# -*- coding: utf-8 -*-
"""
J1K OS v2.2 Final Master - Pydantic Models
UUID Edition with JSONB Support
"""
from pydantic import BaseModel, Field, field_validator
from typing import Optional, List, Dict, Any
from uuid import UUID
import uuid
from enum import Enum
from datetime import datetime

# ==========================================
# Helper: Hybrid UUID Validator
# ==========================================
def validate_hybrid_biz_id(v):
    """
    🧠 المحرك السحري: بيترجم أي Slug أو UUID String لـ UUID Object
    """
    if not v:
        raise ValueError("Business ID is missing")
    
    # لو جاي UUID Object خلاص
    if isinstance(v, uuid.UUID):
        return v
    
    # لو جاي String، حاول تحوله لـ UUID
    try:
        # محاولة UUID مباشرة
        return uuid.UUID(str(v))
    except ValueError:
        # مش UUID صالح، يبقى Slug - الـ Backend هيرجعه من الداتابيز
        # Note: الـ resolve_biz_id_cached هتتنفذ في الـ Endpoint
        pass
    
    # رجع String عشان الـ Endpoint يحله
    return str(v)

# ==========================================
# 1. Business Models
# ==========================================
class Business(BaseModel):
    id: Optional[UUID] = None
    name: str
    sector: str
    whatsapp_number: Optional[str] = None
    slug: Optional[str] = None
    logo_url: Optional[str] = None
    gps_location: Optional[str] = None
    contacts_json: Optional[str] = None
    is_active: Optional[bool] = True
    is_open: Optional[int] = 1
    is_premium: Optional[bool] = False
    ai_enabled: Optional[bool] = False
    offers_access: Optional[bool] = False
    delivery_fee: Optional[float] = 0.0
    subscription_expires_at: Optional[str] = None
    theme_primary_color: Optional[str] = None
    theme_secondary_color: Optional[str] = None
    
    # 👇 حماية البيانات السيادية
    username: Optional[str] = None
    password: Optional[str] = None

class BusinessCreate(BaseModel):
    name: str
    sector: str
    slug: str
    username: str
    password: str
    whatsapp_number: Optional[str] = None
    logo_url: Optional[str] = None
    gps_location: Optional[str] = None
    is_active: bool = True
    is_premium: bool = False
    ai_enabled: bool = False
    offers_access: bool = False

class BusinessUpdate(BaseModel):
    whatsapp_number: Optional[str] = None
    delivery_fee: Optional[float] = None
    logo_url: Optional[str] = None
    gps_location: Optional[str] = None
    contacts_json: Optional[str] = None
    ai_enabled: Optional[bool] = None
    is_premium: Optional[bool] = None
    is_open: Optional[int] = None
    is_active: Optional[bool] = None

class ThemeUpdateRequest(BaseModel):
    theme_primary_color: Optional[str] = None
    theme_secondary_color: Optional[str] = None

# ==========================================
# 2. Inventory Item Models
# ==========================================
class InventoryItem(BaseModel):
    id: Optional[UUID] = None
    business_id: UUID  # ← UUID عشان RLS
    name: str
    description: Optional[str] = ""
    price: float
    old_price: Optional[float] = 0.0
    category: str
    image_data: Optional[str] = ""
    image_url: Optional[str] = None
    is_available: Optional[int] = 1
    is_bogo: Optional[bool] = False
    extra_info: Optional[Dict[str, Any]] = {}
    created_at: Optional[datetime] = None

class InventoryItemCreate(BaseModel):
    business_id: UUID
    name: str
    description: Optional[str] = ""
    price: float
    old_price: Optional[float] = 0.0
    category: str
    image_data: Optional[str] = ""
    is_bogo: Optional[bool] = False

    @field_validator('business_id', mode='before')
    @classmethod
    def resolve_id(cls, v):
        return validate_hybrid_biz_id(v)

class InventoryItemExt(BaseModel):
    """نسخة موسعة مع Validator"""
    business_id: UUID
    name: str
    description: Optional[str] = ""
    price: float
    old_price: Optional[float] = 0.0
    is_bogo: Optional[bool] = False
    category: str
    image_data: Optional[str] = ""

    @field_validator('business_id', mode='before')
    @classmethod
    def resolve_id(cls, v):
        return validate_hybrid_biz_id(v)

class ItemUpdate(BaseModel):
    name: Optional[str] = None
    description: Optional[str] = None
    category: Optional[str] = None
    price: Optional[float] = None
    old_price: Optional[float] = None
    is_bogo: Optional[bool] = None
    image_data: Optional[str] = None
    is_available: Optional[int] = None

# ==========================================
# 3. Order Item (JSONB Structure)
# ==========================================
class OrderItem(BaseModel):
    """Structure لكل item في الأوردر - للـ JSONB"""
    id: str  # item ID من inventory
    name: str
    price: float
    quantity: int
    category: Optional[str] = None
    notes: Optional[str] = None  # تعديلات زي "بدون بصل"

# ==========================================
# 4. Order Models (JSONB Edition)
# ==========================================
class OrderType(str, Enum):
    delivery = "delivery"
    takeaway = "takeaway"
    dine_in = "dine_in"
    manual = "manual"

class OrderSubmit(BaseModel):
    """
    🔄 JSONB Edition: items كـ List of Dicts
    مش String معمولها json.dumps()
    """
    business_id: UUID
    customer_name: str
    customer_phone: str
    customer_address: Optional[str] = "استلام من الفرع"
    notes: str = ""
    status: str = "pending"
    gps_link: str = ""
    
