// KeymanWeb test suite - processing of the Karma configuration's client.args parameter.

com = com || {};
com.keyman = com.keyman || {};
com.keyman.karma = com.keyman.karma || {};
com.keyman.karma.DEVICE_DETECT_FAILURE = false;

(function() {
  // Default value in case of device-detection failure.
  var mobile = false;

  try {
    var device = new com.keyman.Device();
    device.detect();

    mobile = (device.formFactor != 'desktop');
  } catch (err) {
    // Sets a warning flag that unit-test files can use to disable themselves.
    com.keyman.karma.DEVICE_DETECT_FAILURE = true;
  }

  var kmwconfig = window['kmwconfig'] = {mobile: mobile};

  var configArgs = window['__karma__'].config.args;  // Where Karma gives us our custom args.
  for(var i = 0; i < configArgs.length; configArgs++) {
    switch(configArgs[i].type) {
      case 'timeouts':
        var timeouts = JSON.parse(JSON.stringify(configArgs[i]));
        delete timeouts.type;

        if(mobile) {
          for(var key in timeouts) {
            if(key != 'mobileFactor') {
              timeouts[key] = timeouts[key] * timeouts['mobileFactor'];
            }
          }
        }
        kmwconfig['timeouts'] = timeouts;
        break;
    }
  }
})();

// Keyman test suite utility methods

var setupKMW = function(kmwOptions, done, timeout, uiInitCheck) {
  var ui;

  if(typeof(kmwOptions) == 'string' || typeof(kmwOptions) == 'undefined' || kmwOptions == null) {
    ui = kmwOptions;

    var kmwOptions = {
      attachType:'auto',
      root:'source',
      resources:'../../../../source'
    };
  
    if(ui) {
      kmwOptions.ui = ui;
    }
  }

  var kmw = setupScript('source/keymanweb.js', done, timeout, uiInitCheck);
  fixture.el.appendChild(kmw);

  ui = kmwOptions.ui;

  kmwOptions.attachType = kmwOptions.attachType ? kmwOptions.attachType : 'auto';
  
  if(!kmwOptions.root) {
    kmwOptions.root = 'source';
  }

  if(!kmwOptions.resources) {
    kmwOptions.resources = '../../../../source';
  }

  if(ui) {
    var ui = setupScript('source/kmwui' + ui + '.js');
    fixture.el.appendChild(ui);

    kmwOptions.ui=ui;
  }

  var initFunc = function() {
    if(window['keyman']) {
      window['keyman'].init(kmwOptions);
    } else {
      window.setTimeout(function() {
        initFunc();
      })
    }
  };

  /* Keep this timeout short - if set too long, kmwinit's default initialization
   * will kick in and prevent our settings from going through!
   */
  window.setTimeout(function() {
    initFunc();
  }, 5);
}

var setupScript = function(src, done, timeout, uiInitCheck) {
  var Lscript = document.createElement('script');
  Lscript.charset="UTF-8";        // KMEW-89
  Lscript.type = 'text/javascript';
  Lscript.async = false;
  if(done) {
    Lscript.onload = initTimer(done, timeout, uiInitCheck);
  }

  Lscript.src = src;

  return Lscript;
}

var teardownKMW = function() {
  var error = null;
  if(keyman) { // If our setupKMW fails somehow, this guard prevents a second error report on teardown.

    // We want to be SURE teardown works correctly, or we'll get lots of strange errors on other tests.
    // Thus, error-handling on shutdown itself.  It HAS mattered.
    try {
      keyman['shutdown']();
    } catch(err) {
      error = err;
    }

    try {
      var success = delete window["keyman"];
      if(!success) {
        window["keyman"] = undefined;
      }
    } finally {
      if(error) {
        console.log("Error during KMW shutdown!");
        throw error;
      }
    }
  }
}

// Make sure the main script loads...
var initTimer = function(done, timeout, uiInitCheck) {
  var uiLoadDelay;
  if(typeof(uiInitCheck) != 'function') {
    uiInitCheck = function() { return true; };
    uiLoadDelay = false;
  } else {
    uiLoadDelay = true;
  }

