
    {
      $campaign_external_id = isset( $row['campaign_id'] ) ? (string) $row['campaign_id'] : '';
      $ad_group_external_id = isset( $row['ad_group_id'] ) ? (string) $row['ad_group_id'] : '';
      $search_term = trim( (string) ( $row['search_term'] ?? '' ) );
      if ( $campaign_external_id === '' || $ad_group_external_id === '' || $search_term === '' )
      {
        continue;
      }
      $map_all_time[ $campaign_external_id . '|' . $ad_group_external_id . '|' . strtolower( $search_term ) ] = $row;
    }

    $mdb -> delete( 'campaign_search_terms', [ 'campaign_id' => $campaign_db_ids ] );

    $keys = array_values( array_unique( array_merge( array_keys( $map_30 ), array_keys( $map_all_time ) ) ) );
    $count = 0;

    foreach ( $keys as $key )
    {
      $parts = explode( '|', $key, 3 );
      $campaign_external_id = $parts[0] ?? '';
      $ad_group_external_id = $parts[1] ?? '';
      $db_campaign_id = (int) ( $campaigns_db_map[ $campaign_external_id ] ?? 0 );
      $db_ad_group_id = (int) ( $ad_group_db_map[ $campaign_external_id . '|' . $ad_group_external_id ] ?? 0 );

      if ( $db_campaign_id > 0 && $db_ad_group_id <= 0 && $ad_group_external_id === '0' )
      {
        $db_ad_group_id = self::ensure_campaign_level_ad_group( $db_campaign_id, $date_sync );
        if ( $db_ad_group_id > 0 )
        {
          $ad_group_db_map[ $campaign_external_id . '|0' ] = $db_ad_group_id;
        }
      }

      if ( $db_campaign_id <= 0 || $db_ad_group_id <= 0 )
      {
        continue;
      }

      $row_30 = $map_30[ $key ] ?? [];
      $row_all_time = $map_all_time[ $key ] ?? [];

      $search_term = trim( (string) ( $row_30['search_term'] ?? ( $row_all_time['search_term'] ?? '' ) ) );
      if ( $search_term === '' )
      {
        continue;
      }

      $clicks_30 = (int) ( $row_30['clicks'] ?? 0 );
      $clicks_all_time = (int) ( $row_all_time['clicks'] ?? 0 );
      if ( $clicks_30 <= 0 && $clicks_all_time <= 0 )
      {
        continue;
      }

      $mdb -> insert( 'campaign_search_terms', [
        'campaign_id' => $db_campaign_id,
        'ad_group_id' => $db_ad_group_id,
        'search_term' => $search_term,
        'impressions_30' => (int) ( $row_30['impressions'] ?? 0 ),
        'clicks_30' => $clicks_30,
        'cost_30' => (float) ( $row_30['cost'] ?? 0 ),
        'conversions_30' => (float) ( $row_30['conversions'] ?? 0 ),
        'conversion_value_30' => (float) ( $row_30['conversion_value'] ?? 0 ),
        'roas_30' => (float) ( $row_30['roas'] ?? 0 ),
        'impressions_all_time' => (int) ( $row_all_time['impressions'] ?? 0 ),
        'clicks_all_time' => $clicks_all_time,
        'cost_all_time' => (float) ( $row_all_time['cost'] ?? 0 ),
        'conversions_all_time' => (float) ( $row_all_time['conversions'] ?? 0 ),
        'conversion_value_all_time' => (float) ( $row_all_time['conversion_value'] ?? 0 ),
        'roas_all_time' => (float) ( $row_all_time['roas'] ?? 0 ),
        'date_sync' => $date_sync
      ] );

      $count++;
    }

    return [ 'count' => $count, 'errors' => [] ];
  }

  static private function ensure_campaign_level_ad_group( $db_campaign_id, $date_sync )
  {
    global $mdb;

    $db_campaign_id = (int) $db_campaign_id;
    if ( $db_campaign_id <= 0 )
    {
      return 0;
    }

