<?php

namespace Modules\EcommerceFinance\Repositories;

use Illuminate\Database\ConnectionInterface;
use Illuminate\Database\DatabaseManager;
use Illuminate\Support\Facades\Schema;

class JushuitanShopBalanceRepository
{
    public const TABLE = 'jushuitan_shop_balance_snapshots';

    private readonly ConnectionInterface $connection;

    public function __construct(DatabaseManager $database)
    {
        $this->connection = $database->connection(
            (string) config('upstream_mirrors.connection', 'business_mirror'),
        );
    }

    /**
     * @param iterable<object> $stores
     * @return array<int,array{status:string,balance:?float,source_store_name:?string,source_platform:?string}>
     */
    public function matchesForStores(iterable $stores, string $balanceDate): array
    {
        $stores = is_array($stores) ? $stores : iterator_to_array($stores);
        $result = [];

        foreach ($stores as $store) {
            $result[(int) $store->id] = $this->emptyMatch('not_ready');
        }

        if (! $this->hasTable()) {
            return $result;
        }

        $sourceRows = $this->connection->table(self::TABLE)
            ->where('balance_date', $balanceDate)
            ->orderBy('id')
            ->get([
                'id', 'source_platform', 'store_name', 'normalized_store_name',
                'platform_account_id', 'balance',
            ]);

        if ($sourceRows->isEmpty()) {
            return $result;
        }

        foreach ($stores as $store) {
            $names = array_values(array_unique(array_filter([
                self::normalizeStoreName((string) ($store->shop_name ?? '')),
                self::normalizeStoreName((string) ($store->erp_store_name ?? '')),
            ])));

            $matches = $sourceRows->filter(
                static fn (object $row): bool => in_array((string) $row->normalized_store_name, $names, true),
            )->values();

            if ($matches->isEmpty()) {
                $result[(int) $store->id] = $this->emptyMatch('unmatched');
                continue;
            }

            $targetPlatform = self::platformKey((string) ($store->store_platform ?? ''));
            if ($targetPlatform !== null) {
                $matches = $matches->filter(
                    static function (object $row) use ($targetPlatform): bool {
                        $sourcePlatform = self::platformKey((string) ($row->source_platform ?? ''))
                            ?? self::platformKey((string) self::sourcePlatform((string) ($row->store_name ?? '')));

                        return $sourcePlatform !== null && $sourcePlatform === $targetPlatform;
                    },
                )->values();

                if ($matches->isEmpty()) {
                    $result[(int) $store->id] = $this->emptyMatch('unmatched');
                    continue;
                }
            }

            if ($matches->count() !== 1) {
                $result[(int) $store->id] = $this->emptyMatch('ambiguous');
                continue;
            }

            $match = $matches->first();
            $result[(int) $store->id] = [
                'status' => 'matched',
                'balance' => (float) $match->balance,
                'source_store_name' => (string) $match->store_name,
                'source_platform' => $match->source_platform === null ? null : (string) $match->source_platform,
            ];
        }

        return $result;
    }

    public function countForDate(string $balanceDate): int
    {
        if (! $this->hasTable()) {
            return 0;
        }

        return $this->connection->table(self::TABLE)
            ->where('balance_date', $balanceDate)
            ->count();
    }

    public static function normalizeStoreName(string $value): string
    {
        $value = trim(str_replace(['－', '—', '–'], '-', $value));
        $value = preg_replace(
            '/^(支付宝|天猫|淘宝|阿里巴巴|1688|京东商城|京东|京喜小店|京喜|拼多多|抖音|快手|小红书|唯品会|得物|淘工厂)[\s\-_:：]+/u',
            '',
            $value,
        ) ?? $value;
        $value = preg_replace('/\s+/u', '', $value) ?? $value;

        return mb_substr(mb_strtolower($value), 0, 255);
    }

    public static function sourcePlatform(string $storeName): ?string
    {
        if (preg_match(
            '/^(支付宝|天猫|淘宝|阿里巴巴|1688|京东商城|京东|京喜小店|京喜|拼多多|抖音|快手|小红书|唯品会|得物|淘工厂)[\s\-—–_:：]+/u',
            trim($storeName),
            $matches,
        ) === 1) {
            return $matches[1];
        }

        return str_ends_with(mb_strtolower(trim($storeName)), '1688') ? '1688' : null;
    }

    private static function platformKey(string $platform): ?string
    {
        $platform = mb_strtolower(trim($platform));
        foreach ([
            'tmall' => ['天猫'],
            'taobao' => ['淘宝'],
            '1688' => ['1688', '阿里巴巴'],
            'jd' => ['京东'],
            'jingxi' => ['京喜'],
            'pinduoduo' => ['拼多多'],
            'douyin' => ['抖音', '头条放心购'],
            'kuaishou' => ['快手'],
            'xiaohongshu' => ['小红书'],
            'vipshop' => ['唯品会'],
            'dewu' => ['得物'],
            'taogongchang' => ['淘工厂'],
        ] as $key => $aliases) {
            foreach ($aliases as $alias) {
                if (str_contains($platform, mb_strtolower($alias))) {
                    return $key;
                }
            }
        }

        return null;
    }

    /** @return array{status:string,balance:null,source_store_name:null,source_platform:null} */
    private function emptyMatch(string $status): array
    {
        return [
            'status' => $status,
            'balance' => null,
            'source_store_name' => null,
            'source_platform' => null,
        ];
    }

    private function hasTable(): bool
    {
        return Schema::connection($this->connection->getName())->hasTable(self::TABLE);
    }
}