-- ============================================================
-- Snail AI MySQL 全量建表脚本（仅 CREATE，无 ALTER）
-- 使用：mysql -u user -p database < snail_ai_schema.sql
-- ============================================================

-- ============================================================
-- Enterprise RAG Schema for MySQL
-- ============================================================

-- Knowledge Base
CREATE TABLE snail_ai_rag
(
    id                        BIGINT       NOT NULL AUTO_INCREMENT PRIMARY KEY,
    name                      VARCHAR(255) NOT NULL,
    description               TEXT,
    icon                      VARCHAR(512),
    embedding_model_id        BIGINT(128)  NOT NULL,
    dimension_of_vector_model INT          NOT NULL COMMENT '向量维度',
    rerank_model_id           BIGINT(128),
    search_engine_instance_id BIGINT(128),
    vector_store_instance_id  BIGINT(128),
    search_engine_enable      TINYINT(1)            DEFAULT 0,
    delimiter                 VARCHAR(32)           DEFAULT '\n\n',
    rag_enhancement           TEXT,
    config                    TEXT                  DEFAULT NULL COMMENT 'RAG检索和问答的页面配置参数',
    dedup_strategy            TINYINT(1)   NOT NULL DEFAULT 2            COMMENT '去重策略: 0=NONE 1=BY_NAME 2=BY_CONTENT 3=BY_NAME_OR_CONTENT',
    dedup_action              TINYINT(1)   NOT NULL DEFAULT 0            COMMENT '冲突动作: 0=REJECT 1=SKIP 2=OVERWRITE',
    upload_confirm            TINYINT(1)   NOT NULL DEFAULT 1            COMMENT '上传前二次确认: 0-关 1-开',
    create_dt                 TIMESTAMP             DEFAULT CURRENT_TIMESTAMP,
    update_dt                 TIMESTAMP             DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP
) ENGINE = InnoDB
  DEFAULT CHARSET = utf8mb4
  COLLATE = utf8mb4_unicode_ci;

-- RAG Documents
CREATE TABLE snail_ai_rag_document
(
    id           BIGINT NOT NULL AUTO_INCREMENT PRIMARY KEY,
    rag_id       BIGINT NOT NULL,
    name         VARCHAR(255),
    file_type    VARCHAR(32),
    source_type  VARCHAR(32),
    source_path  VARCHAR(1024),
    storage_path VARCHAR(1024),
    storage_type VARCHAR(32) DEFAULT 'LOCAL',
    file_size    BIGINT      DEFAULT 0,
    content      TEXT,
    status       TINYINT(1)  DEFAULT 0 COMMENT '状态: 0-待处理 1-解析中 2-处理中 3-处理完成 4-处理失败',
    error_msg    TEXT,
    chunk_count  INT         DEFAULT 0,
    content_hash VARCHAR(64) DEFAULT NULL COMMENT '文件内容SHA-256哈希，用于去重',
    resource_id  BIGINT      DEFAULT NULL COMMENT '关联资源库 snail_ai_resource.id',
    create_dt    TIMESTAMP   DEFAULT CURRENT_TIMESTAMP,
    update_dt    TIMESTAMP   DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP
) ENGINE = InnoDB
  DEFAULT CHARSET = utf8mb4
  COLLATE = utf8mb4_unicode_ci;

CREATE INDEX idx_rag_doc_rag ON snail_ai_rag_document (rag_id);
CREATE INDEX idx_rag_content_hash ON snail_ai_rag_document (rag_id, content_hash);
CREATE INDEX idx_rag_name ON snail_ai_rag_document (rag_id, name);
CREATE INDEX idx_rag_doc_resource ON snail_ai_rag_document (resource_id);

-- RAG Chunks
CREATE TABLE snail_ai_rag_chunk
(
    id              BIGINT NOT NULL AUTO_INCREMENT PRIMARY KEY,
    rag_id          BIGINT NOT NULL,
    document_id     BIGINT NOT NULL,
    paragraph_index INT,
    chunk_index     INT,
    content         TEXT,
    token_count     INT,
    vector_id       VARCHAR(128),
    content_hash    VARCHAR(64) DEFAULT NULL COMMENT 'chunk内容SHA-256，用于向量去重',
    create_dt       TIMESTAMP DEFAULT CURRENT_TIMESTAMP,
    update_dt       TIMESTAMP DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP
) ENGINE = InnoDB
  DEFAULT CHARSET = utf8mb4
  COLLATE = utf8mb4_unicode_ci;

