# services/tenant/app/schemas/tenants.py
"""
Tenant schemas - FIXED VERSION
"""

from pydantic import BaseModel, Field, validator
from typing import Optional, List, Dict, Any
from datetime import datetime
from uuid import UUID
import re

class BakeryRegistration(BaseModel):
    """Bakery registration schema"""
    name: str = Field(..., min_length=2, max_length=200)
    address: str = Field(..., min_length=10, max_length=500)
    city: str = Field(default="Madrid", max_length=100)
    postal_code: str = Field(..., pattern=r"^\d{5}$")
    phone: str = Field(..., min_length=9, max_length=20)
    business_type: str = Field(default="bakery")
    business_model: Optional[str] = Field(default="individual_bakery")
    
    @validator('phone')
    def validate_spanish_phone(cls, v):
        """Validate Spanish phone number"""
        # Remove spaces and common separators
        phone = re.sub(r'[\s\-\(\)]', '', v)
        
        # Spanish mobile: +34 6/7/8/9 + 8 digits
        # Spanish landline: +34 9 + 8 digits
        patterns = [
            r'^(\+34|0034|34)?[6789]\d{8}$',  # Mobile
            r'^(\+34|0034|34)?9\d{8}$',       # Landline
        ]
        
        if not any(re.match(pattern, phone) for pattern in patterns):
            raise ValueError('Invalid Spanish phone number')
        return v
    
    @validator('business_type')
    def validate_business_type(cls, v):
        valid_types = ['bakery', 'coffee_shop', 'pastry_shop', 'restaurant']
        if v not in valid_types:
            raise ValueError(f'Business type must be one of: {valid_types}')
        return v
    
    @validator('business_model')
    def validate_business_model(cls, v):
        if v is None:
            return v
        valid_models = ['individual_bakery', 'central_baker_satellite', 'retail_bakery', 'hybrid_bakery']
        if v not in valid_models:
            raise ValueError(f'Business model must be one of: {valid_models}')
        return v

class TenantResponse(BaseModel):
    """Tenant response schema - FIXED VERSION"""
    id: str  # ✅ Keep as str for Pydantic validation
    name: str
    subdomain: Optional[str]
    business_type: str
    business_model: Optional[str]
    address: str
    city: str
    postal_code: str
    phone: Optional[str]
    is_active: bool
    subscription_tier: str
    model_trained: bool
    last_training_date: Optional[datetime]
    owner_id: str  # ✅ Keep as str for Pydantic validation
    created_at: datetime
    
    # ✅ FIX: Add custom validator to convert UUID to string
    @validator('id', 'owner_id', pre=True)
    def convert_uuid_to_string(cls, v):
        """Convert UUID objects to strings for JSON serialization"""
        if isinstance(v, UUID):
            return str(v)
        return v
    
    class Config:
        from_attributes = True

class TenantAccessResponse(BaseModel):
    """Tenant access verification response"""
    has_access: bool
    role: str
    permissions: List[str]

class TenantMemberResponse(BaseModel):
    """Tenant member response - FIXED VERSION"""
    id: str
    user_id: str
    role: str
    is_active: bool
    joined_at: Optional[datetime]
    
    # ✅ FIX: Add custom validator to convert UUID to string
    @validator('id', 'user_id', pre=True)
    def convert_uuid_to_string(cls, v):
        """Convert UUID objects to strings for JSON serialization"""
        if isinstance(v, UUID):
            return str(v)
        return v
    
    class Config:
        from_attributes = True
    
class TenantUpdate(BaseModel):
    """Tenant update schema"""
    name: Optional[str] = Field(None, min_length=2, max_length=200)
    address: Optional[str] = Field(None, min_length=10, max_length=500)
    phone: Optional[str] = None
    business_type: Optional[str] = None
    business_model: Optional[str] = None

class TenantListResponse(BaseModel):
    """Response schema for listing tenants"""
    tenants: List[TenantResponse]
    total: int
    page: int
    per_page: int
    has_next: bool
    has_prev: bool
    
class TenantMemberInvitation(BaseModel):
    """Schema for inviting a member to a tenant"""
    email: str = Field(..., pattern=r'^[^@]+@[^@]+\.[^@]+$')
    role: str = Field(..., pattern=r'^(admin|member|viewer)$')
    message: Optional[str] = Field(None, max_length=500)
    
class TenantMemberUpdate(BaseModel):
    """Schema for updating tenant member"""
    role: Optional[str] = Field(None, pattern=r'^(owner|admin|member|viewer)$')
    is_active: Optional[bool] = None

class TenantSubscriptionUpdate(BaseModel):
    """Schema for updating tenant subscription"""
    plan: str = Field(..., pattern=r'^(basic|professional|enterprise)$')
    billing_cycle: str = Field(default="monthly", pattern=r'^(monthly|yearly)$')

class TenantStatsResponse(BaseModel):
    """Tenant statistics response"""
    tenant_id: str
    total_members: int
    active_members: int
    total_predictions: int
    models_trained: int
    last_training_date: Optional[datetime]
    subscription_plan: str
    subscription_status: str
    
    @validator('tenant_id', pre=True)
    def convert_uuid_to_string(cls, v):
        """Convert UUID objects to strings for JSON serialization"""
        if isinstance(v, UUID):
            return str(v)
        return v

class TenantSearchRequest(BaseModel):
    """Tenant search request schema"""
    query: Optional[str] = None
    business_type: Optional[str] = None
    city: Optional[str] = None
    status: Optional[str] = None
    limit: int = Field(default=50, ge=1, le=100)
    offset: int = Field(default=0, ge=0)