SET NAMES utf8mb4 COLLATE utf8mb4_unicode_ci;

USE hyapp_lucky_gift;

-- 每列独立探测，兼容“曾运行旧 002、未运行旧 002、004 执行到一半”三种线上状态；
-- strategy_version 的默认值固定为 fixed_v2，确保已有不可变版本不会被动态规则重新解释。
SET @ddl := IF((SELECT COUNT(*) FROM information_schema.COLUMNS WHERE TABLE_SCHEMA = DATABASE() AND TABLE_NAME = 'lucky_gift_rule_versions' AND COLUMN_NAME = 'strategy_version') = 0,
  'ALTER TABLE lucky_gift_rule_versions ADD COLUMN strategy_version VARCHAR(32) NOT NULL DEFAULT ''fixed_v2'' COMMENT ''fixed_v2/dynamic_v3；旧版本固定按 fixed_v2 解释'' AFTER enabled', 'SELECT 1');
PREPARE stmt FROM @ddl; EXECUTE stmt; DEALLOCATE PREPARE stmt;

SET @ddl := IF((SELECT COUNT(*) FROM information_schema.COLUMNS WHERE TABLE_SCHEMA = DATABASE() AND TABLE_NAME = 'lucky_gift_rule_versions' AND COLUMN_NAME = 'profit_rate_ppm') = 0,
  'ALTER TABLE lucky_gift_rule_versions ADD COLUMN profit_rate_ppm BIGINT NOT NULL DEFAULT 0 COMMENT ''平台盈利比例，ppm'' AFTER pool_rate_ppm', 'SELECT 1');
PREPARE stmt FROM @ddl; EXECUTE stmt; DEALLOCATE PREPARE stmt;

SET @ddl := IF((SELECT COUNT(*) FROM information_schema.COLUMNS WHERE TABLE_SCHEMA = DATABASE() AND TABLE_NAME = 'lucky_gift_rule_versions' AND COLUMN_NAME = 'anchor_rate_ppm') = 0,
  'ALTER TABLE lucky_gift_rule_versions ADD COLUMN anchor_rate_ppm BIGINT NOT NULL DEFAULT 0 COMMENT ''主播收益比例，ppm'' AFTER profit_rate_ppm', 'SELECT 1');
PREPARE stmt FROM @ddl; EXECUTE stmt; DEALLOCATE PREPARE stmt;

SET @ddl := IF((SELECT COUNT(*) FROM information_schema.COLUMNS WHERE TABLE_SCHEMA = DATABASE() AND TABLE_NAME = 'lucky_gift_rule_versions' AND COLUMN_NAME = 'initial_pool_coins') = 0,
  'ALTER TABLE lucky_gift_rule_versions ADD COLUMN initial_pool_coins BIGINT NOT NULL DEFAULT 0 COMMENT ''dynamic_v3 初始注资金币'' AFTER created_at_ms', 'SELECT 1');
PREPARE stmt FROM @ddl; EXECUTE stmt; DEALLOCATE PREPARE stmt;

SET @ddl := IF((SELECT COUNT(*) FROM information_schema.COLUMNS WHERE TABLE_SCHEMA = DATABASE() AND TABLE_NAME = 'lucky_gift_rule_versions' AND COLUMN_NAME = 'loss_streak_guarantee') = 0,
  'ALTER TABLE lucky_gift_rule_versions ADD COLUMN loss_streak_guarantee BIGINT NOT NULL DEFAULT 0 COMMENT ''连续未中奖保底抽数'' AFTER initial_pool_coins', 'SELECT 1');
PREPARE stmt FROM @ddl; EXECUTE stmt; DEALLOCATE PREPARE stmt;

SET @ddl := IF((SELECT COUNT(*) FROM information_schema.COLUMNS WHERE TABLE_SCHEMA = DATABASE() AND TABLE_NAME = 'lucky_gift_rule_versions' AND COLUMN_NAME = 'low_watermark_coins') = 0,
  'ALTER TABLE lucky_gift_rule_versions ADD COLUMN low_watermark_coins BIGINT NOT NULL DEFAULT 0 COMMENT ''低水位阈值金币'' AFTER loss_streak_guarantee', 'SELECT 1');
PREPARE stmt FROM @ddl; EXECUTE stmt; DEALLOCATE PREPARE stmt;