    $existing_id = (int) $mdb -> get( 'campaign_ad_groups', 'id', [
      'AND' => [
        'campaign_id' => $db_campaign_id,
        'ad_group_id' => 0
      ]
    ] );

    if ( $existing_id > 0 )
    {
      return $existing_id;
    }

    $mdb -> insert( 'campaign_ad_groups', [
      'campaign_id' => $db_campaign_id,
      'ad_group_id' => 0,
      'ad_group_name' => 'PMax (bez grup reklam)',
      'impressions_30' => 0,
      'clicks_30' => 0,
      'cost_30' => 0,
      'conversions_30' => 0,
      'conversion_value_30' => 0,
      'roas_30' => 0,
      'impressions_all_time' => 0,
      'clicks_all_time' => 0,
      'cost_all_time' => 0,
      'conversions_all_time' => 0,
      'conversion_value_all_time' => 0,
      'roas_all_time' => 0,
      'date_sync' => $date_sync
    ] );

    return (int) $mdb -> id();
  }

  static private function sync_campaign_keywords_for_client( $campaigns_db_map, $ad_group_db_map, $customer_id, $api, $date_sync )
  {
    global $mdb;

    $campaign_db_ids = array_values( array_unique( array_map( 'intval', array_values( $campaigns_db_map ) ) ) );
    if ( empty( $campaign_db_ids ) )
    {
      return [ 'count' => 0, 'errors' => [] ];
    }

    $keywords_30 = $api -> get_ad_keywords_30_days( $customer_id );
    if ( $keywords_30 === false )
    {
      $last_err = \services\GoogleAdsApi::get_setting( 'google_ads_last_error' );
      return [ 'count' => 0, 'errors' => [ 'Blad pobierania slow kluczowych (30 dni): ' . $last_err ] ];
    }

    $keywords_all_time = $api -> get_ad_keywords_all_time( $customer_id );
    if ( $keywords_all_time === false )
    {
      $last_err = \services\GoogleAdsApi::get_setting( 'google_ads_last_error' );
      return [ 'count' => 0, 'errors' => [ 'Blad pobierania slow kluczowych (all time): ' . $last_err ] ];
    }

    if ( !is_array( $keywords_30 ) )
    {
      $keywords_30 = [];
    }

    if ( !is_array( $keywords_all_time ) )
    {
      $keywords_all_time = [];
    }

    $map_30 = [];
    foreach ( $keywords_30 as $row )
    {
      $campaign_external_id = isset( $row['campaign_id'] ) ? (string) $row['campaign_id'] : '';
      $ad_group_external_id = isset( $row['ad_group_id'] ) ? (string) $row['ad_group_id'] : '';
      $keyword_text = trim( (string) ( $row['keyword_text'] ?? '' ) );
      $match_type = trim( (string) ( $row['match_type'] ?? '' ) );

      if ( $campaign_external_id === '' || $ad_group_external_id === '' || $keyword_text === '' )
      {
        continue;
      }

      $map_30[ $campaign_external_id . '|' . $ad_group_external_id . '|' . strtolower( $keyword_text ) . '|' . strtolower( $match_type ) ] = $row;
    }

    $map_all_time = [];
    foreach ( $keywords_all_time as $row )
    {
      $campaign_external_id = isset( $row['campaign_id'] ) ? (string) $row['campaign_id'] : '';
      $ad_group_external_id = isset( $row['ad_group_id'] ) ? (string) $row['ad_group_id'] : '';
      $keyword_text = trim( (string) ( $row['keyword_text'] ?? '' ) );
      $match_type = trim( (string) ( $row['match_type'] ?? '' ) );

      if ( $campaign_external_id === '' || $ad_group_external_id === '' || $keyword_text === '' )
      {
        continue;
      }

      $map_all_time[ $campaign_external_id . '|' . $ad_group_external_id . '|' . strtolower( $keyword_text ) . '|' . strtolower( $match_type ) ] = $row;
    }

    $mdb -> delete( 'campaign_keywords', [ 'campaign_id' => $campaign_db_ids ] );

    $keys = array_values( array_unique( array_merge( array_keys( $map_30 ), array_keys( $map_all_time ) ) ) );
    $count = 0;

    foreach ( $keys as $key )
    {
      $parts = explode( '|', $key, 4 );
      $campaign_external_id = $parts[0] ?? '';
      $ad_group_external_id = $parts[1] ?? '';