CREATE INDEX idx_rag_chunk_rag ON snail_ai_rag_chunk (rag_id);
CREATE INDEX idx_rag_chunk_document ON snail_ai_rag_chunk (document_id);
CREATE INDEX idx_chunk_rag_hash ON snail_ai_rag_chunk (rag_id, content_hash);

CREATE TABLE snail_ai_user
(
    id             BIGINT AUTO_INCREMENT PRIMARY KEY,
    role           INT,
    totals         INT,
    username       VARCHAR(255),
    email          VARCHAR(64),
    password       VARCHAR(64) NOT NULL,
    create_dt      DATETIME    NOT NULL DEFAULT CURRENT_TIMESTAMP,
    update_dt      DATETIME    NOT NULL DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP,
    UNIQUE KEY uk_username (username)
) ENGINE = InnoDB
  DEFAULT CHARSET = utf8mb4;

INSERT INTO snail_ai_user (id, role, username, email, password, create_dt, update_dt)
VALUES (1, 2, 'admin', '',  '094c883e17947ff795de8b22279d81c2600dfe85e2dba3fbf562423e883b07ca',
        '2026-02-11 13:56:48.210429', '2026-02-11 13:56:48.210429');

-- ============================================
-- 1. AI 模型提供商表
-- ============================================
CREATE TABLE IF NOT EXISTS snail_ai_model_provider
(
    id            BIGINT       NOT NULL AUTO_INCREMENT PRIMARY KEY,
    provider_name VARCHAR(255) NOT NULL COMMENT '提供商名称',
    provider_key  VARCHAR(50)  NOT NULL COMMENT '提供商标识符',
    description   TEXT COMMENT '提供商描述',
    icon_url      VARCHAR(500) COMMENT 'LOGO图标URL',
    is_enabled    TINYINT(1) DEFAULT 1 COMMENT '是否启用',
    created_dt    TIMESTAMP  DEFAULT CURRENT_TIMESTAMP COMMENT '创建时间',
    updated_dt    TIMESTAMP  DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP COMMENT '更新时间',
    UNIQUE KEY uk_provider_name (provider_name),
    UNIQUE KEY uk_provider_key (provider_key)
    ) ENGINE = InnoDB
    DEFAULT CHARSET = utf8mb4
    COLLATE = utf8mb4_unicode_ci COMMENT = 'AI模型提供商表';

CREATE INDEX idx_provider_key ON snail_ai_model_provider (provider_key);
CREATE INDEX idx_is_enabled ON snail_ai_model_provider (is_enabled);

-- ============================================
-- 2. AI模型配置表
-- ============================================
CREATE TABLE IF NOT EXISTS snail_ai_model_config
(
    id           BIGINT       NOT NULL AUTO_INCREMENT PRIMARY KEY,
    provider_id  BIGINT       NOT NULL COMMENT '提供商ID',
    model_name   VARCHAR(255) NOT NULL COMMENT '模型名称',
    model_key    VARCHAR(100) NOT NULL COMMENT '模型标识符',
    model_type   VARCHAR(50)  NOT NULL COMMENT '模型类型(CHAT/EMBEDDING/RERANKER/IMAGE/SPEECH)',
    description  VARCHAR(1000) COMMENT '模型描述',
    api_key      VARCHAR(1000) COMMENT 'API密钥(加密存储)',
    api_endpoint VARCHAR(500) COMMENT 'API端点URL',
    config_json  TEXT COMMENT '模型参数配置(JSON格式)',
    owner_id     BIGINT COMMENT '所有者ID(NULL=全局,具体值=用户ID)',
    scope        VARCHAR(20)  NOT NULL DEFAULT 'GLOBAL' COMMENT '作用域(GLOBAL/PERSONAL)',
    is_default   TINYINT(1)            DEFAULT 0 COMMENT '是否为默认模型',
    is_enabled   TINYINT(1)            DEFAULT 1 COMMENT '是否启用',
    created_dt   TIMESTAMP             DEFAULT CURRENT_TIMESTAMP COMMENT '创建时间',
    updated_dt   TIMESTAMP             DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP COMMENT '更新时间',
    KEY fk_provider_id (provider_id)
    ) ENGINE = InnoDB
    DEFAULT CHARSET = utf8mb4
    COLLATE = utf8mb4_unicode_ci COMMENT = 'AI模型配置表';

