-- 个人 AI 助理独立知识空间。
-- 个人知识仅按 tenant_id + owner_user_id 隔离，不修改或复用企业 aihr_knowledge_* 表。

CREATE TABLE IF NOT EXISTS `aihr_personal_space` (
  `id` bigint NOT NULL AUTO_INCREMENT COMMENT '主键',
  `tenant_id` varchar(20) NOT NULL DEFAULT '000000' COMMENT '租户编号',
  `owner_user_id` bigint NOT NULL COMMENT '个人空间所属用户ID',
  `owner_ext_party_id` varchar(100) DEFAULT NULL COMMENT '外部组织主体ID',
  `status` varchar(20) NOT NULL DEFAULT 'ACTIVE' COMMENT '空间状态',
  `quota_bytes` bigint NOT NULL DEFAULT 524288000 COMMENT '空间配额，默认500MB',
  `used_bytes` bigint NOT NULL DEFAULT 0 COMMENT '已使用字节数',
  `item_count` int NOT NULL DEFAULT 0 COMMENT '资料数量',
  `create_time` datetime NOT NULL DEFAULT CURRENT_TIMESTAMP COMMENT '创建时间',
  `update_time` datetime NOT NULL DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP COMMENT '更新时间',
  PRIMARY KEY (`id`),
  UNIQUE KEY `uk_aihr_personal_space_owner` (`tenant_id`, `owner_user_id`)
) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_0900_ai_ci COMMENT='个人AI助理知识空间';

CREATE TABLE IF NOT EXISTS `aihr_personal_item` (
  `id` bigint NOT NULL AUTO_INCREMENT COMMENT '主键',
  `tenant_id` varchar(20) NOT NULL DEFAULT '000000' COMMENT '租户编号',
  `owner_user_id` bigint NOT NULL COMMENT '资料所属用户ID',
  `owner_ext_party_id` varchar(100) DEFAULT NULL COMMENT '外部组织主体ID',
  `space_id` bigint NOT NULL COMMENT '个人空间ID',
  `source_type` varchar(30) NOT NULL COMMENT '来源类型: text/file/url',
  `title` varchar(500) NOT NULL COMMENT '资料标题',
  `source_url` varchar(2000) DEFAULT NULL COMMENT '原始网址',
  `oss_id` bigint DEFAULT NULL COMMENT '对象存储ID',
  `oss_url` varchar(2000) DEFAULT NULL COMMENT '对象存储访问地址',
  `mime_type` varchar(255) DEFAULT NULL COMMENT 'MIME类型',
  `size_bytes` bigint NOT NULL DEFAULT 0 COMMENT '资料大小',
  `content_hash` varchar(128) DEFAULT NULL COMMENT '内容摘要哈希',
  `status` varchar(30) NOT NULL DEFAULT 'PENDING' COMMENT '处理状态',
  `attempt_count` int NOT NULL DEFAULT 0 COMMENT '处理尝试次数',
  `last_error` varchar(1000) DEFAULT NULL COMMENT '最后错误信息',
  `summary` text COMMENT '资料摘要',
  `tags_json` longtext COMMENT '标签JSON',
  `captured_time` datetime DEFAULT NULL COMMENT '采集完成时间',
  `parsed_time` datetime DEFAULT NULL COMMENT '解析完成时间',
  `deleted_time` datetime DEFAULT NULL COMMENT '软删除时间',
  `create_time` datetime NOT NULL DEFAULT CURRENT_TIMESTAMP COMMENT '创建时间',
  `update_time` datetime NOT NULL DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP COMMENT '更新时间',
  PRIMARY KEY (`id`),
  KEY `idx_aihr_personal_item_owner_status` (`tenant_id`, `owner_user_id`, `status`, `update_time`),
  KEY `idx_aihr_personal_item_space` (`space_id`, `id`),
  KEY `idx_aihr_personal_item_hash` (`tenant_id`, `owner_user_id`, `content_hash`)
) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_0900_ai_ci COMMENT='个人AI助理资料';

