from fastapi import Response, Request
from fastapi import Depends, FastAPI, HTTPException, status
from datetime import datetime, timedelta
from typing import List, Union, Optional

from fastapi import APIRouter
from pydantic import BaseModel
import time
import uuid
import logging

from apps.webui.models.users import (
    UserModel,
    UserUpdateForm,
    UserRoleUpdateForm,
    UserSettings,
    Users,
)
from apps.webui.models.auths import Auths
from apps.webui.models.chats import Chats

from utils.utils import (
    get_verified_user,
    get_password_hash,
    get_current_user,
    get_admin_user,
)
from constants import ERROR_MESSAGES

from config import SRC_LOG_LEVELS

log = logging.getLogger(__name__)
log.setLevel(SRC_LOG_LEVELS["MODELS"])

router = APIRouter()

############################
# GetUsers
############################


@router.get("/", response_model=List[UserModel])
async def get_users(skip: int = 0, limit: int = 50, user=Depends(get_admin_user)):
    return Users.get_users(skip, limit)


############################
# User Permissions
############################


@router.get("/permissions/user")
async def get_user_permissions(request: Request, user=Depends(get_admin_user)):
    return request.app.state.config.USER_PERMISSIONS


@router.post("/permissions/user")
async def update_user_permissions(
    request: Request, form_data: dict, user=Depends(get_admin_user)
):
    request.app.state.config.USER_PERMISSIONS = form_data
    return request.app.state.config.USER_PERMISSIONS


############################
# UpdateUserRole
############################


@router.post("/update/role", response_model=Optional[UserModel])
async def update_user_role(form_data: UserRoleUpdateForm, user=Depends(get_admin_user)):

    if user.id != form_data.id and form_data.id != Users.get_first_user().id:
        return Users.update_user_role_by_id(form_data.id, form_data.role)

    raise HTTPException(
        status_code=status.HTTP_403_FORBIDDEN,
        detail=ERROR_MESSAGES.ACTION_PROHIBITED,
    )


############################
# GetUserSettingsBySessionUser
############################


@router.get("/user/settings", response_model=Optional[UserSettings])
async def get_user_settings_by_session_user(user=Depends(get_verified_user)):
    user = Users.get_user_by_id(user.id)
    if user:
        return user.settings
    else:
        raise HTTPException(
            status_code=status.HTTP_400_BAD_REQUEST,
            detail=ERROR_MESSAGES.USER_NOT_FOUND,
        )


############################
# UpdateUserSettingsBySessionUser
############################


@router.post("/user/settings/update", response_model=UserSettings)
async def update_user_settings_by_session_user(
    form_data: UserSettings, user=Depends(get_verified_user)
):
    user = Users.update_user_by_id(user.id, {"settings": form_data.model_dump()})
    if user:
        return user.settings
    else:
        raise HTTPException(
            status_code=status.HTTP_400_BAD_REQUEST,
            detail=ERROR_MESSAGES.USER_NOT_FOUND,
        )


############################
# GetUserInfoBySessionUser
############################


@router.get("/user/info", response_model=Optional[dict])
async def get_user_info_by_session_user(user=Depends(get_verified_user)):
    user = Users.get_user_by_id(user.id)
    if user:
        return user.info
    else:
        raise HTTPException(
            status_code=status.HTTP_400_BAD_REQUEST,
            detail=ERROR_MESSAGES.USER_NOT_FOUND,
        )


############################
# UpdateUserInfoBySessionUser
############################


@router.post("/user/info/update", response_model=Optional[dict])
async def update_user_info_by_session_user(
    form_data: dict, user=Depends(get_verified_user)
):
    user = Users.get_user_by_id(user.id)
    if user:
        if user.info is None:
            user.info = {}

        user = Users.update_user_by_id(user.id, {"info": {**user.info, **form_data}})
        if user:
            return user.info
        else:
            raise HTTPException(
                status_code=status.HTTP_400_BAD_REQUEST,
                detail=ERROR_MESSAGES.USER_NOT_FOUND,
            )
    else:
        raise HTTPException(
            status_code=status.HTTP_400_BAD_REQUEST,
            detail=ERROR_MESSAGES.USER_NOT_FOUND,
        )


############################
# GetUserById
############################


class UserResponse(BaseModel):
    name: str
    profile_image_url: str


@router.get("/{user_id}", response_model=UserResponse)
async def get_user_by_id(user_id: str, user=Depends(get_verified_user)):

    # Check if user_id is a shared chat
    # If it is, get the user_id from the chat
    if user_id.startswith("shared-"):
        chat_id = user_id.replace("shared-", "")
        chat = Chats.get_chat_by_id(chat_id)
        if chat:
            user_id = chat.user_id
        else:
            raise HTTPException(
                status_code=status.HTTP_400_BAD_REQUEST,
                detail=ERROR_MESSAGES.USER_NOT_FOUND,
            )

    user = Users.get_user_by_id(user_id)

    if user:
        return UserResponse(name=user.name, profile_image_url=user.profile_image_url)
    else:
        raise HTTPException(
            status_code=status.HTTP_400_BAD_REQUEST,
            detail=ERROR_MESSAGES.USER_NOT_FOUND,
        )


############################
# UpdateUserById
############################


@router.post("/{user_id}/update", response_model=Optional[UserModel])
async def update_user_by_id(
    user_id: str,
    form_data: UserUpdateForm,
    session_user=Depends(get_admin_user),
):
    user = Users.get_user_by_id(user_id)

    if user:
        if form_data.email.lower() != user.email:
            email_user = Users.get_user_by_email(form_data.email.lower())
            if email_user:
                raise HTTPException(
                    status_code=status.HTTP_400_BAD_REQUEST,
                    detail=ERROR_MESSAGES.EMAIL_TAKEN,
                )

        if form_data.password:
            hashed = get_password_hash(form_data.password)
            log.debug(f"hashed: {hashed}")
            Auths.update_user_password_by_id(user_id, hashed)

        Auths.update_email_by_id(user_id, form_data.email.lower())
        updated_user = Users.update_user_by_id(
            user_id,
            {
                "name": form_data.name,
                "email": form_data.email.lower(),
                "profile_image_url": form_data.profile_image_url,
            },
        )

        if updated_user:
            return updated_user

        raise HTTPException(
            status_code=status.HTTP_400_BAD_REQUEST,
            detail=ERROR_MESSAGES.DEFAULT(),
        )

    raise HTTPException(
        status_code=status.HTTP_400_BAD_REQUEST,
        detail=ERROR_MESSAGES.USER_NOT_FOUND,
    )


############################
# DeleteUserById
############################


@router.delete("/{user_id}", response_model=bool)
async def delete_user_by_id(user_id: str, user=Depends(get_admin_user)):
    if user.id != user_id:
        result = Auths.delete_auth_by_id(user_id)

        if result:
            return True

        raise HTTPException(
            status_code=status.HTTP_500_INTERNAL_SERVER_ERROR,
            detail=ERROR_MESSAGES.DELETE_USER_ERROR,
        )

    raise HTTPException(
        status_code=status.HTTP_403_FORBIDDEN,
        detail=ERROR_MESSAGES.ACTION_PROHIBITED,
    )