CREATE INDEX idx_provider_model_type ON snail_ai_model_config (provider_id, model_type);
CREATE INDEX idx_model_type_enabled ON snail_ai_model_config (model_type, is_enabled);
CREATE INDEX idx_owner_id ON snail_ai_model_config (owner_id);
CREATE INDEX idx_is_default ON snail_ai_model_config (is_default);
CREATE INDEX idx_scope ON snail_ai_model_config (scope);
CREATE INDEX idx_model_key ON snail_ai_model_config (model_key);

-- ============================================
-- 3. 模型使用统计表
-- ============================================
CREATE TABLE IF NOT EXISTS snail_ai_model_usage_stat
(
    id                BIGINT    NOT NULL AUTO_INCREMENT PRIMARY KEY,
    model_id          BIGINT    NOT NULL COMMENT '模型ID',
    user_id           BIGINT    NOT NULL COMMENT '用户ID',
    total_calls       BIGINT         DEFAULT 0 COMMENT '总调用次数',
    success_calls     BIGINT         DEFAULT 0 COMMENT '成功调用次数',
    failed_calls      BIGINT         DEFAULT 0 COMMENT '失败调用次数',
    total_tokens_used BIGINT         DEFAULT 0 COMMENT '总Token使用量',
    total_cost        DECIMAL(18, 8) DEFAULT 0 COMMENT '总费用',
    avg_response_time BIGINT         DEFAULT 0 COMMENT '平均响应时间(毫秒)',
    last_used_dt      TIMESTAMP NULL DEFAULT NULL COMMENT '最后使用时间',
    created_dt        TIMESTAMP      DEFAULT CURRENT_TIMESTAMP COMMENT '创建时间',
    updated_dt        TIMESTAMP      DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP COMMENT '更新时间',
    UNIQUE KEY unique_model_user (model_id, user_id),
    KEY fk_stat_model_id (model_id)
    ) ENGINE = InnoDB
    DEFAULT CHARSET = utf8mb4
    COLLATE = utf8mb4_unicode_ci COMMENT = '模型使用统计表';

CREATE INDEX idx_model_id ON snail_ai_model_usage_stat (model_id);
CREATE INDEX idx_user_id ON snail_ai_model_usage_stat (user_id);
CREATE INDEX idx_last_used_dt ON snail_ai_model_usage_stat (last_used_dt);

-- ============================================
-- 初始化数据 (可选)
-- ============================================
-- 插入常见的AI提供商（重复 provider_key 则忽略）
INSERT IGNORE INTO snail_ai_model_provider (provider_name, provider_key, description, is_enabled)
VALUES ('OpenAI', 'openai', 'OpenAI官方模型 (GPT-4, GPT-3.5等)', 1),
       ('Claude', 'claude', 'Anthropic Claude模型', 1),
       ('Ollama', 'ollama', '本地开源模型 (Llama, Mistral等)', 1),
       ('Google Gemini', 'gemini', 'Google Gemini模型', 1);

-- ============================================
-- 智能体相关表
-- ============================================

