#!/usr/bin/env python3

# Libervia: an XMPP client
# Copyright (C) 2009-2026 Jérôme Poisson (goffi@goffi.org)

# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU Affero General Public License as published by
# the Free Software Foundation, either version 3 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 Affero General Public License for more details.

# You should have received a copy of the GNU Affero General Public License
# along with this program.  If not, see <http://www.gnu.org/licenses/>.

from unittest.mock import MagicMock

from libervia.backend.plugins.plugin_xep_0166 import XEP_0166
from libervia.backend.tools.common import data_format


class TestXEP0166ContentChangeSignal:
    def _get_session(self, content_name="video"):
        mock_application = MagicMock()
        mock_application.handler.get_content_change_payload.return_value = {
            "media": "video",
        }
        return {
            "id": "123",
            "added_content_names": [content_name],
            "contents": {
                content_name: {
                    "senders": "initiator",
                    "application": mock_application,
                }
            },
        }

    def test_emit_content_change(self, host, client):
        """The signal carries the session data and the application extra data"""
        xep_0166 = XEP_0166(host)
        mock_signal = MagicMock()
        host.bridge.jingle_content_change = mock_signal
        session = self._get_session()

        xep_0166._emit_content_change(client, XEP_0166.A_CONTENT_ADD, session)

        args = mock_signal.call_args.args
        assert args[1] == client.profile
        info = data_format.deserialise(args[0])
        assert info["session_id"] == "123"
        assert info["action"] == XEP_0166.A_CONTENT_ADD
        assert info["changes"] == [
            {"content": "video", "senders": "initiator", "payload": {"media": "video"}}
        ]
        session["contents"]["video"][
            "application"
        ].handler.get_content_change_payload.assert_called_once_with(
            client, XEP_0166.A_CONTENT_ADD, session, "video"
        )

    def test_emit_content_change_multi_content(self, host, client):
        """A stanza with several contents emits a single signal with all the changes"""
        xep_0166 = XEP_0166(host)
        mock_signal = MagicMock()
        host.bridge.jingle_content_change = mock_signal
        session = self._get_session("video")
        session["added_content_names"] = ["video", "audio"]
        session["contents"]["audio"] = session["contents"]["video"]

        xep_0166._emit_content_change(client, XEP_0166.A_CONTENT_ADD, session)

        assert mock_signal.call_count == 1
        info = data_format.deserialise(mock_signal.call_args.args[0])
        changes = [change["content"] for change in info["changes"]]
        assert changes == ["video", "audio"]

    def test_emit_content_change_unknown_content(self, host, client):
        """When the content is unknown, no signal is emitted and no exception raised"""
        xep_0166 = XEP_0166(host)
        mock_signal = MagicMock()
        host.bridge.jingle_content_change = mock_signal
        session = {
            "id": "123",
            "added_content_names": ["video"],
            "contents": {},
        }

        xep_0166._emit_content_change(client, XEP_0166.A_CONTENT_ADD, session)

        mock_signal.assert_not_called()