"""
員工 Schemas
"""
from datetime import date, datetime
from typing import Optional, List
from pydantic import BaseModel, Field, EmailStr, ConfigDict

from app.schemas.base import BaseSchema, TimestampSchema
from app.models.employee import EmployeeStatus


class EmployeeBase(BaseSchema):
    """員工基礎 Schema"""

    username_base: str = Field(..., min_length=3, max_length=50, description="基礎帳號名稱 (全公司唯一)")
    legal_name: str = Field(..., min_length=2, max_length=100, description="法定姓名")
    english_name: Optional[str] = Field(None, max_length=100, description="英文名稱")
    phone: Optional[str] = Field(None, max_length=20, description="電話")
    mobile: Optional[str] = Field(None, max_length=20, description="手機")


class EmployeeCreate(EmployeeBase):
    """創建員工 Schema (多層部門架構: department_id 指向任何層部門)"""

    hire_date: date = Field(..., description="到職日期")

    # 組織資訊 (新多層部門架構)
    department_id: Optional[int] = Field(None, description="部門 ID (任何層級，選填)")
    job_title: str = Field(..., min_length=2, max_length=100, description="職稱")
    email_quota_mb: int = Field(5120, gt=0, description="郵件配額 (MB)，預設 5120")

    model_config = ConfigDict(
        json_schema_extra={
            "example": {
                "username_base": "porsche.chen",
                "legal_name": "陳保時",
                "english_name": "Porsche Chen",
                "phone": "02-1234-5678",
                "mobile": "0912-345-678",
                "hire_date": "2020-01-01",
                "department_id": 2,
                "job_title": "軟體工程師",
                "email_quota_mb": 5120
            }
        }
    )


class EmployeeUpdate(BaseSchema):
    """更新員工 Schema"""

    legal_name: Optional[str] = Field(None, min_length=2, max_length=100)
    english_name: Optional[str] = Field(None, max_length=100)
    phone: Optional[str] = Field(None, max_length=20)
    mobile: Optional[str] = Field(None, max_length=20)
    status: Optional[EmployeeStatus] = None


class EmployeeInDB(EmployeeBase, TimestampSchema):
    """資料庫中的員工 Schema"""

    id: int
    employee_id: str = Field(..., description="員工編號 (EMP001)")
    hire_date: date
    status: EmployeeStatus

    model_config = ConfigDict(from_attributes=True)


class EmployeeResponse(EmployeeInDB):
    """員工響應 Schema (多部門成員架構)"""

    has_network_drive: Optional[bool] = Field(None, description="是否有 NAS 帳號")
    department_count: Optional[int] = Field(None, description="所屬部門數量")

    model_config = ConfigDict(
        from_attributes=True,
        json_schema_extra={
            "example": {
                "id": 1,
                "employee_id": "EMP001",
                "username_base": "porsche.chen",
                "legal_name": "陳保時",
                "english_name": "Porsche Chen",
                "phone": "02-1234-5678",
                "mobile": "0912-345-678",
                "hire_date": "2020-01-01",
                "status": "active",
                "has_network_drive": True,
                "department_count": 2,
                "created_at": "2020-01-01T00:00:00",
                "updated_at": "2020-01-01T00:00:00"
            }
        }
    )


class EmployeeListItem(BaseSchema):
    """員工列表項 Schema (簡化版，多部門成員架構)"""

    id: int
    employee_id: str
    username_base: str
    legal_name: str
    english_name: Optional[str] = None
    status: EmployeeStatus
    hire_date: date

    # 主要部門資訊 (從 department_memberships 取得)
    primary_department: Optional[str] = Field(None, description="主要部門名稱")
    primary_job_title: Optional[str] = Field(None, description="職稱")

    model_config = ConfigDict(from_attributes=True)


class EmployeeDetail(EmployeeInDB):
    """員工詳情 Schema (包含完整關聯資料)"""

    # 將在後續添加 identities 和 network_drive
    pass