"""
租戶相關 Pydantic Schemas
"""
from datetime import datetime
from typing import Optional, List
from pydantic import BaseModel, Field, validator


class TenantBase(BaseModel):
    """租戶基本資料"""
    code: str = Field(..., min_length=2, max_length=50, description="租戶代碼")
    name: str = Field(..., min_length=1, max_length=200, description="公司名稱")
    name_eng: Optional[str] = Field(None, max_length=200, description="公司英文名稱")
    tax_id: Optional[str] = Field(None, max_length=20, description="統一編號")
    prefix: str = Field(..., min_length=1, max_length=10, description="員工編號前綴")
    tel: Optional[str] = Field(None, max_length=50, description="公司電話")
    add: Optional[str] = Field(None, max_length=500, description="公司地址")
    url: Optional[str] = Field(None, max_length=200, description="公司網站")
    plan_id: str = Field(default="starter", description="方案 ID")
    max_users: int = Field(default=5, ge=1, description="最大用戶數")
    storage_quota_gb: int = Field(default=100, ge=1, description="總儲存配額 (GB)")


class TenantCreateRequest(TenantBase):
    """建立租戶請求 (Superuser only)"""
    admin_username: str = Field(..., description="Tenant Admin 帳號")
    admin_email: str = Field(..., description="Tenant Admin 郵件")
    admin_name: str = Field(..., description="Tenant Admin 姓名")
    admin_temp_password: str = Field(..., min_length=8, description="Tenant Admin 臨時密碼")

    @validator('admin_email')
    def validate_email(cls, v):
        """驗證郵件格式"""
        if '@' not in v:
            raise ValueError('Invalid email format')
        return v

    @validator('tax_id')
    def validate_tax_id(cls, v):
        """驗證統一編號 (台灣 8 位數字)"""
        if v and (not v.isdigit() or len(v) != 8):
            raise ValueError('Tax ID must be 8 digits')
        return v


class TenantCreateResponse(BaseModel):
    """建立租戶回應"""
    message: str
    tenant: dict
    admin_user: dict
    keycloak_realm: str
    temporary_password: str  # 返回臨時密碼供管理員記錄

    class Config:
        from_attributes = True


class TenantUpdateRequest(BaseModel):
    """更新租戶請求"""
    name: Optional[str] = Field(None, min_length=1, max_length=200)
    name_eng: Optional[str] = Field(None, max_length=200)
    tax_id: Optional[str] = Field(None, max_length=20)
    tel: Optional[str] = Field(None, max_length=50)
    add: Optional[str] = Field(None, max_length=500)
    url: Optional[str] = Field(None, max_length=200)

    @validator('tax_id')
    def validate_tax_id(cls, v):
        """驗證統一編號"""
        if v and (not v.isdigit() or len(v) != 8):
            raise ValueError('Tax ID must be 8 digits')
        return v


class TenantUpdateResponse(BaseModel):
    """更新租戶回應"""
    message: str
    tenant: dict

    class Config:
        from_attributes = True


class TenantResponse(BaseModel):
    """租戶詳細資訊"""
    id: int
    code: str
    name: str
    name_eng: Optional[str]
    tax_id: Optional[str]
    prefix: str
    tel: Optional[str]
    add: Optional[str]
    url: Optional[str]
    keycloak_realm: Optional[str]
    plan_id: str
    max_users: int
    storage_quota_gb: int
    status: str
    is_sysmana: bool
    is_active: bool
    is_initialized: bool
    initialized_at: Optional[datetime]
    initialized_by: Optional[str]
    created_at: datetime
    updated_at: datetime

    class Config:
        from_attributes = True


class InitializationRequest(BaseModel):
    """租戶初始化請求 (Tenant Admin only)"""

    # Step 1: 公司基本資料 (可修改)
    company_info: dict = Field(..., description="公司基本資料")

    # Step 2: 部門結構
    departments: List[dict] = Field(..., description="部門列表")

    # Step 3: 系統角色
    roles: List[dict] = Field(..., description="角色列表")

    # Step 4: 預設配額與服務
    default_settings: dict = Field(..., description="預設配額與服務")


class InitializationResponse(BaseModel):
    """初始化完成回應"""
    message: str
    summary: dict

    class Config:
        from_attributes = True