      $db_campaign_id = (int) ( $campaigns_db_map[ $campaign_external_id ] ?? 0 );
      $db_ad_group_id = (int) ( $ad_group_db_map[ $campaign_external_id . '|' . $ad_group_external_id ] ?? 0 );

      if ( $db_campaign_id <= 0 || $db_ad_group_id <= 0 )
      {
        continue;
      }

      $row_30 = $map_30[ $key ] ?? [];
      $row_all_time = $map_all_time[ $key ] ?? [];

      $keyword_text = trim( (string) ( $row_30['keyword_text'] ?? ( $row_all_time['keyword_text'] ?? '' ) ) );
      if ( $keyword_text === '' )
      {
        continue;
      }

      $match_type = trim( (string) ( $row_30['match_type'] ?? ( $row_all_time['match_type'] ?? '' ) ) );
      $clicks_30 = (int) ( $row_30['clicks'] ?? 0 );
      $clicks_all_time = (int) ( $row_all_time['clicks'] ?? 0 );

      if ( $clicks_30 <= 0 && $clicks_all_time <= 0 )
      {
        continue;
      }

      $mdb -> insert( 'campaign_keywords', [
        'campaign_id' => $db_campaign_id,
        'ad_group_id' => $db_ad_group_id,
        'keyword_text' => $keyword_text,
        'match_type' => $match_type,
        'impressions_30' => (int) ( $row_30['impressions'] ?? 0 ),
        'clicks_30' => $clicks_30,
        'cost_30' => (float) ( $row_30['cost'] ?? 0 ),
        'conversions_30' => (float) ( $row_30['conversions'] ?? 0 ),
        'conversion_value_30' => (float) ( $row_30['conversion_value'] ?? 0 ),
        'roas_30' => (float) ( $row_30['roas'] ?? 0 ),
        'impressions_all_time' => (int) ( $row_all_time['impressions'] ?? 0 ),
        'clicks_all_time' => $clicks_all_time,
        'cost_all_time' => (float) ( $row_all_time['cost'] ?? 0 ),
        'conversions_all_time' => (float) ( $row_all_time['conversions'] ?? 0 ),
        'conversion_value_all_time' => (float) ( $row_all_time['conversion_value'] ?? 0 ),
        'roas_all_time' => (float) ( $row_all_time['roas'] ?? 0 ),
        'date_sync' => $date_sync
      ] );

      $count++;
    }

    return [ 'count' => $count, 'errors' => [] ];
  }

  static private function sync_campaign_negative_keywords_for_client( $campaigns_db_map, $ad_group_db_map, $customer_id, $api, $date_sync )
  {
    global $mdb;

    $campaign_db_ids = array_values( array_unique( array_map( 'intval', array_values( $campaigns_db_map ) ) ) );
    if ( empty( $campaign_db_ids ) )
    {
      return [ 'count' => 0, 'errors' => [] ];
    }

    $negatives = $api -> get_negative_keywords( $customer_id );
    if ( $negatives === false )
    {
      $last_err = \services\GoogleAdsApi::get_setting( 'google_ads_last_error' );
      return [ 'count' => 0, 'errors' => [ 'Blad pobierania fraz wykluczajacych: ' . $last_err ] ];
    }

    if ( !is_array( $negatives ) )
    {
      $negatives = [];
    }

    $mdb -> delete( 'campaign_negative_keywords', [ 'campaign_id' => $campaign_db_ids ] );

    $count = 0;
    $seen = [];

    foreach ( $negatives as $row )
    {
      $campaign_external_id = isset( $row['campaign_id'] ) ? (string) $row['campaign_id'] : '';
      $db_campaign_id = (int) ( $campaigns_db_map[ $campaign_external_id ] ?? 0 );
      if ( $db_campaign_id <= 0 )
      {
        continue;
      }

      $scope = ( $row['scope'] ?? '' ) === 'ad_group' ? 'ad_group' : 'campaign';
      $db_ad_group_id = null;

      if ( $scope === 'ad_group' )
      {
        $ad_group_external_id = isset( $row['ad_group_id'] ) ? (string) $row['ad_group_id'] : '';
        $mapped_ad_group_id = (int) ( $ad_group_db_map[ $campaign_external_id . '|' . $ad_group_external_id ] ?? 0 );
        if ( $mapped_ad_group_id <= 0 )
        {
          continue;
        }
        $db_ad_group_id = $mapped_ad_group_id;
      }

