-- 学习闭环：训练题快照/反馈、岗位题库、入职考试（MySQL 8.x）。
-- 可重复执行；先于 aihr_20260717_practice_five_position_catalog_mysql8.sql 执行。

SET @aihr_schema = DATABASE();

SET @content_version_exists = (
  SELECT COUNT(*) FROM information_schema.columns
  WHERE table_schema = @aihr_schema AND table_name = 'aihr_practice_assignment' AND column_name = 'content_version'
);
SET @content_version_ddl = IF(@content_version_exists = 0,
  'ALTER TABLE aihr_practice_assignment ADD COLUMN content_version varchar(30) DEFAULT ''v1'' COMMENT ''派发内容版本''',
  'SELECT 1');
PREPARE aihr_content_version_stmt FROM @content_version_ddl;
EXECUTE aihr_content_version_stmt;
DEALLOCATE PREPARE aihr_content_version_stmt;

SET @question_snapshot_exists = (
  SELECT COUNT(*) FROM information_schema.columns
  WHERE table_schema = @aihr_schema AND table_name = 'aihr_practice_assignment' AND column_name = 'question_snapshot'
);
SET @question_snapshot_ddl = IF(@question_snapshot_exists = 0,
  'ALTER TABLE aihr_practice_assignment ADD COLUMN question_snapshot varchar(1000) DEFAULT NULL COMMENT ''派发时题目快照'' AFTER content_version',
  'SELECT 1');
PREPARE aihr_question_snapshot_stmt FROM @question_snapshot_ddl;
EXECUTE aihr_question_snapshot_stmt;
DEALLOCATE PREPARE aihr_question_snapshot_stmt;

SET @reference_snapshot_exists = (
  SELECT COUNT(*) FROM information_schema.columns
  WHERE table_schema = @aihr_schema AND table_name = 'aihr_practice_assignment' AND column_name = 'reference_answer_snapshot'
);
SET @reference_snapshot_ddl = IF(@reference_snapshot_exists = 0,
  'ALTER TABLE aihr_practice_assignment ADD COLUMN reference_answer_snapshot varchar(2000) DEFAULT NULL COMMENT ''派发时参考答案快照'' AFTER question_snapshot',
  'SELECT 1');
PREPARE aihr_reference_snapshot_stmt FROM @reference_snapshot_ddl;
EXECUTE aihr_reference_snapshot_stmt;
DEALLOCATE PREPARE aihr_reference_snapshot_stmt;

SET @content_hash_exists = (
  SELECT COUNT(*) FROM information_schema.columns
  WHERE table_schema = @aihr_schema AND table_name = 'aihr_practice_assignment' AND column_name = 'content_hash'
);
SET @content_hash_ddl = IF(@content_hash_exists = 0,
  'ALTER TABLE aihr_practice_assignment ADD COLUMN content_hash char(64) DEFAULT NULL COMMENT ''版本化内容哈希'' AFTER reference_answer_snapshot',
  'SELECT 1');
PREPARE aihr_content_hash_stmt FROM @content_hash_ddl;
EXECUTE aihr_content_hash_stmt;
DEALLOCATE PREPARE aihr_content_hash_stmt;

SET @content_hash_index_exists = (
  SELECT COUNT(*) FROM information_schema.statistics
  WHERE table_schema = @aihr_schema AND table_name = 'aihr_practice_assignment' AND index_name = 'idx_aihr_assignment_recent_content'
);
SET @content_hash_index_ddl = IF(@content_hash_index_exists = 0,
  'ALTER TABLE aihr_practice_assignment ADD KEY idx_aihr_assignment_recent_content (tenant_id, ext_party_id, source, content_hash, create_time)',
  'SELECT 1');
PREPARE aihr_content_hash_index_stmt FROM @content_hash_index_ddl;
EXECUTE aihr_content_hash_index_stmt;
DEALLOCATE PREPARE aihr_content_hash_index_stmt;

CREATE TABLE IF NOT EXISTS `aihr_learning_question` (
  `id` bigint NOT NULL AUTO_INCREMENT COMMENT '主键',
  `tenant_id` varchar(20) NOT NULL DEFAULT '000000' COMMENT '租户编号',
  `question_code` varchar(120) NOT NULL COMMENT '题目编码',
  `scenario_code` varchar(80) NOT NULL COMMENT '场景编码',
  `position_code` varchar(80) NOT NULL COMMENT '岗位编码',
  `question_type` varchar(20) NOT NULL DEFAULT 'daily' COMMENT 'daily/special',
  `question_text` varchar(1000) NOT NULL COMMENT '题干',
  `reference_answer` varchar(2000) NOT NULL COMMENT '参考答案',
  `content_version` varchar(30) NOT NULL DEFAULT 'v1' COMMENT '内容版本',
  `content_hash` char(64) NOT NULL COMMENT '题目内容哈希',
  `enabled` tinyint NOT NULL DEFAULT 1 COMMENT '是否启用',
  `sort_order` int NOT NULL DEFAULT 0 COMMENT '排序',
  `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_learning_question` (`tenant_id`, `question_code`),
  KEY `idx_aihr_learning_question_matrix` (`tenant_id`, `position_code`, `question_type`, `enabled`, `sort_order`),
  KEY `idx_aihr_learning_question_hash` (`tenant_id`, `content_hash`)
) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_0900_ai_ci COMMENT='岗位场景学习题库';

