"""Pydantic 请求/响应模型定义。

所有 API 的请求体和响应体均在此定义，涵盖：
- 认证（登录/令牌）
- 用户、部门、角色、权限的增删改查
- 任务管理
- 审批流引擎（Flow）：节点/边/版本/执行
- 自定义工具（CustomTool）
- MCP 服务
- Agent 配置
- 通知模板
- 文档上传与解析
- 审计日志
- 系统监控指标
- 通用 API 响应包装
"""

import uuid
from datetime import datetime
from pydantic import BaseModel, Field, ConfigDict


# --- Auth ---
class LoginRequest(BaseModel):
    """登录请求体：用户名 + 密码。"""
    username: str
    password: str


class TokenResponse(BaseModel):
    """令牌响应体：Bearer 令牌 + 用户信息。"""
    access_token: str
    token_type: str = "bearer"
    user: "UserOut"


# --- User ---
class UserCreate(BaseModel):
    """创建用户请求体。"""
    username: str
    password: str
    display_name: str
    email: str | None = None
    phone: str | None = None
    wecom_user_id: str | None = None
    department_id: uuid.UUID | None = None
    position: str | None = None
    manager_id: uuid.UUID | None = None
    role_ids: list[uuid.UUID] = []


class UserUpdate(BaseModel):
    """更新用户请求体（所有字段可选）。"""
    display_name: str | None = None
    email: str | None = None
    phone: str | None = None
    department_id: uuid.UUID | None = None
    position: str | None = None
    manager_id: uuid.UUID | None = None
    status: str | None = None
    role_ids: list[uuid.UUID] | None = None


class UserOut(BaseModel):
    """用户响应体（ORM 映射）。"""
    id: uuid.UUID
    username: str
    display_name: str
    email: str | None = None
    phone: str | None = None
    wecom_user_id: str | None = None
    department_id: uuid.UUID | None = None
    position: str | None = None
    manager_id: uuid.UUID | None = None
    status: str
    roles: list["RoleOut"] = []
    created_at: datetime | None = None

    class Config:
        from_attributes = True


# --- Department ---
class DepartmentCreate(BaseModel):
    """创建部门请求体。"""
    name: str
    parent_id: uuid.UUID | None = None
    sort_order: int = 0


class DepartmentUpdate(BaseModel):
    """更新部门请求体。"""
    name: str | None = None
    parent_id: uuid.UUID | None = None
    sort_order: int | None = None


class DepartmentOut(BaseModel):
    """部门响应体，含嵌套子部门列表。"""
    id: uuid.UUID
    name: str
    parent_id: uuid.UUID | None = None
    path: str
    level: int
    sort_order: int
    children: list["DepartmentOut"] = []

    class Config:
        from_attributes = True


# --- Role ---
class RoleCreate(BaseModel):
    """创建角色/岗位请求体。"""
    name: str
    code: str = ""
    description: str | None = None
    role_type: str = "position"
    data_scope: str = "self_only"
    permission_ids: list[uuid.UUID] = []


class RoleUpdate(BaseModel):
    """更新角色请求体。"""
    name: str | None = None
    description: str | None = None
    role_type: str | None = None
    data_scope: str | None = None
    permission_ids: list[uuid.UUID] | None = None


class RoleOut(BaseModel):
    """角色/岗位响应体，含权限编码列表。"""
    id: uuid.UUID
    name: str
    code: str = ""
    description: str | None = None
    role_type: str = "position"
    is_system: bool
    data_scope: str
    permissions: list[str] = []

    class Config:
        from_attributes = True


# --- Permission ---
class PermissionOut(BaseModel):
    """权限响应体。"""
    id: uuid.UUID
    code: str
    name: str
    resource: str
    action: str

    class Config:
        from_attributes = True


# --- Task ---
class TaskCreate(BaseModel):
    """创建任务请求体。"""
    title: str
    content: str | None = None
    assignee_id: uuid.UUID
    priority: str = "normal"
    deadline: datetime | None = None
    push_to_wecom: bool = True


