<?php
declare(strict_types=1);

namespace App\Modules\Orders;

use PDO;
use Throwable;

final class OrderImportRepository
{
    public function __construct(private readonly PDO $pdo)
    {
    }

    /**
     * @param array<string, mixed> $orderData
     * @param array<int, array<string, mixed>> $addresses
     * @param array<int, array<string, mixed>> $items
     * @param array<int, array<string, mixed>> $payments
     * @param array<int, array<string, mixed>> $shipments
     * @param array<int, array<string, mixed>> $notes
     * @param array<int, array<string, mixed>> $statusHistory
     * @return array{order_id:int, created:bool}
     */
    public function upsertOrderAggregate(
        array $orderData,
        array $addresses,
        array $items,
        array $payments,
        array $shipments,
        array $notes,
        array $statusHistory
    ): array {
        $this->pdo->beginTransaction();

        try {
            $source = trim((string) ($orderData['source'] ?? 'allegro'));
            $sourceOrderId = trim((string) ($orderData['source_order_id'] ?? ''));
            $existingOrderId = $this->findOrderIdBySource($source, $sourceOrderId);
            $created = $existingOrderId === null;
            $orderId = $created
                ? $this->insertOrder($orderData)
                : $this->updateOrder($existingOrderId, $orderData);

            $this->replaceAddresses($orderId, $addresses);
            $this->replaceItems($orderId, $items);
            $this->replaceNotes($orderId, $notes);

            if ($created) {
                $this->replacePayments($orderId, $payments);
                $this->replaceShipments($orderId, $shipments);
                $this->replaceStatusHistory($orderId, $statusHistory);
            }

            $this->pdo->commit();
        } catch (Throwable $exception) {
            if ($this->pdo->inTransaction()) {
                $this->pdo->rollBack();
            }
            throw $exception;
        }

        return [
            'order_id' => $orderId,
            'created' => $created,
        ];
    }

    private function findOrderIdBySource(string $source, string $sourceOrderId): ?int
    {
        $statement = $this->pdo->prepare(
            'SELECT id
            FROM orders
            WHERE source = :source AND source_order_id = :source_order_id
            LIMIT 1'
        );
        $statement->execute([
            'source' => $source,
            'source_order_id' => $sourceOrderId,
        ]);
        $value = $statement->fetchColumn();
        if ($value === false) {
            return null;
        }

        $id = (int) $value;
        return $id > 0 ? $id : null;
    }

    /**
     * @param array<string, mixed> $orderData
     */
    private function insertOrder(array $orderData): int
    {
        $statement = $this->pdo->prepare(
            'INSERT INTO orders (
                integration_id, source, source_order_id, external_order_id, external_platform_id, external_platform_account_id,
                external_status_id, external_payment_type_id, payment_status, external_carrier_id, external_carrier_account_id,
                customer_login, is_invoice, is_encrypted, is_canceled_by_buyer, currency,
                total_without_tax, total_with_tax, total_paid, send_date_min, send_date_max, ordered_at,
                source_created_at, source_updated_at, preferences_json, payload_json, fetched_at
            ) VALUES (
                :integration_id, :source, :source_order_id, :external_order_id, :external_platform_id, :external_platform_account_id,
                :external_status_id, :external_payment_type_id, :payment_status, :external_carrier_id, :external_carrier_account_id,
                :customer_login, :is_invoice, :is_encrypted, :is_canceled_by_buyer, :currency,
                :total_without_tax, :total_with_tax, :total_paid, :send_date_min, :send_date_max, :ordered_at,
                :source_created_at, :source_updated_at, :preferences_json, :payload_json, :fetched_at
            )'
        );
        $statement->execute($this->orderParams($orderData));