CREATE TABLE IF NOT EXISTS `aihr_practice_question_feedback` (
  `id` bigint NOT NULL AUTO_INCREMENT COMMENT '主键',
  `tenant_id` varchar(20) NOT NULL DEFAULT '000000' COMMENT '租户编号',
  `assignment_id` bigint NOT NULL COMMENT '训练题派发ID',
  `ext_party_id` varchar(100) NOT NULL COMMENT '员工身份',
  `verdict` varchar(20) NOT NULL COMMENT 'useful/not_useful',
  `comment` varchar(500) DEFAULT NULL COMMENT '反馈说明',
  `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_question_feedback` (`tenant_id`, `assignment_id`, `ext_party_id`),
  KEY `idx_aihr_question_feedback_verdict` (`tenant_id`, `verdict`, `update_time`)
) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_0900_ai_ci COMMENT='每日题和专项题有用性反馈';

CREATE TABLE IF NOT EXISTS `aihr_onboard_exam` (
  `id` bigint NOT NULL AUTO_INCREMENT COMMENT '主键',
  `tenant_id` varchar(20) NOT NULL DEFAULT '000000' COMMENT '租户编号',
  `title` varchar(200) NOT NULL COMMENT '考试名称',
  `project_code` varchar(100) NOT NULL DEFAULT '' COMMENT '适用项目，空为全部',
  `position_code` varchar(80) NOT NULL DEFAULT '' COMMENT '适用岗位，空为全部',
  `status` varchar(20) NOT NULL DEFAULT 'DRAFT' COMMENT 'DRAFT/PUBLISHED',
  `total_score` int NOT NULL DEFAULT 100 COMMENT '总分',
  `pass_score` int NOT NULL DEFAULT 80 COMMENT '及格分',
  `due_date` date DEFAULT NULL COMMENT '截止日期',
  `created_by` varchar(100) NOT NULL COMMENT '创建人身份',
  `publish_request_key` varchar(100) DEFAULT NULL COMMENT '发布幂等键',
  `published_time` datetime DEFAULT NULL COMMENT '发布时间',
  `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_onboard_exam_publish_request` (`tenant_id`, `created_by`, `publish_request_key`),
  KEY `idx_aihr_onboard_exam_scope` (`tenant_id`, `status`, `project_code`, `position_code`, `due_date`),
  KEY `idx_aihr_onboard_exam_owner` (`tenant_id`, `created_by`, `id`)
) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_0900_ai_ci COMMENT='主管创建的岗前/入职考试';

SET @publish_request_exists = (
  SELECT COUNT(*) FROM information_schema.columns
  WHERE table_schema = @aihr_schema AND table_name = 'aihr_onboard_exam' AND column_name = 'publish_request_key'
);
SET @publish_request_ddl = IF(@publish_request_exists = 0,
  'ALTER TABLE aihr_onboard_exam ADD COLUMN publish_request_key varchar(100) DEFAULT NULL COMMENT ''发布幂等键'' AFTER created_by',
  'SELECT 1');
PREPARE aihr_publish_request_stmt FROM @publish_request_ddl;
EXECUTE aihr_publish_request_stmt;
DEALLOCATE PREPARE aihr_publish_request_stmt;

SET @publish_request_index_exists = (
  SELECT COUNT(*) FROM information_schema.statistics
  WHERE table_schema = @aihr_schema AND table_name = 'aihr_onboard_exam'
    AND index_name = 'uk_aihr_onboard_exam_publish_request'
);
SET @publish_request_index_ddl = IF(@publish_request_index_exists = 0,
  'ALTER TABLE aihr_onboard_exam ADD UNIQUE KEY uk_aihr_onboard_exam_publish_request (tenant_id, created_by, publish_request_key)',
  'SELECT 1');
PREPARE aihr_publish_request_index_stmt FROM @publish_request_index_ddl;
EXECUTE aihr_publish_request_index_stmt;
DEALLOCATE PREPARE aihr_publish_request_index_stmt;

