from mailu import models
from mailu.ui import ui, forms, access
from flask import current_app as app

import flask
import flask_login
import wtforms_components
import dns.resolver


@ui.route('/domain', methods=['GET'])
@access.authenticated
def domain_list():
    return flask.render_template('domain/list.html')


@ui.route('/domain/create', methods=['GET', 'POST'])
@access.global_admin
def domain_create():
    form = forms.DomainForm()
    if form.validate_on_submit():
        conflicting_domain = models.Domain.query.get(form.name.data)
        conflicting_alternative = models.Alternative.query.get(form.name.data)
        conflicting_relay = models.Relay.query.get(form.name.data)
        if conflicting_domain or conflicting_alternative or conflicting_relay:
            flask.flash('Domain %s is already used' % form.name.data, 'error')
        else:
            domain = models.Domain()
            form.populate_obj(domain)
            models.db.session.add(domain)
            models.db.session.commit()
            flask.flash('Domain %s created' % domain)
            return flask.redirect(flask.url_for('.domain_list'))
    return flask.render_template('domain/create.html', form=form)


@ui.route('/domain/edit/<domain_name>', methods=['GET', 'POST'])
@access.global_admin
def domain_edit(domain_name):
    domain = models.Domain.query.get(domain_name) or flask.abort(404)
    form = forms.DomainForm(obj=domain)
    wtforms_components.read_only(form.name)
    form.name.validators = []
    if form.validate_on_submit():
        form.populate_obj(domain)
        models.db.session.commit()
        flask.flash('Domain %s saved' % domain)
        return flask.redirect(flask.url_for('.domain_list'))
    return flask.render_template('domain/edit.html', form=form,
        domain=domain)


@ui.route('/domain/delete/<domain_name>', methods=['GET', 'POST'])
@access.global_admin
@access.confirmation_required("delete {domain_name}")
def domain_delete(domain_name):
    domain = models.Domain.query.get(domain_name) or flask.abort(404)
    models.db.session.delete(domain)
    models.db.session.commit()
    flask.flash('Domain %s deleted' % domain)
    return flask.redirect(flask.url_for('.domain_list'))


@ui.route('/domain/details/<domain_name>', methods=['GET'])
@access.domain_admin(models.Domain, 'domain_name')
def domain_details(domain_name):
    domain = models.Domain.query.get(domain_name) or flask.abort(404)
    return flask.render_template('domain/details.html', domain=domain)


@ui.route('/domain/genkeys/<domain_name>', methods=['GET', 'POST'])
@access.domain_admin(models.Domain, 'domain_name')
@access.confirmation_required("regenerate keys for {domain_name}")
def domain_genkeys(domain_name):
    domain = models.Domain.query.get(domain_name) or flask.abort(404)
    domain.generate_dkim_key()
    models.db.session.add(domain)
    models.db.session.commit()
    return flask.redirect(
        flask.url_for(".domain_details", domain_name=domain_name))


@ui.route('/domain/signup', methods=['GET', 'POST'])
def domain_signup(domain_name=None):
    if not app.config['DOMAIN_REGISTRATION']:
        flask.abort(403)
    form = forms.DomainSignupForm()
    if flask_login.current_user.is_authenticated:
        del form.localpart
        del form.pw
        del form.pw2
    if form.validate_on_submit():
        conflicting_domain = models.Domain.query.get(form.name.data)
        conflicting_alternative = models.Alternative.query.get(form.name.data)
        conflicting_relay = models.Relay.query.get(form.name.data)
        if conflicting_domain or conflicting_alternative or conflicting_relay:
            flask.flash('Domain %s is already used' % form.name.data, 'error')
        else:
            domain = models.Domain()
            form.populate_obj(domain)
            domain.max_quota_bytes = app.config['DEFAULT_QUOTA']
            domain.max_users = 10
            domain.max_aliases = 10
            if domain.check_mx():
                models.db.session.add(domain)
                if flask_login.current_user.is_authenticated:
                    user = models.User.query.get(flask_login.current_user.email)
                else:
                    user = models.User()
                    user.domain = domain
                    form.populate_obj(user)
                    user.set_password(form.pw.data)
                    user.quota_bytes = domain.max_quota_bytes
                models.db.session.add(user)
                domain.managers.append(user)
                models.db.session.commit()
                flask.flash('Domain %s created' % domain)
                return flask.redirect(flask.url_for('.domain_list'))
            else:
                flask.flash('The MX record was not properly set', 'error')
    return flask.render_template('domain/signup.html', form=form)