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

router = APIRouter()

@router.get("/users/{id}")
async def get_user_handler(
    id: str = Path(..., description="User ID"),
    db: Session = Depends(get_db)
):
    """Get user by ID"""
    user = fake_users_db.get(id)
    if not user:
        raise HTTPException(status_code=404, detail="User not found")
    return {
        "message": "User found",
        "data": user,
        "metadata": {
            "source": "demo_db",
            "result_count": 1
        }
    }

@router.put("/users/{id}")
async def update_user_handler(
    id: str = Path(..., description="User ID"),
    username: str = Body(..., description="Updated username"),
    email: str = Body(..., description="Updated email"),
    password: str = Body(..., description="Updated password"),
    db: Session = Depends(get_db)
):
    """Update user by ID"""
    user = fake_users_db.get(id)
    if not user:
        raise HTTPException(status_code=404, detail="User not found")
    user["username"] = username
    user["email"] = email
    user["password"] = password
    return {
        "message": "User updated successfully",
        "data": user
    }

@router.delete("/users/{id}")
async def delete_user_handler(
    id: str = Path(..., description="User ID"),
    db: Session = Depends(get_db)
):
    """Delete user by ID"""
    user = fake_users_db.pop(id, None)
    if not user:
        raise HTTPException(status_code=404, detail="User not found")
    return {
        "message": "User deleted successfully",
        "data": user
    }

@router.get("/users")
async def get_all_users_handler(
    db: Session = Depends(get_db)
):
    """Get all users"""
    users = list(fake_users_db.values())
    return {
        "message": "Users retrieved successfully",
        "data": users,
        "metadata": {
            "source": "demo_db",
            "result_count": len(users)
        }
    }