#!/usr/bin/env python
# -*- coding: utf-8 -*-
"""
工作流 Schema 定义
"""
from datetime import datetime
from typing import Optional, List, Any

from pydantic import BaseModel, ConfigDict, Field

from app.base_schema import CSTDatetime


# ============ 流程定义 Schema ============

class WorkflowDefinitionCreate(BaseModel):
    """创建流程定义"""
    application_id: Optional[str] = Field(None, description="所属应用ID")
    name: str = Field(..., max_length=100, description="流程名称")
    code: str = Field(..., max_length=100, pattern=r"^[a-zA-Z][a-zA-Z0-9_]*$", description="流程编码（字母开头，只能包含字母、数字和下划线）")
    workflow_type: str = Field(default="other", max_length=20, description="流程类型: approval/application/business/hr/finance/admin/other")
    icon: str = Field(default="", max_length=100, description="流程图标")
    icon_bg_color: str = Field(default="", max_length=200, description="图标背景色(支持渐变色)")
    category: str = Field(default="", max_length=50, description="分类")
    description: str = Field(default="", description="描述")
    form_code: str = Field(..., max_length=100, description="关联表单编码")
    document_template_codes: List[str] = Field(default_factory=list, description="关联文档模板编码列表")
    flow_definition: dict = Field(default_factory=dict, description="流程定义")
    sort: int = Field(default=0, description="排序（数值越小越靠前）")


class WorkflowDefinitionUpdate(BaseModel):
    """更新流程定义"""
    name: Optional[str] = Field(None, max_length=100, description="流程名称")
    workflow_type: Optional[str] = Field(None, max_length=20, description="流程类型")
    icon: Optional[str] = Field(None, max_length=100, description="流程图标")
    icon_bg_color: Optional[str] = Field(None, max_length=200, description="图标背景色(支持渐变色)")
    category: Optional[str] = Field(None, max_length=50, description="分类")
    description: Optional[str] = Field(None, description="描述")
    form_code: Optional[str] = Field(None, max_length=100, description="关联表单编码")
    document_template_codes: Optional[List[str]] = Field(None, description="关联文档模板编码列表")
    flow_definition: Optional[dict] = Field(None, description="流程定义")
    sort: Optional[int] = Field(None, description="排序（数值越小越靠前）")


class WorkflowDefinitionOut(BaseModel):
    """流程定义输出"""
    id: str
    application_id: Optional[str] = None
    name: str
    code: str
    workflow_type: str = "other"
    icon: str = ""
    icon_bg_color: str = ""
    category: str
    description: str
    status: str
    version: int
    form_code: str
    form_name: str
    document_template_codes: List[str] = []
    flow_definition: dict
    created_at: Optional[CSTDatetime] = Field(None, alias="sys_create_datetime")
    updated_at: Optional[CSTDatetime] = Field(None, alias="sys_update_datetime")

    model_config = ConfigDict(from_attributes=True, populate_by_name=True)


class WorkflowDefinitionListOut(BaseModel):
    """流程定义列表输出"""
    id: str
    application_id: Optional[str] = None
    application_name: Optional[str] = ""
    name: str
    code: str
    workflow_type: str = "other"
    icon: str = ""
    icon_bg_color: str = ""
    category: str
    description: str
    status: str
    version: int
    form_code: str
    form_name: str
    sort: int = 0
    created_at: Optional[CSTDatetime] = Field(None, alias="sys_create_datetime")
    updated_at: Optional[CSTDatetime] = Field(None, alias="sys_update_datetime")

    model_config = ConfigDict(from_attributes=True, populate_by_name=True)


# ============ 导入导出 Schema ============

class WorkflowImportCheckIn(BaseModel):
    """流程导入预检查"""
    code: str = Field(..., description="流程编码")


class WorkflowImportCheckOut(BaseModel):
    """流程导入预检查结果"""
    code_exists: bool = Field(..., description="流程编码是否已存在")
    can_import: bool = Field(..., description="是否可以直接导入")


class WorkflowImportIn(BaseModel):
    """流程配置导入"""
    application_id: Optional[str] = Field(None, description="所属应用ID")
    name: str = Field(..., max_length=100, description="流程名称")
    code: str = Field(..., max_length=100, pattern=r"^[a-zA-Z][a-zA-Z0-9_]*$", description="流程编码")
    workflow_type: str = Field(default="other", max_length=20, description="流程类型")
    icon: str = Field(default="", max_length=100, description="流程图标")
    icon_bg_color: str = Field(default="", max_length=200, description="图标背景色")
    category: str = Field(default="", max_length=50, description="分类")
    description: str = Field(default="", description="描述")
    form_code: str = Field(..., max_length=100, description="关联表单编码")
    document_template_codes: List[str] = Field(default_factory=list, description="关联文档模板编码列表")
    flow_definition: dict = Field(default_factory=dict, description="流程定义")
    sort: int = Field(default=0, description="排序")


