<?php
declare(strict_types=1);

namespace App\Modules\Settings;

use PDO;

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

    /**
     * @return array<string, array{orderpro_status_code:string, shoppro_status_name:string|null}>
     */
    public function listByIntegration(int $integrationId): array
    {
        $stmt = $this->pdo->prepare(
            'SELECT shoppro_status_code, shoppro_status_name, orderpro_status_code
            FROM order_status_mappings
            WHERE integration_id = :integration_id
            ORDER BY shoppro_status_code ASC'
        );
        $stmt->execute(['integration_id' => $integrationId]);

        $rows = $stmt->fetchAll();
        if (!is_array($rows)) {
            return [];
        }

        $result = [];
        foreach ($rows as $row) {
            if (!is_array($row)) {
                continue;
            }

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

            $result[$code] = [
                'orderpro_status_code' => trim((string) ($row['orderpro_status_code'] ?? '')),
                'shoppro_status_name' => isset($row['shoppro_status_name']) ? trim((string) $row['shoppro_status_name']) : null,
            ];
        }

        return $result;
    }

    /**
     * @param array<int, array{shoppro_status_code:string,shoppro_status_name:string|null,orderpro_status_code:string}> $mappings
     */
    public function replaceForIntegration(int $integrationId, array $mappings): void
    {
        $deleteStmt = $this->pdo->prepare('DELETE FROM order_status_mappings WHERE integration_id = :integration_id');
        $deleteStmt->execute(['integration_id' => $integrationId]);

        if ($mappings === []) {
            return;
        }

        $insertStmt = $this->pdo->prepare(
            'INSERT INTO order_status_mappings (
                integration_id, shoppro_status_code, shoppro_status_name, orderpro_status_code, created_at, updated_at
            ) VALUES (
                :integration_id, :shoppro_status_code, :shoppro_status_name, :orderpro_status_code, :created_at, :updated_at
            )'
        );

        $now = date('Y-m-d H:i:s');
        foreach ($mappings as $mapping) {
            $shopCode = trim((string) ($mapping['shoppro_status_code'] ?? ''));
            $orderCode = trim((string) ($mapping['orderpro_status_code'] ?? ''));
            if ($shopCode === '' || $orderCode === '') {
                continue;
            }

            $shopNameRaw = isset($mapping['shoppro_status_name']) ? trim((string) $mapping['shoppro_status_name']) : '';
            $shopName = $shopNameRaw === '' ? null : $shopNameRaw;

            $insertStmt->execute([
                'integration_id' => $integrationId,
                'shoppro_status_code' => $shopCode,
                'shoppro_status_name' => $shopName,
                'orderpro_status_code' => $orderCode,
                'created_at' => $now,
                'updated_at' => $now,
            ]);
        }
    }

    /**
     * @return array<string, string>
     */
    public function listOrderProToShopProMap(int $integrationId): array
    {
        $rows = $this->listByIntegration($integrationId);
        if ($rows === []) {
            return [];
        }

        $result = [];
        foreach ($rows as $shopCode => $mapping) {
            $orderProCode = trim((string) ($mapping['orderpro_status_code'] ?? ''));
            $normalizedOrderProCode = $this->normalizeCode($orderProCode);
            $normalizedShopCode = $this->normalizeCode((string) $shopCode);
            if ($normalizedOrderProCode === '' || $normalizedShopCode === '') {
                continue;
            }

            if (!isset($result[$normalizedOrderProCode])) {
                $result[$normalizedOrderProCode] = $normalizedShopCode;
            }
        }

        return $result;
    }

    private function normalizeCode(string $value): string
    {
        return trim(mb_strtolower($value));
    }
}