odoo.define('web.bus_tests', function (require) {
"use strict";

var { busService } = require('@bus/services/bus_service');
const { presenceService } = require('@bus/services/presence_service');
const { multiTabService } = require('@bus/multi_tab_service');
const { WEBSOCKET_CLOSE_CODES } = require("@bus/workers/websocket_worker");
const { startServer } = require('@bus/../tests/helpers/mock_python_environment');
const { patchWebsocketWorkerWithCleanup } = require("@bus/../tests/helpers/mock_websocket");
const { waitForChannels } = require('@bus/../tests/helpers/websocket_event_deferred');

const { browser } = require("@web/core/browser/browser");
const { registry } = require("@web/core/registry");
const { session } = require('@web/session');
const { makeDeferred, nextTick, patchWithCleanup } = require("@web/../tests/helpers/utils");
const { makeTestEnv } = require('@web/../tests/helpers/mock_env');
const legacySession = require('web.session');

QUnit.module('Bus', {
    beforeEach: function () {
        const customMultiTabService = {
            ...multiTabService,
            start() {
                const originalMultiTabService = multiTabService.start(...arguments);
                originalMultiTabService.TAB_HEARTBEAT_PERIOD = 10;
                originalMultiTabService.MAIN_TAB_HEARTBEAT_PERIOD = 1;
                return originalMultiTabService;
            },
        };
        registry.category('services').add('bus_service', busService);
        registry.category('services').add('presence', presenceService);
        registry.category('services').add('multi_tab', customMultiTabService);
    },
}, function () {
    QUnit.test('notifications received from the channel', async function (assert) {
        assert.expect(3);

        const pyEnv = await startServer();
        const env = await makeTestEnv({ activateMockServer: true });
        await env.services['bus_service'].start();
        env.services['bus_service'].addEventListener('notification', ({ detail: notifications }) => {
            assert.step('notification - ' + notifications.map(notif => notif.payload).toString());
        });
        env.services['bus_service'].addChannel('lambda');
        pyEnv['bus.bus']._sendone('lambda', 'notifType', 'beta');
        await nextTick();

        pyEnv['bus.bus']._sendone('lambda', 'notifType', 'epsilon');
        await nextTick();

        assert.verifySteps([
            'notification - beta',
            'notification - epsilon',
        ]);
    });

    QUnit.test('notifications not received after stoping the service', async function (assert) {
        assert.expect(4);

        const pyEnv = await startServer();
        const firstTabEnv = await makeTestEnv({ activateMockServer: true });
        const secondTabEnv = await makeTestEnv({ activateMockServer: true });
        await firstTabEnv.services['bus_service'].start();
        await secondTabEnv.services['bus_service'].start();

        firstTabEnv.services['bus_service'].addEventListener('notification', ({ detail: notifications }) => {
            assert.step('1 - notification - ' + notifications.map(notif => notif.payload).toString());
        });
        firstTabEnv.services['bus_service'].addChannel('lambda');
        secondTabEnv.services['bus_service'].addEventListener('notification', ({ detail: notifications }) => {
            assert.step('2 - notification - ' + notifications.map(notif => notif.payload).toString());
        });
        // both tabs should receive the notification
        pyEnv['bus.bus']._sendone('lambda', 'notifType', 'beta');
        await nextTick();
        secondTabEnv.services['bus_service'].stop();
        await nextTick();
        // only first tab should receive the notification since the
        // second tab has called the stop method.
        pyEnv['bus.bus']._sendone('lambda', 'notifType', 'epsilon');
        await nextTick();

        assert.verifySteps([
            '1 - notification - beta',
            '2 - notification - beta',
            '1 - notification - epsilon',
        ]);
    });

    QUnit.test('notifications still received after disconnect/reconnect', async function (assert) {
        assert.expect(3);

        const oldSetTimeout = window.setTimeout;
        patchWithCleanup(
            window,
            {
                setTimeout: callback => oldSetTimeout(callback, 0)
            },
            { pure: true },
        )

        const pyEnv = await startServer();
        const env = await makeTestEnv({ activateMockServer: true });
        await env.services["bus_service"].start();
        await nextTick();
        env.services['bus_service'].addEventListener('notification', ({ detail: notifications }) => {
            assert.step('notification - ' + notifications.map(notif => notif.payload).toString());
        });
        env.services['bus_service'].addChannel('lambda');
        pyEnv['bus.bus']._sendone('lambda', 'notifType', 'beta');
        pyEnv.simulateConnectionLost(WEBSOCKET_CLOSE_CODES.ABNORMAL_CLOSURE);
        // Give websocket worker a tick to try to restart
        await nextTick();
        pyEnv['bus.bus']._sendone('lambda', 'notifType', 'gamma');
        // Give bus service a tick to receive the notification from
        // postMessage.
        await nextTick();

        assert.verifySteps([
            "notification - beta",
            "notification - gamma",
        ]);
    });

