from fastapi import APIRouter, Depends, HTTPException
from core.database import fake_users_db
import uuid

router = APIRouter()

@router.post("/books")
async def create_book(
    title: str,
    author: str,
    isbn: str = None,
    description: str = None
):
    """Create a new book entry"""
    book_id = str(uuid.uuid4())
    
    if isbn in [book.get('isbn') for book in fake_users_db.get('books', [])]:
        raise HTTPException(status_code=400, detail="Book with this ISBN already exists")
    
    new_book = {
        "id": book_id,
        "title": title,
        "author": author,
        "isbn": isbn,
        "description": description
    }
    
    if 'books' not in fake_users_db:
        fake_users_db['books'] = []
    
    fake_users_db['books'].append(new_book)
    
    return {
        "message": "Book created successfully",
        "book_id": book_id,
        "data": new_book,
        "metadata": {
            "timestamp": "demo_timestamp",
            "version": "1.0"
        }
    }