import logging

from fastapi import Request, UploadFile, File
from fastapi import Depends, HTTPException, status

from fastapi import APIRouter
from pydantic import BaseModel
import re
import uuid
import csv


from apps.webui.models.auths import (
    SigninForm,
    SignupForm,
    AddUserForm,
    UpdateProfileForm,
    UpdatePasswordForm,
    UserResponse,
    SigninResponse,
    Auths,
    ApiKey,
)
from apps.webui.models.users import Users

from utils.utils import (
    get_password_hash,
    get_current_user,
    get_admin_user,
    create_token,
    create_api_key,
)
from utils.misc import parse_duration, validate_email_format
from utils.webhook import post_webhook
from constants import ERROR_MESSAGES, WEBHOOK_MESSAGES
from config import (
    WEBUI_AUTH,
    WEBUI_AUTH_TRUSTED_EMAIL_HEADER,
    WEBUI_AUTH_TRUSTED_NAME_HEADER,
)

router = APIRouter()

############################
# GetSessionUser
############################


@router.get("/", response_model=UserResponse)
async def get_session_user(user=Depends(get_current_user)):
    return {
        "id": user.id,
        "email": user.email,
        "name": user.name,
        "role": user.role,
        "profile_image_url": user.profile_image_url,
    }


############################
# Update Profile
############################


@router.post("/update/profile", response_model=UserResponse)
async def update_profile(
    form_data: UpdateProfileForm, session_user=Depends(get_current_user)
):
    if session_user:
        user = Users.update_user_by_id(
            session_user.id,
            {"profile_image_url": form_data.profile_image_url, "name": form_data.name},
        )
        if user:
            return user
        else:
            raise HTTPException(400, detail=ERROR_MESSAGES.DEFAULT())
    else:
        raise HTTPException(400, detail=ERROR_MESSAGES.INVALID_CRED)


############################
# Update Password
############################


@router.post("/update/password", response_model=bool)
async def update_password(
    form_data: UpdatePasswordForm, session_user=Depends(get_current_user)
):
    if WEBUI_AUTH_TRUSTED_EMAIL_HEADER:
        raise HTTPException(400, detail=ERROR_MESSAGES.ACTION_PROHIBITED)
    if session_user:
        user = Auths.authenticate_user(session_user.email, form_data.password)

        if user:
            hashed = get_password_hash(form_data.new_password)
            return Auths.update_user_password_by_id(user.id, hashed)
        else:
            raise HTTPException(400, detail=ERROR_MESSAGES.INVALID_PASSWORD)
    else:
        raise HTTPException(400, detail=ERROR_MESSAGES.INVALID_CRED)


############################
# SignIn
############################


@router.post("/signin", response_model=SigninResponse)
async def signin(request: Request, form_data: SigninForm):
    if WEBUI_AUTH_TRUSTED_EMAIL_HEADER:
        if WEBUI_AUTH_TRUSTED_EMAIL_HEADER not in request.headers:
            raise HTTPException(400, detail=ERROR_MESSAGES.INVALID_TRUSTED_HEADER)

        trusted_email = request.headers[WEBUI_AUTH_TRUSTED_EMAIL_HEADER].lower()
        trusted_name = trusted_email
        if WEBUI_AUTH_TRUSTED_NAME_HEADER:
            trusted_name = request.headers.get(
                WEBUI_AUTH_TRUSTED_NAME_HEADER, trusted_email
            )
        if not Users.get_user_by_email(trusted_email.lower()):
            await signup(
                request,
                SignupForm(
                    email=trusted_email, password=str(uuid.uuid4()), name=trusted_name
                ),
            )
        user = Auths.authenticate_user_by_trusted_header(trusted_email)
    elif WEBUI_AUTH == False:
        admin_email = "admin@localhost"
        admin_password = "admin"

        if Users.get_user_by_email(admin_email.lower()):
            user = Auths.authenticate_user(admin_email.lower(), admin_password)
        else:
            if Users.get_num_users() != 0:
                raise HTTPException(400, detail=ERROR_MESSAGES.EXISTING_USERS)

            await signup(
                request,
                SignupForm(email=admin_email, password=admin_password, name="User"),
            )

