"""缺料审批 Schema

核心原则：
- 所有写操作仅在 pms_db 中进行
- 绝对禁止对 inventory_db 进行任何写操作
- 物料信息仅从 inventory_db 查询获取，不进行写操作
"""
from pydantic import BaseModel, Field
from datetime import datetime
from app.models.production import ApprovalStatus


class ApprovalCreate(BaseModel):
    """创建缺料审批申请"""
    work_order_id: int = Field(..., description="工单ID")
    missing_material_id: int = Field(..., description="缺失物料ID")
    required_qty: int = Field(gt=0, description="需要补充的数量")
    reason: str | None = Field(None, max_length=500, description="申请原因")


class ApprovalStatusUpdate(BaseModel):
    """审批状态更新"""
    status: ApprovalStatus = Field(
        ...,
        description="新状态（APPROVED 或 REJECTED）"
    )


class ApprovalResponse(BaseModel):
    """基础缺料审批响应"""
    id: int
    work_order_id: int
    missing_material_id: int
    required_qty: int
    reason: str | None
    status: ApprovalStatus
    created_at: datetime

    class Config:
        from_attributes = True


class ApprovalDetailResponse(BaseModel):
    """带详情的缺料审批响应

    包含：
    - 工单编号
    - 物料名称
    - 其他基本信息
    """
    id: int
    work_order_id: int
    work_order_no: str = Field(..., description="工单编号")
    missing_material_id: int
    material_name: str = Field(..., description="物料名称")
    required_qty: int
    reason: str | None
    status: ApprovalStatus
    created_at: datetime

    class Config:
        from_attributes = True