/* Any copyright is dedicated to the Public Domain.
   http://creativecommons.org/publicdomain/zero/1.0/ */

"use strict";

// Test the TargetCommand API with all possible descriptors

const TEST_URL = "https://example.org/document-builder.sjs?html=org";
const SECOND_TEST_URL = "https://example.com/document-builder.sjs?html=org";
const CHROME_WORKER_URL = CHROME_URL_ROOT + "test_worker.js";

const DESCRIPTOR_TYPES = require("resource://devtools/client/fronts/descriptors/descriptor-types.js");

add_task(async function () {
  // Enabled fission prefs
  await pushPref("devtools.browsertoolbox.scope", "everything");
  // Disable the preloaded process as it gets created lazily and may interfere
  // with process count assertions
  await pushPref("dom.ipc.processPrelaunch.enabled", false);
  // This preference helps destroying the content process when we close the tab
  await pushPref("dom.ipc.keepProcessesAlive.web", 1);

  await testLocalTab();
  await testRemoteTab();
  await testParentProcess();
  await testWorker();
  await testWebExtension();
});

async function testParentProcess() {
  info("Test TargetCommand against parent process descriptor");

  const commands = await CommandsFactory.forMainProcess();
  const { descriptorFront } = commands;

  is(
    descriptorFront.descriptorType,
    DESCRIPTOR_TYPES.PROCESS,
    "The descriptor type is correct"
  );
  is(
    descriptorFront.isParentProcessDescriptor,
    true,
    "Descriptor front isParentProcessDescriptor is correct"
  );
  is(
    descriptorFront.isProcessDescriptor,
    true,
    "Descriptor front isProcessDescriptor is correct"
  );

  const targetCommand = commands.targetCommand;
  await targetCommand.startListening();

  const targets = await targetCommand.getAllTargets(targetCommand.ALL_TYPES);
  Assert.greater(
    targets.length,
    1,
    "We get many targets when debugging the parent process"
  );
  const targetFront = targets[0];
  is(targetFront, targetCommand.targetFront, "The first is the top level one");
  is(
    targetFront.targetType,
    targetCommand.TYPES.FRAME,
    "the parent process target is of frame type, because it inherits from WindowGlobalTargetActor"
  );
  is(targetFront.isTopLevel, true, "This is flagged as top level");

  targetCommand.destroy();
  await waitForAllTargetsToBeAttached(targetCommand);

  await commands.destroy();
}

async function testLocalTab() {
  info("Test TargetCommand against local tab descriptor (via getTab({ tab }))");

  const tab = await addTab(TEST_URL);
  const commands = await CommandsFactory.forTab(tab);
  const { descriptorFront } = commands;
  is(
    descriptorFront.descriptorType,
    DESCRIPTOR_TYPES.TAB,
    "The descriptor type is correct"
  );
  is(
    descriptorFront.isTabDescriptor,
    true,
    "Descriptor front isTabDescriptor is correct"
  );

  const targetCommand = commands.targetCommand;
  await targetCommand.startListening();

  const targets = await targetCommand.getAllTargets(targetCommand.ALL_TYPES);
  is(targets.length, 1, "Got a unique target");
  const targetFront = targets[0];
  is(targetFront, targetCommand.targetFront, "The first is the top level one");
  is(
    targetFront.targetType,
    targetCommand.TYPES.FRAME,
    "the tab target is of frame type"
  );
  is(targetFront.isTopLevel, true, "This is flagged as top level");

  targetCommand.destroy();

  BrowserTestUtils.removeTab(tab);

  await commands.destroy();
}

async function testRemoteTab() {
  info(
    "Test TargetCommand against remote tab descriptor (via getTab({ browserId }))"
  );

  const tab = await addTab(TEST_URL);
  const commands = await CommandsFactory.forRemoteTab(
    tab.linkedBrowser.browserId
  );
  const { descriptorFront } = commands;
  is(
    descriptorFront.descriptorType,
    DESCRIPTOR_TYPES.TAB,
    "The descriptor type is correct"
  );
  is(
    descriptorFront.isTabDescriptor,
    true,
    "Descriptor front isTabDescriptor is correct"
  );

  const targetCommand = commands.targetCommand;
  await targetCommand.startListening();