SET @ddl := IF((SELECT COUNT(*) FROM information_schema.COLUMNS WHERE TABLE_SCHEMA = DATABASE() AND TABLE_NAME = 'lucky_gift_rule_versions' AND COLUMN_NAME = 'low_water_nonzero_factor_ppm') = 0,
  'ALTER TABLE lucky_gift_rule_versions ADD COLUMN low_water_nonzero_factor_ppm BIGINT NOT NULL DEFAULT 0 COMMENT ''低水位非零概率因子，ppm'' AFTER low_watermark_coins', 'SELECT 1');
PREPARE stmt FROM @ddl; EXECUTE stmt; DEALLOCATE PREPARE stmt;

SET @ddl := IF((SELECT COUNT(*) FROM information_schema.COLUMNS WHERE TABLE_SCHEMA = DATABASE() AND TABLE_NAME = 'lucky_gift_rule_versions' AND COLUMN_NAME = 'high_watermark_coins') = 0,
  'ALTER TABLE lucky_gift_rule_versions ADD COLUMN high_watermark_coins BIGINT NOT NULL DEFAULT 0 COMMENT ''高水位阈值金币'' AFTER low_water_nonzero_factor_ppm', 'SELECT 1');
PREPARE stmt FROM @ddl; EXECUTE stmt; DEALLOCATE PREPARE stmt;

SET @ddl := IF((SELECT COUNT(*) FROM information_schema.COLUMNS WHERE TABLE_SCHEMA = DATABASE() AND TABLE_NAME = 'lucky_gift_rule_versions' AND COLUMN_NAME = 'high_water_nonzero_factor_ppm') = 0,
  'ALTER TABLE lucky_gift_rule_versions ADD COLUMN high_water_nonzero_factor_ppm BIGINT NOT NULL DEFAULT 0 COMMENT ''高水位非零概率因子，ppm'' AFTER high_watermark_coins', 'SELECT 1');
PREPARE stmt FROM @ddl; EXECUTE stmt; DEALLOCATE PREPARE stmt;

SET @ddl := IF((SELECT COUNT(*) FROM information_schema.COLUMNS WHERE TABLE_SCHEMA = DATABASE() AND TABLE_NAME = 'lucky_gift_rule_versions' AND COLUMN_NAME = 'recharge_boost_window_ms') = 0,
  'ALTER TABLE lucky_gift_rule_versions ADD COLUMN recharge_boost_window_ms BIGINT NOT NULL DEFAULT 0 COMMENT ''充值加权窗口毫秒'' AFTER high_water_nonzero_factor_ppm', 'SELECT 1');
PREPARE stmt FROM @ddl; EXECUTE stmt; DEALLOCATE PREPARE stmt;

SET @ddl := IF((SELECT COUNT(*) FROM information_schema.COLUMNS WHERE TABLE_SCHEMA = DATABASE() AND TABLE_NAME = 'lucky_gift_rule_versions' AND COLUMN_NAME = 'recharge_boost_factor_ppm') = 0,
  'ALTER TABLE lucky_gift_rule_versions ADD COLUMN recharge_boost_factor_ppm BIGINT NOT NULL DEFAULT 0 COMMENT ''充值加权因子，ppm'' AFTER recharge_boost_window_ms', 'SELECT 1');
PREPARE stmt FROM @ddl; EXECUTE stmt; DEALLOCATE PREPARE stmt;

SET @ddl := IF((SELECT COUNT(*) FROM information_schema.COLUMNS WHERE TABLE_SCHEMA = DATABASE() AND TABLE_NAME = 'lucky_gift_rule_versions' AND COLUMN_NAME = 'jackpot_multiplier_ppms') = 0,
  'ALTER TABLE lucky_gift_rule_versions ADD COLUMN jackpot_multiplier_ppms JSON NOT NULL DEFAULT (JSON_ARRAY()) COMMENT ''动态大奖倍率列表'' AFTER recharge_boost_factor_ppm', 'SELECT 1');
PREPARE stmt FROM @ddl; EXECUTE stmt; DEALLOCATE PREPARE stmt;