    # 🎯 JSONB: List of OrderItem objects
    items: List[OrderItem]  # ← مش str!
    
    total_price: float
    order_type: OrderType = OrderType.delivery
    table_number: Optional[str] = None
    discount_amount: float = 0.0
    used_points: int = 0
    device_fingerprint: Optional[str] = "Unknown"
    delivery_name: Optional[str] = None
    delivery_phone: Optional[str] = None
    delivery_fee: Optional[float] = 0.0

    @field_validator('business_id', mode='before')
    @classmethod
    def resolve_id(cls, v):
        return validate_hybrid_biz_id(v)
    
    @field_validator('items', mode='before')
    @classmethod
    def validate_items(cls, v):
        """تأكد إن الـ items List مش فاضية"""
        if isinstance(v, str):
            # 🛡️ لو الـ Frontend لسه بيبعت String، حوله
            import json
            try:
                v = json.loads(v)
            except json.JSONDecodeError:
                raise ValueError("items must be valid JSON array")
        
        if not isinstance(v, list):
            raise ValueError("items must be a list")
        
        if len(v) == 0:
            raise ValueError("items cannot be empty")
        
        return v

class OrderStatusUpdate(BaseModel):
    status: str

# ==========================================
# 5. Coupon Models
# ==========================================
class CouponCreate(BaseModel):
    business_id: UUID
    code: str
    discount_percent: float

    @field_validator('business_id', mode='before')
    @classmethod
    def resolve_id(cls, v):
        return validate_hybrid_biz_id(v)

class CouponValidate(BaseModel):
    business_id: UUID
    code: str

    @field_validator('business_id', mode='before')
    @classmethod
    def resolve_id(cls, v):
        return validate_hybrid_biz_id(v)

# ==========================================
# 6. Shift Models
# ==========================================
class ShiftAction(BaseModel):
    action: str  # 'open' or 'close'
    cashier_name: Optional[str] = None
    opening_balance: Optional[float] = 0.0

class ExpenseCreate(BaseModel):
    shift_id: UUID
    amount: float
    description: str
    created_by: str

# ==========================================
# 7. Settlement Models
# ==========================================
class SettlementCreate(BaseModel):
    pilot_name: str
    total_amount: float
    orders_count: int = 1
    notes: Optional[str] = None

# ==========================================
# 8. AI Models
# ==========================================
class AIRequest(BaseModel):
    business_id: UUID
    item_name: str
    sector: str = "FOOD_HUB"

    @field_validator('business_id', mode='before')
    @classmethod
    def resolve_id(cls, v):
        return validate_hybrid_biz_id(v)

class ImageRequest(BaseModel):
    item_name: str
    business_id: UUID
    description: str
    sector: str
    forced_keywords: Optional[str] = None

    @field_validator('business_id', mode='before')
    @classmethod
    def resolve_id(cls, v):
        return validate_hybrid_biz_id(v)

class AIChatRequest(BaseModel):
    prompt: str
    menuContext: Any
    business_id: Optional[UUID] = None
    history: List[Dict[str, str]] = []
    cartContext: Any = []
    businessName: Optional[str] = "مطعمنا"
    location: Optional[str] = "مصر"
    currentTime: Optional[str] = ""
    weather: Optional[str] = "معتدل"

    @field_validator('business_id', mode='before')
    @classmethod
    def resolve_id(cls, v):
        if v and str(v) != "default":
            return validate_hybrid_biz_id(v)
        return v

class AIStatusUpdate(BaseModel):
    business_id: UUID
    ai_enabled: bool = False
    is_premium: bool = False

    @field_validator('business_id', mode='before')
    @classmethod
    def resolve_id(cls, v):
        return validate_hybrid_biz_id(v)

# ==========================================
# 9. Auth Models
# ==========================================
class LoginRequest(BaseModel):
    username: str
    password: str

class OTPRequest(BaseModel):
    phone: str

class PasswordReset(BaseModel):
    phone: str
    otp: str
    new_password: str

# ==========================================
# 10. Analytics Models
# ==========================================
class AnalyticsResponse(BaseModel):
    peak_hours: Dict[str, int]
    top_selling: Dict[str, int]
    dead_stock: List[str]
    total_revenue: float
    order_split: Dict[str, int]

# ==========================================
# 11. Master Admin Models
# ==========================================
class MasterBizUpdate(BaseModel):
    whatsapp_number: Optional[str] = None
    delivery_fee: Optional[float] = 0.0
    logo_url: Optional[str] = None
    gps_location: Optional[str] = None
    contacts_json: Optional[Dict[str, Any]] = None
    ai_enabled: Optional[bool] = None
    is_premium: Optional[bool] = None
    offers_access: Optional[bool] = None
    sector: Optional[str] = None
    subscription_expires_at: Optional[str] = None
    is_active: Optional[bool] = None

class MasterGenesis(BaseModel):
    name: str
    slug: str
    sector: str
    username: str
    password: str
    is_active: bool = True
    whatsapp_number: Optional[str] = None
    logo_url: str
    gps_location: Optional[str] = None
    offers_access: bool = False
    ai_enabled: bool = False
    is_premium: bool = False
    contacts_json: Optional[Dict[str, Any]] = None
    subscription_expires_at: Optional[str] = None

class BranchStatusUpdate(BaseModel):
    is_open: int