from datetime import datetime, timedelta

from flask import request, flash
from flask_login import login_required, current_user
from flask_babel import _
from sqlalchemy import text, desc

from app import db
from app.admin.forms import AdminForm
from app.models import AllowedInstances, BannedInstances, ActivityPubLog
from app.utils import render_template, permission_required, set_setting, get_setting
from app.admin import bp


@bp.route('/', methods=['GET', 'POST'])
@login_required
@permission_required('change instance settings')
def admin_home():
    form = AdminForm()
    if form.validate_on_submit():
        if form.use_allowlist.data:
            set_setting('use_allowlist', True)
            db.session.execute(text('DELETE FROM allowed_instances'))
            for allow in form.allowlist.data.split('\n'):
                if allow.strip():
                    db.session.add(AllowedInstances(domain=allow.strip()))
        if form.use_blocklist.data:
            set_setting('use_allowlist', False)
            db.session.execute(text('DELETE FROM banned_instances'))
            for banned in form.blocklist.data.split('\n'):
                if banned.strip():
                    db.session.add(BannedInstances(domain=banned.strip()))
        db.session.commit()
        flash(_('Admin settings saved'))

    elif request.method == 'GET':
        form.use_allowlist.data = get_setting('use_allowlist', False)
        form.use_blocklist.data = not form.use_allowlist.data
        instances = BannedInstances.query.all()
        form.blocklist.data = '\n'.join([instance.domain for instance in instances])
        instances = AllowedInstances.query.all()
        form.allowlist.data = '\n'.join([instance.domain for instance in instances])

    return render_template('admin/home.html', title=_('Admin settings'), form=form)


@bp.route('/activities', methods=['GET'])
@login_required
@permission_required('change instance settings')
def admin_activities():
    db.session.query(ActivityPubLog).filter(
        ActivityPubLog.created_at < aware_utcnow() - timedelta(days=3)).delete()
    db.session.commit()

    return render_template('admin/activities.html', title=_('ActivityPub Log'),
                           activities=ActivityPubLog.query.order_by(desc(ActivityPubLog.created_at)).all())