    QUnit.test('tabs share message from a channel', async function (assert) {
        assert.expect(1);

        const pyEnv = await startServer();
        const steps = new Set();
        // main
        const mainEnv = await makeTestEnv({ activateMockServer: true });
        mainEnv.services['bus_service'].addEventListener('notification', ({ detail: notifications }) => {
            steps.add('main - notification - ' + notifications.map(notif => notif.payload).toString());
        });
        await mainEnv.services['bus_service'].addChannel('lambda');

        // slave
        const slaveEnv = await makeTestEnv();
        await slaveEnv.services['bus_service'].start();

        slaveEnv.services['bus_service'].addEventListener('notification', ({ detail: notifications }) => {
            steps.add('slave - notification - ' + notifications.map(notif => notif.payload).toString());
        });
        await slaveEnv.services['bus_service'].addChannel('lambda');

        pyEnv['bus.bus']._sendone('lambda', 'notifType', 'beta');
        // Wait one tick for the worker `postMessage` to reach the bus_service.
        await nextTick();
        // Wait another tick for the `bus.trigger` to reach the listeners.
        await nextTick();

        assert.deepEqual(
            [...steps],
            ["slave - notification - beta", "main - notification - beta"]
        );
    });

    QUnit.test('second tab still receives notifications after main pagehide', async function (assert) {
        assert.expect(1);

        const pyEnv = await startServer();
        const steps = new Set();
        // main
        const mainEnv = await makeTestEnv({ activateMockServer: true });
        await mainEnv.services['bus_service'].start();
        mainEnv.services['bus_service'].addEventListener('notification', ({ detail: notifications }) => {
            steps.add('main - notification - ' + notifications.map(notif => notif.payload).toString());
        });
        mainEnv.services['bus_service'].addChannel('lambda');

        // second env
        // prevent second tab from receiving pagehide event.
        patchWithCleanup(browser, {
            addEventListener(eventName, callback) {
                if (eventName === 'pagehide') {
                    return;
                }
                this._super(eventName, callback);
            },
        });
        const secondEnv = await makeTestEnv({ activateMockServer: true });
        secondEnv.services['bus_service'].addEventListener('notification', ({ detail: notifications }) => {
            steps.add('slave - notification - ' + notifications.map(notif => notif.payload).toString());
        });
        secondEnv.services['bus_service'].addChannel('lambda');
        pyEnv['bus.bus']._sendone('lambda', 'notifType', 'beta');
        await nextTick();

        // simulate unloading main
        window.dispatchEvent(new Event('pagehide'));
        await nextTick();

        pyEnv['bus.bus']._sendone('lambda', 'notifType', 'gamma');
        await nextTick();

        assert.deepEqual(
            [...steps],
            [
            'slave - notification - beta',
            'main - notification - beta',
            'slave - notification - gamma',
        ]);
    });

    QUnit.test('two tabs calling addChannel simultaneously', async function (assert) {
        assert.expect(5);

        const channelPatch = {
            addChannel(channel) {
                assert.step('Tab ' + this.__tabId__ + ': addChannel ' + channel);
                this._super.apply(this, arguments);
            },
            deleteChannel(channel) {
                assert.step('Tab ' + this.__tabId__ + ': deleteChannel ' + channel);
                this._super.apply(this, arguments);
            },
        };
        const firstTabEnv = await makeTestEnv({ activateMockServer: true });
        const secondTabEnv = await makeTestEnv({ activateMockServer: true });
        firstTabEnv.services['bus_service'].__tabId__ = 1;
        secondTabEnv.services['bus_service'].__tabId__ = 2;
        patchWithCleanup(firstTabEnv.services['bus_service'], channelPatch);
        patchWithCleanup(secondTabEnv.services['bus_service'], channelPatch);
        firstTabEnv.services['bus_service'].addChannel('alpha');
        secondTabEnv.services['bus_service'].addChannel('alpha');
        firstTabEnv.services['bus_service'].addChannel('beta');
        secondTabEnv.services['bus_service'].addChannel('beta');

        assert.verifySteps([
            "Tab 1: addChannel alpha",
            "Tab 2: addChannel alpha",
            "Tab 1: addChannel beta",
            "Tab 2: addChannel beta",
        ]);
    });