-- 智能体主表
CREATE TABLE IF NOT EXISTS snail_ai_agent
(
    id                      BIGINT       NOT NULL AUTO_INCREMENT PRIMARY KEY,
    name                    VARCHAR(255) NOT NULL COMMENT '智能体名称',
    description             TEXT COMMENT '智能体描述',
    avatar                  VARCHAR(512) COMMENT '头像URL',
    instruction             TEXT COMMENT '系统指令(System Prompt)',
    greeting                TEXT COMMENT '欢迎语',
    preset_questions        TEXT COMMENT '预设问题列表（JSON数组字符串）',
    chat_model_id           BIGINT COMMENT '关联的对话模型ID',
    memory_enabled          TINYINT(1)  DEFAULT 0 COMMENT '是否启用记忆库',
    mcp_enabled             TINYINT(1)  DEFAULT 0 COMMENT '是否启用MCP',
    skill_enabled           TINYINT(1)  DEFAULT 0 COMMENT '是否启用Skill',
    web_search_enabled      TINYINT(1)  DEFAULT 0 COMMENT '是否启用联网搜索',
    rag_enabled             TINYINT(1)  DEFAULT 0 COMMENT '是否启用RAG',
    rag_id                  BIGINT NULL COMMENT '绑定的RAG ID',
    short_term_memory_size  INT         DEFAULT 20 COMMENT '短期记忆滑动窗口保留条数',
    creator_id              BIGINT COMMENT '创建者用户ID',
    is_featured             TINYINT(1)  DEFAULT 0 COMMENT '是否精选',
    view_count              INT         DEFAULT 0 COMMENT '浏览次数',
    status                  TINYINT     DEFAULT 1 COMMENT '状态: 1-活跃 2-非活跃 3-已废弃 4-已禁用',
    config                  TEXT COMMENT '扩展配置(预留)',
    app_id                  VARCHAR(128) NULL COMMENT '关联应用ID(NULL=本地执行)',
    create_dt               TIMESTAMP   DEFAULT CURRENT_TIMESTAMP,
    update_dt               TIMESTAMP   DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP
    ) ENGINE = InnoDB
    DEFAULT CHARSET = utf8mb4
    COLLATE = utf8mb4_unicode_ci COMMENT = '智能体表';

CREATE INDEX idx_agent_creator ON snail_ai_agent (creator_id);
CREATE INDEX idx_agent_featured ON snail_ai_agent (is_featured);

-- 智能体对话表
CREATE TABLE IF NOT EXISTS snail_ai_agent_conversation
(
    id              BIGINT      NOT NULL AUTO_INCREMENT PRIMARY KEY,
    agent_id        BIGINT      NOT NULL COMMENT '智能体ID',
    user_id         BIGINT      NOT NULL COMMENT '用户ID',
    conversation_id VARCHAR(64) NOT NULL COMMENT '对话ID(UUID)',
    title           VARCHAR(255) COMMENT '对话标题',
    create_dt       TIMESTAMP DEFAULT CURRENT_TIMESTAMP,
    update_dt       TIMESTAMP DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP,
    UNIQUE KEY uk_conv_id (conversation_id)
    ) ENGINE = InnoDB
    DEFAULT CHARSET = utf8mb4
    COLLATE = utf8mb4_unicode_ci COMMENT = '智能体对话表';

CREATE INDEX idx_agent_conv_agent ON snail_ai_agent_conversation (agent_id);
CREATE INDEX idx_agent_conv_user ON snail_ai_agent_conversation (user_id);

-- 智能体对话消息记录表
CREATE TABLE IF NOT EXISTS snail_ai_agent_conversation_record
(
    id              BIGINT      NOT NULL AUTO_INCREMENT PRIMARY KEY,
    agent_id        BIGINT      NOT NULL COMMENT '智能体ID',
    conversation_id VARCHAR(64) NOT NULL COMMENT '对话ID',
    user_id         BIGINT      NOT NULL COMMENT '用户ID',
    role            VARCHAR(16) DEFAULT 'user' COMMENT 'user/assistant',
    content         TEXT COMMENT '消息内容',
    thinking        TEXT COMMENT '思考过程（仅assistant）',
    status          INT         DEFAULT 1 COMMENT '1=成功,2=失败,3=进行中',
    token_count     INT         DEFAULT 0 COMMENT 'Token数',
    create_dt       TIMESTAMP   DEFAULT CURRENT_TIMESTAMP
    ) ENGINE = InnoDB
    DEFAULT CHARSET = utf8mb4
    COLLATE = utf8mb4_unicode_ci COMMENT = '智能体对话消息记录';

