lkddi
384cf8e078
- setup()：验证余额、立即/定时扣款或冻结 - trigger()：获取在线用户、随机红包分配、写入 claims - claim()：领取红包、金币入账（乐观锁防并发重复领） - distributeRedPacket()：二倍均值算法，总和精确等于 total - refundCeremony()：在线为0时退还冻结金币
354 lines
13 KiB
PHP
354 lines
13 KiB
PHP
<?php
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/**
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* 文件功能：婚礼仪式与红包业务服务
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*
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* 处理婚礼设置、金币预扣（冻结）、随机红包分配、触发广播及领取逻辑。
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* 所有金币变更通过 UserCurrencyService 统一记账。
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*
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* @author ChatRoom Laravel
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*
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* @version 1.0.0
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*/
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namespace App\Services;
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use App\Enums\CurrencySource;
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use App\Models\Marriage;
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use App\Models\User;
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use App\Models\WeddingCeremony;
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use App\Models\WeddingEnvelopeClaim;
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use App\Models\WeddingTier;
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use Illuminate\Support\Carbon;
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use Illuminate\Support\Collection;
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use Illuminate\Support\Facades\DB;
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use Illuminate\Support\Facades\Redis;
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class WeddingService
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{
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public function __construct(
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private readonly UserCurrencyService $currency,
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private readonly MarriageConfigService $config,
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) {}
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// ──────────────────────────── 婚礼设置 ────────────────────────────
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/**
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* 设置并创建婚礼（接受求婚后调用）。
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*
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* @param Marriage $marriage 已婚记录
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* @param int|null $tierId 婚礼档位 ID（null=不举办普天同庆）
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* @param string $payerType 'groom'=男方全付 | 'joint'=各半
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* @param string $ceremonyType 'immediate'=立即 | 'scheduled'=定时
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* @param Carbon|null $ceremonyAt 定时婚礼时间
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* @return array{ok: bool, message: string, ceremony_id: int|null}
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*/
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public function setup(
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Marriage $marriage,
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?int $tierId,
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string $payerType = 'groom',
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string $ceremonyType = 'immediate',
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?Carbon $ceremonyAt = null,
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): array {
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// 不举办（仅公告，不发红包）
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if ($tierId === null) {
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return $this->createCeremony($marriage, null, 0, $payerType, $ceremonyType, $ceremonyAt);
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}
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$tier = WeddingTier::find($tierId);
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if (! $tier || ! $tier->is_active) {
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return ['ok' => false, 'message' => '所选婚礼档位不存在或已关闭。', 'ceremony_id' => null];
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}
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// 验证余额
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$groom = $marriage->user;
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$partner = $marriage->partner;
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$total = $tier->amount;
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if ($payerType === 'groom') {
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if (($groom->jjb ?? 0) < $total) {
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return ['ok' => false, 'message' => "金币不足，{$tier->name}需要 {$total} 金币，您当前只有 {$groom->jjb} 金币。", 'ceremony_id' => null];
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}
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} else {
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$half = (int) ceil($total / 2);
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if (($groom->jjb ?? 0) < $half) {
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return ['ok' => false, 'message' => "金币不足，男方需要 {$half} 金币，当前只有 {$groom->jjb} 金币。", 'ceremony_id' => null];
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}
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if (($partner->jjb ?? 0) < $half) {
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return ['ok' => false, 'message' => "金币不足，女方需要 {$half} 金币，当前只有 {$partner->jjb} 金币。", 'ceremony_id' => null];
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}
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}
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return $this->createCeremony($marriage, $tier, $total, $payerType, $ceremonyType, $ceremonyAt);
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}
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/**
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* 创建婚礼记录，并预扣（或冻结）金币。
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*/
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private function createCeremony(
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Marriage $marriage,
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?WeddingTier $tier,
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int $total,
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string $payerType,
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string $ceremonyType,
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?Carbon $ceremonyAt,
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): array {
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return DB::transaction(function () use ($marriage, $tier, $total, $payerType, $ceremonyType, $ceremonyAt) {
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$groom = $marriage->user;
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$partner = $marriage->partner;
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$groomAmount = 0;
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$partnerAmount = 0;
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if ($total > 0) {
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if ($payerType === 'groom') {
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$groomAmount = $total;
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} else {
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$groomAmount = (int) floor($total / 2);
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$partnerAmount = $total - $groomAmount;
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}
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if ($ceremonyType === 'immediate') {
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// 立即扣款
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$this->currency->change($groom, 'gold', -$groomAmount, CurrencySource::WEDDING_ENV_SEND, "婚礼红包发送（{$tier->name}）");
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if ($partnerAmount > 0) {