    QUnit.test('two tabs adding a different channel', async function (assert) {
        assert.expect(3);

        const pyEnv = await startServer();
        const firstTabEnv = await makeTestEnv({ activateMockServer: true });
        const secondTabEnv = await makeTestEnv({ activateMockServer: true });
        firstTabEnv.services['bus_service'].addEventListener('notification', ({ detail: notifications }) => {
            assert.step('first - notification - ' + notifications.map(notif => notif.payload).toString());
        });
        secondTabEnv.services['bus_service'].addEventListener('notification', ({ detail: notifications }) => {
            assert.step('second - notification - ' + notifications.map(notif => notif.payload).toString());
        });
        firstTabEnv.services['bus_service'].addChannel("alpha");
        secondTabEnv.services['bus_service'].addChannel("beta");
        await nextTick();
        pyEnv['bus.bus']._sendmany([
            ['alpha', 'notifType', 'alpha'],
            ['beta', 'notifType', 'beta']
        ]);
        await nextTick();

        assert.verifySteps([
            'first - notification - alpha,beta',
            'second - notification - alpha,beta',
        ]);
    });

    QUnit.test('channel management from multiple tabs', async function (assert) {
        patchWebsocketWorkerWithCleanup({
            _sendToServer({ event_name, data }) {
                assert.step(`${event_name} - [${data.channels.toString()}]`);
            },
        });
        const firstTabEnv = await makeTestEnv();
        const secTabEnv = await makeTestEnv();
        firstTabEnv.services['bus_service'].addChannel('channel1');
        await waitForChannels(["channel1"]);
        // this should not trigger a subscription since the channel1 was
        // aleady known.
        secTabEnv.services['bus_service'].addChannel('channel1');
        await waitForChannels(["channel1"]);
        // removing channel1 from first tab should not trigger
        // re-subscription since the second tab still listens to this
        // channel.
        firstTabEnv.services['bus_service'].deleteChannel('channel1');
        await waitForChannels(["channel1"], { operation: "delete" });
        // this should trigger a subscription since the channel2 was not
        // known.
        secTabEnv.services['bus_service'].addChannel('channel2');
        await waitForChannels(["channel2"]);

        assert.verifySteps([
            'subscribe - [channel1]',
            'subscribe - [channel1,channel2]',
        ]);
    });

    QUnit.test('channels subscription after disconnection', async function (assert) {
        // Patch setTimeout in order for the worker to reconnect immediatly.
        patchWithCleanup(window, {
            setTimeout: fn => fn(),
        });
        const firstSubscribeDeferred = makeDeferred();
        const worker = patchWebsocketWorkerWithCleanup({
            _sendToServer({ event_name, data }) {
                assert.step(`${event_name} - [${data.channels.toString()}]`);
                if (event_name === 'subscribe') {
                    firstSubscribeDeferred.resolve();
                }
            },
        });

        const env = await makeTestEnv();
        env.services["bus_service"].start();
        // wait for the websocket to connect and the first subscription
        // to occur.
        await firstSubscribeDeferred;
        worker.websocket.close(WEBSOCKET_CLOSE_CODES.KEEP_ALIVE_TIMEOUT);
        // wait for the websocket to re-connect.
        await nextTick();

        assert.verifySteps([
            'subscribe - []',
            'subscribe - []',
        ]);
    });

    QUnit.test('Last notification id is passed to the worker on service start', async function (assert) {
        const pyEnv = await startServer();
        let updateLastNotificationDeferred = makeDeferred();
        patchWebsocketWorkerWithCleanup({
            _onClientMessage(_, { action, data }) {
                if (action === 'initialize_connection') {
                    assert.step(`${action} - ${data['lastNotificationId']}`);
                    updateLastNotificationDeferred.resolve();
                }
                return this._super(...arguments);
            },
        });
        const env1 = await makeTestEnv();
        await env1.services['bus_service'].start();
        await updateLastNotificationDeferred;
        // First bus service has never received notifications thus the
        // default is 0.
        assert.verifySteps(['initialize_connection - 0']);

        pyEnv['bus.bus']._sendmany([
            ['lambda', 'notifType', 'beta'],
            ['lambda', 'notifType', 'beta'],
        ]);
        // let the bus service store the last notification id.
        await nextTick();

        updateLastNotificationDeferred = makeDeferred();
        const env2 = await makeTestEnv();
        await env2.services['bus_service'].start();
        await updateLastNotificationDeferred;
        // Second bus service sends the last known notification id.
        assert.verifySteps([`initialize_connection - 1`]);
    });