        $newId = (int) $this->pdo->lastInsertId();
        $this->pdo->prepare(
            "UPDATE orders SET internal_order_number = CONCAT('OP', LPAD(id, 9, '0')) WHERE id = :id AND (internal_order_number IS NULL OR internal_order_number = '')"
        )->execute(['id' => $newId]);

        return $newId;
    }

    /**
     * @param array<string, mixed> $orderData
     */
    private function updateOrder(int $orderId, array $orderData): int
    {
        $statement = $this->pdo->prepare(
            'UPDATE orders
            SET integration_id = :integration_id,
                source = :source,
                source_order_id = :source_order_id,
                external_order_id = :external_order_id,
                external_platform_id = :external_platform_id,
                external_platform_account_id = :external_platform_account_id,
                external_status_id = :external_status_id,
                external_payment_type_id = :external_payment_type_id,
                payment_status = :payment_status,
                external_carrier_id = :external_carrier_id,
                external_carrier_account_id = :external_carrier_account_id,
                customer_login = :customer_login,
                is_invoice = :is_invoice,
                is_encrypted = :is_encrypted,
                is_canceled_by_buyer = :is_canceled_by_buyer,
                currency = :currency,
                total_without_tax = :total_without_tax,
                total_with_tax = :total_with_tax,
                total_paid = :total_paid,
                send_date_min = :send_date_min,
                send_date_max = :send_date_max,
                ordered_at = :ordered_at,
                source_created_at = :source_created_at,
                source_updated_at = :source_updated_at,
                preferences_json = :preferences_json,
                payload_json = :payload_json,
                fetched_at = :fetched_at,
                updated_at = NOW()
            WHERE id = :id'
        );

        $params = $this->orderParams($orderData);
        $params['id'] = $orderId;
        $statement->execute($params);

        return $orderId;
    }

    /**
     * @param array<string, mixed> $orderData
     * @return array<string, mixed>
     */
    private function orderParams(array $orderData): array
    {
        return [
            'integration_id' => $orderData['integration_id'] ?? null,
            'source' => (string) ($orderData['source'] ?? 'allegro'),
            'source_order_id' => (string) ($orderData['source_order_id'] ?? ''),
            'external_order_id' => $orderData['external_order_id'] ?? null,
            'external_platform_id' => $orderData['external_platform_id'] ?? null,
            'external_platform_account_id' => $orderData['external_platform_account_id'] ?? null,
            'external_status_id' => $orderData['external_status_id'] ?? null,
            'external_payment_type_id' => $orderData['external_payment_type_id'] ?? null,
            'payment_status' => $orderData['payment_status'] ?? null,
            'external_carrier_id' => $orderData['external_carrier_id'] ?? null,
            'external_carrier_account_id' => $orderData['external_carrier_account_id'] ?? null,
            'customer_login' => $orderData['customer_login'] ?? null,
            'is_invoice' => !empty($orderData['is_invoice']) ? 1 : 0,
            'is_encrypted' => !empty($orderData['is_encrypted']) ? 1 : 0,
            'is_canceled_by_buyer' => !empty($orderData['is_canceled_by_buyer']) ? 1 : 0,
            'currency' => (string) ($orderData['currency'] ?? 'PLN'),
            'total_without_tax' => $orderData['total_without_tax'] ?? null,
            'total_with_tax' => $orderData['total_with_tax'] ?? null,
            'total_paid' => $orderData['total_paid'] ?? null,
            'send_date_min' => $orderData['send_date_min'] ?? null,
            'send_date_max' => $orderData['send_date_max'] ?? null,
            'ordered_at' => $orderData['ordered_at'] ?? null,
            'source_created_at' => $orderData['source_created_at'] ?? null,
            'source_updated_at' => $orderData['source_updated_at'] ?? null,
            'preferences_json' => $this->encodeJson($orderData['preferences_json'] ?? null),
            'payload_json' => $this->encodeJson($orderData['payload_json'] ?? null),
            'fetched_at' => $orderData['fetched_at'] ?? date('Y-m-d H:i:s'),
        ];
    }

    /**
     * @param array<int, array<string, mixed>> $rows
     */
    private function replaceAddresses(int $orderId, array $rows): void
    {
        $this->pdo->prepare('DELETE FROM order_addresses WHERE order_id = :order_id')->execute(['order_id' => $orderId]);
        if ($rows === []) {
            return;
        }

