<?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\AfterSalesCostRowRepository;

/**
 * 导入聚水潭「商品利润 → 导出明细数据 → 订单售后费用数据」Excel。
 *
 * 该报表已按商品编码（组合装拆成组件）给出每行和成本，导入后订单售后费用明细页面
 * 在覆盖的店铺/月份范围内直接按这些明细行展示。
 */
class ImportAfterSalesCostRows extends Command
{
    protected $signature = 'order-data:import-after-sales-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「订单售后费用数据」Excel 到订单售后费用明细';

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

            return self::FAILURE;
        }

        $headers = (array) config('order_after_sales_cost.headers', []);
        $numberKeys = array_flip((array) config('order_after_sales_cost.number_keys', []));

        if ($headers === []) {
            $this->error('缺少表头映射：config/order_after_sales_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');
        $buffer = [];
        $total = 0;
        $written = 0;
        $skipped = 0;
        $shops = [];
        $mappedRows = 0;
        $minDate = null;
        $maxDate = null;
        $importedAt = now()->toDateTimeString();

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

                foreach ($headers as $header => $key) {
                    if (! array_key_exists($header, $row)) {
                        continue;
                    }

                    $value = trim((string) $row[$header]);
                    if ($value === '') {
                        continue;
                    }

                    if (isset($numberKeys[$key])) {
                        $value = is_numeric($value) ? (float) $value : 0.0;
                    } elseif (self::isDateKey($key)) {
                        $value = self::dateValue($value);
                    }

                    $payload[$key] = $value;
                }

                if ($payload !== []) {
                    $mappedRows++;
                }

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

                    continue;
                }

                $buffer[] = AfterSalesCostRowRepository::toRecord(
                    $payload,
                    $importedAt,
                    $period !== '' ? $period : null,
                );
                $shops[$shop] = true;
                $orderTime = $payload['order_time'] ?? null;

                if (is_string($orderTime) && $orderTime !== '') {
                    $minDate = $minDate === null || $orderTime < $minDate ? $orderTime : $minDate;
                    $maxDate = $maxDate === null || $orderTime > $maxDate ? $orderTime : $maxDate;
                }

                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.after-sales.imported-shop-options');
            }
            $this->error('读取失败：' . $exception->getMessage());

            return self::FAILURE;
        }

        if ($mappedRows === 0) {
            $this->error('表头和配置的映射对不上，请检查文件或 config/order_after_sales_cost.php');

            return self::FAILURE;
        }

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

        $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；订单时间 %s ~ %s；峰值内存 %.1f MB',
            $total,
            $written,
            $skipped,
            count($shops),
            $period !== '' ? $period : '-',
            $minDate ?? '-',
            $maxDate ?? '-',
            memory_get_peak_usage(true) / 1048576,
        ));

        return self::SUCCESS;
    }

    /** @param list<array<string,mixed>> $rows */
    private function flush(array $rows): int
    {
        DB::table('ops_after_sales_cost_rows')->upsert(
            $rows,
            ['row_key'],
            [
                'shop_name', 'shop_code', 'online_order_no', 'internal_order_no', 'product_code',
                'style_code', 'shop_product_code', 'shop_style_code',
                'order_time', 'source_period', 'product_quantity', 'product_amount', 'product_cost', 'cost_source',
                'combine_type', 'payload', 'imported_at', 'updated_at',
            ],
        );

        return count($rows);
    }

    private static function isDateKey(string $key): bool
    {
        return in_array($key, [
            'pay_time', 'order_complete_time', 'send_time', 'order_time', 'registration_time',
            'confirmation_time', 'warehouse_entry_time',
        ], true);
    }

    private static function dateValue(mixed $value): ?string
    {
        if ($value instanceof \DateTimeInterface) {
            return $value->format('Y-m-d H:i:s');
        }

        if (is_numeric($value) && (float) $value > 20000 && (float) $value < 80000) {
            $timestamp = ((float) $value - 25569) * 86400;

            return gmdate('Y-m-d H:i:s', (int) $timestamp);
        }

        $timestamp = strtotime((string) $value);

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