"""Pydantic v2 request/response schemas."""
from datetime import datetime
from typing import Any, List, Optional
from uuid import UUID

from pydantic import BaseModel, ConfigDict, Field


class ORMModel(BaseModel):
    model_config = ConfigDict(from_attributes=True)


# ── auth ────────────────────────────────────────────────────────────────
class LoginRequest(BaseModel):
    email: str
    password: str


class TokenResponse(BaseModel):
    access_token: str
    token_type: str = "bearer"


class CustomerRegister(BaseModel):
    email: str
    name: Optional[str] = None
    shipping_addr: Optional[dict] = None
    # NOTE: customers table has no password column — password (if sent) is not
    # stored. Customer identity for MVP is email-only; TODO: add password column + hash.
    password: Optional[str] = None


# ── products ────────────────────────────────────────────────────────────
class ProductOut(ORMModel):
    id: UUID
    sku: str
    title: str
    description: Optional[str] = None
    category: Optional[str] = None
    brand: Optional[str] = None
    manufacturer: Optional[str] = None
    images: Any = None
    weight_grams: Optional[float] = None
    cost: float
    retail_price: Optional[float] = None
    min_price: Optional[float] = None
    max_price: Optional[float] = None
    status: str
    created_at: Optional[datetime] = None
    updated_at: Optional[datetime] = None


class ImportRequest(BaseModel):
    supplier_id: UUID
    feed_type: str = "csv"
    data_or_url: str = ""


class PriceHistoryOut(ORMModel):
    price: float
    reason: Optional[str] = None
    created_at: Optional[datetime] = None


# ── suppliers ───────────────────────────────────────────────────────────
class SupplierCreate(BaseModel):
    name: str
    adapter_type: str = "csv"
    api_endpoint: Optional[str] = None
    account_id: Optional[str] = None
    fulfillment_caps: dict = {}
    shipping_regions: List[str] = []
    reliability_score: float = 50.0
    status: str = "active"


class SupplierOut(ORMModel):
    id: UUID
    name: str
    adapter_type: str
    api_endpoint: Optional[str] = None
    fulfillment_caps: Any = None
    shipping_regions: Any = None
    reliability_score: float
    status: str
    created_at: Optional[datetime] = None


class SupplierPerformanceOut(BaseModel):
    supplier_id: UUID
    supplier_name: str
    fulfillment_rate: float
    avg_shipping_days: Optional[float] = None
    cancellation_rate: float
    stock_accuracy: float
    return_rate: float
    updated_at: Optional[datetime] = None


# ── customers ───────────────────────────────────────────────────────────
class CustomerOut(ORMModel):
    id: UUID
    email: str
    name: Optional[str] = None
    shipping_addr: Any = None
    created_at: Optional[datetime] = None


# ── orders ──────────────────────────────────────────────────────────────
class OrderItemIn(BaseModel):
    product_id: UUID
    qty: int = Field(ge=1)


class OrderCreate(BaseModel):
    customer_email: str
    items: List[OrderItemIn] = Field(min_length=1)


class OrderOut(ORMModel):
    id: UUID
    order_number: str
    customer_id: Optional[UUID] = None
    items: Any
    retail_total: float
    supplier_id: Optional[UUID] = None
    supplier_cost: float
    shipping_cost: float
    fees: float
    profit: float
    status: str
    tracking: Optional[str] = None
    carrier: Optional[str] = None
    btcpay_invoice_id: Optional[str] = None
    supplier_order_ref: Optional[str] = None
    created_at: Optional[datetime] = None
    updated_at: Optional[datetime] = None


class CustomerOrderOut(ORMModel):
    id: UUID
    order_number: str
    items: Any
    retail_total: float
    status: str
    tracking: Optional[str] = None
    carrier: Optional[str] = None
    created_at: Optional[datetime] = None
    updated_at: Optional[datetime] = None


class CheckoutResponse(BaseModel):
    order: OrderOut
    checkout_url: Optional[str] = None


class TrackingIn(BaseModel):
    tracking: str
    carrier: Optional[str] = None