from app.utils import background_delete_user
from flask import current_app, flash, redirect, render_template, url_for
from flask_login import login_required
from . import admin
from .forms import EditProfileAdminForm
from .. import db
from ..decorators import admin_required
from ..models import Role, User
from ..tables import AdminUserTable, AdminUserItem
import threading


@admin.route('/overview', methods=['GET', 'POST'])
@login_required
@admin_required
def for_admins_only():
    users = User.query.order_by(User.username).all()
    items = [AdminUserItem(u.username, u.email, u.role_id, u.confirmed, u.id)
             for u in users]
    # Convert table object to html string
    table = AdminUserTable(items).__html__()
    # Add class "list" to tbody element. Needed for "List.js"
    table = table.replace('tbody', 'tbody class="list"', 1)
    return render_template('admin/admin.html.j2',
                           table=table,
                           title='Administration tools')


@admin.route('/overview/admin_user_page/<int:user_id>',
             methods=['GET', 'POST'])
@login_required
@admin_required
def admin_user_page(user_id):
    selected_user = User.query.filter_by(id=user_id).first()
    title = 'Administration of user {} with ID: {}'.format(
        selected_user.username,
        selected_user.id
    )
    registration_date = selected_user.registration_date.strftime(
        '%A, %e %B %H:%M'
    )
    return render_template('admin/admin_user_page.html.j2',
                           registration_date=registration_date,
                           selected_user=selected_user,
                           title=title)


@admin.route('/overview/admin_user_page/delete/<int:user_id>',
             methods=['GET', 'POST'])
@login_required
@admin_required
def admin_delete_user(user_id):
    delete_thread = threading.Thread(
        target=background_delete_user,
        args=(current_app._get_current_object(), user_id)
    )
    delete_thread.start()
    flash('User {} has been deleted!'.format(user_id))
    return redirect(url_for('admin.for_admins_only'))


@admin.route('/overview/admin_user_page/edit_profile_admin/<int:user_id>',
             methods=['GET', 'POST'])
@login_required
@admin_required
def edit_profile_admin(user_id):
    user = User.query.get_or_404(user_id)
    form = EditProfileAdminForm(user=user)
    if form.validate_on_submit():
        user.email = form.email.data
        user.username = form.username.data
        user.confirmed = form.confirmed.data
        user.role = Role.query.get(form.role.data)
        db.session.add(user)
        db.session.commit()
        flash('The profile has been updated.')
        return redirect(url_for('admin.edit_profile_admin', user_id=user.id))
    form.email.data = user.email
    form.username.data = user.username
    form.confirmed.data = user.confirmed
    form.role.data = user.role_id
    title = 'Edit profile of user {} with ID {}'.format(
        user.username,
        user.id
    )
    return render_template('admin/edit_profile_admin.html.j2',
                           form=form,
                           title=title,
                           user=user)