/*
 * Copyright (C) 2013-2015 Apple Inc. All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
 * IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
 * PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
 * HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */

WI.loaded = function()
{
    // Register observers for events from the InspectorBackend.
    // The initialization order should match the same in Main.js.
    InspectorBackend.registerTargetDispatcher(new WI.TargetObserver);
    InspectorBackend.registerInspectorDispatcher(new WI.InspectorObserver);
    InspectorBackend.registerPageDispatcher(new WI.PageObserver);
    InspectorBackend.registerConsoleDispatcher(new WI.ConsoleObserver);
    InspectorBackend.registerNetworkDispatcher(new WI.NetworkObserver);
    InspectorBackend.registerDOMDispatcher(new WI.DOMObserver);
    InspectorBackend.registerDebuggerDispatcher(new WI.DebuggerObserver);
    InspectorBackend.registerHeapDispatcher(new WI.HeapObserver);
    InspectorBackend.registerMemoryDispatcher(new WI.MemoryObserver);
    InspectorBackend.registerDatabaseDispatcher(new WI.DatabaseObserver);
    InspectorBackend.registerDOMStorageDispatcher(new WI.DOMStorageObserver);
    InspectorBackend.registerApplicationCacheDispatcher(new WI.ApplicationCacheObserver);
    InspectorBackend.registerCPUProfilerDispatcher(new WI.CPUProfilerObserver);
    InspectorBackend.registerScriptProfilerDispatcher(new WI.ScriptProfilerObserver);
    InspectorBackend.registerTimelineDispatcher(new WI.TimelineObserver);
    InspectorBackend.registerCSSDispatcher(new WI.CSSObserver);
    InspectorBackend.registerLayerTreeDispatcher(new WI.LayerTreeObserver);
    InspectorBackend.registerRuntimeDispatcher(new WI.RuntimeObserver);
    InspectorBackend.registerWorkerDispatcher(new WI.WorkerObserver);
    InspectorBackend.registerCanvasDispatcher(new WI.CanvasObserver);

    // Instantiate controllers used by tests.
    WI.managers = [
        WI.targetManager = new WI.TargetManager,
        WI.networkManager = new WI.NetworkManager,
        WI.domStorageManager = new WI.DOMStorageManager,
        WI.databaseManager = new WI.DatabaseManager,
        WI.indexedDBManager = new WI.IndexedDBManager,
        WI.domManager = new WI.DOMManager,
        WI.cssManager = new WI.CSSManager,
        WI.consoleManager = new WI.ConsoleManager,
        WI.runtimeManager = new WI.RuntimeManager,
        WI.heapManager = new WI.HeapManager,
        WI.memoryManager = new WI.MemoryManager,
        WI.applicationCacheManager = new WI.ApplicationCacheManager,
        WI.timelineManager = new WI.TimelineManager,
        WI.auditManager = new WI.AuditManager,
        WI.debuggerManager = new WI.DebuggerManager,
        WI.layerTreeManager = new WI.LayerTreeManager,
        WI.workerManager = new WI.WorkerManager,
        WI.domDebuggerManager = new WI.DOMDebuggerManager,
        WI.canvasManager = new WI.CanvasManager,
    ];

    // Register for events.
    document.addEventListener("DOMContentLoaded", WI.contentLoaded);

    // Targets.
    WI.backendTarget = null;
    WI.pageTarget = null;
    WI._targetsAvailablePromise = new WI.WrappedPromise;

    // FIXME: Eliminate `TargetAgent.exists`.
    TargetAgent.exists((error) => {
        if (error)
            WI.targetManager.createDirectBackendTarget();
    });
};

WI.initializeBackendTarget = function(target)
{
    WI.backendTarget = target;

    WI.resetMainExecutionContext();

    WI._targetsAvailablePromise.resolve();
};

WI.initializePageTarget = function(target)
{
    WI.pageTarget = target;

    WI.redirectGlobalAgentsToConnection(WI.pageTarget.connection);

    WI.resetMainExecutionContext();
};

WI.transitionPageTarget = function(target)
{
    console.error("WI.transitionPageTarget should not be reached in tests.");
};

WI.terminatePageTarget = function(target)
{
    console.error("WI.terminatePageTarget should not be reached in tests.");
};

WI.resetMainExecutionContext = function()
{
    if (WI.mainTarget instanceof WI.MultiplexingBackendTarget)
        return;

    if (WI.mainTarget.executionContext)
        WI.runtimeManager.activeExecutionContext = WI.mainTarget.executionContext;
};

WI.redirectGlobalAgentsToConnection = function(connection)
{
    // This makes global window.FooAgent dispatch to the active page target.
    for (let [domain, agent] of Object.entries(InspectorBackend._agents)) {
        if (domain !== "Target")
            agent.connection = connection;
    }
};

WI.contentLoaded = function()
{
    // Things that would normally get called by the UI, that we still want to do in tests.
    WI.applicationCacheManager.enable();
    WI.canvasManager.enable();
    WI.databaseManager.enable();
    WI.domStorageManager.enable();
    WI.heapManager.enable();
    WI.indexedDBManager.enable();
    WI.memoryManager.enable();
    WI.timelineManager.enable();

    // Signal that the frontend is now ready to receive messages.
    WI.whenTargetsAvailable().then(() => {
        InspectorFrontendAPI.loadCompleted();
    });

    // Tell the InspectorFrontendHost we loaded, which causes the window to display
    // and pending InspectorFrontendAPI commands to be sent.
    InspectorFrontendHost.loaded();
};

WI.performOneTimeFrontendInitializationsUsingTarget = function(target)
{
    if (!WI.__didPerformConsoleInitialization && target.ConsoleAgent) {
        WI.__didPerformConsoleInitialization = true;
        WI.consoleManager.initializeLogChannels(target);
    }

    // FIXME: This slows down test debug logging considerably.
    if (!WI.__didPerformCSSInitialization && target.CSSAgent) {
        WI.__didPerformCSSInitialization = true;
        WI.CSSCompletions.initializeCSSCompletions(target);
    }
};

WI.initializeTarget = function(target)
{
};

WI.targetsAvailable = function()
{
    return WI._targetsAvailablePromise.settled;
};

WI.whenTargetsAvailable = function()
{
    return WI._targetsAvailablePromise.promise;
};

Object.defineProperty(WI, "mainTarget",
{
    get() { return WI.pageTarget || WI.backendTarget; }
});

Object.defineProperty(WI, "targets",
{
    get() { return WI.targetManager.targets; }
});

WI.assumingMainTarget = () => WI.mainTarget;

WI.isDebugUIEnabled = () => false;

WI.unlocalizedString = (string) => string;
WI.UIString = (string, key, comment) => string;

WI.indentString = () => "    ";

WI.LayoutDirection = {
    System: "system",
    LTR: "ltr",
    RTL: "rtl",
};

WI.resolvedLayoutDirection = () => { return InspectorFrontendHost.userInterfaceLayoutDirection(); };

// Add stubs that are called by the frontend API.
WI.updateDockedState = () => {};
WI.updateDockingAvailability = () => {};
WI.updateVisibilityState = () => {};

window.InspectorTest = new FrontendTestHarness();

InspectorTest.redirectConsoleToTestOutput();

WI.reportInternalError = (e) => { console.error(e); };

window.reportUnhandledRejection = InspectorTest.reportUnhandledRejection.bind(InspectorTest);
window.onerror = InspectorTest.reportUncaughtExceptionFromEvent.bind(InspectorTest);