      $keyword_text = trim( (string) ( $row['keyword_text'] ?? '' ) );
      if ( $keyword_text === '' )
      {
        continue;
      }

      $match_type = trim( (string) ( $row['match_type'] ?? '' ) );
      $uniq_key = $db_campaign_id . '|' . (int) $db_ad_group_id . '|' . $scope . '|' . strtolower( $keyword_text ) . '|' . strtolower( $match_type );

      if ( isset( $seen[ $uniq_key ] ) )
      {
        continue;
      }
      $seen[ $uniq_key ] = true;

      $mdb -> insert( 'campaign_negative_keywords', [
        'campaign_id' => $db_campaign_id,
        'ad_group_id' => $db_ad_group_id,
        'scope' => $scope,
        'keyword_text' => $keyword_text,
        'match_type' => $match_type,
        'date_sync' => $date_sync
      ] );

      $count++;
    }

    return [ 'count' => $count, 'errors' => [] ];
  }

  static private function pick_clients_batch_by_cursor( $clients, $limit, $cursor_client_id = 0 )
  {
    $clients = is_array( $clients ) ? array_values( $clients ) : [];
    if ( empty( $clients ) )
    {
      return [];
    }

    $limit = max( 1, (int) $limit );
    $total = count( $clients );
    if ( $limit >= $total )
    {
      return $clients;
    }

    $start_index = 0;
    $cursor_client_id = (int) $cursor_client_id;
    if ( $cursor_client_id > 0 )
    {
      $found_next = false;
      foreach ( $clients as $idx => $client )
      {
        $current_id = (int) ( $client['id'] ?? 0 );
        if ( $current_id > $cursor_client_id )
        {
          $start_index = $idx;
          $found_next = true;
          break;
        }
      }

      if ( !$found_next )
      {
        $start_index = 0;
      }
    }

    $batch = [];
    for ( $i = 0; $i < $limit; $i++ )
    {
      $batch[] = $clients[( $start_index + $i ) % $total];
    }

    return $batch;
  }

  // ===========================
  // CRON SYNC STATUS HELPERS
  // ===========================

  static private function ensure_sync_rows( $pipeline, $sync_dates, $client_ids )
  {
    global $mdb;

    if ( empty( $client_ids ) || empty( $sync_dates ) )
    {
      return;
    }

    $stmt = $mdb -> pdo -> prepare(
      "INSERT INTO cron_sync_status (client_id, pipeline, sync_date, phase)
       VALUES (:client_id, :pipeline, :sync_date, 'pending')
       ON DUPLICATE KEY UPDATE
         phase = IF(phase = 'done' AND completed_at < CURDATE(), 'pending', phase),
         started_at = IF(phase = 'done' AND completed_at < CURDATE(), NULL, started_at),
         completed_at = IF(phase = 'done' AND completed_at < CURDATE(), NULL, completed_at),
         error_message = IF(phase = 'done' AND completed_at < CURDATE(), NULL, error_message)"
    );

    foreach ( $sync_dates as $date )
    {
      foreach ( $client_ids as $cid )
      {
        $stmt -> execute( [
          ':client_id' => (int) $cid,
          ':pipeline' => $pipeline,
          ':sync_date' => $date
        ] );
      }
    }
  }

  static private function get_active_sync_date( $pipeline )
  {
    global $mdb;

    $row = $mdb -> query(
      "SELECT sync_date FROM cron_sync_status WHERE pipeline = :pipeline AND phase != 'done' AND sync_date >= DATE_SUB(CURDATE(), INTERVAL 90 DAY) ORDER BY sync_date ASC LIMIT 1",
      [ ':pipeline' => $pipeline ]
    ) -> fetch( \PDO::FETCH_ASSOC );

    return $row ? $row['sync_date'] : null;
  }

  static private function get_pending_clients( $pipeline, $sync_date, $source_phase, $limit )
  {
    global $mdb;