    QUnit.test('Websocket disconnects upon user log out', async function (assert) {
        // first tab connects to the worker with user logged.
        patchWithCleanup(session, {
            user_id: 1,
        });
        const connectionInitializedDeferred = makeDeferred();
        let connectionOpenedDeferred = makeDeferred();
        patchWebsocketWorkerWithCleanup({
            _initializeConnection(client, data) {
                this._super(client, data);
                connectionInitializedDeferred.resolve();
            },
        });

        const firstTabEnv = await makeTestEnv();
        await firstTabEnv.services["bus_service"].start();
        firstTabEnv.services['bus_service'].addEventListener('connect', () => {
            if (session.user_id) {
                assert.step('connect');
            }
            connectionOpenedDeferred.resolve();
            connectionOpenedDeferred = makeDeferred();
        });
        firstTabEnv.services['bus_service'].addEventListener('disconnect', () => {
            assert.step('disconnect');
        });
        await connectionInitializedDeferred;
        await connectionOpenedDeferred;

        // second tab connects to the worker after disconnection: user_id
        // is now false.
        patchWithCleanup(session, {
            user_id: false,
        });
        const env2 = await makeTestEnv();
        await env2.services['bus_service'].start();

        assert.verifySteps([
            'connect',
            'disconnect',
        ]);
    });

    QUnit.test('Websocket reconnects upon user log in', async function (assert) {
        // first tab connects to the worker with no user logged.
        patchWithCleanup(session, {
            user_id: false,
        });
        const connectionInitializedDeferred = makeDeferred();
        let websocketConnectedDeferred = makeDeferred();
        patchWebsocketWorkerWithCleanup({
            _initializeConnection(client, data) {
                this._super(client, data);
                connectionInitializedDeferred.resolve();
            },
        });

        const firstTabEnv = await makeTestEnv();
        await firstTabEnv.services['bus_service'].start();
        firstTabEnv.services['bus_service'].addEventListener('connect', () => {
            assert.step("connect");
            websocketConnectedDeferred.resolve();
            websocketConnectedDeferred = makeDeferred();
        });
        firstTabEnv.services['bus_service'].addEventListener('disconnect', () => {
            assert.step('disconnect');
        });
        await connectionInitializedDeferred;
        await websocketConnectedDeferred;

        // second tab connects to the worker after connection: user_id
        // is now set.
        patchWithCleanup(session, {
            user_id: 1,
        });
        const env = await makeTestEnv();
        await env.services["bus_service"].start();
        await websocketConnectedDeferred;
        assert.verifySteps([
            'connect',
            'disconnect',
            'connect',
        ]);
    });

    QUnit.test("WebSocket connects with URL corresponding to session prefix", async function (assert) {
        patchWebsocketWorkerWithCleanup();
        const origin = "http://random-website.com";
        patchWithCleanup(legacySession, {
            prefix: origin,
        });
        const websocketCreatedDeferred = makeDeferred();
        patchWithCleanup(window, {
            WebSocket: function (url) {
                assert.step(url);
                websocketCreatedDeferred.resolve();
                return new EventTarget();
            },
        }, { pure: true });
        const env = await makeTestEnv();
        env.services["bus_service"].start();
        await websocketCreatedDeferred;
        assert.verifySteps([`${origin.replace("http", "ws")}/websocket`]);
    });

    QUnit.test("Disconnect on offline, re-connect on online", async function (assert) {
        patchWebsocketWorkerWithCleanup();
        let websocketConnectedDeferred = makeDeferred();
        const env = await makeTestEnv();
        env.services["bus_service"].addEventListener("connect", () => {
            assert.step("connect");
            websocketConnectedDeferred.resolve();
            websocketConnectedDeferred = makeDeferred();
        });
        env.services["bus_service"].addEventListener("disconnect", () => assert.step("disconnect"));
        await env.services["bus_service"].start();
        await websocketConnectedDeferred;
        window.dispatchEvent(new Event("offline"));
        await nextTick();
        window.dispatchEvent(new Event("online"));
        await websocketConnectedDeferred;
        assert.verifySteps(["connect", "disconnect", "connect"]);
    });