# ============ 流程实例 Schema ============

class WorkflowInstanceCreate(BaseModel):
    """发起流程"""
    workflow_code: str = Field(..., description="流程编码")
    title: str = Field(..., max_length=200, description="流程标题")
    form_data: dict = Field(..., description="表单数据")


class WorkflowInstanceOut(BaseModel):
    """流程实例输出"""
    id: str
    instance_no: str
    title: str
    status: str
    workflow_id: str
    workflow_name: str = ""
    workflow_code: str = ""
    form_code: str
    form_data_id: str
    current_node_id: str
    current_node_name: str
    initiator_id: str
    initiator_name: str = ""
    started_at: Optional[CSTDatetime] = None
    completed_at: Optional[CSTDatetime] = None
    has_document_templates: bool = False

    model_config = ConfigDict(from_attributes=True)


class WorkflowInstanceListOut(BaseModel):
    """流程实例列表输出"""
    id: str
    instance_no: str
    title: str
    status: str
    workflow_name: str = ""
    application_name: str = ""
    current_node_name: str
    has_document_templates: bool
    initiator_name: str = ""
    started_at: Optional[CSTDatetime] = None
    completed_at: Optional[CSTDatetime] = None

    model_config = ConfigDict(from_attributes=True)


# ============ 任务 Schema ============

class TaskApproveInput(BaseModel):
    """审批任务"""
    action: str = Field(..., description="操作: approve/reject/return")
    comment: str = Field(default="", description="审批意见")
    signature: Optional[str] = Field(None, description="签名数据（base64格式）")
    return_to: Optional[str] = Field(None, description="驳回目标: initiator(发起人) 或 节点ID")
    form_data: Optional[dict] = Field(None, description="修改后的表单数据（审批人编辑了可编辑字段时传入）")


class TaskHandleInput(BaseModel):
    """办理任务"""
    comment: str = Field(default="", description="办理意见")
    form_data: Optional[dict] = Field(None, description="修改后的表单数据（办理人编辑了可编辑字段时传入）")


class TaskReviseInput(BaseModel):
    """修改任务（驳回后重新提交）"""
    form_data: dict = Field(..., description="修改后的表单数据")
    comment: str = Field(default="", description="修改说明")


class TaskTransferInput(BaseModel):
    """转交任务"""
    to_user_id: str = Field(..., description="转交给用户ID")
    comment: str = Field(default="", description="转交说明")


class TaskDelegateInput(BaseModel):
    """委派任务"""
    to_user_id: str = Field(..., description="委派给用户ID")
    comment: str = Field(default="", description="委派说明")


class TaskAddSignInput(BaseModel):
    """加签任务"""
    sign_type: str = Field(..., description="加签类型: before(前加签)/after(后加签)/parallel(并行加签)")
    to_user_ids: List[str] = Field(..., description="加签人ID列表")
    comment: str = Field(default="", description="加签说明")


class WorkflowTaskOut(BaseModel):
    """任务输出"""
    id: str
    instance_id: str
    instance_no: str = ""
    instance_title: str = ""
    node_id: str
    node_name: str
    task_type: str
    status: str
    assignee_id: str
    assignee_name: str = ""
    comment: str
    signature_file_id: Optional[str] = None
    handled_at: Optional[CSTDatetime] = None
    sys_create_datetime: Optional[CSTDatetime] = None

    # 取消原因（or_sign=或签被他人审批自动取消, revoked=发起人撤回, 空=其他）
    cancel_reason: str = ""

    # 流程信息
    workflow_name: str = ""
    initiator_name: str = ""
    started_at: Optional[CSTDatetime] = None

    # 表单信息（任务详情时返回）
    form_code: Optional[str] = None
    form_config: Optional[dict] = None
    form_data: Optional[dict] = None
    form_permissions: Optional[list] = None
    action_permissions: Optional[list] = None
    require_signature: Optional[bool] = False
    last_return_log: Optional[dict] = None

    model_config = ConfigDict(from_attributes=True)


class WorkflowTaskListOut(BaseModel):
    """任务列表输出"""
    id: str
    instance_id: str
    instance_no: str = ""
    instance_title: str = ""
    instance_status: str = ""
    node_name: str
    task_type: str
    status: str
    assignee_id: str = ""
    assignee_name: str = ""
    workflow_name: str = ""
    initiator_name: str = ""
    started_at: Optional[CSTDatetime] = None
    sys_create_datetime: Optional[CSTDatetime] = None
    has_document_templates: bool = False
    # 超时相关字段
    timeout_at: Optional[CSTDatetime] = None
    timeout_action: str = ""
    is_timeout: bool = False
    # 流程图标
    workflow_icon: str = ""
    workflow_icon_bg_color: str = ""

    model_config = ConfigDict(from_attributes=True)


# ============ 日志 Schema ============

class WorkflowLogOut(BaseModel):
    """日志输出"""
    id: str
    node_id: str
    node_name: str
    action: str
    operator_id: str
    operator_name: str = ""
    comment: str
    extra_data: Optional[dict] = None
    sys_create_datetime: Optional[CSTDatetime] = None

    model_config = ConfigDict(from_attributes=True)


# ============ 通用 Schema ============

class MessageResponse(BaseModel):
    """消息响应"""
    message: str


class CountResponse(BaseModel):
    """计数响应"""
    count: int