    $rows = $mdb -> query(
      "SELECT cs.client_id FROM cron_sync_status cs INNER JOIN clients c ON cs.client_id = c.id AND c.deleted = 0 WHERE cs.pipeline = :pipeline AND cs.sync_date = :sync_date AND cs.phase = :phase ORDER BY cs.client_id ASC LIMIT " . (int) $limit,
      [ ':pipeline' => $pipeline, ':sync_date' => $sync_date, ':phase' => $source_phase ]
    ) -> fetchAll( \PDO::FETCH_COLUMN );

    return is_array( $rows ) ? array_map( 'intval', $rows ) : [];
  }

  static private function mark_sync_phase( $pipeline, $sync_date, $client_id, $new_phase, $error_msg = null )
  {
    global $mdb;

    $update_data = [ 'phase' => $new_phase ];

    if ( $new_phase === 'done' )
    {
      $update_data['completed_at'] = date( 'Y-m-d H:i:s' );
    }
    else if ( $new_phase !== 'pending' )
    {
      $update_data['started_at'] = date( 'Y-m-d H:i:s' );
    }

    if ( $error_msg !== null )
    {
      $update_data['error_message'] = $error_msg;
    }

    $mdb -> update( 'cron_sync_status', $update_data, [
      'AND' => [
        'client_id' => (int) $client_id,
        'pipeline' => $pipeline,
        'sync_date' => $sync_date
      ]
    ] );
  }

  static private function determine_products_phase( $sync_date )
  {
    global $mdb;

    $phases_order = [ 'pending', 'fetch', 'aggregate_30' ];

    foreach ( $phases_order as $phase )
    {
      $count = (int) $mdb -> query(
        "SELECT COUNT(*) FROM cron_sync_status cs INNER JOIN clients c ON cs.client_id = c.id AND c.deleted = 0 WHERE cs.pipeline = 'products' AND cs.sync_date = :sync_date AND cs.phase = :phase",
        [ ':sync_date' => $sync_date, ':phase' => $phase ]
      ) -> fetchColumn();

      if ( $count > 0 )
      {
        return $phase;
      }
    }

    return null;
  }

  static private function get_active_client( $pipeline )
  {
    global $mdb;

    $row = $mdb -> query(
      "SELECT DISTINCT cs.client_id
       FROM cron_sync_status cs
       INNER JOIN clients c ON cs.client_id = c.id AND c.deleted = 0
       WHERE cs.pipeline = :pipeline
         AND cs.phase != 'done'
         AND cs.sync_date >= DATE_SUB(CURDATE(), INTERVAL 90 DAY)
       ORDER BY cs.client_id ASC
       LIMIT 1",
      [ ':pipeline' => $pipeline ]
    ) -> fetch( \PDO::FETCH_ASSOC );

    return $row ? (int) $row['client_id'] : null;
  }

  static private function get_pending_dates_for_client( $pipeline, $client_id, $phase, $limit )
  {
    global $mdb;

    $rows = $mdb -> query(
      "SELECT cs.sync_date
       FROM cron_sync_status cs
       WHERE cs.pipeline = :pipeline
         AND cs.client_id = :client_id
         AND cs.phase = :phase
         AND cs.sync_date >= DATE_SUB(CURDATE(), INTERVAL 90 DAY)
       ORDER BY cs.sync_date ASC
       LIMIT " . (int) $limit,
      [ ':pipeline' => $pipeline, ':client_id' => (int) $client_id, ':phase' => $phase ]
    ) -> fetchAll( \PDO::FETCH_COLUMN );

    return is_array( $rows ) ? $rows : [];
  }

  static private function determine_client_products_phase( $client_id )
  {
    global $mdb;

    $phases_order = [ 'pending', 'fetch', 'aggregate_30' ];

    foreach ( $phases_order as $phase )
    {
      $count = (int) $mdb -> query(
        "SELECT COUNT(*) FROM cron_sync_status cs
         INNER JOIN clients c ON cs.client_id = c.id AND c.deleted = 0
         WHERE cs.pipeline = 'products'
           AND cs.client_id = :client_id
           AND cs.phase = :phase
           AND cs.sync_date >= DATE_SUB(CURDATE(), INTERVAL 90 DAY)",
        [ ':client_id' => (int) $client_id, ':phase' => $phase ]
      ) -> fetchColumn();

      if ( $count > 0 )
      {
        return $phase;
      }
    }

    return null;
  }

  static private function cleanup_old_sync_rows( $days = 30 )
  {
    global $mdb;