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$this->currency->change($partner, 'gold', -$partnerAmount, CurrencySource::WEDDING_ENV_SEND, "婚礼红包发送（{$tier->name}）");
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}
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} else {
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// 定时婚礼：冻结金币
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$groom->increment('frozen_jjb', $groomAmount);
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$groom->decrement('jjb', $groomAmount);
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if ($partnerAmount > 0) {
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$partner->increment('frozen_jjb', $partnerAmount);
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$partner->decrement('jjb', $partnerAmount);
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}
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}
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}
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$expireHours = $this->config->get('envelope_expire_hours', 24);
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$at = $ceremonyType === 'immediate' ? now() : ($ceremonyAt ?? now());
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$ceremony = WeddingCeremony::create([
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'marriage_id' => $marriage->id,
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'tier_id' => $tier?->id,
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'total_amount' => $total,
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'payer_type' => $payerType,
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'groom_amount' => $groomAmount,
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'partner_amount' => $partnerAmount,
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'ceremony_type' => $ceremonyType,
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'ceremony_at' => $at,
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'status' => $ceremonyType === 'immediate' ? 'active' : 'pending',
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'expires_at' => $at->copy()->addHours($expireHours),
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]);
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return ['ok' => true, 'message' => '婚礼设置成功！', 'ceremony_id' => $ceremony->id];
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});
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}
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// ──────────────────────────── 触发婚礼 ────────────────────────────
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/**
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* 触发婚礼：获取在线用户 → 分配红包 → 写入 claims 表。
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* 由立即婚礼（setup 后直接调用）或 TriggerScheduledWeddings Job 调用。
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*
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* @param WeddingCeremony $ceremony 婚礼记录
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* @return array{ok: bool, message: string, online_count: int}
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*/
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public function trigger(WeddingCeremony $ceremony): array
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{
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if (! in_array($ceremony->status, ['pending', 'active'])) {
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return ['ok' => false, 'message' => '婚礼状态异常。', 'online_count' => 0];
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}
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// 获取当前在线用户（不含新郎新娘）
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$onlineIds = $this->getOnlineUserIds(excludeIds: [
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$ceremony->marriage->user_id,
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$ceremony->marriage->partner_id,
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]);
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// 在线人数为0时金币退还
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if (count($onlineIds) === 0 && $ceremony->total_amount > 0) {
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$this->refundCeremony($ceremony);
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return ['ok' => false, 'message' => '当前没有在线用户，红包已退还。', 'online_count' => 0];
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}
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// 随机分配红包金额
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$amounts = $ceremony->total_amount > 0
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? $this->distributeRedPacket($ceremony->total_amount, count($onlineIds))
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: array_fill(0, count($onlineIds), 0);
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DB::transaction(function () use ($ceremony, $onlineIds, $amounts) {
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$now = now();
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$claims = [];
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foreach ($onlineIds as $i => $userId) {
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$claims[] = [
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'ceremony_id' => $ceremony->id,
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'user_id' => $userId,
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'amount' => $amounts[$i] ?? 0,
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'claimed' => false,
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'created_at' => $now,
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];
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}
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WeddingEnvelopeClaim::insert($claims);
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$ceremony->update([
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'status' => 'active',
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'online_count' => count($onlineIds),
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'ceremony_at' => now(),
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]);
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});
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return ['ok' => true, 'message' => '婚礼触发成功！', 'online_count' => count($onlineIds)];
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}
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// ──────────────────────────── 领取红包 ────────────────────────────
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/**
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* 用户领取婚礼红包。
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*
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* @param WeddingCeremony $ceremony 婚礼记录
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* @param User $claimer 领取用户
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* @return array{ok: bool, message: string, amount: int}
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*/
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public function claim(WeddingCeremony $ceremony, User $claimer): array
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{
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$claim = WeddingEnvelopeClaim::query()
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->where('ceremony_id', $ceremony->id)
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->where('user_id', $claimer->id)
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->where('claimed', false)
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->lockForUpdate()
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->first();
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if (! $claim) {
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return ['ok' => false, 'message' => '没有待领取的红包，或红包已被领取。', 'amount' => 0];
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}
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if ($ceremony->expires_at && $ceremony->expires_at->isPast()) {
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return ['ok' => false, 'message' => '红包已过期。', 'amount' => 0];
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}
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DB::transaction(function () use ($claim, $ceremony, $claimer) {
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$claim->update(['claimed' => true, 'claimed_at' => now()]);