SET @ddl := IF((SELECT COUNT(*) FROM information_schema.COLUMNS WHERE TABLE_SCHEMA = DATABASE() AND TABLE_NAME = 'lucky_gift_rule_versions' AND COLUMN_NAME = 'jackpot_global_rtp_max_ppm') = 0,
  'ALTER TABLE lucky_gift_rule_versions ADD COLUMN jackpot_global_rtp_max_ppm BIGINT NOT NULL DEFAULT 0 COMMENT ''全局大奖 RTP 上限'' AFTER jackpot_multiplier_ppms', 'SELECT 1');
PREPARE stmt FROM @ddl; EXECUTE stmt; DEALLOCATE PREPARE stmt;

SET @ddl := IF((SELECT COUNT(*) FROM information_schema.COLUMNS WHERE TABLE_SCHEMA = DATABASE() AND TABLE_NAME = 'lucky_gift_rule_versions' AND COLUMN_NAME = 'jackpot_user_day_rtp_max_ppm') = 0,
  'ALTER TABLE lucky_gift_rule_versions ADD COLUMN jackpot_user_day_rtp_max_ppm BIGINT NOT NULL DEFAULT 0 COMMENT ''用户当日大奖 RTP 上限'' AFTER jackpot_global_rtp_max_ppm', 'SELECT 1');
PREPARE stmt FROM @ddl; EXECUTE stmt; DEALLOCATE PREPARE stmt;

SET @ddl := IF((SELECT COUNT(*) FROM information_schema.COLUMNS WHERE TABLE_SCHEMA = DATABASE() AND TABLE_NAME = 'lucky_gift_rule_versions' AND COLUMN_NAME = 'jackpot_user_72h_rtp_max_ppm') = 0,
  'ALTER TABLE lucky_gift_rule_versions ADD COLUMN jackpot_user_72h_rtp_max_ppm BIGINT NOT NULL DEFAULT 0 COMMENT ''用户滚动72小时大奖 RTP 上限'' AFTER jackpot_user_day_rtp_max_ppm', 'SELECT 1');
PREPARE stmt FROM @ddl; EXECUTE stmt; DEALLOCATE PREPARE stmt;

SET @ddl := IF((SELECT COUNT(*) FROM information_schema.COLUMNS WHERE TABLE_SCHEMA = DATABASE() AND TABLE_NAME = 'lucky_gift_rule_versions' AND COLUMN_NAME = 'jackpot_spend_threshold_coins') = 0,
  'ALTER TABLE lucky_gift_rule_versions ADD COLUMN jackpot_spend_threshold_coins BIGINT NOT NULL DEFAULT 0 COMMENT ''规则版本动态配置的用户 UTC 日累计消费大奖门槛金币'' AFTER jackpot_user_72h_rtp_max_ppm', 'SELECT 1');
PREPARE stmt FROM @ddl; EXECUTE stmt; DEALLOCATE PREPARE stmt;

SET @ddl := IF((SELECT COUNT(*) FROM information_schema.COLUMNS WHERE TABLE_SCHEMA = DATABASE() AND TABLE_NAME = 'lucky_gift_rule_versions' AND COLUMN_NAME = 'max_jackpot_hits_per_user_day') = 0,
  'ALTER TABLE lucky_gift_rule_versions ADD COLUMN max_jackpot_hits_per_user_day BIGINT NOT NULL DEFAULT 0 COMMENT ''用户UTC日大奖命中上限'' AFTER jackpot_spend_threshold_coins', 'SELECT 1');
PREPARE stmt FROM @ddl; EXECUTE stmt; DEALLOCATE PREPARE stmt;

SET @ddl := IF((SELECT COUNT(*) FROM information_schema.COLUMNS WHERE TABLE_SCHEMA = DATABASE() AND TABLE_NAME = 'lucky_gift_rule_versions' AND COLUMN_NAME = 'max_single_payout') = 0,
  'ALTER TABLE lucky_gift_rule_versions ADD COLUMN max_single_payout BIGINT NOT NULL DEFAULT 0 COMMENT ''单次返奖上限'' AFTER max_jackpot_hits_per_user_day', 'SELECT 1');
PREPARE stmt FROM @ddl; EXECUTE stmt; DEALLOCATE PREPARE stmt;

