from typing import Any, List

from fastapi import APIRouter, Depends, HTTPException, status
from sqlalchemy.ext.asyncio import AsyncSession

from app.core.database import get_db
from app.crud import user as crud_user
from app.schemas.user import User, UserUpdate
from app.api.deps import get_current_active_user, get_current_active_superuser

router = APIRouter()


@router.get("/users/me", response_model=User)
async def read_user_me(
    current_user: User = Depends(get_current_active_user),
) -> Any:
    """
    Get current user information.
    """
    return current_user


@router.put("/users/me", response_model=User)
async def update_user_me(
    user_in: UserUpdate,
    current_user: User = Depends(get_current_active_user),
    db: AsyncSession = Depends(get_db),
) -> Any:
    """
    Update own user information.
    """
    user = await crud_user.update(db, db_obj=current_user, obj_in=user_in)
    return user


@router.get("/users", response_model=List[User])
async def read_users(
    skip: int = 0,
    limit: int = 100,
    current_user: User = Depends(get_current_active_superuser),
    db: AsyncSession = Depends(get_db),
) -> Any:
    """
    Retrieve users. Only available to superusers.
    """
    users = await crud_user.get_users(db, skip=skip, limit=limit)
    return users


@router.get("/users/{user_id}", response_model=User)
async def read_user_by_id(
    user_id: str,
    current_user: User = Depends(get_current_active_user),
    db: AsyncSession = Depends(get_db),
) -> Any:
    """
    Get a specific user by id.
    """
    user = await crud_user.get_by_id(db, user_id=user_id)
    if user == current_user:
        return user
    if not current_user.is_superuser:
        raise HTTPException(
            status_code=status.HTTP_403_FORBIDDEN,
            detail="Not enough permissions to access this resource",
        )
    if not user:
        raise HTTPException(
            status_code=status.HTTP_404_NOT_FOUND,
            detail="User not found",
        )
    return user


@router.put("/users/{user_id}", response_model=User)
async def update_user(
    user_id: str,
    user_in: UserUpdate,
    current_user: User = Depends(get_current_active_superuser),
    db: AsyncSession = Depends(get_db),
) -> Any:
    """
    Update a user. Only available to superusers.
    """
    user = await crud_user.get_by_id(db, user_id=user_id)
    if not user:
        raise HTTPException(
            status_code=status.HTTP_404_NOT_FOUND,
            detail="User not found",
        )
    user = await crud_user.update(db, db_obj=user, obj_in=user_in)
    return user