139 lines
4.3 KiB
PHP
139 lines
4.3 KiB
PHP
<?php
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declare(strict_types=1);
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namespace app\api\service;
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use app\dice\model\lottery_config\DiceLotteryConfig;
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use app\dice\model\player\DicePlayer;
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use support\think\Cache;
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/**
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* 彩金池实例，按玩家权重与奖池配置创建，存 Redis 便于增删改查
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*/
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class LotteryService
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{
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private const REDIS_KEY_PREFIX = 'api:game:lottery_pool:';
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private const REDIS_KEY_START_INDEX = 'api:game:start_index:';
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private const EXPIRE = 86400 * 7; // 7天
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private int $playerId;
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private ?int $configType0Id = null;
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private ?int $configType1Id = null;
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/** @var array{t1_wight?:int,t2_wight?:int,t3_wight?:int,t4_wight?:int,t5_wight?:int} */
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private array $playerWeights = [];
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public function __construct(int $playerId)
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{
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$this->playerId = $playerId;
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}
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public static function getRedisKey(int $playerId): string
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{
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return self::REDIS_KEY_PREFIX . $playerId;
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}
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public static function getStartIndexKey(int $playerId): string
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{
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return self::REDIS_KEY_START_INDEX . $playerId;
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}
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/** 从 Redis 加载或根据玩家与 DiceLotteryConfig 创建并保存 */
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public static function getOrCreate(int $playerId): self
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{
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$key = self::getRedisKey($playerId);
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$cached = Cache::get($key);
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if ($cached && is_string($cached)) {
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$data = json_decode($cached, true);
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if (is_array($data)) {
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$s = new self($playerId);
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$s->configType0Id = (int) ($data['config_type_0_id'] ?? 0);
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$s->configType1Id = (int) ($data['config_type_1_id'] ?? 0);
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$s->playerWeights = $data['player_weights'] ?? [];
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return $s;
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}
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}
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$player = DicePlayer::find($playerId);
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if (!$player) {
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throw new \RuntimeException('玩家不存在');
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}
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$config0 = DiceLotteryConfig::where('type', 0)->find();
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$config1 = DiceLotteryConfig::where('type', 1)->find();
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$s = new self($playerId);
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$s->configType0Id = $config0 ? (int) $config0->id : null;
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$s->configType1Id = $config1 ? (int) $config1->id : null;
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$s->playerWeights = [
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't1_wight' => (int) ($player->t1_wight ?? 0),
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't2_wight' => (int) ($player->t2_wight ?? 0),
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't3_wight' => (int) ($player->t3_wight ?? 0),
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't4_wight' => (int) ($player->t4_wight ?? 0),
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't5_wight' => (int) ($player->t5_wight ?? 0),
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];
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$s->save();
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return $s;
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}
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public function save(): void
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{
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$key = self::getRedisKey($this->playerId);
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$data = [
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'config_type_0_id' => $this->configType0Id,
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'config_type_1_id' => $this->configType1Id,
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'player_weights' => $this->playerWeights,
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];
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Cache::set($key, json_encode($data), self::EXPIRE);
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}
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/** 根据奖池配置的 t1_wight..t5_wight 权重随机抽取档位 T1-T5 */
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public static function drawTierByWeights(DiceLotteryConfig $config): string
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{
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$tiers = ['T1', 'T2', 'T3', 'T4', 'T5'];
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$weights = [
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(int) ($config->t1_wight ?? 0),
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(int) ($config->t2_wight ?? 0),
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(int) ($config->t3_wight ?? 0),
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(int) ($config->t4_wight ?? 0),
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(int) ($config->t5_wight ?? 0),
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];
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$total = array_sum($weights);
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if ($total <= 0) {
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return $tiers[array_rand($tiers)];
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}
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$r = mt_rand(1, $total);
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$acc = 0;
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foreach ($weights as $i => $w) {
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$acc += $w;
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if ($r <= $acc) {
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return $tiers[$i];
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}
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}
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return $tiers[4];
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}
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/** 按 paid_draw_count 与 free_draw_count 权重随机抽取 0=付费 1=免费 */
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public static function drawTicketType(int $paid, int $free): int
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{
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if ($paid <= 0 && $free <= 0) {
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throw new \RuntimeException('抽奖券不足');
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}
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if ($paid <= 0) {
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return 1;
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}
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if ($free <= 0) {
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return 0;
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}
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$total = $paid + $free;
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$r = mt_rand(1, $total);
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return $r <= $paid ? 0 : 1;
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}
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public function getConfigType0Id(): ?int
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{
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return $this->configType0Id;
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}
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public function getConfigType1Id(): ?int
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{
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return $this->configType1Id;
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}
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}
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