-- AIHR 知识反馈与知识缺口日志迁移（MySQL 8.x）
-- 补齐生产不能依赖运行时懒建表的两张治理表；不写入业务数据，可重复执行。

CREATE TABLE IF NOT EXISTS `aihr_knowledge_gap` (
  `id` bigint NOT NULL AUTO_INCREMENT COMMENT '主键',
  `tenant_id` varchar(20) CHARACTER SET utf8mb4 COLLATE utf8mb4_general_ci DEFAULT '000000' COMMENT '租户编号',
  `query_text` varchar(1000) NOT NULL COMMENT '未命中问题',
  `category` varchar(100) DEFAULT NULL COMMENT '知识分类',
  `position` varchar(80) DEFAULT NULL COMMENT '岗位',
  `source` varchar(50) DEFAULT 'knowledge_search' COMMENT '来源',
  `status` varchar(30) DEFAULT '待补充' COMMENT '状态',
  `create_time` datetime DEFAULT NULL COMMENT '创建时间',
  PRIMARY KEY (`id`),
  KEY `idx_aihr_knowledge_gap_status` (`tenant_id`, `status`, `create_time`)
) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_0900_ai_ci COMMENT='AI HR 知识缺口日志';

CREATE TABLE IF NOT EXISTS `aihr_knowledge_answer_feedback` (
  `id` bigint NOT NULL AUTO_INCREMENT COMMENT '主键',
  `tenant_id` varchar(20) CHARACTER SET utf8mb4 COLLATE utf8mb4_general_ci DEFAULT '000000' COMMENT '租户编号',
  `query_text` varchar(1000) NOT NULL COMMENT '问题原文',
  `query_norm` varchar(500) NOT NULL COMMENT '规范化问题',
  `fragment_id` bigint NOT NULL COMMENT '知识片段ID',
  `verdict` varchar(10) NOT NULL COMMENT '反馈: up/down',
  `feedback_reason_codes` varchar(255) DEFAULT NULL COMMENT '未解决原因代码',
  `feedback_comment` varchar(500) DEFAULT NULL COMMENT '未解决补充说明',
  `category` varchar(100) DEFAULT NULL COMMENT '知识分类',
  `position` varchar(80) DEFAULT NULL COMMENT '岗位',
  `source` varchar(50) DEFAULT 'knowledge_search' COMMENT '来源',
  `review_id` bigint DEFAULT NULL COMMENT '对应SOP问答评审ID',
  `review_status` varchar(30) DEFAULT '待复核' COMMENT '复核状态',
  `reviewer` varchar(100) DEFAULT NULL COMMENT '复核人',
  `reviewed_time` datetime DEFAULT NULL COMMENT '复核时间',
  `create_time` datetime DEFAULT NULL COMMENT '创建时间',
  `update_time` datetime DEFAULT NULL COMMENT '更新时间',
  PRIMARY KEY (`id`),
  UNIQUE KEY `uk_aihr_answer_feedback_pair` (`tenant_id`, `query_norm`, `fragment_id`),
  KEY `idx_aihr_answer_feedback_verdict` (`tenant_id`, `query_norm`, `fragment_id`, `verdict`),
  KEY `idx_aihr_answer_feedback_review` (`tenant_id`, `review_status`, `create_time`)
) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_0900_ai_ci COMMENT='AI HR 知识答案反馈';

SET @aihr_feedback_table_exists := (
  SELECT COUNT(*)
  FROM information_schema.TABLES
  WHERE TABLE_SCHEMA = DATABASE()
    AND TABLE_NAME = 'aihr_knowledge_answer_feedback'
);

SET @aihr_feedback_review_id_exists := (
  SELECT COUNT(*)
  FROM information_schema.COLUMNS
  WHERE TABLE_SCHEMA = DATABASE()
    AND TABLE_NAME = 'aihr_knowledge_answer_feedback'
    AND COLUMN_NAME = 'review_id'
);
SET @aihr_feedback_review_id_ddl := IF(
  @aihr_feedback_table_exists = 1 AND @aihr_feedback_review_id_exists = 0,
  'ALTER TABLE aihr_knowledge_answer_feedback ADD COLUMN `review_id` bigint DEFAULT NULL COMMENT ''对应SOP问答评审ID'' AFTER `source`',
  'SELECT 1'
);
PREPARE aihr_feedback_review_id_stmt FROM @aihr_feedback_review_id_ddl;
EXECUTE aihr_feedback_review_id_stmt;
DEALLOCATE PREPARE aihr_feedback_review_id_stmt;