    $mdb -> query(
      "DELETE FROM cron_sync_status WHERE phase = 'done' AND completed_at < DATE_SUB(NOW(), INTERVAL :days DAY)",
      [ ':days' => (int) $days ]
    );

    $mdb -> query(
      "DELETE cs FROM cron_sync_status cs LEFT JOIN clients c ON cs.client_id = c.id WHERE c.id IS NULL OR c.deleted = 1"
    );
  }

  static private function get_conversion_window_days()
  {
    $request_value = (int) \S::get( 'conversion_window_days' );
    if ( $request_value > 0 )
    {
      return min( 90, $request_value );
    }

    $setting_value = (int) self::get_setting_value( 'google_ads_conversion_window_days', 7 );
    if ( $setting_value <= 0 )
    {
      return 7;
    }

    return min( 90, $setting_value );
  }

  static private function build_backfill_dates( $end_date, $window_days )
  {
    $end_timestamp = strtotime( $end_date );
    if ( !$end_timestamp )
    {
      $end_timestamp = strtotime( date( 'Y-m-d' ) );
    }

    $window_days = max( 1, min( 90, (int) $window_days ) );
    $dates = [];

    for ( $i = $window_days - 1; $i >= 0; $i-- )
    {
      $dates[] = date( 'Y-m-d', strtotime( '-' . $i . ' days', $end_timestamp ) );
    }

    return $dates;
  }

  static private function get_setting_value( $setting_key, $default = null )
  {
    global $mdb;

    $value = $mdb -> get( 'settings', 'setting_value', [ 'setting_key' => $setting_key ] );

    if ( $value === null || $value === false )
    {
      return $default;
    }

    return $value;
  }

  static private function set_setting_value( $setting_key, $setting_value )
  {
    global $mdb;

    if ( $mdb -> count( 'settings', [ 'setting_key' => $setting_key ] ) )
    {
      $mdb -> update( 'settings', [ 'setting_value' => $setting_value ], [ 'setting_key' => $setting_key ] );
      return;
    }

    $mdb -> insert( 'settings', [
      'setting_key' => $setting_key,
      'setting_value' => $setting_value
    ] );
  }

  static private function touch_cron_invocation( $action_name )
  {
    $now_timestamp = time();
    $now = date( 'Y-m-d H:i:s', $now_timestamp );
    $last_action_invoked_at = self::get_setting_value( 'cron_last_invoked_' . $action_name . '_at', '' );
    $last_action_timestamp = strtotime( (string) $last_action_invoked_at );

    if ( $last_action_timestamp )
    {
      $interval_seconds = $now_timestamp - $last_action_timestamp;

      // Pomijamy skrajne wartosci (np. pierwsze uruchomienie po dluzszej przerwie).
      if ( $interval_seconds >= 1 && $interval_seconds <= 21600 )
      {
        $avg_key = 'cron_avg_interval_' . $action_name . '_sec';
        $samples_key = 'cron_avg_interval_' . $action_name . '_samples';

        $avg_interval = (float) self::get_setting_value( $avg_key, 0 );
        $samples = (int) self::get_setting_value( $samples_key, 0 );

        $weight = min( 99, max( 0, $samples ) );
        if ( $weight <= 0 || $avg_interval <= 0 )
        {
          $new_avg = (float) $interval_seconds;
          $new_samples = 1;
        }
        else
        {
          $new_avg = ( ( $avg_interval * $weight ) + $interval_seconds ) / ( $weight + 1 );
          $new_samples = min( 100, $weight + 1 );
        }

        self::set_setting_value( $avg_key, (string) round( $new_avg, 2 ) );
        self::set_setting_value( $samples_key, (string) $new_samples );
        self::set_setting_value( 'cron_last_interval_' . $action_name . '_sec', (string) (int) $interval_seconds );
      }
    }