SET @ddl := IF((SELECT COUNT(*) FROM information_schema.COLUMNS WHERE TABLE_SCHEMA = DATABASE() AND TABLE_NAME = 'lucky_gift_rule_versions' AND COLUMN_NAME = 'user_hourly_payout_cap') = 0,
  'ALTER TABLE lucky_gift_rule_versions ADD COLUMN user_hourly_payout_cap BIGINT NOT NULL DEFAULT 0 COMMENT ''用户UTC小时返奖上限'' AFTER max_single_payout', 'SELECT 1');
PREPARE stmt FROM @ddl; EXECUTE stmt; DEALLOCATE PREPARE stmt;

SET @ddl := IF((SELECT COUNT(*) FROM information_schema.COLUMNS WHERE TABLE_SCHEMA = DATABASE() AND TABLE_NAME = 'lucky_gift_rule_versions' AND COLUMN_NAME = 'user_daily_payout_cap') = 0,
  'ALTER TABLE lucky_gift_rule_versions ADD COLUMN user_daily_payout_cap BIGINT NOT NULL DEFAULT 0 COMMENT ''用户UTC日返奖上限'' AFTER user_hourly_payout_cap', 'SELECT 1');
PREPARE stmt FROM @ddl; EXECUTE stmt; DEALLOCATE PREPARE stmt;

SET @ddl := IF((SELECT COUNT(*) FROM information_schema.COLUMNS WHERE TABLE_SCHEMA = DATABASE() AND TABLE_NAME = 'lucky_gift_rule_versions' AND COLUMN_NAME = 'device_daily_payout_cap') = 0,
  'ALTER TABLE lucky_gift_rule_versions ADD COLUMN device_daily_payout_cap BIGINT NOT NULL DEFAULT 0 COMMENT ''设备UTC日返奖上限'' AFTER user_daily_payout_cap', 'SELECT 1');
PREPARE stmt FROM @ddl; EXECUTE stmt; DEALLOCATE PREPARE stmt;

SET @ddl := IF((SELECT COUNT(*) FROM information_schema.COLUMNS WHERE TABLE_SCHEMA = DATABASE() AND TABLE_NAME = 'lucky_gift_rule_versions' AND COLUMN_NAME = 'room_hourly_payout_cap') = 0,
  'ALTER TABLE lucky_gift_rule_versions ADD COLUMN room_hourly_payout_cap BIGINT NOT NULL DEFAULT 0 COMMENT ''房间UTC小时返奖上限'' AFTER device_daily_payout_cap', 'SELECT 1');
PREPARE stmt FROM @ddl; EXECUTE stmt; DEALLOCATE PREPARE stmt;

SET @ddl := IF((SELECT COUNT(*) FROM information_schema.COLUMNS WHERE TABLE_SCHEMA = DATABASE() AND TABLE_NAME = 'lucky_gift_rule_versions' AND COLUMN_NAME = 'anchor_daily_payout_cap') = 0,
  'ALTER TABLE lucky_gift_rule_versions ADD COLUMN anchor_daily_payout_cap BIGINT NOT NULL DEFAULT 0 COMMENT ''主播UTC日返奖上限'' AFTER room_hourly_payout_cap', 'SELECT 1');
PREPARE stmt FROM @ddl; EXECUTE stmt; DEALLOCATE PREPARE stmt;

SET @ddl := IF((SELECT COUNT(*) FROM information_schema.COLUMNS WHERE TABLE_SCHEMA = DATABASE() AND TABLE_NAME = 'lucky_gift_stage_tiers' AND COLUMN_NAME = 'min_recharge_7d_coins') = 0,
  'ALTER TABLE lucky_gift_stage_tiers ADD COLUMN min_recharge_7d_coins BIGINT NOT NULL DEFAULT 0 COMMENT ''normal/advanced 最近7日充值下限；novice 的0仅为sentinel'' AFTER stage', 'SELECT 1');
PREPARE stmt FROM @ddl; EXECUTE stmt; DEALLOCATE PREPARE stmt;