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$ceremony->increment('claimed_count');
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$ceremony->increment('claimed_amount', $claim->amount);
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// 金币入账
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if ($claim->amount > 0) {
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$marriage = $ceremony->marriage;
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$remark = "婚礼红包：{$marriage->user->username} × {$marriage->partner->username}";
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$this->currency->change($claimer, 'gold', $claim->amount, CurrencySource::WEDDING_ENV_RECV, $remark);
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}
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});
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return ['ok' => true, 'message' => "已领取 {$claim->amount} 金币！", 'amount' => $claim->amount];
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}
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// ──────────────────────────── 随机红包算法 ─────────────────────────
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/**
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* 随机红包分配（二倍均值算法）。
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* 保证每人至少 1 金币，总和精确等于 totalAmount。
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*
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* @param int $totalAmount 总金额
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* @param int $count 人数
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* @return array<int> 每人分配金额
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*/
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private function distributeRedPacket(int $totalAmount, int $count): array
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{
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if ($count <= 0 || $totalAmount <= 0) {
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return [];
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}
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// 人数多于金额时，部分人分到0
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if ($totalAmount < $count) {
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$amounts = array_fill(0, $count, 0);
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for ($i = 0; $i < $totalAmount; $i++) {
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$amounts[$i] = 1;
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}
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shuffle($amounts);
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return $amounts;
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}
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$amounts = [];
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$remaining = $totalAmount;
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for ($i = 0; $i < $count - 1; $i++) {
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$remainingPeople = $count - $i;
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$avgDouble = (int) floor($remaining * 2 / $remainingPeople);
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$max = max(1, min($avgDouble - 1, $remaining - ($remainingPeople - 1)));
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$amounts[] = random_int(1, $max);
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$remaining -= end($amounts);
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}
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$amounts[] = $remaining; // 最后一人拿剩余
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shuffle($amounts); // 随机打乱
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return $amounts;
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}
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/**
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* 退还定时婚礼金币（在线人数为0时）。
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*/
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private function refundCeremony(WeddingCeremony $ceremony): void
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{
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$ceremony->update(['status' => 'cancelled']);
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// 解冻退还（定时婚礼金币已被冻结在 frozen_jjb）
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if ($ceremony->ceremony_type === 'scheduled') {
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$marriage = $ceremony->marriage;
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if ($ceremony->groom_amount > 0) {
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$marriage->user?->decrement('frozen_jjb', $ceremony->groom_amount);
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$marriage->user?->increment('jjb', $ceremony->groom_amount);
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}
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if ($ceremony->partner_amount > 0) {
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$marriage->partner?->decrement('frozen_jjb', $ceremony->partner_amount);
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$marriage->partner?->increment('jjb', $ceremony->partner_amount);
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}
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}
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}
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/**
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* 获取当前在线用户 ID 列表（从 Redis chatroom_users）。
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*
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* @param array<int> $excludeIds 排除的用户 ID
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* @return array<int>
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*/
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private function getOnlineUserIds(array $excludeIds = []): array
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{
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// chatroom_users 是 Hash，key=username，value=user_id（或 JSON）
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// 实际取法根据现有 Redis 结构调整
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try {
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$raw = Redis::smembers('chatroom_online_ids');
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$ids = array_map('intval', $raw);
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return array_values(array_diff($ids, $excludeIds));
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} catch (\Throwable) {
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return [];
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}
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}
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/**
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* 获取用户在指定婚礼中的待领取红包信息。
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*/
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public function getUnclaimedEnvelope(WeddingCeremony $ceremony, int $userId): ?WeddingEnvelopeClaim
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{
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return WeddingEnvelopeClaim::query()
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->where('ceremony_id', $ceremony->id)
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->where('user_id', $userId)
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->where('claimed', false)
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->first();
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}
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/**
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* 返回所有激活档位（前台选择用）。
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*
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* @return Collection<int, WeddingTier>
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*/
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public function activeTiers(): Collection
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{
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return WeddingTier::query()->where('is_active', true)->orderBy('tier')->get();
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}
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}
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