        $statement = $this->pdo->prepare(
            'INSERT INTO order_addresses (
                order_id, address_type, name, phone, email, street_name, street_number, city, zip_code, country,
                department, parcel_external_id, parcel_name, address_class, company_tax_number, company_name, payload_json
            ) VALUES (
                :order_id, :address_type, :name, :phone, :email, :street_name, :street_number, :city, :zip_code, :country,
                :department, :parcel_external_id, :parcel_name, :address_class, :company_tax_number, :company_name, :payload_json
            )'
        );

        foreach ($rows as $row) {
            $statement->execute([
                'order_id' => $orderId,
                'address_type' => (string) ($row['address_type'] ?? 'customer'),
                'name' => (string) ($row['name'] ?? ''),
                'phone' => $row['phone'] ?? null,
                'email' => $row['email'] ?? null,
                'street_name' => $row['street_name'] ?? null,
                'street_number' => $row['street_number'] ?? null,
                'city' => $row['city'] ?? null,
                'zip_code' => $row['zip_code'] ?? null,
                'country' => $row['country'] ?? null,
                'department' => $row['department'] ?? null,
                'parcel_external_id' => $row['parcel_external_id'] ?? null,
                'parcel_name' => $row['parcel_name'] ?? null,
                'address_class' => $row['address_class'] ?? null,
                'company_tax_number' => $row['company_tax_number'] ?? null,
                'company_name' => $row['company_name'] ?? null,
                'payload_json' => $this->encodeJson($row['payload_json'] ?? null),
            ]);
        }
    }

    /**
     * @param array<int, array<string, mixed>> $rows
     */
    private function replaceItems(int $orderId, array $rows): void
    {
        $this->pdo->prepare('DELETE FROM order_items WHERE order_id = :order_id')->execute(['order_id' => $orderId]);
        if ($rows === []) {
            return;
        }

        $statement = $this->pdo->prepare(
            'INSERT INTO order_items (
                order_id, source_item_id, external_item_id, ean, sku, original_name, original_code,
                original_price_with_tax, original_price_without_tax, media_url, quantity, tax_rate, item_status,
                unit, item_type, source_product_id, source_product_set_id, sort_order, payload_json, personalization
            ) VALUES (
                :order_id, :source_item_id, :external_item_id, :ean, :sku, :original_name, :original_code,
                :original_price_with_tax, :original_price_without_tax, :media_url, :quantity, :tax_rate, :item_status,
                :unit, :item_type, :source_product_id, :source_product_set_id, :sort_order, :payload_json, :personalization
            )'
        );

        foreach ($rows as $row) {
            $statement->execute([
                'order_id' => $orderId,
                'source_item_id' => $row['source_item_id'] ?? null,
                'external_item_id' => $row['external_item_id'] ?? null,
                'ean' => $row['ean'] ?? null,
                'sku' => $row['sku'] ?? null,
                'original_name' => (string) ($row['original_name'] ?? ''),
                'original_code' => $row['original_code'] ?? null,
                'original_price_with_tax' => $row['original_price_with_tax'] ?? null,
                'original_price_without_tax' => $row['original_price_without_tax'] ?? null,
                'media_url' => $row['media_url'] ?? null,
                'quantity' => $row['quantity'] ?? 1,
                'tax_rate' => $row['tax_rate'] ?? null,
                'item_status' => $row['item_status'] ?? null,
                'unit' => $row['unit'] ?? null,
                'item_type' => (string) ($row['item_type'] ?? 'product'),
                'source_product_id' => $row['source_product_id'] ?? null,
                'source_product_set_id' => $row['source_product_set_id'] ?? null,
                'sort_order' => (int) ($row['sort_order'] ?? 0),
                'payload_json' => $this->encodeJson($row['payload_json'] ?? null),
                'personalization' => $row['personalization'] ?? null,
            ]);
        }
    }

    /**
     * @param array<int, array<string, mixed>> $rows
     */
    private function replacePayments(int $orderId, array $rows): void
    {
        $this->pdo->prepare('DELETE FROM order_payments WHERE order_id = :order_id')->execute(['order_id' => $orderId]);
        if ($rows === []) {
            return;
        }

        $statement = $this->pdo->prepare(
            'INSERT INTO order_payments (
                order_id, source_payment_id, external_payment_id, payment_type_id, payment_date, amount, currency, comment, payload_json
            ) VALUES (
                :order_id, :source_payment_id, :external_payment_id, :payment_type_id, :payment_date, :amount, :currency, :comment, :payload_json
            )'
        );

        foreach ($rows as $row) {
            $statement->execute([
                'order_id' => $orderId,
                'source_payment_id' => $row['source_payment_id'] ?? null,
                'external_payment_id' => $row['external_payment_id'] ?? null,
                'payment_type_id' => (string) ($row['payment_type_id'] ?? 'unknown'),
                'payment_date' => $row['payment_date'] ?? null,
                'amount' => $row['amount'] ?? null,
                'currency' => $row['currency'] ?? null,
                'comment' => $row['comment'] ?? null,
                'payload_json' => $this->encodeJson($row['payload_json'] ?? null),
            ]);
        }
    }

