import json

from cryptography.fernet import Fernet
from fastapi import APIRouter, Response, Depends, status

from app.config import settings
from app.exceptions import (
	PasswordsMismatchException,
	WrongCodeException,
	UserNotFoundException,
	SomethingWentWrongException,
	UserAlreadyExistsException,
)
from app.users.auth import get_password_hash, create_access_token, VERIFICATED_USER, AuthService
from app.users.dao import UserDAO, UserCodesDAO
from app.users.dependencies import get_current_user
from app.users.schemas import (
	SUserLogin,
	SUserRegister,
	SUserResponse,
	SUserPasswordRecover,
	SUserCode,
	SUserPasswordChange,
	SRecoverEmailSent,
	SUserToken,
	SEmailVerification,
	SConfirmPasswordRecovery,
	SPasswordRecovered,
	SUserAvatars,
	SUsername,
	SEmail, SUser,
)
from app.tasks.tasks import send_registration_confirmation_email, send_password_change_email, \
	send_password_recover_email

router = APIRouter(prefix="/users", tags=["Пользователи"])


@router.get(
	"",
	status_code=status.HTTP_200_OK,
	response_model=list[SUserResponse],
)
async def get_all_users():
	users = await UserDAO.find_all()
	return users


@router.post(
	"/check_existing_username",
	status_code=status.HTTP_200_OK,
	response_model=None,
)
async def check_existing_username(username: SUsername):
	user = await UserDAO.find_one_or_none(username=username.username)
	if user:
		raise UserAlreadyExistsException


@router.post(
	"/check_existing_email",
	status_code=status.HTTP_200_OK,
	response_model=None,
)
async def check_existing_email(email: SEmail):
	user = await UserDAO.find_one_or_none(email=email.email)
	if user:
		raise UserAlreadyExistsException


@router.post(
	"/register",
	status_code=status.HTTP_201_CREATED,
	response_model=SUserToken,
)
async def register_user(response: Response, user_data: SUserRegister):
	if user_data.password != user_data.password2:
		raise PasswordsMismatchException
	await AuthService.check_existing_user(user_data)

	hashed_password = get_password_hash(user_data.password)
	user_id = await UserDAO.add(
		email=user_data.email,
		hashed_password=hashed_password,
		username=user_data.username,
		date_of_birth=user_data.date_of_birth,
	)

	result = send_registration_confirmation_email.delay(
		user_id=user_id, username=user_data.username, email_to=user_data.email, MODE=settings.MODE
	)
	result = result.get()

	if await UserCodesDAO.set_user_codes(user_id=user_id, code=result, description="Код подтверждения почты") == result:
		user = await AuthService.authenticate_user_by_email(user_data.email, user_data.password)
		access_token = create_access_token({"sub": str(user.id)})
		response.set_cookie(key="black_phoenix_access_token", value=access_token, httponly=True, secure=True)
		return {"access_token": access_token}


@router.get(
	"/email_verification/{user_code}",
	status_code=status.HTTP_200_OK,
	response_model=SEmailVerification,
)
async def email_verification(user_code: str):
	invitation_token = user_code.encode()
	cipher_suite = Fernet(settings.INVITATION_LINK_TOKEN_KEY)
	user_data = cipher_suite.decrypt(invitation_token).decode("utf-8")
	user_data = json.loads(user_data)
	user_codes = await UserCodesDAO.get_user_codes(
		user_id=user_data["user_id"], description="Код подтверждения почты", code=user_data["confirmation_code"]
	)
	if not user_codes or not await UserDAO.change_data(user_id=user_data["user_id"], role=VERIFICATED_USER):
		raise WrongCodeException
	return {"email_verification": True}


@router.post(
	"/login",
	status_code=status.HTTP_200_OK,
	response_model=SUserToken,
)
async def login_user(response: Response, user_data: SUserLogin):
	user = await AuthService.authenticate_user(user_data.email_or_username, user_data.password)
	access_token = create_access_token({"sub": str(user.id)})
	response.set_cookie("black_phoenix_access_token", access_token, httponly=True)
	return {"access_token": access_token}


@router.post(
	"/logout",
	status_code=status.HTTP_200_OK,
	response_model=None,
)
async def logout_user(response: Response):
	response.delete_cookie("black_phoenix_access_token")


@router.get(
	"/me",
	status_code=status.HTTP_200_OK,
	response_model=SUserResponse,
)
async def get_user(current_user: SUser = Depends(get_current_user)):
	return current_user


@router.patch(
	"/send_recovery_email",
	status_code=status.HTTP_200_OK,
	response_model=SRecoverEmailSent,
)
async def send_recovery_email(email: SUserPasswordRecover):
	existing_user = await UserDAO.find_one_or_none(email=email.email)
	if not existing_user:
		raise UserNotFoundException
	result = send_password_recover_email.delay(existing_user.username, existing_user.email, MODE=settings.MODE)
	result = result.get()

	if (
			await UserCodesDAO.set_user_codes(
				user_id=existing_user.user_id, code=result, description="Код восстановления пароля"
			)
			== result
	):
		return {"recover_email_sent": True}
	raise SomethingWentWrongException


@router.post(
	"/confirm_password_recovery",
	status_code=status.HTTP_200_OK,
	response_model=SConfirmPasswordRecovery,
)
async def confirm_password_recovery(user_code: SUserCode):
	user_codes = await UserCodesDAO.get_user_codes(description="Код восстановления пароля", code=user_code.user_code)
	if not user_codes:
		raise WrongCodeException
	return {"user_id": user_codes[0]["user_id"]}


@router.post(
	"/password_recovery",
	status_code=status.HTTP_200_OK,
	response_model=SPasswordRecovered,
)
async def password_recovery(passwords: SUserPasswordChange):
	if passwords.password1 != passwords.password2:
		raise PasswordsMismatchException
	hashed_password = get_password_hash(passwords.password1)
	username = await UserDAO.change_data(passwords.user_id, hashed_password=hashed_password)
	user = await UserDAO.find_one_or_none(username=username, id=passwords.user_id)
	if not user:
		raise UserNotFoundException
	send_password_change_email.delay(user.username, user.email, MODE=settings.MODE)
	return {"username": username}


@router.get(
	"/avatars",
	status_code=status.HTTP_200_OK,
	response_model=SUserAvatars,
)
async def get_user_avatars_history(user: SUser = Depends(get_current_user)):
	return await UserDAO.get_user_avatars(user_id=user.id)