SET @ddl := IF((SELECT COUNT(*) FROM information_schema.COLUMNS WHERE TABLE_SCHEMA = DATABASE() AND TABLE_NAME = 'lucky_gift_stage_tiers' AND COLUMN_NAME = 'min_recharge_30d_coins') = 0,
  'ALTER TABLE lucky_gift_stage_tiers ADD COLUMN min_recharge_30d_coins BIGINT NOT NULL DEFAULT 0 COMMENT ''normal/advanced 最近30日充值下限；novice 的0仅为sentinel'' AFTER min_recharge_7d_coins', 'SELECT 1');
PREPARE stmt FROM @ddl; EXECUTE stmt; DEALLOCATE PREPARE stmt;

SET @ddl := IF((SELECT COUNT(*) FROM information_schema.COLUMNS WHERE TABLE_SCHEMA = DATABASE() AND TABLE_NAME = 'lucky_pools' AND COLUMN_NAME = 'profit_total') = 0,
  'ALTER TABLE lucky_pools ADD COLUMN profit_total BIGINT NOT NULL DEFAULT 0 COMMENT ''累计平台盈利拆账金币'' AFTER total_out', 'SELECT 1');
PREPARE stmt FROM @ddl; EXECUTE stmt; DEALLOCATE PREPARE stmt;

SET @ddl := IF((SELECT COUNT(*) FROM information_schema.COLUMNS WHERE TABLE_SCHEMA = DATABASE() AND TABLE_NAME = 'lucky_pools' AND COLUMN_NAME = 'anchor_income_total') = 0,
  'ALTER TABLE lucky_pools ADD COLUMN anchor_income_total BIGINT NOT NULL DEFAULT 0 COMMENT ''累计主播收益拆账金币'' AFTER profit_total', 'SELECT 1');
PREPARE stmt FROM @ddl; EXECUTE stmt; DEALLOCATE PREPARE stmt;

SET @ddl := IF((SELECT COUNT(*) FROM information_schema.COLUMNS WHERE TABLE_SCHEMA = DATABASE() AND TABLE_NAME = 'lucky_pools' AND COLUMN_NAME = 'initial_seed_total') = 0,
  'ALTER TABLE lucky_pools ADD COLUMN initial_seed_total BIGINT NOT NULL DEFAULT 0 COMMENT ''累计初始注资金币'' AFTER anchor_income_total', 'SELECT 1');
PREPARE stmt FROM @ddl; EXECUTE stmt; DEALLOCATE PREPARE stmt;

-- 消费门槛按 UTC 日累计，但已经赚到的机会在池不足时必须跨日保留；因此 token 属于用户/奖池状态，不能放在日表。
SET @ddl := IF((SELECT COUNT(*) FROM information_schema.COLUMNS WHERE TABLE_SCHEMA = DATABASE() AND TABLE_NAME = 'lucky_user_states' AND COLUMN_NAME = 'pending_jackpot_tokens') = 0,
  'ALTER TABLE lucky_user_states ADD COLUMN pending_jackpot_tokens BIGINT NOT NULL DEFAULT 0 COMMENT ''未消费大奖机会；资金不足时允许跨日保留'' AFTER loss_streak', 'SELECT 1');
PREPARE stmt FROM @ddl; EXECUTE stmt; DEALLOCATE PREPARE stmt;

-- pool_id 最长 96；RTP 还拼接 :v<rule_version>，风控还拼接最长 128 的设备/房间主体，旧列宽会在合法输入上截断。
SET @ddl := IF((SELECT COALESCE(CHARACTER_MAXIMUM_LENGTH, 0) FROM information_schema.COLUMNS WHERE TABLE_SCHEMA = DATABASE() AND TABLE_NAME = 'lucky_rtp_windows' AND COLUMN_NAME = 'scope_id') < 128,
  'ALTER TABLE lucky_rtp_windows MODIFY COLUMN scope_id VARCHAR(128) NOT NULL COMMENT ''奖池+不可变规则版本作用域''', 'SELECT 1');
PREPARE stmt FROM @ddl; EXECUTE stmt; DEALLOCATE PREPARE stmt;

SET @ddl := IF((SELECT COALESCE(CHARACTER_MAXIMUM_LENGTH, 0) FROM information_schema.COLUMNS WHERE TABLE_SCHEMA = DATABASE() AND TABLE_NAME = 'lucky_risk_counters' AND COLUMN_NAME = 'scope_id') < 255,
  'ALTER TABLE lucky_risk_counters MODIFY COLUMN scope_id VARCHAR(255) NOT NULL COMMENT ''pool_id+风控主体 ID''', 'SELECT 1');
PREPARE stmt FROM @ddl; EXECUTE stmt; DEALLOCATE PREPARE stmt;

