<?php

/**
 * 文件功能：每日游戏净盈利前三榜读服务
 *
 * 聚合百家乐与赛马当天金币流水，给聊天室顶部悬浮榜提供轻量数据。
 *
 * @author ChatRoom Laravel
 *
 * @version 1.0.0
 */

namespace App\Services;

use App\Enums\CurrencySource;
use App\Models\UserCurrencyLog;
use Carbon\CarbonImmutable;
use Illuminate\Support\Collection;
use Illuminate\Support\Facades\Cache;

/**
 * 类功能：查询百家乐与赛马每日净盈利前三用户。
 */
class DailyGameProfitLeaderboardService
{
    /**
     * 每日榜单固定称号。
     */
    private const TITLES = [
        1 => '金库爆破王',
        2 => '马桌双修财神',
        3 => '金币收割机',
    ];

    /**
     * 参与净盈利统计的游戏流水来源。
     */
    private const GAME_PROFIT_SOURCES = [
        CurrencySource::BACCARAT_BET,
        CurrencySource::BACCARAT_WIN,
        CurrencySource::HORSE_BET,
        CurrencySource::HORSE_WIN,
    ];

    /**
     * 获取指定日期的游戏净盈利前三榜。
     *
     * @return Collection<int, object{rank:int,title:string,user_id:int,username:string,headface_url:string,net_profit:int}>
     */
    public function topThree(?string $date = null): Collection
    {
        $statsDate = CarbonImmutable::parse($date ?? today()->toDateString())->startOfDay();
        $cacheKey = 'daily_game_profit_leaderboard:v2:'.$statsDate->toDateString();

        return Cache::remember($cacheKey, 300, function () use ($statsDate) {
            $rangeStart = $statsDate;
            $rangeEnd = $statsDate->addDay();

            return UserCurrencyLog::query()
                ->join('users', 'users.id', '=', 'user_currency_logs.user_id')
                ->where('user_currency_logs.currency', 'gold')
                ->whereIn('user_currency_logs.source', array_map(
                    fn (CurrencySource $source): string => $source->value,
                    self::GAME_PROFIT_SOURCES
                ))
                ->where('user_currency_logs.created_at', '>=', $rangeStart)
                ->where('user_currency_logs.created_at', '<', $rangeEnd)
                ->where('users.username', '!=', 'AI小班长')
                ->groupBy('user_currency_logs.user_id', 'users.username', 'users.usersf')
                ->havingRaw('SUM(user_currency_logs.amount) > 0')
                ->orderByRaw('SUM(user_currency_logs.amount) DESC')
                ->orderBy('user_currency_logs.user_id')
                ->limit(3)
                ->selectRaw('user_currency_logs.user_id, users.username, users.usersf, SUM(user_currency_logs.amount) as net_profit')
                ->get()
                ->values()
                ->map(function (object $row, int $index): object {
                    $rank = $index + 1;

                    return (object) [
                        'rank' => $rank,
                        'title' => self::TITLES[$rank],
                        'user_id' => (int) $row->user_id,
                        'username' => (string) $row->username,
                        'headface_url' => $this->resolveHeadfaceUrl((string) ($row->usersf ?: '1.gif')),
                        'net_profit' => (int) $row->net_profit,
                    ];
                });
        });
    }

    /**
     * 解析榜单头像地址。
     */
    private function resolveHeadfaceUrl(string $headface): string
    {
        if (str_starts_with($headface, 'storage/')) {
            return '/'.$headface;
        }

        return '/images/headface/'.strtolower($headface);
    }
}