/* This Source Code Form is subject to the terms of the Mozilla Public
 * License, v. 2.0. If a copy of the MPL was not distributed with this
 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */

let { Cc, Ci } = require("chrome");
let panels = require('panel');
let tests = {}, panels, Panel;
const { Loader } = require('./helpers');

tests.testPanel = function(test) {
  test.waitUntilDone();
  let panel = Panel({
    contentURL: "about:buildconfig",
    contentScript: "self.postMessage(1); self.on('message', function() self.postMessage(2));",
    onMessage: function (message) {
      test.assertEqual(this, panel, "The 'this' object is the panel.");
      switch(message) {
        case 1:
          test.pass("The panel was loaded.");
          panel.postMessage('');
          break;
        case 2:
          test.pass("The panel posted a message and received a response.");
          panel.destroy();
          test.done();
          break;
      }
    }
  });
};

tests.testPanelEmit = function(test) {
  test.waitUntilDone();
  let panel = Panel({
    contentURL: "about:buildconfig",
    contentScript: "self.port.emit('loaded');" +
                   "self.port.on('addon-to-content', " +
                   "             function() self.port.emit('received'));",
  });
  panel.port.on("loaded", function () {
    test.pass("The panel was loaded and sent a first event.");
    panel.port.emit("addon-to-content");
  });
  panel.port.on("received", function () {
    test.pass("The panel posted a message and received a response.");
    panel.destroy();
    test.done();
  });
};

tests.testPanelEmitEarly = function(test) {
  test.waitUntilDone();
  let panel = Panel({
    contentURL: "about:buildconfig",
    contentScript: "self.port.on('addon-to-content', " +
                   "             function() self.port.emit('received'));",
  });
  panel.port.on("received", function () {
    test.pass("The panel posted a message early and received a response.");
    panel.destroy();
    test.done();
  });
  panel.port.emit("addon-to-content");
};

tests.testShowHidePanel = function(test) {
  test.waitUntilDone();
  let panel = Panel({
    contentScript: "self.postMessage('')",
    contentScriptWhen: "end",
    onMessage: function (message) {
      panel.show();
    },
    onShow: function () {
      test.pass("The panel was shown.");
      test.assertEqual(this, panel, "The 'this' object is the panel.");
      test.assertEqual(this.isShowing, true, "panel.isShowing == true.");
      panel.hide();
    },
    onHide: function () {
      test.pass("The panel was hidden.");
      test.assertEqual(this, panel, "The 'this' object is the panel.");
      test.assertEqual(this.isShowing, false, "panel.isShowing == false.");
      panel.destroy();
      test.done();
    }
  });
};

tests.testDocumentReload = function(test) {
  test.waitUntilDone();
  let content =
    "<script>" +
    "setTimeout(function () {" +
    "  window.location = 'about:blank';" +
    "}, 250);" +
    "</script>";
  let messageCount = 0;
  let panel = Panel({
    contentURL: "data:text/html," + encodeURIComponent(content),
    contentScript: "self.postMessage(window.location.href)",
    onMessage: function (message) {
      messageCount++;
      if (messageCount == 1) {
        test.assertMatches(message, /data:text\/html,/, "First document had a content script");
      }
      else if (messageCount == 2) {
        test.assertEqual(message, "about:blank", "Second document too");
        panel.destroy();
        test.done();
      }
    }
  });
};

tests.testParentResizeHack = function(test) {
  let browserWindow = Cc["@mozilla.org/appshell/window-mediator;1"].
                      getService(Ci.nsIWindowMediator).
                      getMostRecentWindow("navigator:browser");
  let docShell = browserWindow.QueryInterface(Ci.nsIInterfaceRequestor)
                  .getInterface(Ci.nsIWebNavigation)
                  .QueryInterface(Ci.nsIDocShell);
  if (!("allowWindowControl" in docShell)) {
    // bug 635673 is not fixed in this firefox build
    test.pass("allowWindowControl attribute that allow to fix browser window " +
              "resize is not available on this build.");
    return;
  }

  test.waitUntilDone(30000);

  let previousWidth = browserWindow.outerWidth, previousHeight = browserWindow.outerHeight;

  let content = "<script>" +
                "function contentResize() {" +
                "  resizeTo(200,200);" +
                "  resizeBy(200,200);" +
                "}" +
                "</script>" +
                "Try to resize browser window";
  let panel = Panel({
    contentURL: "data:text/html," + encodeURIComponent(content),
    contentScript: "self.on('message', function(message){" +
                   "  if (message=='resize') " +
                   "    unsafeWindow.contentResize();" +
                   "});",
    contentScriptWhen: "ready",
    onMessage: function (message) {