CREATE INDEX idx_agent_rec_conv ON snail_ai_agent_conversation_record (conversation_id);

-- 智能体使用统计表
CREATE TABLE IF NOT EXISTS snail_ai_agent_usage_stat
(
    id                 BIGINT NOT NULL AUTO_INCREMENT PRIMARY KEY,
    agent_id           BIGINT NOT NULL COMMENT '智能体ID',
    user_id            BIGINT NOT NULL COMMENT '用户ID',
    user_name          VARCHAR(255) COMMENT '用户名',
    department         VARCHAR(255) DEFAULT '' COMMENT '部门',
    message_count      INT          DEFAULT 0 COMMENT '消息条数',
    conversation_count INT          DEFAULT 0 COMMENT '对话轮次',
    stat_date          DATE   NOT NULL COMMENT '统计日期',
    create_dt          TIMESTAMP    DEFAULT CURRENT_TIMESTAMP,
    update_dt          TIMESTAMP    DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP,
    UNIQUE KEY uk_agent_user_date (agent_id, user_id, stat_date)
    ) ENGINE = InnoDB
    DEFAULT CHARSET = utf8mb4
    COLLATE = utf8mb4_unicode_ci COMMENT = '智能体使用统计';

CREATE INDEX idx_usage_agent ON snail_ai_agent_usage_stat (agent_id);
CREATE INDEX idx_usage_date ON snail_ai_agent_usage_stat (stat_date);

-- ============================================
-- MCP 服务管理
-- ============================================

-- MCP 服务配置表
CREATE TABLE IF NOT EXISTS snail_ai_mcp_server
(
    id               BIGINT        NOT NULL AUTO_INCREMENT PRIMARY KEY,
    name             VARCHAR(255)  NOT NULL COMMENT 'MCP服务名称',
    description      TEXT          COMMENT 'MCP服务描述',
    transport_type   TINYINT(1)    DEFAULT 1 COMMENT '传输类型: 1-SSE 2-Streamable HTTP 3-Stdio',
    base_uri         VARCHAR(1024) COMMENT '服务基础地址(SSE/Streamable HTTP时使用)',
    endpoint         VARCHAR(1024) COMMENT '端点路径(SSE/Streamable HTTP时可选)',
    command          VARCHAR(1024) COMMENT 'Stdio命令(Stdio时必填)',
    args             TEXT          COMMENT 'Stdio命令参数(JSON数组)',
    env_vars         TEXT          COMMENT 'Stdio环境变量(JSON对象)',
    version          VARCHAR(32)   DEFAULT '1.0.0' COMMENT '版本',
    auth_type        TINYINT(1)    DEFAULT 0 COMMENT '认证方式: 0-无需认证 1-API Key 2-OAuth 3-Basic Auth',
    auth_config      TEXT          COMMENT '认证配置(JSON)',
    status           TINYINT(1)    DEFAULT 0 COMMENT '状态: 0-未连接 1-已连接 2-异常',
    capabilities     TEXT          COMMENT '能力列表(JSON数组)',
    last_connect_dt  TIMESTAMP NULL COMMENT '最后连接时间',
    creator_id       BIGINT        COMMENT '创建者用户ID',
    create_dt        TIMESTAMP     DEFAULT CURRENT_TIMESTAMP,
    update_dt        TIMESTAMP     DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP
    ) ENGINE = InnoDB
    DEFAULT CHARSET = utf8mb4
    COLLATE = utf8mb4_unicode_ci COMMENT = 'MCP服务配置表';

CREATE INDEX idx_mcp_server_creator ON snail_ai_mcp_server (creator_id);
CREATE INDEX idx_mcp_server_status ON snail_ai_mcp_server (status);

-- 智能体与MCP服务关联表(多对多)
CREATE TABLE IF NOT EXISTS snail_ai_agent_mcp_server
(
    id            BIGINT    NOT NULL AUTO_INCREMENT PRIMARY KEY,
    agent_id      BIGINT    NOT NULL COMMENT '智能体ID',
    mcp_server_id BIGINT    NOT NULL COMMENT 'MCP服务ID',
    create_dt     TIMESTAMP DEFAULT CURRENT_TIMESTAMP,
    UNIQUE KEY uk_agent_mcp (agent_id, mcp_server_id)
    ) ENGINE = InnoDB
    DEFAULT CHARSET = utf8mb4
    COLLATE = utf8mb4_unicode_ci COMMENT = '智能体MCP服务关联表';