-- 三张运行状态表都是 owner 库内聚合/计数事实；热路径只锁这些小表，禁止回扫开奖结果明细计算 72h RTP 或风控额度。
CREATE TABLE IF NOT EXISTS lucky_risk_counters (
  app_code VARCHAR(32) NOT NULL DEFAULT 'lalu' COMMENT '应用编码',
  scope_type VARCHAR(32) NOT NULL COMMENT 'user/device/room/anchor',
  scope_id VARCHAR(255) NOT NULL COMMENT '风控主体 ID，运行侧包含 pool 前缀',
  window_type VARCHAR(32) NOT NULL COMMENT 'hour/day',
  bucket_key VARCHAR(32) NOT NULL COMMENT 'UTC 窗口键',
  payout_coins BIGINT NOT NULL DEFAULT 0 COMMENT '窗口内已支出可见奖励',
  created_at_ms BIGINT NOT NULL COMMENT '创建时间，UTC epoch ms',
  updated_at_ms BIGINT NOT NULL COMMENT '更新时间，UTC epoch ms',
  PRIMARY KEY (app_code, scope_type, scope_id, window_type, bucket_key)
) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_unicode_ci COMMENT='幸运礼物多维风控窗口计数';

CREATE TABLE IF NOT EXISTS lucky_user_rtp_hour_buckets (
  app_code VARCHAR(32) NOT NULL DEFAULT 'lalu' COMMENT '应用编码',
  pool_id VARCHAR(96) NOT NULL COMMENT '幸运礼物奖池 ID',
  user_id BIGINT NOT NULL COMMENT '用户 ID',
  bucket_hour_ms BIGINT NOT NULL COMMENT 'UTC 小时开始时间，epoch ms',
  wager_coins BIGINT NOT NULL DEFAULT 0 COMMENT '小时内抽奖流水金币',
  payout_coins BIGINT NOT NULL DEFAULT 0 COMMENT '小时内返奖金币',
  created_at_ms BIGINT NOT NULL COMMENT '创建时间，UTC epoch ms',
  updated_at_ms BIGINT NOT NULL COMMENT '更新时间，UTC epoch ms',
  PRIMARY KEY (app_code, pool_id, user_id, bucket_hour_ms),
  KEY idx_lucky_user_rtp_hour_retention (app_code, bucket_hour_ms)
) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_unicode_ci COMMENT='用户滚动72小时RTP小时桶';

CREATE TABLE IF NOT EXISTS lucky_user_rtp_boundary_events (
  app_code VARCHAR(32) NOT NULL DEFAULT 'lalu' COMMENT '应用编码',
  pool_id VARCHAR(96) NOT NULL COMMENT '幸运礼物奖池 ID',
  user_id BIGINT NOT NULL COMMENT '用户 ID',
  draw_id VARCHAR(128) NOT NULL COMMENT '单抽事实 ID，用于幂等',
  occurred_at_ms BIGINT NOT NULL COMMENT '扣费事实时间，UTC epoch ms',
  wager_coins BIGINT NOT NULL COMMENT '本抽流水金币',
  payout_coins BIGINT NOT NULL COMMENT '本抽已承诺返奖负债',
  created_at_ms BIGINT NOT NULL COMMENT '创建时间，UTC epoch ms',
  PRIMARY KEY (app_code, pool_id, user_id, draw_id),
  KEY idx_lucky_user_rtp_boundary_range (app_code, pool_id, user_id, occurred_at_ms)
) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_unicode_ci COMMENT='用户严格滚动72小时RTP边界事件';

