# app/api/v1/stats.py
"""
Statistics endpoints - simplified with service-level exception handling.

This module provides classes and functions for:
- Comprehensive system statistics
- Marketplace-specific analytics
- Performance metrics and data insights
"""

import logging
from typing import List

from fastapi import APIRouter, Depends
from sqlalchemy.orm import Session

from app.api.deps import get_current_user
from app.core.database import get_db
from app.services.stats_service import stats_service
from models.schemas.stats import MarketplaceStatsResponse, StatsResponse
from models.database.user import User

router = APIRouter()
logger = logging.getLogger(__name__)


@router.get("/stats", response_model=StatsResponse)
def get_stats(
    db: Session = Depends(get_db), current_user: User = Depends(get_current_user)
):
    """Get comprehensive statistics with marketplace data (Protected)."""
    stats_data = stats_service.get_comprehensive_stats(db=db)

    return StatsResponse(
        total_products=stats_data["total_products"],
        unique_brands=stats_data["unique_brands"],
        unique_categories=stats_data["unique_categories"],
        unique_marketplaces=stats_data["unique_marketplaces"],
        unique_shops=stats_data["unique_shops"],
        total_stock_entries=stats_data["total_stock_entries"],
        total_inventory_quantity=stats_data["total_inventory_quantity"],
    )


@router.get("/stats/marketplace", response_model=List[MarketplaceStatsResponse])
def get_marketplace_stats(
    db: Session = Depends(get_db), current_user: User = Depends(get_current_user)
):
    """Get statistics broken down by marketplace (Protected)."""
    marketplace_stats = stats_service.get_marketplace_breakdown_stats(db=db)

# app/api/v1/stats.py
"""
Statistics endpoints - simplified with service-level exception handling.

This module provides classes and functions for:
- Comprehensive system statistics
- Marketplace-specific analytics
- Performance metrics and data insights
"""

import logging
from typing import List

from fastapi import APIRouter, Depends
from sqlalchemy.orm import Session

from app.api.deps import get_current_user
from app.core.database import get_db
from app.services.stats_service import stats_service
from models.schemas.stats import MarketplaceStatsResponse, StatsResponse
from models.database.user import User

router = APIRouter()
logger = logging.getLogger(__name__)


@router.get("/stats", response_model=StatsResponse)
def get_stats(
    db: Session = Depends(get_db), current_user: User = Depends(get_current_user)
):
    """Get comprehensive statistics with marketplace data (Protected)."""
    stats_data = stats_service.get_comprehensive_stats(db=db)

    return StatsResponse(
        total_products=stats_data["total_products"],
        unique_brands=stats_data["unique_brands"],
        unique_categories=stats_data["unique_categories"],
        unique_marketplaces=stats_data["unique_marketplaces"],
        unique_shops=stats_data["unique_shops"],
        total_stock_entries=stats_data["total_stock_entries"],
        total_inventory_quantity=stats_data["total_inventory_quantity"],
    )


@router.get("/stats/marketplace", response_model=List[MarketplaceStatsResponse])
def get_marketplace_stats(
    db: Session = Depends(get_db), current_user: User = Depends(get_current_user)
):
    """Get statistics broken down by marketplace (Protected)."""
    marketplace_stats = stats_service.get_marketplace_breakdown_stats(db=db)

    return [
        MarketplaceStatsResponse(
            marketplace=stat["marketplace"],
            total_products=stat["total_products"],
            unique_shops=stat["unique_shops"],
            unique_brands=stat["unique_brands"],
        )
        for stat in marketplace_stats
    ]