CREATE INDEX idx_agent_mcp_agent ON snail_ai_agent_mcp_server (agent_id);
CREATE INDEX idx_agent_mcp_server ON snail_ai_agent_mcp_server (mcp_server_id);

-- 用户订阅的智能体（多对多）
CREATE TABLE IF NOT EXISTS snail_ai_user_agent
(
    id         BIGINT    NOT NULL AUTO_INCREMENT PRIMARY KEY,
    user_id    BIGINT    NOT NULL COMMENT '用户ID',
    agent_id   BIGINT    NOT NULL COMMENT '智能体ID',
    create_dt  TIMESTAMP DEFAULT CURRENT_TIMESTAMP,
    UNIQUE KEY uk_user_agent (user_id, agent_id)
    ) ENGINE = InnoDB
    DEFAULT CHARSET = utf8mb4
    COLLATE = utf8mb4_unicode_ci COMMENT = '用户订阅的智能体';

CREATE INDEX idx_user_agent_user ON snail_ai_user_agent (user_id);

-- ============================================
-- Skill 技能包管理
-- ============================================

-- Skill 技能包表
CREATE TABLE IF NOT EXISTS snail_ai_skill
(
    id            BIGINT        NOT NULL AUTO_INCREMENT PRIMARY KEY,
    name          VARCHAR(255)  NOT NULL COMMENT 'Skill名称(从SKILL.md解析)',
    description   TEXT          COMMENT 'Skill描述(从SKILL.md解析)',
    file_name     VARCHAR(255)  COMMENT '上传的zip文件名',
    file_path     VARCHAR(1024) COMMENT '解压后存储路径',
    file_size     BIGINT        DEFAULT 0 COMMENT '文件大小(字节)',
    skill_content LONGTEXT          COMMENT 'SKILL.md正文内容(去除frontmatter)',
    storage_path  VARCHAR(500)  DEFAULT NULL COMMENT '对象存储相对路径前缀（如 skills/123/）',
    version       BIGINT        DEFAULT 0 COMMENT '版本号，文件变更时自增，用于缓存一致性校验',
    has_files     TINYINT(1)    DEFAULT 0 COMMENT '是否包含支撑文件（0=仅SKILL.md，1=有scripts/references等）',
    creator_id    BIGINT        COMMENT '创建者用户ID',
    create_dt     TIMESTAMP     DEFAULT CURRENT_TIMESTAMP,
    update_dt     TIMESTAMP     DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP
    ) ENGINE = InnoDB
    DEFAULT CHARSET = utf8mb4
    COLLATE = utf8mb4_unicode_ci COMMENT = 'Skill技能包表';

CREATE INDEX idx_skill_creator ON snail_ai_skill (creator_id);

-- Skill 支撑文件内容表
CREATE TABLE IF NOT EXISTS snail_ai_skill_file
(
    id         BIGINT       NOT NULL AUTO_INCREMENT PRIMARY KEY,
    skill_id   BIGINT       NOT NULL COMMENT 'Skill ID',
    file_path  VARCHAR(255) NOT NULL COMMENT '文件相对路径',
    content    LONGTEXT     NOT NULL COMMENT '文件内容',
    file_size  INT          NOT NULL COMMENT '文件大小(字节)',
    encoding   VARCHAR(50)  DEFAULT 'utf-8' COMMENT '编码方式',
    created_at TIMESTAMP    DEFAULT CURRENT_TIMESTAMP COMMENT '创建时间',
    updated_at TIMESTAMP    DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP COMMENT '更新时间',
    UNIQUE KEY uk_skill_path (skill_id, file_path) COMMENT '同一Skill不能有重复的文件路径',
    KEY idx_skill_id (skill_id) COMMENT '技能ID索引'
    ) ENGINE = InnoDB
    DEFAULT CHARSET = utf8mb4
    COLLATE = utf8mb4_unicode_ci COMMENT = 'Skill支撑文件内容表';

