<?php

namespace App\Console\Commands;

use App\Services\MemberDailyReportService;
use Carbon\Carbon;
use Illuminate\Console\Command;
use Illuminate\Support\Facades\DB;
use Illuminate\Support\Facades\Schema;

class MemberDailyReport extends Command
{
    protected $signature = 'report:member-daily
        {date? : 结束日期 Y-m-d，默认今天}
        {--days=1 : 从 date 往前共重算几天（最多 31，定时任务用）}
        {--from= : 补算历史：从这天（Y-m-d）重算到 date，不限天数}
        {--all : 补算全部历史：从最早有数据的一天重算到 date}';

    protected $description = '生成会员每日盈亏报表（补算历史用 --from 或 --all）';

    public function handle(MemberDailyReportService $reports): int
    {
        $end = $this->date((string) ($this->argument('date') ?: now()->toDateString()));
        if (!$end) return self::FAILURE;

        if ($this->option('all')) {
            $start = $this->earliestDate();
            if ($start === null) {
                $this->info('没有任何会员数据，无需补算');
                return self::SUCCESS;
            }
            $start = Carbon::parse($start)->startOfDay();
        } elseif ($this->option('from')) {
            $start = $this->date((string) $this->option('from'));
            if (!$start) return self::FAILURE;
        } else {
            $start = $end->copy()->subDays(max(1, min(31, (int) $this->option('days'))) - 1);
        }
        if ($start->gt($end)) {
            $this->error('开始日期不能晚于结束日期');
            return self::FAILURE;
        }

        $total = (int) $start->diffInDays($end) + 1;
        if ($total > 1) $this->info("重算 {$start->toDateString()} ~ {$end->toDateString()}，共 {$total} 天");
        $rows = 0;
        // 从最近的一天往前算：补算过程中最新的数据先可用
        for ($day = $end->copy(), $i = 1; $day->gte($start); $day->subDay(), ++$i) {
            $count = $reports->refresh($day->toDateString());
            $rows += $count;
            $this->info(($total > 1 ? "[{$i}/{$total}] " : '') . $day->toDateString() . '：' . $count . ' 行');
        }
        if ($total > 1) $this->info("完成，共写入 {$rows} 行");
        return self::SUCCESS;
    }

    private function date(string $value): ?Carbon
    {
        $parsed = Carbon::createFromFormat('!Y-m-d', $value);
        if (!$parsed || $parsed->format('Y-m-d') !== $value) {
            $this->error('日期必须是有效的 Y-m-d：' . $value);
            return null;
        }
        return $parsed;
    }

    /** 最早有会员数据的日期：会员注册、充值、提现、三方充提、资金流水、已结算注单中最早的一天。 */
    private function earliestDate(): ?string
    {
        $dates = [];
        foreach ([['users', 'created_at'], ['recharges', 'created_at'], ['withdraws', 'created_at'], ['payment_orders', 'created_at'],
                     ['balance_logs', 'created_at'], ['share_bet_facts', 'settled_at']] as [$table, $column]) {
            if (!Schema::hasTable($table)) continue;
            $min = DB::table($table)->min($column);
            if ($min !== null && $min !== '') $dates[] = substr((string) $min, 0, 10);
        }
        return $dates === [] ? null : min($dates);
    }
}