    },
    onShow: function () {
      panel.postMessage('resize');
      require("timer").setTimeout(function () {
        test.assertEqual(previousWidth,browserWindow.outerWidth,"Size doesn't change by calling resizeTo/By/...");
        test.assertEqual(previousHeight,browserWindow.outerHeight,"Size doesn't change by calling resizeTo/By/...");
        panel.destroy();
        test.done();
      },0);
    }
  });
  panel.show();
}

tests.testResizePanel = function(test) {
  test.waitUntilDone();

  // These tests fail on Linux if the browser window in which the panel
  // is displayed is not active.  And depending on what other tests have run
  // before this one, it might not be (the untitled window in which the test
  // runner executes is often active).  So we make sure the browser window
  // is focused by focusing it before running the tests.  Then, to be the best
  // possible test citizen, we refocus whatever window was focused before we
  // started running these tests.

  let activeWindow = Cc["@mozilla.org/embedcomp/window-watcher;1"].
                      getService(Ci.nsIWindowWatcher).
                      activeWindow;
  let browserWindow = Cc["@mozilla.org/appshell/window-mediator;1"].
                      getService(Ci.nsIWindowMediator).
                      getMostRecentWindow("navigator:browser");
  
  
  function onFocus() {
    browserWindow.removeEventListener("focus", onFocus, true);

    let panel = Panel({
      contentScript: "self.postMessage('')",
      contentScriptWhen: "end",
      height: 10,
      width: 10,
      onMessage: function (message) {
        panel.show();
      },
      onShow: function () {
        panel.resize(100,100);
        panel.hide();
      },
      onHide: function () {
        test.assert((panel.width == 100) && (panel.height == 100),
          "The panel was resized.");
        if (activeWindow)
          activeWindow.focus();
        test.done();
      }
    });
  }

  if (browserWindow === activeWindow) {
    onFocus();
  }
  else {
    browserWindow.addEventListener("focus", onFocus, true);
    browserWindow.focus();
  }
};

tests.testHideBeforeShow = function(test) {
  test.waitUntilDone();
  let showCalled = false;
  let panel = Panel({
    onShow: function () {
      showCalled = true;
    },
    onHide: function () {
      test.assert(!showCalled, 'must not emit show if was hidden before');
      test.done();
    }
  });
  panel.show();
  panel.hide();
};

tests.testSeveralShowHides = function(test) {
  test.waitUntilDone();
  let hideCalled = 0;
  let panel = panels.Panel({
    contentURL: "about:buildconfig",
    onShow: function () {
      panel.hide();
    },
    onHide: function () {
      hideCalled++;
      if (hideCalled < 3)
        panel.show();
      else {
        test.pass("onHide called three times as expected");
        test.done();
      }
    }
  });
  panel.on('error', function(e) {
    test.fail('error was emitted:' + e.message + '\n' + e.stack);
  });
  panel.show();
};

tests.testAnchorAndArrow = function(test) {
  test.waitUntilDone(20000);
  let count = 0;
  function newPanel(tab, anchor) {
    let panel = panels.Panel({
      contentURL: "data:text/html,<html><body style='padding: 0; margin: 0; " +
                  "background: gray; text-align: center;'>Anchor: " +
                  anchor.id + "</body></html>",
      width: 200,
      height: 100,
      onShow: function () {
        count++;
        panel.destroy();
        if (count==5) {
          test.pass("All anchored panel test displayed");
          tab.close(function () {
            test.done();
          });
        }
      }
    });
    panel.show(anchor);
  }
  
  let tabs= require("tabs");
  let url = 'data:text/html,' +
    '<html><head><title>foo</title></head><body>' + 
    '<style>div {background: gray; position: absolute; width: 300px; ' +
           'border: 2px solid black;}</style>' +
    '<div id="tl" style="top: 0px; left: 0px;">Top Left</div>' +
    '<div id="tr" style="top: 0px; right: 0px;">Top Right</div>' +
    '<div id="bl" style="bottom: 0px; left: 0px;">Bottom Left</div>' +
    '<div id="br" style="bottom: 0px; right: 0px;">Bottom right</div>' +
    '</body></html>';
  
  tabs.open({
    url: url,
    onReady: function(tab) {
      let browserWindow = Cc["@mozilla.org/appshell/window-mediator;1"].
                      getService(Ci.nsIWindowMediator).
                      getMostRecentWindow("navigator:browser");
      let window = browserWindow.content;
      newPanel(tab, window.document.getElementById('tl'));
      newPanel(tab, window.document.getElementById('tr'));
      newPanel(tab, window.document.getElementById('bl'));
      newPanel(tab, window.document.getElementById('br'));
      let anchor = browserWindow.document.getElementById("identity-box");
      newPanel(tab, anchor);
    }
  });
  
