USE zhiyuantong;

CREATE TABLE IF NOT EXISTS review_records (
  review_id BIGINT UNSIGNED NOT NULL AUTO_INCREMENT COMMENT '审核记录自增主键',
  entity_type VARCHAR(64) NOT NULL COMMENT '被审核数据类型，如school、admission_group或cutoff_line',
  entity_key VARCHAR(128) NOT NULL COMMENT '被审核记录的业务主键字符串',
  review_status VARCHAR(32) NOT NULL DEFAULT 'pending' COMMENT '审核状态：pending、approved、rejected或needs_review',
  reviewer_name VARCHAR(128) NULL COMMENT '最近一次审核人员姓名或标识',
  review_note TEXT NULL COMMENT '最近一次审核意见',
  reviewed_at DATETIME NULL COMMENT '最近一次实际审核时间',
  created_at DATETIME NOT NULL DEFAULT CURRENT_TIMESTAMP COMMENT '审核记录创建时间',
  updated_at DATETIME NOT NULL DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP COMMENT '审核记录最近更新时间',
  PRIMARY KEY (review_id),
  UNIQUE KEY uk_review_entity (entity_type, entity_key),
  KEY idx_review_status (review_status, entity_type)
) ENGINE=InnoDB COMMENT='跨数据表的当前人工审核结论';

CREATE TABLE IF NOT EXISTS review_audit_logs (
  review_log_id BIGINT UNSIGNED NOT NULL AUTO_INCREMENT COMMENT '审核操作日志自增主键',
  review_id BIGINT UNSIGNED NOT NULL COMMENT '关联当前审核记录ID',
  entity_type VARCHAR(64) NOT NULL COMMENT '被审核数据类型快照',
  entity_key VARCHAR(128) NOT NULL COMMENT '被审核记录业务主键快照',
  previous_status VARCHAR(32) NULL COMMENT '操作前审核状态，首次审核时为空',
  new_status VARCHAR(32) NOT NULL COMMENT '操作后审核状态',
  reviewer_name VARCHAR(128) NOT NULL COMMENT '执行本次审核的人员姓名或标识',
  review_note TEXT NULL COMMENT '本次审核意见',
  created_at DATETIME NOT NULL DEFAULT CURRENT_TIMESTAMP COMMENT '本次审核操作发生时间',
  PRIMARY KEY (review_log_id),
  KEY idx_review_logs_review (review_id, created_at),
  KEY idx_review_logs_entity (entity_type, entity_key, created_at),
  CONSTRAINT fk_review_logs_review FOREIGN KEY (review_id) REFERENCES review_records(review_id)
) ENGINE=InnoDB COMMENT='人工审核状态变更的不可覆盖历史日志';