/* 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/. */

"use stirct";

const { Cc, Ci } = require('chrome');
const timer = require('timer');

function makeWindow(contentURL) {
  let content =
    '<?xml version="1.0"?>' +
    '<window ' +
    'xmlns="http://www.mozilla.org/keymaster/gatekeeper/there.is.only.xul">' +
    '<iframe id="content" type="content" src="' +
      encodeURIComponent(contentURL) + '"/>' +
    '<script>var documentValue=true;</script>' +
    '</window>';
  var url = "data:application/vnd.mozilla.xul+xml," +
            encodeURIComponent(content);
  var features = ["chrome", "width=10", "height=10"];

  return Cc["@mozilla.org/embedcomp/window-watcher;1"].
         getService(Ci.nsIWindowWatcher).
         openWindow(null, url, null, features.join(","), null);
}

const { Worker } = require('content/worker');
exports['test:sample'] = function(test) {
  let window = makeWindow();
  test.waitUntilDone();
  
  // As window has just being created, its document is still loading, 
  // and we have about:blank document before the expected one
  test.assertEqual(window.document.location.href, "about:blank", 
                   "window starts by loading about:blank");
  
  // We need to wait for the load/unload of temporary about:blank
  // or our worker is going to be automatically destroyed
  window.addEventListener("load", function onload() {
    window.removeEventListener("load", onload, true);
    
    test.assertNotEqual(window.document.location.href, "about:blank", 
                        "window is now on the right document");
    
    let worker =  Worker({
      window: window,
      contentScript: 'new ' + function WorkerScope() {
        // window is accessible
        let myLocation = window.location.toString();
        self.on('message', function(data) {
          if (data == 'hi!')
            self.postMessage('bye!');
        });
      },
      contentScriptWhen: 'ready',
      onMessage: function(msg) {
        test.assertEqual('bye!', msg);
        test.assertEqual(worker.url, window.document.location.href, 
                         "worker.url still works");
        test.done();
      }
    });
    
    test.assertEqual(worker.url, window.document.location.href, 
                     "worker.url works");
    worker.postMessage('hi!');
    
  }, true);
  
}

exports['test:emit'] = function(test) {
  let window = makeWindow();
  test.waitUntilDone();
  
  let worker =  Worker({
      window: window,
      contentScript: 'new ' + function WorkerScope() {
        // Validate self.on and self.emit
        self.port.on('addon-to-content', function (data) {
          self.port.emit('content-to-addon', data);
        });
        
        // Check for global pollution
        //if (typeof on != "undefined")
        //  self.postMessage("`on` is in globals");
        if (typeof once != "undefined")
          self.postMessage("`once` is in globals");
        if (typeof emit != "undefined")
          self.postMessage("`emit` is in globals");
        
      },
      onMessage: function(msg) {
        test.fail("Got an unexpected message : "+msg);
      }
    });
  
  // Validate worker.port
  worker.port.on('content-to-addon', function (data) {
    test.assertEqual(data, "event data");
    test.done();
  });
  worker.port.emit('addon-to-content', 'event data');
  
}

exports['test:emit hack message'] = function(test) {
  let window = makeWindow();
  test.waitUntilDone();
  
  let worker =  Worker({
      window: window,
      contentScript: 'new ' + function WorkerScope() {
        // Validate self.port
        self.port.on('message', function (data) {
          self.port.emit('message', data);
        });
        // We should not receive message on self, but only on self.port
        self.on('message', function (data) {
          self.postMessage('message', data);
        });
      },
      onError: function(e) {
        test.fail("Got exception: "+e);
      }
    });
  
  worker.port.on('message', function (data) {
    test.assertEqual(data, "event data");
    test.done();
  });
  worker.on('message', function (data) {
    test.fail("Got an unexpected message : "+msg);
  });
  worker.port.emit('message', 'event data');
  
}

exports['test:n-arguments emit'] = function(test) {
  let window = makeWindow();
  test.waitUntilDone();
  
  let worker =  Worker({
      window: window,
      contentScript: 'new ' + function WorkerScope() {
        // Validate self.on and self.emit
        self.port.on('addon-to-content', function (a1, a2, a3) {
          self.port.emit('content-to-addon', a1, a2, a3);
        });
      }
    });
  
  // Validate worker.port
  worker.port.on('content-to-addon', function (arg1, arg2, arg3) {
    test.assertEqual(arg1, "first argument");
    test.assertEqual(arg2, "second");
    test.assertEqual(arg3, "third");
    test.done();
  });
  worker.port.emit('addon-to-content', 'first argument', 'second', 'third');
}

exports['test:post-json-values-only'] = function(test) {
  let window = makeWindow("data:text/html,");
  test.waitUntilDone();
  
  window.addEventListener("load", function onload() {
    window.removeEventListener("load", onload, true);

    let worker =  Worker({
        window: window.document.getElementById("content").contentWindow,
        contentScript: 'new ' + function WorkerScope() {
          self.on('message', function (message) {
            self.postMessage([ message.fun === undefined,
                               typeof message.w,
                               message.w && "port" in message.w,
                               message.w.url,
                               Array.isArray(message.array),
                               JSON.stringify(message.array)]);
          });
        }
      });

    // Validate worker.onMessage
    let array = [1, 2, 3];
    worker.on('message', function (message) {
      test.assert(message[0], "function becomes undefined");
      test.assertEqual(message[1], "object", "object stays object");
      test.assert(message[2], "object's attributes are enumerable");
      test.assertEqual(message[3], "about:blank", "jsonable attributes are accessible");
      // See bug 714891, Arrays may be broken over compartements:
      test.assert(message[4], "Array keeps being an array");
      test.assertEqual(message[5], JSON.stringify(array),
                       "Array is correctly serialized");
      test.done();
    });
    worker.postMessage({ fun: function () {}, w: worker, array: array });