CREATE TABLE IF NOT EXISTS `aihr_personal_fragment` (
  `id` bigint NOT NULL AUTO_INCREMENT COMMENT '主键',
  `tenant_id` varchar(20) NOT NULL DEFAULT '000000' COMMENT '租户编号',
  `owner_user_id` bigint NOT NULL COMMENT '片段所属用户ID',
  `owner_ext_party_id` varchar(100) DEFAULT NULL COMMENT '外部组织主体ID',
  `item_id` bigint NOT NULL COMMENT '个人资料ID',
  `fragment_index` int NOT NULL COMMENT '片段序号',
  `content` text NOT NULL COMMENT '片段内容',
  `token_count` int NOT NULL DEFAULT 0 COMMENT '估算Token数',
  `embedding_model` varchar(100) DEFAULT NULL COMMENT '向量模型',
  `embedding_json` longtext COMMENT '向量JSON',
  `create_time` datetime NOT NULL DEFAULT CURRENT_TIMESTAMP COMMENT '创建时间',
  PRIMARY KEY (`id`),
  UNIQUE KEY `uk_aihr_personal_fragment_item_idx` (`item_id`, `fragment_index`),
  KEY `idx_aihr_personal_fragment_owner` (`tenant_id`, `owner_user_id`, `item_id`),
  FULLTEXT KEY `ft_aihr_personal_fragment_content` (`content`) WITH PARSER ngram
) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_0900_ai_ci COMMENT='个人AI助理知识片段';

CREATE TABLE IF NOT EXISTS `aihr_personal_chat_session` (
  `id` bigint NOT NULL AUTO_INCREMENT COMMENT '主键',
  `tenant_id` varchar(20) NOT NULL DEFAULT '000000' COMMENT '租户编号',
  `owner_user_id` bigint NOT NULL COMMENT '会话所属用户ID',
  `owner_ext_party_id` varchar(100) DEFAULT NULL COMMENT '外部组织主体ID',
  `title` varchar(255) NOT NULL DEFAULT '新对话' COMMENT '会话标题',
  `status` varchar(20) NOT NULL DEFAULT 'ACTIVE' COMMENT '会话状态',
  `create_time` datetime NOT NULL DEFAULT CURRENT_TIMESTAMP COMMENT '创建时间',
  `update_time` datetime NOT NULL DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP COMMENT '更新时间',
  PRIMARY KEY (`id`),
  KEY `idx_aihr_personal_chat_session_owner` (`tenant_id`, `owner_user_id`, `status`, `update_time`)
) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_0900_ai_ci COMMENT='个人AI助理对话会话';

CREATE TABLE IF NOT EXISTS `aihr_personal_chat_message` (
  `id` bigint NOT NULL AUTO_INCREMENT COMMENT '主键',
  `tenant_id` varchar(20) NOT NULL DEFAULT '000000' COMMENT '租户编号',
  `owner_user_id` bigint NOT NULL COMMENT '消息所属用户ID',
  `owner_ext_party_id` varchar(100) DEFAULT NULL COMMENT '外部组织主体ID',
  `session_id` bigint NOT NULL COMMENT '对话会话ID',
  `role` varchar(20) NOT NULL COMMENT '消息角色: user/assistant/system',
  `content` longtext NOT NULL COMMENT '消息内容',
  `citations_json` longtext COMMENT '引用来源JSON',
  `input_tokens` int NOT NULL DEFAULT 0 COMMENT '输入Token数',
  `output_tokens` int NOT NULL DEFAULT 0 COMMENT '输出Token数',
  `model_name` varchar(100) DEFAULT NULL COMMENT '模型名称',
  `create_time` datetime NOT NULL DEFAULT CURRENT_TIMESTAMP COMMENT '创建时间',
  PRIMARY KEY (`id`),
  KEY `idx_aihr_personal_chat_message_session` (`session_id`, `id`),
  KEY `idx_aihr_personal_chat_message_owner` (`tenant_id`, `owner_user_id`, `create_time`)
) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_0900_ai_ci COMMENT='个人AI助理对话消息';