    QUnit.test("No disconnect on change offline/online when bus inactive", async function (assert) {
        patchWebsocketWorkerWithCleanup();
        const env = await makeTestEnv();
        env.services["bus_service"].addEventListener("connect", () => assert.step("connect"));
        env.services["bus_service"].addEventListener("disconnect", () => assert.step("disconnect"));
        window.dispatchEvent(new Event("offline"));
        await nextTick();
        window.dispatchEvent(new Event("online"));
        await nextTick();
        assert.verifySteps([]);
    });

    QUnit.test("Can reconnect after late close event", async function (assert) {
        let subscribeSent = 0;
        const closeDeferred = makeDeferred();
        let openDeferred = makeDeferred();
        const worker = patchWebsocketWorkerWithCleanup({
            _onWebsocketOpen() {
                this._super();
                openDeferred.resolve();
            },
            _sendToServer({ event_name }) {
                if (event_name === "subscribe") {
                    subscribeSent++;
                }
            },
        });
        const pyEnv = await startServer();
        const env = await makeTestEnv();
        env.services["bus_service"].start();
        await openDeferred;
        patchWithCleanup(worker.websocket, {
            close(code = WEBSOCKET_CLOSE_CODES.CLEAN, reason) {
                this.readyState = 2;
                const _super = this._super;
                if (code === WEBSOCKET_CLOSE_CODES.CLEAN) {
                    closeDeferred.then(() => {
                        // Simulate that the connection could not be closed cleanly.
                        _super(WEBSOCKET_CLOSE_CODES.ABNORMAL_CLOSURE, reason);
                    });
                } else {
                    _super(code, reason);
                }
            },
        });
        env.services["bus_service"].addEventListener("connect", () => assert.step("connect"));
        env.services["bus_service"].addEventListener("disconnect", () => assert.step("disconnect"));
        env.services["bus_service"].addEventListener("reconnecting", () => assert.step("reconnecting"));
        env.services["bus_service"].addEventListener("reconnect", () => assert.step("reconnect"));
        // Connection will be closed when passing offline. But the close event
        // will be delayed to come after the next open event. The connection
        // will thus be in the closing state in the meantime.
        window.dispatchEvent(new Event("offline"));
        await nextTick();
        openDeferred = makeDeferred();
        // Worker reconnects upon the reception of the online event.
        window.dispatchEvent(new Event("online"));
        await openDeferred;
        closeDeferred.resolve();
        // Trigger the close event, it shouldn't have any effect since it is
        // related to an old connection that is no longer in use.
        await nextTick();
        openDeferred = makeDeferred();
        // Server closes the connection, the worker should reconnect.
        pyEnv.simulateConnectionLost(WEBSOCKET_CLOSE_CODES.KEEP_ALIVE_TIMEOUT);
        await openDeferred;
        await nextTick();
        // 3 connections were opened, so 3 subscriptions are expected.
        assert.strictEqual(subscribeSent, 3);
        assert.verifySteps([
            "connect",
            "disconnect",
            "connect",
            "disconnect",
            "reconnecting",
            "reconnect",
        ]);
    });

    QUnit.test(
        "Fallback on simple worker when shared worker failed to initialize",
        async function (assert) {
            const originalSharedWorker = browser.SharedWorker;
            const originalWorker = browser.Worker;
            patchWithCleanup(browser, {
                SharedWorker: function (url, options) {
                    assert.step("shared-worker creation");
                    const sw = new originalSharedWorker(url, options);
                    // Simulate error during shared worker creation.
                    setTimeout(() => sw.dispatchEvent(new Event("error")));
                    return sw;
                },
                Worker: function (url, options) {
                    assert.step("worker creation");
                    return new originalWorker(url, options);
                },
            }, { pure: true });
            patchWithCleanup(window.console, {
                warn(message) {
                    assert.step(message);
                },
            })
            const env = await makeTestEnv();
            await env.services['bus_service'].start();
            assert.verifySteps([
                "shared-worker creation",
                "Error while loading \"bus_service\" SharedWorker, fallback on Worker.",
                "worker creation",
            ]);
        }
    );
});
});