"""审批流程 Pydantic Schemas。"""
from typing import List, Optional
from pydantic import BaseModel, ConfigDict
from datetime import datetime


class WorkflowStepCreate(BaseModel):
    step_number: int
    name: str
    step_type: str = "serial"  # serial / parallel / any_one
    approver_role: Optional[str] = None
    approver_ids: Optional[str] = None  # JSON list
    is_required: bool = True
    timeout_hours: int = 24
    auto_approve_on_timeout: bool = False


class WorkflowStepResponse(WorkflowStepCreate):
    id: int
    workflow_id: int

    model_config = ConfigDict(from_attributes=True)


class WorkflowCreate(BaseModel):
    name: str
    description: Optional[str] = None
    is_default: bool = False
    steps: List[WorkflowStepCreate]


class WorkflowUpdate(BaseModel):
    name: Optional[str] = None
    description: Optional[str] = None
    is_active: Optional[bool] = None
    steps: Optional[List[WorkflowStepCreate]] = None


class WorkflowResponse(BaseModel):
    id: int
    name: str
    description: Optional[str]
    is_default: bool
    is_active: bool
    created_at: Optional[datetime]
    steps: List[WorkflowStepResponse]

    model_config = ConfigDict(from_attributes=True)


class TicketApprovalResponse(BaseModel):
    id: int
    ticket_id: int
    step_number: int
    step_name: Optional[str]
    approver_id: Optional[int]
    approver_role: Optional[str]
    approver_name: Optional[str] = None
    action: str
    comment: Optional[str]
    created_at: Optional[datetime]
    updated_at: Optional[datetime]


class ApprovalProgressResponse(BaseModel):
    ticket_id: int
    current_step: int
    total_steps: int
    status: str
    steps: List[dict]


class ApprovalActionRequest(BaseModel):
    comment: Optional[str] = ""


class TransferRequest(BaseModel):
    to_user_id: int
    comment: Optional[str] = ""