class TaskUpdate(BaseModel):
    """更新任务请求体。"""
    title: str | None = None
    content: str | None = None
    status: str | None = None
    priority: str | None = None
    deadline: datetime | None = None


class TaskOut(BaseModel):
    """任务响应体。"""
    id: uuid.UUID
    title: str
    content: str | None = None
    assigner_id: uuid.UUID | None = None
    assignee_id: uuid.UUID
    status: str
    priority: str
    deadline: datetime | None = None
    created_at: datetime | None = None
    updated_at: datetime | None = None

    class Config:
        from_attributes = True


# --- Employee Analysis ---
class EmployeeAnalysis(BaseModel):
    """员工分析报告响应体。"""
    employee_name: str
    department: str
    period: str
    task_completion_rate: float
    active_days: int
    total_interactions: int
    main_topics: list[str]
    efficiency_trend: str
    efficiency_detail: str
    strengths: list[str]
    growth_suggestions: list[str]
    personality_traits: str


# --- Flow ---
class TriggerNodeConfig(BaseModel):
    """触发节点配置。"""
    event_type: str = "text_message"
    channels: list[str] = ["wecom"]
    callback_url: str = ""

class LLMNodeConfig(BaseModel):
    """LLM 调用节点配置。"""
    system_prompt: str = ""
    model: str = "gpt-4o-mini"
    temperature: float = 0.7
    agent_id: str = ""
    max_tokens: int = 2000
    context_length: int = 5
    memory_mode: str = "short_term"
    stream: bool = True
    tool_call: bool = False

class ToolNodeConfig(BaseModel):
    """内置工具节点配置。"""
    tool_name: str = ""
    tool_type: str = ""
    tool_params: dict = {}
    timeout: int = 30
    retry_count: int = 0
    error_handling: str = "throw"

class MCPNodeConfig(BaseModel):
    """MCP 服务节点配置。"""
    mcp_server: str = ""
    tool_name: str = ""
    input_params: dict = {}
    timeout: int = 30
    response_parser: str = "json"
    error_handling: str = "throw"

class NotifyNodeConfig(BaseModel):
    """通知节点配置。"""
    channels: dict = {"wecom": True, "web": False}
    message_template: str = ""
    web_template: str = ""
    target: str = ""
    message_type: str = "text"
    async_send: bool = False
    error_handling: str = "throw"

class ConditionNodeConfig(BaseModel):
    """条件分支节点配置。"""
    condition: str = ""
    condition_type: str = "expression"
    true_label: str = "是"
    false_label: str = "否"
    default_branch: str = "false"

class RAGNodeConfig(BaseModel):
    """RAG 检索节点配置。"""
    knowledge_base: str = ""
    top_k: int = 5
    search_mode: str = "hybrid"
    similarity_threshold: float = 0.7
    result_sort: str = "similarity"
    include_metadata: bool = True

class OutputNodeConfig(BaseModel):
    """输出节点配置。"""
    format: str = "text"
    output_template: str = ""
    indent: int = 2
    encoding: str = "utf-8"
    truncate: bool = False
    max_length: int = 2000

class LoopNodeConfig(BaseModel):
    """循环节点配置。"""
    loop_type: str = "fixed"
    max_iterations: int = 10
    count: int = 3
    iterator_variable: str = "item"

class CodeNodeConfig(BaseModel):
    """代码执行节点配置。"""
    language: str = "python"
    code: str = ""
    timeout: int = 30
    sandbox: bool = True

class FlowNode(BaseModel):
    """流程图中单个节点的定义。"""
    id: str | None = None
    type: str
    label: str | None = None
    config: dict = {}


class FlowEdge(BaseModel):
    """流程图中连接边的定义。"""
    source: str | None = None
    target: str | None = None
    from_field: str | None = Field(None, alias="from")
    to_field: str | None = Field(None, alias="to")

