<?php

namespace App\Console\Commands;

use App\Models\Activity;
use App\Models\ActivityDay;
use App\Models\Reservation;
use Carbon\Carbon;
use Illuminate\Console\Command;
use Illuminate\Support\Facades\DB;
use Illuminate\Support\Str;

/**
 * 按活动的开始日～结束日，为每一天（活动日）生成若干条测试预约记录。
 * 若某日尚无 activity_days 记录，会自动创建场次并设置足够放票数。
 */
class SeedActivityReservationsByDayCommand extends Command
{
    protected $signature = 'reservations:seed-activity-days
                            {activity_id=1 : 活动 ID}
                            {--per-day=3 : 每个活动日生成几条预约}
                            {--dry-run : 只打印计划，不写入数据库}';

    protected $description = '按活动起止日期，为每个活动日生成测试预约（activity_id + activity_day_id）';

    public function handle(): int
    {
        $activityId = (int) $this->argument('activity_id');
        $perDay = max(1, (int) $this->option('per-day'));
        $dryRun = (bool) $this->option('dry-run');

        $activity = Activity::query()->find($activityId);
        if (!$activity) {
            $this->error("未找到活动 id={$activityId}");

            return self::FAILURE;
        }

        if (!$activity->start_at || !$activity->end_at) {
            $this->error('该活动缺少 start_at / end_at，无法按日期遍历。请先在后台为活动设置开始、结束时间。');

            return self::FAILURE;
        }

        $start = $activity->start_at->copy()->startOfDay();
        $end = $activity->end_at->copy()->startOfDay();

        $this->info("活动 #{$activity->id} {$activity->title}");
        $this->line("场馆 venue_id={$activity->venue_id}");
        $this->line("日期范围：{$start->toDateString()} ～ {$end->toDateString()}（含首尾）");
        $this->line("每日生成预约：{$perDay} 条".($dryRun ? '（dry-run）' : ''));

        $days = [];
        for ($d = $start->copy(); $d->lte($end); $d->addDay()) {
            $days[] = $d->copy();
        }

        $this->table(
            ['序号', '活动日', '将生成条数'],
            collect($days)->map(fn (Carbon $c, $i) => [$i + 1, $c->toDateString(), $perDay])->all()
        );

        if ($dryRun) {
            $this->warn('已跳过写入（--dry-run）。去掉该参数后执行将写入数据库。');

            return self::SUCCESS;
        }

        $created = 0;
        DB::transaction(function () use ($activity, $days, $perDay, &$created) {
            $dayIndex = 0;
            foreach ($days as $day) {
                $dateStr = $day->toDateString();
                $dayIndex++;

                $activityDay = ActivityDay::query()
                    ->where('activity_id', $activity->id)
                    ->whereDate('activity_date', $dateStr)
                    ->first();

                if (!$activityDay) {
                    $opensAt = $day->copy()->subDays(7)->setTime(9, 0, 0);
                    $activityDay = ActivityDay::create([
                        'activity_id' => $activity->id,
                        'activity_date' => $dateStr,
                        'day_quota' => max($perDay * 2, 30),
                        'booked_count' => 0,
                        'opens_at' => $opensAt,
                    ]);
                    $this->line("已创建活动日场次：{$dateStr}，activity_day_id={$activityDay->id}");
                }

                $ticketEach = 1;
                $needBooked = $activityDay->booked_count + ($perDay * $ticketEach);
                if ($activityDay->day_quota < $needBooked) {
                    $activityDay->day_quota = $needBooked + 10;
                    $activityDay->save();
                    $this->line("已调高 {$dateStr} 放票数至 {$activityDay->day_quota}");
                }

                for ($i = 1; $i <= $perDay; $i++) {
                    $phone = $this->makeUniquePhone($activity->id, $dayIndex, $i);
                    $res = Reservation::create([
                        'venue_id' => $activity->venue_id,
                        'activity_id' => $activity->id,
                        'activity_day_id' => $activityDay->id,
                        'visitor_name' => "测试用户{$dateStr}-{$i}",
                        'visitor_phone' => $phone,
                        'qr_token' => (string) Str::uuid(),
                        'status' => 'pending',
                        'ticket_count' => $ticketEach,
                        'reservation_source' => 'legacy',
                    ]);
                    $created++;

                    $activityDay->increment('booked_count', $ticketEach);
                    $this->line("  + 预约 #{$res->id} {$phone} → activity_day {$activityDay->id}");
                }
            }

            Activity::refreshRegisteredCountFromReservations($activity->id);
        });

        $this->info("完成：新建 {$created} 条预约；活动 registered_count 已按已预约人数合计更新。");

        return self::SUCCESS;
    }

    private function makeUniquePhone(int $activityId, int $dayIndex, int $i): string
    {
        // 11 位手机号：138 + 8 位数字，保证脚本内不易重复
        $n = ($activityId * 10000 + $dayIndex * 100 + $i) % 100000000;

        return '138'.str_pad((string) $n, 8, '0', STR_PAD_LEFT);
    }
}