    self::set_setting_value( 'cron_last_invoked_at', $now );
    self::set_setting_value( 'cron_last_invoked_' . $action_name . '_at', $now );
  }

  static private function format_bidding_strategy( $strategy_type, $target_roas = 0 )
  {
    $map = [
      'MAXIMIZE_CONVERSIONS'       => 'Maksymalizacja liczby konwersji',
      'MAXIMIZE_CONVERSION_VALUE'  => 'Maksymalizacja wartosci konwersji',
      'TARGET_ROAS'                => 'Docelowy ROAS',
      'TARGET_CPA'                 => 'Docelowy CPA',
      'MANUAL_CPC'                 => 'Reczny CPC',
      'MANUAL_CPM'                 => 'Reczny CPM',
      'TARGET_IMPRESSION_SHARE'    => 'Docelowy udzial w wyswietleniach',
    ];

    $label = $map[ $strategy_type ] ?? $strategy_type ?? 'brak';

    if ( $target_roas > 0 )
    {
      $label .= ' | docelowy ROAS: ' . round( $target_roas * 100 ) . '%';
    }

    return $label;
  }

  // ===========================
  // FRAZY - history 30
  // ===========================

  static public function cron_phrase_history_30_save( $phrase_id, $date_from, $date_to )
  {
    global $mdb;

    $data = $mdb -> query( 'SELECT * FROM phrases_history WHERE phrase_id = ' . $phrase_id . ' AND date_add >= \'' . $date_from . '\' AND date_add <= \'' . $date_to . '\' ORDER BY date_add ASC' ) -> fetchAll( \PDO::FETCH_ASSOC );

    // Inicjalizacja tablic do przechowywania danych
    $phrases_data = [];

    // Grupowanie danych wedug fraz
    foreach ( $data as $entry )
    {
      $phrase_id = $entry['phrase_id'];

      if ( !isset( $phrases_data[$phrase_id] ) )
      {
        $phrases_data[$phrase_id] = [
          'impressions' => 0,
          'clicks' => 0,
          'cost' => 0.0,
          'conversions' => 0,
          'conversions_value' => 0.0,
          'roas' => 0,
          'days_counted' => []
        ];
      }

      // Sumowanie danych wedug fraz
      $phrases_data[$phrase_id]['impressions'] += $entry['impressions'];
      $phrases_data[$phrase_id]['clicks'] += $entry['clicks'];
      $phrases_data[$phrase_id]['cost'] += $entry['cost'];
      $phrases_data[$phrase_id]['conversions'] += $entry['conversions'];
      $phrases_data[$phrase_id]['conversions_value'] += $entry['conversions_value'];
      $phrases_data[$phrase_id]['days_counted'][] = $entry['date_add'];
    }

    foreach ( $phrases_data as $phrase )
    {
      $day_count = count( $phrase['days_counted'] );

      $impressions = $phrase['impressions'] / $day_count;
      $clicks = $phrase['clicks'] / $day_count;
      $cost = $phrase['cost'] / $day_count;
      $conversions = $phrase['conversions'] / $day_count;
      $conversions_value = $phrase['conversions_value'] / $day_count;
      $roas = ( $conversions_value > 0 and $cost ) ? round( $conversions_value / $cost, 2 ) * 100 : 0;

      if ( $day_count > 14 )
      {
        if ( $mdb -> count( 'phrases_history_30', [ 'AND' => [ 'phrase_id' => $phrase_id, 'date_add' => $date_to ] ] ) > 0 )
        {
          $mdb -> update( 'phrases_history_30', [
            'impressions' => $impressions,
            'clicks' => $clicks,
            'cost' => $cost,
            'conversions' => $conversions,
            'conversions_value' => $conversions_value,
            'roas' => $roas
          ], [ 'AND' => [ 'phrase_id' => $phrase_id, 'date_add' => $date_to ] ] );
        }
        else
        {
          $mdb -> insert( 'phrases_history_30', [
            'phrase_id' => $phrase_id,
            'impressions' => $impressions,
            'clicks' => $clicks,
            'cost' => $cost,
            'conversions' => $conversions,
            'conversions_value' => $conversions_value,
            'roas' => $roas,
            'date_add' => $date_to
          ] );
        }
      }
    }
  }
}