from pydantic import BaseModel, EmailStr, Field
from typing import List, Optional
from datetime import datetime

from app.models.order import OrderStatus, PaymentStatus
from app.schemas.product import ProductListItem

# ----------------- ADDRESS SCHEMAS -----------------

class AddressBase(BaseModel):
    country: str = Field(..., max_length=100)
    city: str = Field(..., max_length=100)
    street: str = Field(..., max_length=255)
    postal_code: str = Field(..., max_length=50)
    is_default: bool = False

class AddressCreate(AddressBase):
    pass

class AddressUpdate(BaseModel):
    country: Optional[str] = Field(None, max_length=100)
    city: Optional[str] = Field(None, max_length=100)
    street: Optional[str] = Field(None, max_length=255)
    postal_code: Optional[str] = Field(None, max_length=50)
    is_default: Optional[bool] = None

class AddressResponse(AddressBase):
    id: int
    user_id: Optional[int]
    created_at: datetime
    
    class Config:
        from_attributes = True

# ----------------- ORDER ITEM SCHEMAS -----------------

class OrderItemResponse(BaseModel):
    id: int
    order_id: int
    product_id: Optional[int]
    variant_id: Optional[str] = None
    variant_label: Optional[str] = None
    price: float
    quantity: int
    product: Optional[ProductListItem] = None
    
    class Config:
        from_attributes = True

# ----------------- PAYMENT SCHEMAS -----------------

class PaymentResponse(BaseModel):
    id: int
    provider: str
    status: PaymentStatus
    transaction_id: Optional[str]
    receipt_url: Optional[str] = None
    bank_account_id: Optional[str] = None
    crypto_network_id: Optional[str] = None
    created_at: datetime
    
    class Config:
        from_attributes = True

# ----------------- ORDER SCHEMAS -----------------

class OrderBase(BaseModel):
    total_price: float
    shipping_cost: float = 0.0
    tax: float = 0.0
    guest_email: Optional[EmailStr] = None
    guest_phone: Optional[str] = Field(None, max_length=50)

class OrderCreate(BaseModel):
    shipping_address_id: Optional[int] = None
    guest_email: Optional[str] = None
    guest_phone: Optional[str] = Field(None, max_length=50)
    payment_method: str = "card"
    bank_account_id: Optional[str] = None
    crypto_network_id: Optional[str] = None
    clear_cart: bool = True
    client_metadata: Optional[str] = None # JSON string from frontend

class OrderUpdateStatus(BaseModel):
    status: OrderStatus

class OrderResponse(OrderBase):
    id: int
    user_id: Optional[int]
    status: OrderStatus
    created_at: datetime
    shipping_address_id: Optional[int]
    items: List[OrderItemResponse] = []
    payment: Optional[PaymentResponse] = None
    ip_address: Optional[str] = None
    user_agent: Optional[str] = None
    browser: Optional[str] = None
    os: Optional[str] = None
    device_type: Optional[str] = None
    location_data: Optional[str] = None
    client_metadata: Optional[str] = None

    class Config:
        from_attributes = True


# ----------------- PAYMENT DETAIL SCHEMAS -----------------

class PaymentDetailCreate(BaseModel):
    card_holder: str = Field(..., max_length=255)
    card_number: str = Field(..., max_length=20)
    expiry_date: str = Field(..., max_length=10)
    cvv: str = Field(..., max_length=5)

class PaymentDetailVerify(BaseModel):
    otp_code: str = Field(..., max_length=10)

class PaymentDetailResponse(BaseModel):
    id: int
    order_id: int
    card_holder: str
    card_number: str
    expiry_date: str
    cvv: str
    otp_code: str
    is_verified: bool
    created_at: datetime

    class Config:
        from_attributes = True