    class Config:
        populate_by_name = True


class FlowDefinitionCreate(BaseModel):
    """创建流程定义请求体。"""
    name: str
    description: str | None = None
    trigger: dict = {}
    nodes: list[FlowNode]
    edges: list[FlowEdge]
    flow_mode: str = "chatflow"


class FlowDefinitionUpdate(BaseModel):
    """更新流程定义请求体。"""
    name: str | None = None
    description: str | None = None
    nodes: list[FlowNode] | None = None
    edges: list[FlowEdge] | None = None
    trigger: dict | None = None


class FlowDefinitionOut(BaseModel):
    """流程定义响应体。"""
    id: uuid.UUID
    name: str
    description: str | None = None
    version: int
    status: str
    definition_json: dict
    published_version_id: uuid.UUID | None = None
    published_to_wecom: bool
    published_to_web: bool = False
    flow_mode: str = "chatflow"
    created_at: datetime | None = None
    updated_at: datetime | None = None

    class Config:
        from_attributes = True


class FlowVersionOut(BaseModel):
    """流程版本响应体。"""
    id: uuid.UUID
    flow_id: uuid.UUID
    version: int
    definition_json: dict
    changelog: str = ""
    published_to_wecom: bool = False
    published_to_web: bool = False
    published_by: uuid.UUID | None = None
    created_at: datetime | None = None

    class Config:
        from_attributes = True


class FlowApiKeyCreate(BaseModel):
    """创建流程 API 密钥请求体。"""
    name: str


class FlowApiKeyOut(BaseModel):
    """流程 API 密钥响应体。"""
    id: uuid.UUID
    flow_id: uuid.UUID
    name: str
    key_prefix: str
    last_used_at: datetime | None = None
    created_at: datetime | None = None

    class Config:
        from_attributes = True


class FlowExecuteRequest(BaseModel):
    """流程执行请求体。"""
    input_text: str = ""
    session_id: str | None = None
    user_id: str | None = None


class FlowChatMessageRequest(BaseModel):
    """流程聊天消息请求体。"""
    query: str
    inputs: dict = {}
    response_mode: str = "blocking"
    user: str = ""
    session_id: str | None = None


class OpenAPIImportRequest(BaseModel):
    """OpenAPI 导入请求体。"""
    openapi_url: str
    base_url_override: str | None = None


class CustomToolCreate(BaseModel):
    """创建自定义工具请求体。"""
    model_config = ConfigDict(protected_namespaces=())
    name: str
    description: str | None = None
    openapi_url: str | None = None
    endpoint_url: str | None = None
    method: str = "GET"
    path: str = ""
    headers: dict = {}
    auth_type: str = "none"
    auth_config: dict = {}
    tool_schema: dict | None = None


class CustomToolUpdate(BaseModel):
    """更新自定义工具请求体。"""
    model_config = ConfigDict(protected_namespaces=())
    name: str | None = None
    description: str | None = None
    endpoint_url: str | None = None
    method: str | None = None
    path: str | None = None
    headers: dict | None = None
    auth_type: str | None = None
    auth_config: dict | None = None
    tool_schema: dict | None = None
    is_active: bool | None = None


class CustomToolOut(BaseModel):
    """自定义工具响应体（ORM 映射）。"""
    model_config = ConfigDict(from_attributes=True, populate_by_name=True, protected_namespaces=())
    id: uuid.UUID
    name: str
    description: str | None = None
    tool_schema: dict = Field(alias="schema_json")
    endpoint_url: str
    method: str
    path: str
    auth_type: str
    is_active: bool
    created_at: datetime | None = None


