<?php

namespace App\Console\Commands;

use App\Models\BalanceLog;
use App\Services\ShareCommissionRecorder;
use Carbon\Carbon;
use Illuminate\Console\Command;

class BackfillShareCommissions extends Command
{
    protected $signature = 'share:backfill-commissions
        {--start-date= : 返现入账起始日 Y-m-d，默认结束日前30天}
        {--end-date= : 返现入账结束日 Y-m-d，默认今天}
        {--chunk=500 : 每批读取条数，1至2000}
        {--write : 实际登记佣金明细；不传时只预览}';

    protected $description = '从已有充值返现流水补记分享佣金明细，不修改钱包或再次发奖';

    public function handle(ShareCommissionRecorder $recorder): int
    {
        try {
            $end = $this->parseDate((string)($this->option('end-date') ?: date('Y-m-d')));
            $start = $this->parseDate((string)($this->option('start-date') ?: $end->copy()->subDays(30)->toDateString()));
            if ($start->gt($end) || $start->diffInDays($end) > 366) {
                throw new \InvalidArgumentException('日期范围须先后有效，单次不超过366天');
            }
            $chunk = filter_var($this->option('chunk'), FILTER_VALIDATE_INT);
            if ($chunk === false || $chunk < 1 || $chunk > 2000) {
                throw new \InvalidArgumentException('chunk 必须是1至2000的整数');
            }
            $write = (bool)$this->option('write');
            $counts = ['scanned' => 0, 'created' => 0, 'pending' => 0, 'existing' => 0, 'skipped' => 0, 'incomplete_metadata' => 0];
            $reasons = [];
            $this->info(($write ? '写入登记' : '只读预览') . "：{$start->toDateString()} 至 {$end->toDateString()}");
            BalanceLog::where('change_type', '充值返现')->where('type', 1)->where('amount', '>', 0)
                ->whereBetween('created_at', [$start->toDateString() . ' 00:00:00', $end->toDateString() . ' 23:59:59'])
                ->chunkById($chunk, function ($rows) use ($recorder, $write, &$counts, &$reasons) {
                    foreach ($rows as $row) {
                        $result = $write ? $recorder->record($row) : $recorder->preview($row);
                        $counts['scanned']++;
                        $counts[$result['status']]++;
                        if (!empty($result['incomplete_metadata'])) $counts['incomplete_metadata']++;
                        if ($result['status'] === 'skipped') {
                            $reason = $result['reason'];
                            $reasons[$reason] = ($reasons[$reason] ?? 0) + 1;
                        }
                    }
                });
            $this->table(['项目', '条数'], array_map(fn ($key, $count) => [$key, $count], array_keys($counts), array_values($counts)));
            foreach ($reasons as $reason => $count) $this->line("跳过 {$reason}: {$count}");
            if (!$write) $this->info('预览未写入数据；确认后使用相同日期并加 --write 登记，钱包不会再次入账。');
            return self::SUCCESS;
        } catch (\Throwable $e) {
            $this->error($e->getMessage());
            return self::FAILURE;
        }
    }

    private function parseDate(string $value): Carbon
    {
        $date = Carbon::createFromFormat('!Y-m-d', $value, config('app.timezone', 'Asia/Shanghai'));
        if (!$date || $date->format('Y-m-d') !== $value) {
            throw new \InvalidArgumentException('日期必须为有效的 Y-m-d');
        }
        return $date;
    }
}