  const targets = await targetCommand.getAllTargets(targetCommand.ALL_TYPES);
  is(targets.length, 1, "Got a unique target");
  const targetFront = targets[0];
  is(
    targetFront,
    targetCommand.targetFront,
    "TargetCommand top target is the same as the first target"
  );
  is(
    targetFront.targetType,
    targetCommand.TYPES.FRAME,
    "the tab target is of frame type"
  );
  is(targetFront.isTopLevel, true, "This is flagged as top level");

  const browser = tab.linkedBrowser;
  const onLoaded = BrowserTestUtils.browserLoaded(browser);
  BrowserTestUtils.startLoadingURIString(browser, SECOND_TEST_URL);
  await onLoaded;

  info("Wait for the new target");
  await waitFor(() => targetCommand.targetFront != targetFront);
  isnot(
    targetCommand.targetFront,
    targetFront,
    "The top level target changes on navigation"
  );
  ok(
    !targetCommand.targetFront.isDestroyed(),
    "The new target isn't destroyed"
  );
  ok(targetFront.isDestroyed(), "While the previous target is destroyed");

  targetCommand.destroy();

  BrowserTestUtils.removeTab(tab);

  await commands.destroy();
}

async function testWebExtension() {
  info("Test TargetCommand against webextension descriptor");

  const extension = ExtensionTestUtils.loadExtension({
    useAddonManager: "temporary",
    manifest: {
      name: "Sample extension",
    },
  });

  await extension.startup();

  const commands = await CommandsFactory.forAddon(extension.id);
  const { descriptorFront } = commands;
  is(
    descriptorFront.descriptorType,
    DESCRIPTOR_TYPES.EXTENSION,
    "The descriptor type is correct"
  );
  is(
    descriptorFront.isWebExtensionDescriptor,
    true,
    "Descriptor front isWebExtensionDescriptor is correct"
  );

  const targetCommand = commands.targetCommand;
  await targetCommand.startListening();

  const targets = await targetCommand.getAllTargets(targetCommand.ALL_TYPES);
  is(targets.length, 1, "Got a unique target");
  const targetFront = targets[0];
  is(targetFront, targetCommand.targetFront, "The first is the top level one");
  is(
    targetFront.targetType,
    targetCommand.TYPES.FRAME,
    "the web extension target is of frame type, because it inherits from WindowGlobalTargetActor"
  );
  is(targetFront.isTopLevel, true, "This is flagged as top level");

  targetCommand.destroy();

  await extension.unload();

  await commands.destroy();
}

// CommandsFactory expect the worker id, which is computed from the nsIWorkerDebugger.id attribute
function getNextWorkerDebuggerId() {
  return new Promise(resolve => {
    const wdm = Cc[
      "@mozilla.org/dom/workers/workerdebuggermanager;1"
    ].createInstance(Ci.nsIWorkerDebuggerManager);
    const listener = {
      onRegister(dbg) {
        wdm.removeListener(listener);
        resolve(dbg.id);
      },
    };
    wdm.addListener(listener);
  });
}
async function testWorker() {
  info("Test TargetCommand against worker descriptor");

  const workerUrl = CHROME_WORKER_URL + "#descriptor";
  const onNextWorker = getNextWorkerDebuggerId();
  const worker = new Worker(workerUrl);
  const workerId = await onNextWorker;
  ok(workerId, "Found the worker Debugger ID");

  const commands = await CommandsFactory.forWorker(workerId);
  const { descriptorFront } = commands;
  is(
    descriptorFront.descriptorType,
    DESCRIPTOR_TYPES.WORKER,
    "The descriptor type is correct"
  );
  is(
    descriptorFront.isWorkerDescriptor,
    true,
    "Descriptor front isWorkerDescriptor is correct"
  );

  const targetCommand = commands.targetCommand;
  await targetCommand.startListening();

  const targets = await targetCommand.getAllTargets(targetCommand.ALL_TYPES);
  is(targets.length, 1, "Got a unique target");
  const targetFront = targets[0];
  is(targetFront, targetCommand.targetFront, "The first is the top level one");
  is(
    targetFront.targetType,
    targetCommand.TYPES.WORKER,
    "the worker target is of worker type"
  );
  is(targetFront.isTopLevel, true, "This is flagged as top level");

  targetCommand.destroy();

  // Calling CommandsFactory.forWorker, will call RootFront.getWorker
  // which will spawn lots of worker legacy code, firing lots of requests,
  // which may still be pending
  await commands.waitForRequestsToSettle();

  await commands.destroy();
  worker.terminate();
}