<?php

namespace Modules\EcommerceFinance\Repositories;

use Illuminate\Database\Query\Builder;
use Illuminate\Support\Facades\DB;
use Illuminate\Support\Facades\Schema;

/**
 * 订单售后费用明细（聚水潭「商品利润 → 导出明细数据 → 订单售后费用数据」导入）。
 *
 * 聚水潭报表已经按商品编码（组合装拆成组件）给出行和成本，页面直接读这张导入表，
 * 不再从订单明细里自己拆组合装。
 */
class AfterSalesCostRowRepository
{
    private const TABLE = 'ops_after_sales_cost_rows';

    private ?bool $available = null;

    public function available(): bool
    {
        if ($this->available === null) {
            try {
                $this->available = Schema::hasTable(self::TABLE)
                    && DB::table(self::TABLE)->exists();
            } catch (\Throwable) {
                $this->available = false;
            }
        }

        return $this->available;
    }

    /**
     * 导入数据是否覆盖本次筛选（有至少一行命中即视为覆盖）。
     *
     * @param array<string,mixed> $filters
     */
    public function covers(array $filters): bool
    {
        if (! $this->available()) {
            return false;
        }

        return $this->filtered($filters)->limit(1)->exists();
    }

    /**
     * @param array<string,mixed> $filters
     * @return array{rows:list<array<string,mixed>>,has_more:bool}
     */
    public function paginate(array $filters, int $page, int $limit): array
    {
        $page = max($page, 1);
        $limit = min(max($limit, 1), 100);

        $records = $this->filtered($filters)
            ->orderByDesc('order_time')
            ->orderByDesc('id')
            ->forPage($page, $limit + 1)
            ->get();

        $rows = [];

        foreach ($records as $record) {
            $payload = json_decode((string) $record->payload, true);
            $rows[] = is_array($payload) ? $payload : [];
        }

        return [
            'rows' => array_slice($rows, 0, $limit),
            'has_more' => count($rows) > $limit,
        ];
    }

    /**
     * 导入一行（命令内部使用，批量写入）。
     *
     * @param array<string,mixed> $payload
     */
    public static function toRecord(array $payload, ?string $importedAt = null): array
    {
        // 以整行内容做键：同一单同一商品可能出现多行，只有完全相同的一行才合并。
        ksort($payload);

        $rowKey = sha1((string) json_encode($payload, JSON_UNESCAPED_UNICODE | JSON_UNESCAPED_SLASHES));

        $now = $importedAt ?? now()->toDateTimeString();

        return [
            'row_key' => $rowKey,
            'shop_name' => mb_substr((string) ($payload['shop_name'] ?? ''), 0, 191),
            'shop_code' => mb_substr((string) ($payload['shop_code'] ?? ''), 0, 64),
            'online_order_no' => mb_substr((string) ($payload['online_order_no'] ?? ''), 0, 64),
            'internal_order_no' => mb_substr((string) ($payload['internal_order_no'] ?? ''), 0, 64),
            'product_code' => mb_substr((string) ($payload['product_code'] ?? ''), 0, 191),
            'order_time' => self::dateTime($payload['order_time'] ?? null),
            'product_quantity' => (float) ($payload['product_quantity'] ?? 0),
            'product_amount' => (float) ($payload['product_amount'] ?? 0),
            'product_cost' => (float) ($payload['product_cost'] ?? 0),
            'cost_source' => mb_substr((string) ($payload['cost_source'] ?? ''), 0, 32),
            'combine_type' => mb_substr((string) ($payload['combine_type'] ?? ''), 0, 32),
            'payload' => json_encode($payload, JSON_UNESCAPED_UNICODE | JSON_UNESCAPED_SLASHES),
            'imported_at' => $now,
            'created_at' => $now,
            'updated_at' => $now,
        ];
    }

    /** @param array<string,mixed> $filters */
    private function filtered(array $filters): Builder
    {
        $query = DB::table(self::TABLE);
        $from = trim((string) ($filters['from'] ?? ''));
        $to = trim((string) ($filters['to'] ?? ''));
        $orderNo = trim((string) ($filters['order_no'] ?? ''));
        $sku = trim((string) ($filters['sku_id'] ?? ''));
        $shops = array_values(array_filter((array) ($filters['shop_names'] ?? []), static fn ($v) => trim((string) $v) !== ''));

        if ($from !== '') {
            $query->where('order_time', '>=', $from . ' 00:00:00');
        }

        if ($to !== '') {
            $query->where('order_time', '<=', $to . ' 23:59:59');
        }

        if ($shops !== []) {
            $query->whereIn('shop_name', $shops);
        }

        if ($orderNo !== '') {
            $query->where(function (Builder $inner) use ($orderNo): void {
                $inner->where('online_order_no', 'like', $orderNo . '%')
                    ->orWhere('internal_order_no', 'like', $orderNo . '%')
                    ->orWhere('internal_order_no', '=', $orderNo);
            });
        }

        if ($sku !== '') {
            $query->where('product_code', 'like', '%' . addcslashes($sku, '%_\\') . '%');
        }

        return $query;
    }

    private static function dateTime(mixed $value): ?string
    {
        $value = trim((string) $value);

        if ($value === '') {
            return null;
        }

        $timestamp = strtotime($value);

        return $timestamp === false ? null : date('Y-m-d H:i:s', $timestamp);
    }
}