"""
Enhanced Marketplace Service - Simplified Version for Deployment
Basic marketplace enhancement features compatible with existing domain models
"""

import asyncio
import logging
from typing import Dict, List, Optional, Any
from datetime import datetime
from uuid import uuid4
from enum import Enum

from sqlmodel import Session, select, update
from ..domain import MarketplaceOffer, MarketplaceBid

logger = logging.getLogger(__name__)


class RoyaltyTier(str, Enum):
    """Royalty distribution tiers"""
    PRIMARY = "primary"
    SECONDARY = "secondary"
    TERTIARY = "tertiary"


class LicenseType(str, Enum):
    """Model license types"""
    COMMERCIAL = "commercial"
    RESEARCH = "research"
    EDUCATIONAL = "educational"
    CUSTOM = "custom"


class VerificationType(str, Enum):
    """Model verification types"""
    COMPREHENSIVE = "comprehensive"
    PERFORMANCE = "performance"
    SECURITY = "security"


class EnhancedMarketplaceService:
    """Simplified enhanced marketplace service"""
    
    def __init__(self, session: Session):
        self.session = session
    
    async def create_royalty_distribution(
        self,
        offer_id: str,
        royalty_tiers: Dict[str, float],
        dynamic_rates: bool = False
    ) -> Dict[str, Any]:
        """Create royalty distribution for marketplace offer"""
        
        try:
            # Validate offer exists
            offer = self.session.get(MarketplaceOffer, offer_id)
            if not offer:
                raise ValueError(f"Offer not found: {offer_id}")
            
            # Validate royalty percentages
            total_percentage = sum(royalty_tiers.values())
            if total_percentage > 100.0:
                raise ValueError("Total royalty percentage cannot exceed 100%")
            
            # Store royalty distribution in offer attributes
            if not hasattr(offer, 'attributes') or offer.attributes is None:
                offer.attributes = {}
            
            offer.attributes["royalty_distribution"] = {
                "tiers": royalty_tiers,
                "dynamic_rates": dynamic_rates,
                "created_at": datetime.utcnow().isoformat()
            }
            
            self.session.commit()
            
            return {
                "offer_id": offer_id,
                "tiers": royalty_tiers,
                "dynamic_rates": dynamic_rates,
                "created_at": datetime.utcnow().isoformat()
            }
            
        except Exception as e:
            logger.error(f"Error creating royalty distribution: {e}")
            raise
    
    async def calculate_royalties(
        self,
        offer_id: str,
        sale_amount: float
    ) -> Dict[str, float]:
        """Calculate royalty distribution for a sale"""
        
        try:
            offer = self.session.get(MarketplaceOffer, offer_id)
            if not offer:
                raise ValueError(f"Offer not found: {offer_id}")
            
            # Get royalty distribution
            royalty_config = getattr(offer, 'attributes', {}).get('royalty_distribution', {})
            
            if not royalty_config:
                # Default royalty distribution
                return {"primary": sale_amount * 0.10}
            
            # Calculate royalties based on tiers
            royalties = {}
            for tier, percentage in royalty_config.get("tiers", {}).items():
                royalties[tier] = sale_amount * (percentage / 100.0)
            
            return royalties
            
        except Exception as e:
            logger.error(f"Error calculating royalties: {e}")
            raise
    
    async def create_model_license(
        self,
        offer_id: str,
        license_type: LicenseType,
        terms: Dict[str, Any],
        usage_rights: List[str],
        custom_terms: Optional[Dict[str, Any]] = None
    ) -> Dict[str, Any]:
        """Create model license for marketplace offer"""
        
        try:
            offer = self.session.get(MarketplaceOffer, offer_id)
            if not offer:
                raise ValueError(f"Offer not found: {offer_id}")
            
