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

router = APIRouter()

@router.post("/login")
async def login_handler(
    username: str = "demo",
    password: str = "password"
):
    """Add predefined users and authenticate"""
    # Add predefined users if they don't exist
    if "Chidi" not in fake_users_db:
        fake_users_db["Chidi"] = {
            "id": str(uuid.uuid4()),
            "email": "chidi@example.com",
            "password": "chidi_password",
            "disabled": False
        }
    
    if "Nneoma" not in fake_users_db:
        fake_users_db["Nneoma"] = {
            "id": str(uuid.uuid4()),
            "email": "nneoma@example.com",
            "password": "nneoma_password",
            "disabled": False
        }

    user = fake_users_db.get(username)
    if not user or user["password"] != password:
        raise HTTPException(status_code=400, detail="Invalid credentials")
    
    return {
        "message": "Login successful (demo)",
        "user": username,
        "token": "dummy_jwt_token_123",
        "features": {
            "rate_limit": 100,
            "expires_in": 3600
        },
        "available_users": ["Chidi", "Nneoma"]
    }