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# This file is part of Remote Support Desktop
# https://gitlab.das-netzwerkteam.de/RemoteWebApp/remote-support-session-service
# Copyright 2020 Jonathan Weth <mail@jonathanweth.de>
# Copyright 2020 Daniel Teichmann <daniel.teichmann@das-netzwerkteam.de>
# Copyright 2020 Mike Gabriel <mike.gabriel@das-netzwerktea.de>
# SPDX-License-Identifier: GPL-2.0-or-later
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the
# Free Software Foundation, Inc.,
# 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA.
#
# You should have received a copy of the GNU General Public License
# along with this program.  If not, see <https://www.gnu.org/licenses/>.

import threading
from typing import Any, Callable
from wsgiref.simple_server import make_server

import port_for
from flask import Flask, abort, request


class TriggerServerThread(threading.Thread):
    """Simple Flask server (wrapped as thread) for triggering actions on sessions."""

    def __init__(self, trigger_method: Callable[[str], Any]):
        super().__init__()
        self.port = port_for.select_random()

        app = Flask(__name__)

        @app.route("/", methods=["POST"])
        def trigger():
            json = request.json
            token = json.get("token", "")
            r = trigger_method(token)
            if r:
                return "Successful triggered"
            else:
                return abort(403)

        self.srv = make_server("0.0.0.0", self.port, app)
        self.ctx = app.app_context()
        self.ctx.push()

    def run(self):
        self.srv.serve_forever()

    def shutdown(self):
        self.srv.shutdown()