/*
Copyright 2016 OpenMarket Ltd

Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at

    http://www.apache.org/licenses/LICENSE-2.0

Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
*/

/* joining.js: tests for the various paths when joining a room */

import PlatformPeg from 'matrix-react-sdk/lib/PlatformPeg';
import Platform from '../../src/vector/platform';

require('skin-sdk');

var jssdk = require('matrix-js-sdk');

var sdk = require('matrix-react-sdk');
var peg = require('matrix-react-sdk/lib/MatrixClientPeg');
var dis = require('matrix-react-sdk/lib/dispatcher');
var PageTypes = require('matrix-react-sdk/lib/PageTypes');
var MatrixChat = sdk.getComponent('structures.MatrixChat');
var RoomDirectory = sdk.getComponent('structures.RoomDirectory');
var RoomPreviewBar = sdk.getComponent('rooms.RoomPreviewBar');
var RoomView = sdk.getComponent('structures.RoomView');

var React = require('react');
var ReactDOM = require('react-dom');
var ReactTestUtils = require('react-addons-test-utils');
var expect = require('expect');
import Promise from 'bluebird';

var test_utils = require('../test-utils');
var MockHttpBackend = require('matrix-mock-request');

var HS_URL='http://localhost';
var IS_URL='http://localhost';
var USER_ID='@me:localhost';
var ACCESS_TOKEN='access_token';

describe('joining a room', function () {
    describe('over federation', function () {
        var parentDiv;
        var httpBackend;
        var matrixChat;

        beforeEach(function() {
            test_utils.beforeEach(this);
            httpBackend = new MockHttpBackend();
            jssdk.request(httpBackend.requestFn);
            parentDiv = document.createElement('div');

            // uncomment this to actually add the div to the UI, to help with
            // debugging (but slow things down)
            // document.body.appendChild(parentDiv);
        });

        afterEach(function() {
            if (parentDiv) {
                ReactDOM.unmountComponentAtNode(parentDiv);
                parentDiv.remove();
                parentDiv = null;
            }
        });

        it('should not get stuck at a spinner', function() {
            var ROOM_ALIAS = '#alias:localhost';
            var ROOM_ID = '!id:localhost';

            httpBackend.when('GET', '/pushrules').respond(200, {});
            httpBackend.when('POST', '/filter').respond(200, { filter_id: 'fid' });

            // note that we deliberately do *not* set an expectation for a
            // presence update - setting one makes the first httpBackend.flush
            // return before the first /sync arrives.

            // start with a logged-in client
            localStorage.setItem("mx_hs_url", HS_URL );
            localStorage.setItem("mx_is_url", IS_URL );
            localStorage.setItem("mx_access_token", ACCESS_TOKEN );
            localStorage.setItem("mx_user_id", USER_ID);

            PlatformPeg.set(new Platform());

            var mc = (
                <MatrixChat config={{}}
                    makeRegistrationUrl={()=>{throw new Error("unimplemented");}}
                    initialScreenAfterLogin={{
                        screen: 'directory',
                    }}
                />
            );
            matrixChat = ReactDOM.render(mc, parentDiv);

            var roomView;

            // wait for /sync to happen. This may take some time, as the client
            // has to initialise indexeddb.
            console.log("waiting for /sync");
            httpBackend.when('GET', '/sync')
                .respond(200, {});

            return httpBackend.flushAllExpected({
                timeout: 1000,
            }).then(() => {
                // wait for the directory requests
                httpBackend.when('POST', '/publicRooms').respond(200, {chunk: []});
                httpBackend.when('GET', '/thirdparty/protocols').respond(200, {});
                return httpBackend.flushAllExpected();
            }).then(() => {
                console.log(`${Date.now()} App made requests for directory view; switching to a room.`);

                var roomDir = ReactTestUtils.findRenderedComponentWithType(
                    matrixChat, RoomDirectory);

                // enter an alias in the input, and simulate enter
                var input = ReactTestUtils.findRenderedDOMComponentWithTag(
                    roomDir, 'input');
                input.value = ROOM_ALIAS;
                ReactTestUtils.Simulate.change(input);
                ReactTestUtils.Simulate.keyUp(input, {key: 'Enter'});

                // that should create a roomview which will start a peek; wait
                // for the peek.
                httpBackend.when('GET', '/directory/room/'+encodeURIComponent(ROOM_ALIAS)).respond(200, { room_id: ROOM_ID });
                httpBackend.when('GET', '/rooms/'+encodeURIComponent(ROOM_ID)+"/initialSync")
                    .respond(401, {errcode: 'M_GUEST_ACCESS_FORBIDDEN'});

                return httpBackend.flushAllExpected();
            }).then(() => {
                console.log(`${Date.now()} App made room preview request`);

                // we should now have a roomview
                roomView = ReactTestUtils.findRenderedComponentWithType(
                    matrixChat, RoomView);

                // the preview bar may take a tick to be displayed
                return Promise.delay(1);
            }).then(() => {
                const previewBar = ReactTestUtils.findRenderedComponentWithType(
                    roomView, RoomPreviewBar);

                const joinLink = ReactTestUtils.findRenderedDOMComponentWithTag(
                    previewBar, 'a');

                ReactTestUtils.Simulate.click(joinLink);

                httpBackend.when('POST', '/join/'+encodeURIComponent(ROOM_ALIAS))
                    .respond(200, {room_id: ROOM_ID});
            }).then(() => {
                // wait for the join request to be made
                return Promise.delay(1);
            }).then(() => {
                // and again, because the state update has to go to the store and
                // then one dispatch within the store, then to the view
                // XXX: This is *super flaky*: a better way would be to declare
                // that we expect a certain state transition to happen, then wait
                // for that transition to occur.
                return Promise.delay(1);
            }).then(() => {
                // the roomview should now be loading
                expect(roomView.state.room).toBe(null);
                expect(roomView.state.joining).toBe(true);

                // there should be a spinner
                ReactTestUtils.findRenderedDOMComponentWithClass(
                    roomView, "mx_Spinner");

                // flush it through
                return httpBackend.flush('/join/'+encodeURIComponent(ROOM_ALIAS));
            }).then(() => {
                httpBackend.verifyNoOutstandingExpectation();

                return Promise.delay(1);
            }).then(() => {
                // NB. we don't expect the 'joining' flag to reset at any point:
                // it will stay set and we observe whether we have Room object for
                // the room and whether our member event shows we're joined.

                // now send the room down the /sync pipe
                httpBackend.when('GET', '/sync').
                    respond(200, {
                        rooms: {
                            join: {
                                [ROOM_ID]: {
                                    state: {},
                                    timeline: {
                                        events: [],
                                        limited: true,
                                    },
                                },
                            },
                        },
                    });
                return httpBackend.flush();
            }).then(() => {
                // now the room should have loaded
                expect(roomView.state.room).toExist();
            });
        });
    });
});