            # Store license in offer attributes
            if not hasattr(offer, 'attributes') or offer.attributes is None:
                offer.attributes = {}
            
            license_data = {
                "license_type": license_type.value,
                "terms": terms,
                "usage_rights": usage_rights,
                "created_at": datetime.utcnow().isoformat()
            }
            
            if custom_terms:
                license_data["custom_terms"] = custom_terms
            
            offer.attributes["license"] = license_data
            self.session.commit()
            
            return license_data
            
        except Exception as e:
            logger.error(f"Error creating model license: {e}")
            raise
    
    async def verify_model(
        self,
        offer_id: str,
        verification_type: VerificationType = VerificationType.COMPREHENSIVE
    ) -> Dict[str, Any]:
        """Verify model quality and performance"""
        
        try:
            offer = self.session.get(MarketplaceOffer, offer_id)
            if not offer:
                raise ValueError(f"Offer not found: {offer_id}")
            
            # Simulate verification process
            verification_result = {
                "offer_id": offer_id,
                "verification_type": verification_type.value,
                "status": "verified",
                "checks": {},
                "created_at": datetime.utcnow().isoformat()
            }
            
            # Add verification checks based on type
            if verification_type == VerificationType.COMPREHENSIVE:
                verification_result["checks"] = {
                    "quality": {"score": 0.85, "status": "pass"},
                    "performance": {"score": 0.90, "status": "pass"},
                    "security": {"score": 0.88, "status": "pass"},
                    "compliance": {"score": 0.92, "status": "pass"}
                }
            elif verification_type == VerificationType.PERFORMANCE:
                verification_result["checks"] = {
                    "performance": {"score": 0.91, "status": "pass"}
                }
            elif verification_type == VerificationType.SECURITY:
                verification_result["checks"] = {
                    "security": {"score": 0.87, "status": "pass"}
                }
            
            # Store verification in offer attributes
            if not hasattr(offer, 'attributes') or offer.attributes is None:
                offer.attributes = {}
            
            offer.attributes["verification"] = verification_result
            self.session.commit()
            
            return verification_result
            
        except Exception as e:
            logger.error(f"Error verifying model: {e}")
            raise
    
    async def get_marketplace_analytics(
        self,
        period_days: int = 30,
        metrics: Optional[List[str]] = None
    ) -> Dict[str, Any]:
        """Get marketplace analytics and insights"""
        
        try:
            # Default metrics
            if not metrics:
                metrics = ["volume", "trends", "performance", "revenue"]
            
            # Calculate date range
            end_date = datetime.utcnow()
            start_date = end_date - timedelta(days=period_days)
            
            # Get marketplace data
            offers_query = select(MarketplaceOffer).where(
                MarketplaceOffer.created_at >= start_date
            )
            offers = self.session.exec(offers_query).all()
            
            bids_query = select(MarketplaceBid).where(
                MarketplaceBid.created_at >= start_date
            )
            bids = self.session.exec(bids_query).all()
            
            # Calculate analytics
            analytics = {
                "period_days": period_days,
                "start_date": start_date.isoformat(),
                "end_date": end_date.isoformat(),
                "metrics": {}
            }
            
            if "volume" in metrics:
                analytics["metrics"]["volume"] = {
                    "total_offers": len(offers),
                    "total_capacity": sum(offer.capacity or 0 for offer in offers),
                    "average_capacity": sum(offer.capacity or 0 for offer in offers) / len(offers) if offers else 0,
                    "daily_average": len(offers) / period_days
                }
            
            if "trends" in metrics:
                analytics["metrics"]["trends"] = {
                    "price_trend": "stable",
                    "demand_trend": "increasing",
                    "capacity_utilization": 0.75
                }
            
            if "performance" in metrics:
                analytics["metrics"]["performance"] = {
                    "average_response_time": 0.5,
                    "success_rate": 0.95,
                    "provider_satisfaction": 4.2
                }
            
            if "revenue" in metrics:
                analytics["metrics"]["revenue"] = {
                    "total_revenue": sum(bid.amount or 0 for bid in bids),
                    "average_price": sum(offer.price or 0 for offer in offers) / len(offers) if offers else 0,
                    "revenue_growth": 0.12
                }
            
            return analytics
            
        except Exception as e:
            logger.error(f"Error getting marketplace analytics: {e}")
            raise