-- 智能体与Skill关联表(多对多)
CREATE TABLE IF NOT EXISTS snail_ai_agent_skill
(
    id         BIGINT    NOT NULL AUTO_INCREMENT PRIMARY KEY,
    agent_id   BIGINT    NOT NULL COMMENT '智能体ID',
    skill_id   BIGINT    NOT NULL COMMENT 'Skill ID',
    create_dt  TIMESTAMP DEFAULT CURRENT_TIMESTAMP,
    UNIQUE KEY uk_agent_skill (agent_id, skill_id)
    ) ENGINE = InnoDB
    DEFAULT CHARSET = utf8mb4
    COLLATE = utf8mb4_unicode_ci COMMENT = '智能体Skill关联表';

CREATE INDEX idx_agent_skill_agent ON snail_ai_agent_skill (agent_id);
CREATE INDEX idx_agent_skill_skill ON snail_ai_agent_skill (skill_id);

-- ============================================================
CREATE TABLE IF NOT EXISTS snail_ai_store_instance
(
    id         BIGINT       NOT NULL AUTO_INCREMENT PRIMARY KEY,
    name       VARCHAR(128) NOT NULL COMMENT '实例名称',
    category   TINYINT(1)   NOT NULL COMMENT '分类: 1-向量库 2-搜索引擎',
    type       TINYINT(1)   NOT NULL COMMENT '类型: 1-PG_VECTOR 2-MILVUS 3-ELASTICSEARCH 4-PG_FULLTEXT',
    config     TEXT         DEFAULT NULL COMMENT '连接参数 JSON',
    status     TINYINT(1)   DEFAULT 1 COMMENT '状态: 0-停用 1-启用',
    is_default TINYINT(1)   DEFAULT 0 COMMENT '是否为该 category 下默认实例',
    create_dt  TIMESTAMP    DEFAULT CURRENT_TIMESTAMP,
    update_dt  TIMESTAMP    DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP
    ) ENGINE = InnoDB
    DEFAULT CHARSET = utf8mb4
    COLLATE = utf8mb4_unicode_ci COMMENT = '存储实例';

CREATE INDEX idx_store_instance_category ON snail_ai_store_instance (category);
CREATE INDEX idx_store_instance_type ON snail_ai_store_instance (type);

-- ============================================================
-- 记忆系统（配置 / 主表 / 历史 / 摘要 / 统计 / 提取进度）
-- 依赖：snail_ai_store_instance（conversation_memory 外键）
-- ============================================================

-- 客户端应用
-- ----------------------------
CREATE TABLE IF NOT EXISTS snail_ai_app
(
    id             BIGINT       NOT NULL AUTO_INCREMENT PRIMARY KEY,
    app_id         VARCHAR(128) NOT NULL COMMENT '应用唯一标识',
    app_name       VARCHAR(255) NOT NULL COMMENT '应用名称',
    description    VARCHAR(512) COMMENT '应用描述',
    token          VARCHAR(128) NOT NULL COMMENT '通信认证令牌',
    route_strategy VARCHAR(32)  DEFAULT 'LEAST_LOAD' COMMENT '路由策略',
    status         TINYINT(1)   DEFAULT 1 COMMENT '1=启用, 0=停用',
    create_dt      TIMESTAMP    DEFAULT CURRENT_TIMESTAMP,
    update_dt      TIMESTAMP    DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP,
    UNIQUE KEY uk_app_id (app_id)
    ) ENGINE = InnoDB
    DEFAULT CHARSET = utf8mb4
    COLLATE = utf8mb4_unicode_ci COMMENT = '客户端应用';

INSERT INTO snail_ai_app VALUES (1, '1', 'demo', '', 'SAI_7c557fc05a304b0482a65ca67afdb0b8', 'LEAST_LOAD', 1, '2026-05-26 12:31:17', '2026-05-26 12:31:17');