  }, true);

};

exports['test:emit-json-values-only'] = function(test) {
  let window = makeWindow("data:text/html,");
  test.waitUntilDone();
  
  window.addEventListener("load", function onload() {
    window.removeEventListener("load", onload, true);
  
    let win = window.document.getElementById("content").contentWindow;
    let worker =  Worker({
        window: win,
        contentScript: 'new ' + function WorkerScope() {
          // Validate self.on and self.emit
          self.port.on('addon-to-content', function (fun, w, obj, array) {
            self.port.emit('content-to-addon', [
                            fun === null,
                            typeof w,
                            "port" in w,
                            w.url,
                            "fun" in obj,
                            Object.keys(obj.dom).length,
                            Array.isArray(array),
                            JSON.stringify(array)
                          ]);
          });
        }
      });
    
    // Validate worker.port
    let array = [1, 2, 3];
    worker.port.on('content-to-addon', function (result) {
      test.assert(result[0], "functions become null");
      test.assertEqual(result[1], "object", "objects stay objects");
      test.assert(result[2], "object's attributes are enumerable");
      test.assertEqual(result[3], "about:blank", "json attribute is accessible");
      test.assert(!result[4], "function as object attribute is removed");
      test.assertEqual(result[5], 0, "DOM nodes are converted into empty object");
      // See bug 714891, Arrays may be broken over compartements:
      test.assert(result[6], "Array keeps being an array");
      test.assertEqual(result[7], JSON.stringify(array),
                       "Array is correctly serialized");
      test.done();
    });
    let obj = {
      fun: function () {},
      dom: win.document.documentElement
    };
    worker.port.emit('addon-to-content', function () {}, worker, obj, array);

  }, true);

}

exports['test:content is wrapped'] = function(test) {
  let contentURL = 'data:text/html,<script>var documentValue=true;</script>';
  let window = makeWindow(contentURL);
  test.waitUntilDone();

  window.addEventListener("load", function onload() {
    window.removeEventListener("load", onload, true);

    let worker =  Worker({
      window: window.document.getElementById("content").contentWindow,
      contentScript: 'new ' + function WorkerScope() {
        self.postMessage(!window.documentValue);
      },
      contentScriptWhen: 'ready',
      onMessage: function(msg) {
        test.assert(msg,
          "content script has a wrapped access to content document");
        test.done();
      }
    });

  }, true);

}

exports['test:chrome is unwrapped'] = function(test) {
  let window = makeWindow();
  test.waitUntilDone();

  window.addEventListener("load", function onload() {
    window.removeEventListener("load", onload, true);

    let worker =  Worker({
      window: window,
      contentScript: 'new ' + function WorkerScope() {
        self.postMessage(window.documentValue);
      },
      contentScriptWhen: 'ready',
      onMessage: function(msg) {
        test.assert(msg,
          "content script has an unwrapped access to chrome document");
        test.done();
      }
    });

  }, true);

}

exports['test:setTimeout can\'t be cancelled by content'] = function(test) {
  let contentURL = 'data:text/html,<script>var documentValue=true;</script>';
  let window = makeWindow(contentURL);
  test.waitUntilDone();

  window.addEventListener("load", function onload() {
    window.removeEventListener("load", onload, true);

    let worker =  Worker({
      window: window.document.getElementById("content").contentWindow,
      contentScript: 'new ' + function WorkerScope() {
        let id = setTimeout(function () {
          self.postMessage("timeout");
        }, 100);
        unsafeWindow.eval("clearTimeout("+id+");");
      },
      contentScriptWhen: 'ready',
      onMessage: function(msg) {
        test.assert(msg,
          "content didn't managed to cancel our setTimeout");
        test.done();
      }
    });

  }, true);

}

exports['test:setTimeout are unregistered on content unload'] = function(test) {
  let contentURL = 'data:text/html,foo';
  let window = makeWindow(contentURL);
  test.waitUntilDone();

  window.addEventListener("load", function onload() {
    window.removeEventListener("load", onload, true);

    let iframe = window.document.getElementById("content");
    let originalDocument = iframe.contentDocument;
    let worker =  Worker({
      window: iframe.contentWindow,
      contentScript: 'new ' + function WorkerScope() {
        document.title = "ok";
        let i = 0;
        setInterval(function () {
          document.title = i++;
        }, 10);
      },
      contentScriptWhen: 'ready'
    });

    // Change location so that content script is destroyed,
    // and all setTimeout/setInterval should be unregistered.
    // Wait some cycles in order to execute some intervals.
    timer.setTimeout(function () {
      // Bug 689621: Wait for the new document load so that we are sure that
      // previous document cancelled its intervals
      iframe.addEventListener("load", function onload() {
        iframe.removeEventListener("load", onload, true);
        let titleAfterLoad = originalDocument.title;
        // Wait additional cycles to verify that intervals are really cancelled
        timer.setTimeout(function () {
          test.assertEqual(iframe.contentDocument.title, "final",
                           "New document has not been modified");
          test.assertEqual(originalDocument.title, titleAfterLoad,
                           "Nor previous one");
          test.done();
        }, 100);
      }, true);
      iframe.setAttribute("src", "data:text/html,<title>final</title>");
    }, 100);

  }, true);

}