CREATE TABLE IF NOT EXISTS lucky_user_strategy_days (
  app_code VARCHAR(32) NOT NULL DEFAULT 'lalu' COMMENT '应用编码',
  pool_id VARCHAR(96) NOT NULL COMMENT '幸运礼物奖池 ID',
  user_id BIGINT NOT NULL COMMENT '用户 ID',
  stat_day DATE NOT NULL COMMENT 'UTC 自然日',
  wager_coins BIGINT NOT NULL DEFAULT 0 COMMENT '当日抽奖流水金币',
  payout_coins BIGINT NOT NULL DEFAULT 0 COMMENT '当日返奖金币',
  spend_coins BIGINT NOT NULL DEFAULT 0 COMMENT '当日大奖资格累计消费金币',
  jackpot_hits BIGINT NOT NULL DEFAULT 0 COMMENT '当日大奖命中次数',
  created_at_ms BIGINT NOT NULL COMMENT '创建时间，UTC epoch ms',
  updated_at_ms BIGINT NOT NULL COMMENT '更新时间，UTC epoch ms',
  PRIMARY KEY (app_code, pool_id, user_id, stat_day),
  KEY idx_lucky_user_strategy_days_retention (app_code, stat_day)
) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_unicode_ci COMMENT='用户dynamic_v3 UTC日级状态';

-- 旧库只有 lucky_draw_records 唯一键，两个尚无结果的首次请求仍可能同时穿过空读并让后到者失败。
-- 独立锁行先串行化原始 command_id，后到请求再回读首次事务一次性提交的全部子抽事实。
CREATE TABLE IF NOT EXISTS lucky_gift_command_locks (
  app_code VARCHAR(32) NOT NULL DEFAULT 'lalu' COMMENT '应用编码',
  command_id VARCHAR(128) NOT NULL COMMENT '钱包已扣费命令幂等 ID',
  created_at_ms BIGINT NOT NULL COMMENT '首次请求时间，UTC epoch ms',
  PRIMARY KEY (app_code, command_id)
) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_unicode_ci COMMENT='内部幸运礼物并发幂等锁行';

CREATE TABLE IF NOT EXISTS external_lucky_gift_draw_items (
  app_code VARCHAR(32) NOT NULL COMMENT '外部 App 应用编码',
  request_id VARCHAR(128) NOT NULL COMMENT '聚合请求幂等 ID',
  item_index INT NOT NULL COMMENT '从1开始的顺序子抽序号',
  draw_id VARCHAR(128) NOT NULL COMMENT '子抽事实 ID',
  command_id VARCHAR(128) NOT NULL COMMENT '稳定子命令 ID',
  external_user_id VARCHAR(128) NOT NULL COMMENT '外部 App 用户 ID',
  pool_id VARCHAR(96) NOT NULL COMMENT '幸运礼物奖池 ID',
  rule_version BIGINT NOT NULL COMMENT '不可变规则版本',
  unit_amount BIGINT NOT NULL COMMENT '本抽实际金额',
  reward_amount BIGINT NOT NULL COMMENT '本抽奖励金额',
  selected_tier_id VARCHAR(96) NOT NULL COMMENT '本抽最终奖档',
  multiplier_ppm BIGINT NOT NULL COMMENT '本抽倍率',
  stage VARCHAR(32) NOT NULL COMMENT '充值分层',
  candidate_snapshot_json JSON NOT NULL COMMENT '动态权重、删除重抽及大奖条件快照',
  pool_snapshot_json JSON NOT NULL COMMENT '本抽资金拆分和池快照',
  rtp_snapshot_json JSON NOT NULL COMMENT '本抽RTP快照',
  reward_status VARCHAR(32) NOT NULL DEFAULT 'granted' COMMENT '外部调用方自行结算',
  paid_at_ms BIGINT NOT NULL COMMENT '外部扣费时间，UTC epoch ms',
  created_at_ms BIGINT NOT NULL COMMENT '创建时间，UTC epoch ms',
  PRIMARY KEY (app_code, request_id, item_index),
  UNIQUE KEY uk_external_lucky_item_draw (app_code, draw_id),
  KEY idx_external_lucky_item_user (app_code, external_user_id, created_at_ms)
) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_unicode_ci COMMENT='外部dynamic_v3顺序子抽审计';

CREATE TABLE IF NOT EXISTS external_lucky_gift_request_locks (
  app_code VARCHAR(32) NOT NULL COMMENT '外部 App 应用编码',
  request_id VARCHAR(128) NOT NULL COMMENT '外部业务幂等 ID',
  created_at_ms BIGINT NOT NULL COMMENT '首次请求时间，UTC epoch ms',
  PRIMARY KEY (app_code, request_id)
) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_unicode_ci COMMENT='外部幸运礼物并发幂等锁行';