<?php

namespace App\Console\Commands;

use App\Business\XlsxSheetReader;
use Illuminate\Console\Command;
use Illuminate\Support\Facades\Cache;
use Illuminate\Support\Facades\DB;
use Modules\EcommerceFinance\Repositories\PromotionCostRowRepository;

class ImportPromotionCostRows extends Command
{
    protected $signature = 'order-data:import-promotion-cost
                            {file : Excel 文件路径}
                            {--period= : 数据月份，格式 YYYY-MM}
                            {--chunk=500 : 每批写入行数}
                            {--dry-run : 只解析不入库}';

    protected $description = '导入聚水潭商品推广费用明细 Excel';

    public function handle(XlsxSheetReader $reader): int
    {
        $path = (string) $this->argument('file');
        $period = trim((string) $this->option('period'));

        if (! is_file($path)) {
            $this->error('文件不存在：' . $path);

            return self::FAILURE;
        }

        if (preg_match('/^\d{4}-(0[1-9]|1[0-2])$/', $period) !== 1) {
            $this->error('数据月份格式必须是 YYYY-MM：' . ($period !== '' ? $period : '(空)'));

            return self::FAILURE;
        }

        $headers = (array) config('order_promotion_cost.headers', []);
        if ($headers === []) {
            $this->error('缺少表头映射：config/order_promotion_cost.php');

            return self::FAILURE;
        }

        $this->info('流式读取文件：' . $path);

        $chunkSize = max((int) $this->option('chunk'), 100);
        $dryRun = (bool) $this->option('dry-run');
        $importedAt = now()->toDateTimeString();
        $buffer = [];
        $total = 0;
        $written = 0;
        $skipped = 0;
        $promotionFee = 0.0;
        $shops = [];

        try {
            foreach ($reader->rows($path, array_keys($headers)) as $row) {
                $total++;
                $payload = [];

                foreach ($headers as $header => $key) {
                    $value = trim((string) ($row[$header] ?? ''));
                    if ($value === '') {
                        continue;
                    }
                    $payload[$key] = $key === 'promotion_fee'
                        ? (is_numeric($value) ? (float) $value : 0.0)
                        : $value;
                }

                $shop = trim((string) ($payload['shop_name'] ?? ''));
                $product = trim((string) ($payload['product_code'] ?? ''));
                if ($shop === '' || $product === '') {
                    $skipped++;

                    continue;
                }

                $shops[$shop] = true;
                $promotionFee += (float) ($payload['promotion_fee'] ?? 0);
                $buffer[] = PromotionCostRowRepository::toRecord($payload, $period, $importedAt);

                if (! $dryRun && count($buffer) >= $chunkSize) {
                    $written += $this->flush($buffer);
                    $buffer = [];
                    $this->output->write("\r写入 " . $written . ' 行');
                }

                if ($dryRun && $buffer !== []) {
                    $buffer = [];
                }
            }
        } catch (\Throwable $exception) {
            if (! $dryRun) {
                Cache::forget('order-data.promotion.imported-shop-options:' . $period);
            }
            $this->error('读取失败：' . $exception->getMessage());

            return self::FAILURE;
        }

        if (! $dryRun && $buffer !== []) {
            $written += $this->flush($buffer);
        }
        if (! $dryRun) {
            Cache::forget('order-data.promotion.imported-shop-options:' . $period);
        }

        $this->newLine(2);
        $this->info(sprintf(
            '完成：读取 %d 行，写入 %d 行，跳过 %d 行；店铺 %d 个；数据月份 %s；推广费合计 %.2f；峰值内存 %.1f MB',
            $total,
            $written,
            $skipped,
            count($shops),
            $period,
            $promotionFee,
            memory_get_peak_usage(true) / 1048576,
        ));

        return self::SUCCESS;
    }

    /** @param list<array<string,mixed>> $rows */
    private function flush(array $rows): int
    {
        DB::table('ops_promotion_cost_rows')->upsert(
            $rows,
            ['row_key'],
            [
                'source_period', 'shop_name', 'product_code', 'style_code',
                'shop_product_code', 'shop_style_code', 'online_color_spec',
                'promotion_fee', 'payload', 'imported_at', 'updated_at',
            ],
        );

        return count($rows);
    }
}