CREATE TABLE IF NOT EXISTS `aihr_onboard_exam_target` (
  `id` bigint NOT NULL AUTO_INCREMENT COMMENT '主键',
  `tenant_id` varchar(20) NOT NULL DEFAULT '000000' COMMENT '租户编号',
  `exam_id` bigint NOT NULL COMMENT '考试ID',
  `ext_party_id` varchar(100) NOT NULL COMMENT '真实员工外部身份',
  `trainee_name` varchar(100) NOT NULL COMMENT '派发时员工姓名快照',
  `project_code` varchar(100) NOT NULL DEFAULT '' COMMENT '派发时项目快照',
  `position_name` varchar(100) NOT NULL DEFAULT '' COMMENT '派发时岗位快照',
  `create_time` datetime DEFAULT NULL COMMENT '创建时间',
  PRIMARY KEY (`id`),
  UNIQUE KEY `uk_aihr_onboard_exam_target` (`tenant_id`, `exam_id`, `ext_party_id`),
  KEY `idx_aihr_onboard_exam_target_party` (`tenant_id`, `ext_party_id`, `exam_id`)
) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_0900_ai_ci COMMENT='入职考试定向人员（最多100人）';

CREATE TABLE IF NOT EXISTS `aihr_onboard_exam_question` (
  `id` bigint NOT NULL AUTO_INCREMENT COMMENT '主键',
  `tenant_id` varchar(20) NOT NULL DEFAULT '000000' COMMENT '租户编号',
  `exam_id` bigint NOT NULL COMMENT '考试ID',
  `question_type` varchar(20) NOT NULL COMMENT 'single/multiple/judge/short',
  `stem` varchar(1000) NOT NULL COMMENT '题干',
  `options_json` text COMMENT '选项JSON',
  `correct_answers_json` text NOT NULL COMMENT '正确答案或关键词JSON',
  `score` int NOT NULL COMMENT '分值',
  `explanation` varchar(1000) DEFAULT NULL COMMENT '解析',
  `sort_order` int NOT NULL DEFAULT 0 COMMENT '排序',
  `create_time` datetime DEFAULT NULL COMMENT '创建时间',
  `update_time` datetime DEFAULT NULL COMMENT '更新时间',
  PRIMARY KEY (`id`),
  KEY `idx_aihr_onboard_exam_question` (`tenant_id`, `exam_id`, `sort_order`)
) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_0900_ai_ci COMMENT='入职考试题目';

CREATE TABLE IF NOT EXISTS `aihr_onboard_exam_attempt` (
  `id` bigint NOT NULL AUTO_INCREMENT COMMENT '主键',
  `tenant_id` varchar(20) NOT NULL DEFAULT '000000' COMMENT '租户编号',
  `exam_id` bigint NOT NULL COMMENT '考试ID',
  `ext_party_id` varchar(100) NOT NULL COMMENT '员工身份',
  `request_key` varchar(100) NOT NULL COMMENT '提交幂等键',
  `status` varchar(20) NOT NULL DEFAULT 'SUBMITTED' COMMENT '提交状态',
  `score` int NOT NULL DEFAULT 0 COMMENT '得分',
  `passed` tinyint NOT NULL DEFAULT 0 COMMENT '是否通过',
  `submitted_time` datetime NOT NULL COMMENT '提交时间',
  `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_onboard_exam_attempt_request` (`tenant_id`, `exam_id`, `ext_party_id`, `request_key`),
  KEY `idx_aihr_onboard_exam_attempt_result` (`tenant_id`, `exam_id`, `score`, `submitted_time`),
  KEY `idx_aihr_onboard_exam_attempt_party` (`tenant_id`, `ext_party_id`, `submitted_time`)
) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_0900_ai_ci COMMENT='入职考试作答记录';

CREATE TABLE IF NOT EXISTS `aihr_onboard_exam_answer` (
  `id` bigint NOT NULL AUTO_INCREMENT COMMENT '主键',
  `tenant_id` varchar(20) NOT NULL DEFAULT '000000' COMMENT '租户编号',
  `attempt_id` bigint NOT NULL COMMENT '作答记录ID',
  `question_id` bigint NOT NULL COMMENT '题目ID',
  `answer_json` text COMMENT '员工答案JSON',
  `correct` tinyint NOT NULL DEFAULT 0 COMMENT '是否正确',
  `earned_score` int NOT NULL DEFAULT 0 COMMENT '本题得分',
  `create_time` datetime DEFAULT NULL COMMENT '创建时间',
  PRIMARY KEY (`id`),
  UNIQUE KEY `uk_aihr_onboard_exam_answer` (`tenant_id`, `attempt_id`, `question_id`),
  KEY `idx_aihr_onboard_exam_answer_question` (`tenant_id`, `question_id`)
) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_0900_ai_ci COMMENT='入职考试逐题答案';