    /**
     * @param array<int, array<string, mixed>> $rows
     */
    private function replaceShipments(int $orderId, array $rows): void
    {
        $this->pdo->prepare('DELETE FROM order_shipments WHERE order_id = :order_id')->execute(['order_id' => $orderId]);
        if ($rows === []) {
            return;
        }

        $statement = $this->pdo->prepare(
            'INSERT INTO order_shipments (
                order_id, source_shipment_id, external_shipment_id, tracking_number, carrier_provider_id, posted_at, media_uuid, payload_json
            ) VALUES (
                :order_id, :source_shipment_id, :external_shipment_id, :tracking_number, :carrier_provider_id, :posted_at, :media_uuid, :payload_json
            )'
        );

        foreach ($rows as $row) {
            $statement->execute([
                'order_id' => $orderId,
                'source_shipment_id' => $row['source_shipment_id'] ?? null,
                'external_shipment_id' => $row['external_shipment_id'] ?? null,
                'tracking_number' => (string) ($row['tracking_number'] ?? ''),
                'carrier_provider_id' => (string) ($row['carrier_provider_id'] ?? 'unknown'),
                'posted_at' => $row['posted_at'] ?? null,
                'media_uuid' => $row['media_uuid'] ?? null,
                'payload_json' => $this->encodeJson($row['payload_json'] ?? null),
            ]);
        }
    }

    /**
     * @param array<int, array<string, mixed>> $rows
     */
    private function replaceNotes(int $orderId, array $rows): void
    {
        $this->pdo->prepare('DELETE FROM order_notes WHERE order_id = :order_id')->execute(['order_id' => $orderId]);
        if ($rows === []) {
            return;
        }

        $statement = $this->pdo->prepare(
            'INSERT INTO order_notes (
                order_id, source_note_id, note_type, created_at_external, comment, payload_json
            ) VALUES (
                :order_id, :source_note_id, :note_type, :created_at_external, :comment, :payload_json
            )'
        );

        foreach ($rows as $row) {
            $statement->execute([
                'order_id' => $orderId,
                'source_note_id' => $row['source_note_id'] ?? null,
                'note_type' => (string) ($row['note_type'] ?? 'message'),
                'created_at_external' => $row['created_at_external'] ?? null,
                'comment' => (string) ($row['comment'] ?? ''),
                'payload_json' => $this->encodeJson($row['payload_json'] ?? null),
            ]);
        }
    }

    /**
     * @param array<int, array<string, mixed>> $rows
     */
    private function replaceStatusHistory(int $orderId, array $rows): void
    {
        $this->pdo->prepare('DELETE FROM order_status_history WHERE order_id = :order_id')->execute(['order_id' => $orderId]);
        if ($rows === []) {
            return;
        }

        $statement = $this->pdo->prepare(
            'INSERT INTO order_status_history (
                order_id, from_status_id, to_status_id, changed_at, change_source, comment, payload_json
            ) VALUES (
                :order_id, :from_status_id, :to_status_id, :changed_at, :change_source, :comment, :payload_json
            )'
        );

        foreach ($rows as $row) {
            $statement->execute([
                'order_id' => $orderId,
                'from_status_id' => $row['from_status_id'] ?? null,
                'to_status_id' => (string) ($row['to_status_id'] ?? ''),
                'changed_at' => $row['changed_at'] ?? date('Y-m-d H:i:s'),
                'change_source' => (string) ($row['change_source'] ?? 'import'),
                'comment' => $row['comment'] ?? null,
                'payload_json' => $this->encodeJson($row['payload_json'] ?? null),
            ]);
        }
    }

    private function encodeJson(mixed $value): ?string
    {
        if ($value === null || $value === '') {
            return null;
        }
        if (!is_array($value)) {
            return null;
        }

        return json_encode($value, JSON_UNESCAPED_UNICODE | JSON_UNESCAPED_SLASHES) ?: null;
    }
}