chatroom/app/Services/FishingService.php

<?php

/**
 * 文件功能：钓鱼核心业务逻辑
 *
 * 提取自 FishingController，供玩家请求和 AI 挂机脚本复用。
 *
 * 修改说明：
 * - 保留 fishing_events.message 原始文案
 * - 如果会员有加成，则在原文案后追加：
 *   （会员加成：+经验X，+金币Y）
 *
 * @author   ChatRoom Laravel
 * @version  1.2.0
 */

namespace App\Services;

use App\Enums\CurrencySource;
use App\Events\MessageSent;
use App\Models\FishingEvent;
use App\Models\User;

class FishingService
{
    public function __construct(
        private readonly ChatStateService    $chatState,
        private readonly VipService          $vipService,
        private readonly UserCurrencyService $currencyService,
        private readonly ShopService         $shopService,
    )
    {
    }

    /**
     * 处理收竿逻辑：计算结果、发放积分并全服广播。
     *
     * @param User $user 收竿的用户实体
     * @param int $roomId 所在房间 ID
     * @param bool $isAi 是否为 AI 调用（用于影响文案或标签）
     */
    public function processCatch(User $user, int $roomId, bool $isAi = false): array
    {
        // 1. 随机决定钓鱼结果
        $result = $this->randomFishResult();

        // 2. 获取会员倍率
        $expMul = $this->vipService->getExpMultiplier($user);
        $jjbMul = $this->vipService->getJjbMultiplier($user);

        // 3. 计算最终经验和金币
        $finalExp = 0;
        $finalJjb = 0;

        if ($result['exp'] !== 0) {
            // 当经验为 正数 则可使用会员翻倍，负数则不
            $finalExp = $result['exp'] > 0 ? (int)round($result['exp'] * $expMul) : $result['exp'];
        }

        if ($result['jjb'] !== 0) {
            $finalJjb = $result['jjb'] > 0 ? (int)round($result['jjb'] * $jjbMul) : $result['jjb'];
        }

        // 4. 计算会员额外加成部分
        $bonusExp = 0;
        $bonusJjb = 0;

        if ($result['exp'] > 0 && $finalExp > $result['exp']) {
            $bonusExp = $finalExp - $result['exp'];
        }

        if ($result['jjb'] > 0 && $finalJjb > $result['jjb']) {
            $bonusJjb = $finalJjb - $result['jjb'];
        }

        // 5. 生成最终展示文案
        $finalMessage = $this->buildFinalMessage($result['message'], $bonusExp, $bonusJjb, $user);

        // 6. 更新经验
        if ($finalExp !== 0) {
            $this->currencyService->change($user, 'exp', $finalExp, CurrencySource::FISHING_GAIN, "钓鱼收竿：{$finalMessage}", $roomId,
            );
        }

        // 7. 更新金币
        if ($finalJjb !== 0) {
            $this->currencyService->change($user, 'gold', $finalJjb, CurrencySource::FISHING_GAIN, "钓鱼收竿：{$finalMessage}", $roomId,
            );
        }

        $user->refresh();

        // 8. 广播钓鱼结果到聊天室
        $promoTag = '';
        if (!$isAi) {
            $autoFishingMinutesLeft = $this->shopService->getActiveAutoFishingMinutesLeft($user);
            $promoTag = $autoFishingMinutesLeft > 0
                ? ' <span onclick="window.openShopModal&&window.openShopModal()" '
                . 'style="display:inline-block;margin-left:6px;padding:1px 7px;background:#e9e4f5;'
                . 'color:#6d4fa8;border-radius:10px;font-size:10px;cursor:pointer;font-weight:bold;vertical-align:middle;'
                . 'border:1px solid #d0c4ec;" title="点击购买自动钓鱼卡">🎣 自动钓鱼卡</span>'
                : '';
        }

        $sysMsg = [
            'id' => $this->chatState->nextMessageId($roomId),
            'room_id' => $roomId,
            'from_user' => '钓鱼播报',
            'to_user' => '大家',
            'content' => "{$result['emoji']} 【{$user->username}】{$finalMessage}{$promoTag}",
            'is_secret' => false,
            'font_color' => ($result['exp'] < 0 || $result['jjb'] < 0) ? '#dc2626' : '#16a34a',
            'action' => '',
            'sent_at' => now()->toDateTimeString(),
        ];

        $this->chatState->pushMessage($roomId, $sysMsg);
        broadcast(new MessageSent($roomId, $sysMsg));
        // 发送完需持久化，不过 controller 里并未直接看到 SaveMessageJob, 但 AIheartbeat 里有。
        // 这里就先维持原样，只 broadcast 和 pushMessage

        return [
            'emoji' => $result['emoji'],
            'message' => $finalMessage,
            'exp' => $finalExp,
            'jjb' => $finalJjb,
            'base_exp' => $result['exp'],
            'base_jjb' => $result['jjb'],
            'bonus_exp' => $bonusExp,
            'bonus_jjb' => $bonusJjb,
        ];
    }

    /**
     * 生成最终展示文案
     *
     * 示例：
     * - 钓到一条金鱼，获得经验10，金币20
     * - 钓到一条金鱼，获得经验10，金币20（会员加成：+经验10，+金币20）
     */
    private function buildFinalMessage(string $baseMessage, int $bonusExp, int $bonusJjb, $user): string
    {
        $bonusParts = [];

        if ($bonusExp > 0) {
            $bonusParts[] = "+经验{$bonusExp}";
        }

        if ($bonusJjb > 0) {
            $bonusParts[] = "+金币{$bonusJjb}";
        }

        if (empty($bonusParts)) {
            return $baseMessage;
        }

        return $baseMessage . '（' . $user->vipName() . '追加：' . implode('，', $bonusParts) . '）';
    }

    /**
     * 随机钓鱼结果（从数据库 fishing_events 加权随机抽取）
     *
     * 若数据库中无激活事件，回退到兜底结果。
     *
     * @return array{emoji: string, message: string, exp: int, jjb: int}
     */
    public function randomFishResult(): array
    {
        $event = FishingEvent::rollOne();

        if (!$event) {
            return [
                'emoji' => '🐟',
                'message' => '钓到一条小鱼，获得金币10',
                'exp' => 0,
                'jjb' => 10,
            ];
        }

        return [
            'emoji' => $event->emoji,
            'message' => $event->message,
            'exp' => (int)$event->exp,
            'jjb' => (int)$event->jjb,
        ];
    }
}