SET @aihr_feedback_reason_codes_exists := (
  SELECT COUNT(*)
  FROM information_schema.COLUMNS
  WHERE TABLE_SCHEMA = DATABASE()
    AND TABLE_NAME = 'aihr_knowledge_answer_feedback'
    AND COLUMN_NAME = 'feedback_reason_codes'
);
SET @aihr_feedback_reason_codes_ddl := IF(
  @aihr_feedback_table_exists = 1 AND @aihr_feedback_reason_codes_exists = 0,
  'ALTER TABLE aihr_knowledge_answer_feedback ADD COLUMN `feedback_reason_codes` varchar(255) DEFAULT NULL COMMENT ''未解决原因代码'' AFTER `verdict`',
  'SELECT 1'
);
PREPARE aihr_feedback_reason_codes_stmt FROM @aihr_feedback_reason_codes_ddl;
EXECUTE aihr_feedback_reason_codes_stmt;
DEALLOCATE PREPARE aihr_feedback_reason_codes_stmt;

SET @aihr_feedback_comment_exists := (
  SELECT COUNT(*)
  FROM information_schema.COLUMNS
  WHERE TABLE_SCHEMA = DATABASE()
    AND TABLE_NAME = 'aihr_knowledge_answer_feedback'
    AND COLUMN_NAME = 'feedback_comment'
);
SET @aihr_feedback_comment_ddl := IF(
  @aihr_feedback_table_exists = 1 AND @aihr_feedback_comment_exists = 0,
  'ALTER TABLE aihr_knowledge_answer_feedback ADD COLUMN `feedback_comment` varchar(500) DEFAULT NULL COMMENT ''未解决补充说明'' AFTER `feedback_reason_codes`',
  'SELECT 1'
);
PREPARE aihr_feedback_comment_stmt FROM @aihr_feedback_comment_ddl;
EXECUTE aihr_feedback_comment_stmt;
DEALLOCATE PREPARE aihr_feedback_comment_stmt;

SET @aihr_feedback_reviewer_exists := (
  SELECT COUNT(*)
  FROM information_schema.COLUMNS
  WHERE TABLE_SCHEMA = DATABASE()
    AND TABLE_NAME = 'aihr_knowledge_answer_feedback'
    AND COLUMN_NAME = 'reviewer'
);
SET @aihr_feedback_reviewer_ddl := IF(
  @aihr_feedback_table_exists = 1 AND @aihr_feedback_reviewer_exists = 0,
  'ALTER TABLE aihr_knowledge_answer_feedback ADD COLUMN `reviewer` varchar(100) DEFAULT NULL COMMENT ''复核人'' AFTER `review_status`',
  'SELECT 1'
);
PREPARE aihr_feedback_reviewer_stmt FROM @aihr_feedback_reviewer_ddl;
EXECUTE aihr_feedback_reviewer_stmt;
DEALLOCATE PREPARE aihr_feedback_reviewer_stmt;

SET @aihr_feedback_reviewed_time_exists := (
  SELECT COUNT(*)
  FROM information_schema.COLUMNS
  WHERE TABLE_SCHEMA = DATABASE()
    AND TABLE_NAME = 'aihr_knowledge_answer_feedback'
    AND COLUMN_NAME = 'reviewed_time'
);
SET @aihr_feedback_reviewed_time_ddl := IF(
  @aihr_feedback_table_exists = 1 AND @aihr_feedback_reviewed_time_exists = 0,
  'ALTER TABLE aihr_knowledge_answer_feedback ADD COLUMN `reviewed_time` datetime DEFAULT NULL COMMENT ''复核时间'' AFTER `reviewer`',
  'SELECT 1'
);
PREPARE aihr_feedback_reviewed_time_stmt FROM @aihr_feedback_reviewed_time_ddl;
EXECUTE aihr_feedback_reviewed_time_stmt;
DEALLOCATE PREPARE aihr_feedback_reviewed_time_stmt;