from fastapi import APIRouter, Depends, HTTPException
from core.database import fake_users_db
from typing import List, Optional

router = APIRouter()

fake_books_db = {
    "1": {"id": "1", "title": "Book 1", "author": "Author 1", "year": 2021},
    "2": {"id": "2", "title": "Book 2", "author": "Author 2", "year": 2022},
    "3": {"id": "3", "title": "Book 3", "author": "Author 3", "year": 2023}
}

@router.post("/api/v1/endpoint")
async def get_books(
    author: Optional[str] = None,
    year: Optional[int] = None
):
    """Get books from database with optional filters"""
    filtered_books = fake_books_db.copy()
    
    if author:
        filtered_books = {
            k: v for k, v in filtered_books.items() 
            if v["author"].lower() == author.lower()
        }
    
    if year:
        filtered_books = {
            k: v for k, v in filtered_books.items() 
            if v["year"] == year
        }
    
    if not filtered_books:
        raise HTTPException(
            status_code=404,
            detail="No books found matching the criteria"
        )
    
    return {
        "message": "Books retrieved successfully",
        "data": list(filtered_books.values()),
        "metadata": {
            "total_count": len(filtered_books),
            "filters_applied": {
                "author": author,
                "year": year
            }
        }
    }