            user = Auths.authenticate_user(admin_email.lower(), admin_password)
    else:
        user = Auths.authenticate_user(form_data.email.lower(), form_data.password)

    if user:
        token = create_token(
            data={"id": user.id},
            expires_delta=parse_duration(request.app.state.config.JWT_EXPIRES_IN),
        )

        return {
            "token": token,
            "token_type": "Bearer",
            "id": user.id,
            "email": user.email,
            "name": user.name,
            "role": user.role,
            "profile_image_url": user.profile_image_url,
        }
    else:
        raise HTTPException(400, detail=ERROR_MESSAGES.INVALID_CRED)


############################
# SignUp
############################


@router.post("/signup", response_model=SigninResponse)
async def signup(request: Request, form_data: SignupForm):
    if not request.app.state.config.ENABLE_SIGNUP and WEBUI_AUTH:
        raise HTTPException(
            status.HTTP_403_FORBIDDEN, detail=ERROR_MESSAGES.ACCESS_PROHIBITED
        )

    if not validate_email_format(form_data.email.lower()):
        raise HTTPException(
            status.HTTP_400_BAD_REQUEST, detail=ERROR_MESSAGES.INVALID_EMAIL_FORMAT
        )

    if Users.get_user_by_email(form_data.email.lower()):
        raise HTTPException(400, detail=ERROR_MESSAGES.EMAIL_TAKEN)

    try:
        role = (
            "admin"
            if Users.get_num_users() == 0
            else request.app.state.config.DEFAULT_USER_ROLE
        )
        hashed = get_password_hash(form_data.password)
        user = Auths.insert_new_auth(
            form_data.email.lower(),
            hashed,
            form_data.name,
            form_data.profile_image_url,
            role,
        )

        if user:
            token = create_token(
                data={"id": user.id},
                expires_delta=parse_duration(request.app.state.config.JWT_EXPIRES_IN),
            )
            # response.set_cookie(key='token', value=token, httponly=True)

            if request.app.state.config.WEBHOOK_URL:
                post_webhook(
                    request.app.state.config.WEBHOOK_URL,
                    WEBHOOK_MESSAGES.USER_SIGNUP(user.name),
                    {
                        "action": "signup",
                        "message": WEBHOOK_MESSAGES.USER_SIGNUP(user.name),
                        "user": user.model_dump_json(exclude_none=True),
                    },
                )

            return {
                "token": token,
                "token_type": "Bearer",
                "id": user.id,
                "email": user.email,
                "name": user.name,
                "role": user.role,
                "profile_image_url": user.profile_image_url,
            }
        else:
            raise HTTPException(500, detail=ERROR_MESSAGES.CREATE_USER_ERROR)
    except Exception as err:
        raise HTTPException(500, detail=ERROR_MESSAGES.DEFAULT(err))


############################
# AddUser
############################


@router.post("/add", response_model=SigninResponse)
async def add_user(form_data: AddUserForm, user=Depends(get_admin_user)):

    if not validate_email_format(form_data.email.lower()):
        raise HTTPException(
            status.HTTP_400_BAD_REQUEST, detail=ERROR_MESSAGES.INVALID_EMAIL_FORMAT
        )

    if Users.get_user_by_email(form_data.email.lower()):
        raise HTTPException(400, detail=ERROR_MESSAGES.EMAIL_TAKEN)

    try:

        print(form_data)
        hashed = get_password_hash(form_data.password)
        user = Auths.insert_new_auth(
            form_data.email.lower(),
            hashed,
            form_data.name,
            form_data.profile_image_url,
            form_data.role,
        )

        if user:
            token = create_token(data={"id": user.id})
            return {
                "token": token,
                "token_type": "Bearer",
                "id": user.id,
                "email": user.email,
                "name": user.name,
                "role": user.role,
                "profile_image_url": user.profile_image_url,
            }
        else:
            raise HTTPException(500, detail=ERROR_MESSAGES.CREATE_USER_ERROR)
    except Exception as err:
        raise HTTPException(500, detail=ERROR_MESSAGES.DEFAULT(err))