  
  
};

tests.testPanelTextColor = function(test) {
  test.waitUntilDone();
  let html = "<html><head><style>body {color: yellow}</style></head>" +
             "<body><p>Foo</p></body></html>";
  let panel = Panel({
    contentURL: "data:text/html," + encodeURI(html),
    contentScript: "self.port.emit('color', " +
                   "window.getComputedStyle(document.body.firstChild, null). " +
                   "       getPropertyValue('color'));"
  });
  panel.port.on("color", function (color) {
    test.assertEqual(color, "rgb(255, 255, 0)",
      "The panel text color style is preserved when a style exists.");
    panel.destroy();
    test.done();
  });
};

// Bug 696552: Ensure panel.contentURL modification support
tests.testChangeContentURL = function(test) {
  test.waitUntilDone();

  let panel = Panel({
    contentURL: "about:blank",
    contentScript: "self.port.emit('ready', document.location.href);"
  });
  let count = 0;
  panel.port.on("ready", function (location) {
    count++;
    if (count == 1) {
      test.assertEqual(location, "about:blank");
      test.assertEqual(panel.contentURL, "about:blank");
      panel.contentURL = "about:buildconfig";
    }
    else {
      test.assertEqual(location, "about:buildconfig");
      test.assertEqual(panel.contentURL, "about:buildconfig");
      panel.destroy();
      test.done();
    }
  });
};

function makeEventOrderTest(options) {
  let expectedEvents = [];

  return function(test) {
    let panel = panels.Panel({ contentURL: "about:buildconfig" });

    function expect(event, cb) {
      expectedEvents.push(event);
      panel.on(event, function() {
        test.assertEqual(event, expectedEvents.shift());
        if (cb)
          require("timer").setTimeout(cb, 1);
      });
      return {then: expect};
    }

    test.waitUntilDone();
    options.test(test, expect, panel);
  }
}

tests.testAutomaticDestroy = function(test) {
  let loader = Loader(module);
  let panel = loader.require("panel").Panel({
    contentURL: "about:buildconfig",
    contentScript: 
      "self.port.on('event', function() self.port.emit('event-back'));"
  });
  
  loader.unload();
  
  panel.port.on("event-back", function () {
    test.fail("Panel should have been destroyed on module unload");
  });
  panel.port.emit("event");
  test.pass("check automatic destroy");
};

tests.testWaitForInitThenShowThenDestroy = makeEventOrderTest({
  test: function(test, expect, panel) {
    expect('inited', function() { panel.show(); }).
      then('show', function() { panel.destroy(); }).
      then('hide', function() { test.done(); });
  }
});

tests.testShowThenWaitForInitThenDestroy = makeEventOrderTest({
  test: function(test, expect, panel) {
    panel.show();
    expect('inited').
      then('show', function() { panel.destroy(); }).
      then('hide', function() { test.done(); });
  }
});

tests.testShowThenHideThenDestroy = makeEventOrderTest({
  test: function(test, expect, panel) {
    panel.show();
    expect('show', function() { panel.hide(); }).
      then('hide', function() { panel.destroy(); test.done(); });
  }
});

tests.testContentURLOption = function(test) {
  const URL_STRING = "about:buildconfig";
  const HTML_CONTENT = "<html><title>Test</title><p>This is a test.</p></html>";

  let (panel = Panel({ contentURL: URL_STRING })) {
    test.pass("contentURL accepts a string URL.");
    test.assertEqual(panel.contentURL, URL_STRING,
                "contentURL is the string to which it was set.");
  }

  let dataURL = "data:text/html," + encodeURIComponent(HTML_CONTENT);
  let (panel = Panel({ contentURL: dataURL })) {
    test.pass("contentURL accepts a data: URL.");
  }

  let (panel = Panel({})) {
    test.assert(panel.contentURL == null,
                "contentURL is undefined.");
  }

  test.assertRaises(function () Panel({ contentURL: "foo" }),
                    "The `contentURL` option must be a valid URL.",
                    "Panel throws an exception if contentURL is not a URL.");
};

let panelSupported = true;

try {
  panels = require("panel");
  Panel = panels.Panel;
}
catch(ex if ex.message == [
    "The panel module currently supports only Firefox.  In the future ",
    "we would like it to support other applications, however.  Please see ",
    "https://bugzilla.mozilla.org/show_bug.cgi?id=jetpack-panel-apps ",
    "for more information."
  ].join("")) {
  panelSupported = false;
}

if (panelSupported) {
  for (let test in tests)
    exports[test] = tests[test];
}
else {
  exports.testPanelNotSupported = function(test) {
    test.pass("The panel module is not supported on this app.");
  }
}