'use strict';

SimpleTest.waitForExplicitFinish();
SimpleTest.requestFlakyTimeout('Test for guarantee not firing async event');

function debug(str) {
  // info(str);
}

var gScript = SpecialPowers.loadChromeScript(SimpleTest.getTestFileURL('PresentationSessionChromeScript1UA.js'));
var receiverUrl = SimpleTest.getTestFileURL('file_presentation_1ua_wentaway.html');
var request;
var connection;
var receiverIframe;

function setup() {
  gScript.addMessageListener('device-prompt', function devicePromptHandler() {
    debug('Got message: device-prompt');
    gScript.removeMessageListener('device-prompt', devicePromptHandler);
    gScript.sendAsyncMessage('trigger-device-prompt-select');
  });

  gScript.addMessageListener('control-channel-established', function controlChannelEstablishedHandler() {
    gScript.removeMessageListener('control-channel-established',
                                  controlChannelEstablishedHandler);
    gScript.sendAsyncMessage("trigger-control-channel-open");
  });

  gScript.addMessageListener('sender-launch', function senderLaunchHandler(url) {
    debug('Got message: sender-launch');
    gScript.removeMessageListener('sender-launch', senderLaunchHandler);
    is(url, receiverUrl, 'Receiver: should receive the same url');
    receiverIframe = document.createElement('iframe');
    receiverIframe.setAttribute("mozbrowser", "true");
    receiverIframe.setAttribute("mozpresentation", receiverUrl);
    var oop = !location.pathname.includes('_inproc');
    receiverIframe.setAttribute("remote", oop);

    receiverIframe.setAttribute('src', receiverUrl);
    receiverIframe.addEventListener("mozbrowserloadend", function() {
      info("Receiver loaded.");
    }, {once: true});

    // This event is triggered when the iframe calls "alert".
    receiverIframe.addEventListener("mozbrowsershowmodalprompt", function receiverListener(evt) {
      var message = evt.detail.message;
      if (/^OK /.exec(message)) {
        ok(true, message.replace(/^OK /, ""));
      } else if (/^KO /.exec(message)) {
        ok(false, message.replace(/^KO /, ""));
      } else if (/^INFO /.exec(message)) {
        info(message.replace(/^INFO /, ""));
      } else if (/^COMMAND /.exec(message)) {
        var command = JSON.parse(message.replace(/^COMMAND /, ""));
        gScript.sendAsyncMessage(command.name, command.data);
      } else if (/^DONE$/.exec(message)) {
        receiverIframe.removeEventListener("mozbrowsershowmodalprompt",
                                            receiverListener);
        teardown();
      }
    });

    var promise = new Promise(function(aResolve, aReject) {
      document.body.appendChild(receiverIframe);
      aResolve(receiverIframe);
    });

    var obs = SpecialPowers.Cc["@mozilla.org/observer-service;1"]
                           .getService(SpecialPowers.Ci.nsIObserverService);
    obs.notifyObservers(promise, 'setup-request-promise');
  });

  gScript.addMessageListener('promise-setup-ready', function promiseSetupReadyHandler() {
    debug('Got message: promise-setup-ready');
    gScript.removeMessageListener('promise-setup-ready',
                                  promiseSetupReadyHandler);
    gScript.sendAsyncMessage('trigger-on-session-request', receiverUrl);
  });

  return Promise.resolve();
}

function testCreateRequest() {
  return new Promise(function(aResolve, aReject) {
    info('Sender: --- testCreateRequest ---');
    request = new PresentationRequest(receiverUrl);
    request.getAvailability().then((aAvailability) => {
      is(aAvailability.value, false, "Sender: should have no available device after setup");
      aAvailability.onchange = function() {
        aAvailability.onchange = null;
        ok(aAvailability.value, "Sender: Device should be available.");
        aResolve();
      }

      gScript.sendAsyncMessage('trigger-device-add');
    }).catch((aError) => {
      ok(false, "Sender: Error occurred when getting availability: " + aError);
      teardown();
      aReject();
    });
  });
}

function testStartConnection() {
  return new Promise(function(aResolve, aReject) {
    request.start().then((aConnection) => {
      connection = aConnection;
      ok(connection, "Sender: Connection should be available.");
      ok(connection.id, "Sender: Connection ID should be set.");
      is(connection.state, "connecting", "Sender: The initial state should be connecting.");
      connection.onconnect = function() {
        connection.onconnect = null;
        is(connection.state, "connected", "Connection should be connected.");
        aResolve();
      };
    }).catch((aError) => {
      ok(false, "Sender: Error occurred when establishing a connection: " + aError);
      teardown();
      aReject();
    });
  });
}

function testConnectionWentaway() {
  return new Promise(function(aResolve, aReject) {
    info('Sender: --- testConnectionWentaway ---');
    connection.onclose = function() {
      connection.onclose = null;
      is(connection.state, "closed", "Sender: Connection should be closed.");
      receiverIframe.addEventListener('mozbrowserclose', function closeHandler() {
        ok(false, 'wentaway should not trigger receiver close');
        aResolve();
      });
      setTimeout(aResolve, 3000);
    };
    gScript.addMessageListener('ready-to-remove-receiverFrame', function onReadyToRemove() {
      gScript.removeMessageListener('ready-to-remove-receiverFrame', onReadyToRemove);
      receiverIframe.src = "http://example.com";
    });
  });
}

function teardown() {
  gScript.addMessageListener('teardown-complete', function teardownCompleteHandler() {
    debug('Got message: teardown-complete');
    gScript.removeMessageListener('teardown-complete', teardownCompleteHandler);
    gScript.destroy();
    SimpleTest.finish();
  });

  gScript.sendAsyncMessage('teardown');
}

function runTests() {
  setup().then(testCreateRequest)
         .then(testStartConnection)
         .then(testConnectionWentaway)
         .then(teardown);
}

SpecialPowers.pushPermissions([
  {type: 'presentation-device-manage', allow: false, context: document},
  {type: "browser", allow: true, context: document},
], () => {
  SpecialPowers.pushPrefEnv({ 'set': [["dom.presentation.enabled", true],
                                      ["dom.presentation.controller.enabled", true],
                                      ["dom.presentation.receiver.enabled", true],
                                      ["dom.presentation.test.enabled", true],
                                      ["dom.mozBrowserFramesEnabled", true],
                                      ["dom.ipc.tabs.disabled", false],
                                      ["network.disable.ipc.security", true],
                                      ["dom.presentation.test.stage", 0]]},
                            runTests);
});