-- ----------------------------
-- AI客户端实例节点
-- ----------------------------
CREATE TABLE IF NOT EXISTS snail_ai_client_node
(
    id                  BIGINT       NOT NULL AUTO_INCREMENT PRIMARY KEY,
    app_id              VARCHAR(128) NOT NULL COMMENT '所属应用ID',
    host_id             VARCHAR(128) NOT NULL COMMENT '客户端实例唯一标识',
    host_ip             VARCHAR(64)  NOT NULL COMMENT '客户端IP',
    grpc_port           INT          NOT NULL COMMENT '客户端gRPC端口',
    max_concurrent      INT          DEFAULT 10 COMMENT '最大并发对话数',
    active_chats        INT          DEFAULT 0 COMMENT '当前活跃对话数',
    supported_providers TEXT COMMENT '支持的模型提供商(JSON数组)',
    labels              TEXT COMMENT '路由标签',
    expire_dt           DATETIME     NOT NULL COMMENT '过期时间(心跳更新)',
    create_dt           TIMESTAMP    DEFAULT CURRENT_TIMESTAMP,
    update_dt           TIMESTAMP    DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP,
    UNIQUE KEY uk_client_node (app_id, host_id),
    INDEX idx_app_expire (app_id, expire_dt)
    ) ENGINE = InnoDB
    DEFAULT CHARSET = utf8mb4
    COLLATE = utf8mb4_unicode_ci COMMENT = 'AI客户端实例节点';

-- OpenAPI 外部用户映射表
CREATE TABLE snail_ai_openapi_user
(
    id               BIGINT       NOT NULL AUTO_INCREMENT PRIMARY KEY,
    app_id           VARCHAR(128) NOT NULL COMMENT '关联 snail_ai_app.app_id',
    open_id          VARCHAR(64)  NOT NULL COMMENT '平台分配的唯一标识（UUID）',
    platform_user_id BIGINT       NOT NULL COMMENT '关联 snail_ai_user.id，注册时自动创建',
    external_id      VARCHAR(256) DEFAULT NULL COMMENT '外部系统的用户标识（可选，幂等用）',
    nickname         VARCHAR(128) DEFAULT NULL COMMENT '外部用户昵称',
    create_dt        TIMESTAMP    DEFAULT CURRENT_TIMESTAMP,
    update_dt        TIMESTAMP    DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP,
    UNIQUE KEY uk_app_open (app_id, open_id),
    UNIQUE KEY uk_app_external (app_id, external_id),
    INDEX            idx_open_id (open_id),
    INDEX            idx_platform_user (platform_user_id)
) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_unicode_ci
  COMMENT='OpenAPI 外部用户映射表';

-- ----------------------------
-- 通用资源存储
-- ----------------------------
CREATE TABLE IF NOT EXISTS snail_ai_resource
(
    id            BIGINT        NOT NULL AUTO_INCREMENT PRIMARY KEY,
    storage_key   VARCHAR(512)  NOT NULL COMMENT '存储键（相对路径或对象Key）',
    original_name VARCHAR(255)  NOT NULL COMMENT '原始文件名',
    file_size     BIGINT        DEFAULT 0 COMMENT '文件大小(bytes)',
    mime_type     VARCHAR(128)  COMMENT 'MIME类型',
    storage_type  VARCHAR(32)   NOT NULL DEFAULT 'LOCAL' COMMENT '存储类型: LOCAL/MINIO',
    access_url    VARCHAR(1024) COMMENT '访问URL',
    biz_type      VARCHAR(64)   NOT NULL DEFAULT 'GENERAL' COMMENT '业务类型: AVATAR/ATTACHMENT/DOCUMENT/GENERAL',
    biz_id        BIGINT        COMMENT '关联业务ID',
    creator_id    BIGINT        COMMENT '上传者ID',
    create_dt     TIMESTAMP     DEFAULT CURRENT_TIMESTAMP,
    update_dt     TIMESTAMP     DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP,
    UNIQUE KEY uk_storage_key (storage_key),
    INDEX idx_biz (biz_type, biz_id),
    INDEX idx_creator (creator_id)
    ) ENGINE = InnoDB
    DEFAULT CHARSET = utf8mb4
    COLLATE = utf8mb4_unicode_ci COMMENT = '通用资源存储';