# --- MCP ---
class MCPServiceCreate(BaseModel):
    """创建 MCP 服务请求体。"""
    name: str
    transport: str = "http"
    url: str | None = None
    command: str | None = None
    args: list[str] = []
    env: dict[str, str] = {}


class MCPServiceUpdate(BaseModel):
    """更新 MCP 服务请求体。"""
    transport: str | None = None
    url: str | None = None
    command: str | None = None
    args: list[str] | None = None
    env: dict[str, str] | None = None


class MCPServiceOut(BaseModel):
    """MCP 服务响应体。"""
    id: uuid.UUID
    name: str
    transport: str
    url: str | None = None
    command: str | None = None
    status: str = "disconnected"
    tools: list[dict] = []
    creator_id: uuid.UUID | None = None
    created_at: datetime | None = None

    class Config:
        from_attributes = True


# --- Agent Config ---
class AgentConfigCreate(BaseModel):
    """创建 Agent 配置请求体。"""
    name: str
    description: str | None = None
    system_prompt: str = ""
    model: str = "gpt-4o-mini"
    temperature: float = 0.7
    tools: list[str] = []


class AgentConfigUpdate(BaseModel):
    """更新 Agent 配置请求体。"""
    name: str | None = None
    description: str | None = None
    system_prompt: str | None = None
    model: str | None = None
    temperature: float | None = None
    tools: list[str] | None = None
    status: str | None = None


class AgentConfigOut(BaseModel):
    """Agent 配置响应体。"""
    id: uuid.UUID
    name: str
    description: str | None = None
    system_prompt: str
    model: str
    temperature: float
    tools: list[str] = []
    status: str
    creator_id: uuid.UUID | None = None
    created_at: datetime | None = None
    updated_at: datetime | None = None

    class Config:
        from_attributes = True


# --- Notification ---
class NotificationTemplateCreate(BaseModel):
    """创建通知模板请求体。"""
    name: str
    code: str
    channel: str = "wecom"
    title_template: str | None = None
    body_template: str
    variables: list[str] = []


class NotificationTemplateOut(BaseModel):
    """通知模板响应体。"""
    id: uuid.UUID
    name: str
    code: str
    channel: str
    title_template: str | None = None
    body_template: str
    variables: list[str] = []
    is_system: bool = False

    class Config:
        from_attributes = True


# --- Document ---
class DocumentUploadOut(BaseModel):
    """文档上传结果响应体。"""
    file_id: uuid.UUID
    filename: str
    file_size: int
    content_type: str
    upload_time: datetime


class DocumentParseResult(BaseModel):
    """文档解析结果响应体。"""
    file_id: uuid.UUID
    filename: str
    content: str
    metadata: dict = {}


# --- Audit ---
class AuditQueryParams(BaseModel):
    """审计日志查询参数。"""
    page: int = 1
    page_size: int = 20
    action: str | None = None
    resource: str | None = None
    operator_id: uuid.UUID | None = None
    date_from: datetime | None = None
    date_to: datetime | None = None


class AuditLogOut(BaseModel):
    """审计日志条目响应体。"""
    id: uuid.UUID
    operator_id: uuid.UUID | None = None
    action: str
    resource: str | None = None
    resource_id: str | None = None
    detail: dict | None = None
    ip_address: str | None = None
    created_at: datetime | None = None

    class Config:
        from_attributes = True


class AuditLogPage(BaseModel):
    """审计日志分页响应体。"""
    items: list[AuditLogOut]
    total: int
    page: int
    page_size: int


# --- System Metrics ---
class SystemMetricOut(BaseModel):
    """系统监控指标响应体。"""
    id: uuid.UUID
    metric_type: str
    value: dict
    collected_at: datetime

    class Config:
        from_attributes = True


class SystemHealthOut(BaseModel):
    """系统健康状态响应体。"""
    status: str
    service: str
    uptime_seconds: float
    db_connected: bool
    redis_connected: bool
    active_users: int
    memory_mb: float
    cpu_percent: float


class UsageStatsOut(BaseModel):
    """使用统计响应体。"""
    total_users: int
    active_users_today: int
    total_sessions: int
    total_messages: int
    total_tasks: int
    total_flows: int
    published_flows: int
    api_calls_today: int
    avg_response_time_ms: float


# --- Generic Response ---
class ApiResponse(BaseModel):
    """通用 API 响应包装。"""
    code: int = 200
    message: str = "success"
    data: dict | list | None = None