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.web.models.auths import (
    SigninForm,
    SignupForm,
    AddUserForm,
    UpdateProfileForm,
    UpdatePasswordForm,
    UserResponse,
    SigninResponse,
    Auths,
    ApiKey,
)
from apps.web.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, config_get, config_set

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()
        if not Users.get_user_by_email(trusted_email.lower()):
            await signup(
                request,
                SignupForm(
                    email=trusted_email, password=str(uuid.uuid4()), name=trusted_email
                ),
            )
        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(config_get(request.app.state.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 config_get(request.app.state.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 config_get(request.app.state.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(
                    config_get(request.app.state.JWT_EXPIRES_IN)
                ),
            )
            # response.set_cookie(key='token', value=token, httponly=True)

            if config_get(request.app.state.WEBHOOK_URL):
                post_webhook(
                    config_get(request.app.state.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))


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


@router.get("/signup/enabled", response_model=bool)
async def get_sign_up_status(request: Request, user=Depends(get_admin_user)):
    return config_get(request.app.state.ENABLE_SIGNUP)


@router.get("/signup/enabled/toggle", response_model=bool)
async def toggle_sign_up(request: Request, user=Depends(get_admin_user)):
    config_set(
        request.app.state.ENABLE_SIGNUP, not config_get(request.app.state.ENABLE_SIGNUP)
    )
    return config_get(request.app.state.ENABLE_SIGNUP)


############################
# Default User Role
############################


@router.get("/signup/user/role")
async def get_default_user_role(request: Request, user=Depends(get_admin_user)):
    return config_get(request.app.state.DEFAULT_USER_ROLE)


class UpdateRoleForm(BaseModel):
    role: str


@router.post("/signup/user/role")
async def update_default_user_role(
    request: Request, form_data: UpdateRoleForm, user=Depends(get_admin_user)
):
    if form_data.role in ["pending", "user", "admin"]:
        config_set(request.app.state.DEFAULT_USER_ROLE, form_data.role)
    return config_get(request.app.state.DEFAULT_USER_ROLE)


############################
# JWT Expiration
############################


@router.get("/token/expires")
async def get_token_expires_duration(request: Request, user=Depends(get_admin_user)):
    return config_get(request.app.state.JWT_EXPIRES_IN)


class UpdateJWTExpiresDurationForm(BaseModel):
    duration: str


@router.post("/token/expires/update")
async def update_token_expires_duration(
    request: Request,
    form_data: UpdateJWTExpiresDurationForm,
    user=Depends(get_admin_user),
):
    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.duration):
        config_set(request.app.state.JWT_EXPIRES_IN, form_data.duration)
        return config_get(request.app.state.JWT_EXPIRES_IN)
    else:
        return config_get(request.app.state.JWT_EXPIRES_IN)


############################
# 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)