from django.conf import settings
from django.contrib.auth.models import User
from django.contrib.sites.shortcuts import get_current_site
from django.core.mail import EmailMessage, send_mail, mail_admins
from django.template.loader import render_to_string
from django.utils.encoding import force_bytes
from django.utils.http import urlsafe_base64_encode
from . tokens import generate_token
from users import parameter


def send_activation_mail(new_user, request):
    email_subject = "Activate Account"
    message2 = render_to_string('users/email_activation.html', {
        'name': new_user.first_name,
        'base_url': request.build_absolute_uri('/')[:-1],
        'pk': new_user.pk,
    })
    email = EmailMessage(
        email_subject,
        message2,
        settings.EMAIL_HOST_USER,
    )
    mail_admins(email_subject, message2, fail_silently=True)


def send_validation_failed(uid, token):
    subject = "E-Mail validation failed!"
    message = f"uid = {uid}\ntoken = '{token}'"
    mail_admins(subject, message, fail_silently=True)


def send_recover_failed(uid, token):
    subject = "Password recovery failed!"
    message = f"uid = {uid}\ntoken = '{token}'"
    mail_admins(subject, message, fail_silently=True)


def send_welcome_mail(new_user: User):
    subject = "Welcome!"
    message = """Hello %(username)s.

Welcome!

Thank you for registration.""" % {"username": new_user.first_name}
    message += "\n\n" + parameter.registration_flow_description(new_user.username)
    send_mail(subject, message, settings.EMAIL_FROM, [new_user.email], fail_silently=True)


def send_validation_mail(new_user, request):
    email_subject = "Confirm your Email"
    message2 = render_to_string('users/email_confirmation.html', {
        'name': new_user.first_name,
        'base_url': request.build_absolute_uri('/')[:-1],
        'uid': urlsafe_base64_encode(force_bytes(new_user.pk)),
        'token': generate_token.make_token(new_user)
    })
    email = EmailMessage(
        email_subject,
        message2,
        settings.EMAIL_HOST_USER,
        [new_user.email],
    )
    send_mail(email_subject, message2, settings.EMAIL_FROM, [new_user.email], fail_silently=True)


def send_recover_mail(user, request):
    email_subject = "Password recovery"
    message2 = render_to_string('users/email_recover.html', {
        'name': user.first_name,
        'base_url': request.build_absolute_uri('/')[:-1],
        'uid': urlsafe_base64_encode(force_bytes(user.pk)),
        'token': generate_token.make_token(user)
    })
    email = EmailMessage(
        email_subject,
        message2,
        settings.EMAIL_HOST_USER,
        [user.email],
    )
    send_mail(email_subject, message2, settings.EMAIL_FROM, [user.email], fail_silently=True)