############################
# GetAdminDetails
############################


@router.get("/admin/details")
async def get_admin_details(request: Request, user=Depends(get_current_user)):
    if request.app.state.config.SHOW_ADMIN_DETAILS:
        admin_email = request.app.state.config.ADMIN_EMAIL
        admin_name = None

        print(admin_email, admin_name)

        if admin_email:
            admin = Users.get_user_by_email(admin_email)
            if admin:
                admin_name = admin.name
        else:
            admin = Users.get_first_user()
            if admin:
                admin_email = admin.email
                admin_name = admin.name

        return {
            "name": admin_name,
            "email": admin_email,
        }
    else:
        raise HTTPException(400, detail=ERROR_MESSAGES.ACTION_PROHIBITED)


############################
# ToggleSignUp
############################


@router.get("/admin/config")
async def get_admin_config(request: Request, user=Depends(get_admin_user)):
    return {
        "SHOW_ADMIN_DETAILS": request.app.state.config.SHOW_ADMIN_DETAILS,
        "ENABLE_SIGNUP": request.app.state.config.ENABLE_SIGNUP,
        "DEFAULT_USER_ROLE": request.app.state.config.DEFAULT_USER_ROLE,
        "JWT_EXPIRES_IN": request.app.state.config.JWT_EXPIRES_IN,
        "ENABLE_COMMUNITY_SHARING": request.app.state.config.ENABLE_COMMUNITY_SHARING,
    }


class AdminConfig(BaseModel):
    SHOW_ADMIN_DETAILS: bool
    ENABLE_SIGNUP: bool
    DEFAULT_USER_ROLE: str
    JWT_EXPIRES_IN: str
    ENABLE_COMMUNITY_SHARING: bool


@router.post("/admin/config")
async def update_admin_config(
    request: Request, form_data: AdminConfig, user=Depends(get_admin_user)
):
    request.app.state.config.SHOW_ADMIN_DETAILS = form_data.SHOW_ADMIN_DETAILS
    request.app.state.config.ENABLE_SIGNUP = form_data.ENABLE_SIGNUP

    if form_data.DEFAULT_USER_ROLE in ["pending", "user", "admin"]:
        request.app.state.config.DEFAULT_USER_ROLE = form_data.DEFAULT_USER_ROLE

    pattern = r"^(-1|0|(-?\d+(\.\d+)?)(ms|s|m|h|d|w))$"

    # Check if the input string matches the pattern
    if re.match(pattern, form_data.JWT_EXPIRES_IN):
        request.app.state.config.JWT_EXPIRES_IN = form_data.JWT_EXPIRES_IN

    request.app.state.config.ENABLE_COMMUNITY_SHARING = (
        form_data.ENABLE_COMMUNITY_SHARING
    )

    return {
        "SHOW_ADMIN_DETAILS": request.app.state.config.SHOW_ADMIN_DETAILS,
        "ENABLE_SIGNUP": request.app.state.config.ENABLE_SIGNUP,
        "DEFAULT_USER_ROLE": request.app.state.config.DEFAULT_USER_ROLE,
        "JWT_EXPIRES_IN": request.app.state.config.JWT_EXPIRES_IN,
        "ENABLE_COMMUNITY_SHARING": request.app.state.config.ENABLE_COMMUNITY_SHARING,
    }


############################
# API Key
############################


# create api key
@router.post("/api_key", response_model=ApiKey)
async def create_api_key_(user=Depends(get_current_user)):
    api_key = create_api_key()
    success = Users.update_user_api_key_by_id(user.id, api_key)
    if success:
        return {
            "api_key": api_key,
        }
    else:
        raise HTTPException(500, detail=ERROR_MESSAGES.CREATE_API_KEY_ERROR)


# delete api key
@router.delete("/api_key", response_model=bool)
async def delete_api_key(user=Depends(get_current_user)):
    success = Users.update_user_api_key_by_id(user.id, None)
    return success


# get api key
@router.get("/api_key", response_model=ApiKey)
async def get_api_key(user=Depends(get_current_user)):
    api_key = Users.get_user_api_key_by_id(user.id)
    if api_key:
        return {
            "api_key": api_key,
        }
    else:
        raise HTTPException(404, detail=ERROR_MESSAGES.API_KEY_NOT_FOUND)