  // We need managed state for this.
  var InitializationManager = function() {
    this.killSwitch = false;

    this.initCheckCallback = function() {
      if(window['keyman'] && window['keyman'].initialized == 2 && uiInitCheck()) {
        if(done) {
          this.timer = window.setTimeout(function() { 
            // There can be some odd cross-interference with the UI modules and their initialization.
            // We use a significant delay here to avoid said problems.
            done();
          }, uiLoadDelay ? 2000 : 0);
        }
      } else if(!this.killSwitch) {
        this.timer = window.setTimeout(this.initCheckCallback, 50);
      }
    }.bind(this);

    if(timeout) {
      window.setTimeout(function() {
        this.killSwitch = true;

        if(this.timer) {
          window.clearTimeout(this.timer);
          this.timer = 0;
        }
      }.bind(this), timeout);
    }
  }

  var im = new InitializationManager();
  return im.initCheckCallback;
};

// Make sure the main script loads...
var onScriptLoad = function(scriptURL, callback, timeout) {
  var ScriptLoadObserver = function() {
    this.target = document.createElement('a');
    this.target.href = scriptURL;

    if(timeout) {
      this.timer = window.setTimeout(function() {
        if(this.mo) {
          this.mo.disconnect();
        }
      }.bind(this), timeout);
    }

    var moCallback = function(mutations) {
      for(var i=0; i < mutations.length; i++) {
        var mutation = mutations[i];
        for(var j=0; j < mutation.addedNodes.length; j++) {
          var child = mutation.addedNodes[j];
          if(child instanceof HTMLScriptElement) {
            if(child.src == this.target.href) {
              child.onload = callback;
            }
          }
        }
      }
    }

    this.observe = function() {
      var config = { childList: true, subtree: true };
      this.mo = new MutationObserver(moCallback.bind(this));
      this.mo.observe(document, config);
    }
  }

  var slo = new ScriptLoadObserver();
  slo.observe();
};

var loadKeyboardStub = function(stub, callback, timeout, params) {
  var kbdName = "Keyboard_" + stub.id;

  keyman.addKeyboards(stub);
  if(!params || !params.passive) {
    keyman.setActiveKeyboard(kbdName, stub.languages.id);
  }

  if(keyman.getActiveKeyboard() != kbdName) {
    onScriptLoad(stub.filename, function() {
      callback();
    }, timeout);
  } else {
    callback();
  }
}

var loadKeyboardFromJSON = function(jsonPath, callback, timeout) {
  var stub = fixture.load(jsonPath, true);

  loadKeyboardStub(stub, callback, timeout);
}

function runLoadedKeyboardTest(testDef, usingOSK, assertCallback) {
  var inputElem = document.getElementById('singleton');
    if(inputElem['kmw_ip']) {
      inputElem = inputElem['kmw_ip'];
    }

    testDef.run(inputElem, usingOSK, assertCallback);
}

function runKeyboardTestFromJSON(jsonPath, params, callback, assertCallback, timeout) {
  var testSpec = new KMWRecorder.KeyboardTest(fixture.load(jsonPath, true));

  loadKeyboardStub(testSpec.keyboard, function() {
    runLoadedKeyboardTest(testSpec, params.usingOSK, assertCallback);
    keyman.removeKeyboards(testSpec.keyboard.id);
    callback();
  }, timeout);
}

function retrieveAndReset(Pelem) {
  var alias = Pelem['kmw_ip'];
  var val = "";
  if(alias) {
    val = alias.textContent;
    alias.setText("", 0);
  } else {
    val = Pelem.value;
    Pelem.value = "";
  }

  return val;
}

// Useful for tests related to strings with supplementary pairs.
var toSupplementaryPairString = function(code){
  var H = Math.floor((code - 0x10000) / 0x400) + 0xD800;
  var L = (code - 0x10000) % 0x400 + 0xDC00;

  return String.fromCharCode(H, L);
}

var toEscapedSupplementaryPairString = function(code){
  var H = (Math.floor((code - 0x10000) / 0x400) + 0xD800).toString(16);
  var L = ((code - 0x10000) % 0x400 + 0xDC00).toString(16);

  return "\\u"+H+"\\u"+L;
}

// Defines an object for dynamically adding elements for testing purposes.
// Designed for use with the robustAttachment.html fixture.

var DynamicElements;
var inputCounter = 0;

if(typeof(DynamicElements) == 'undefined') {
  DynamicElements = {};

  DynamicElements.addInput = function() {
    var masterDiv = document.getElementById('DynamicElements');
    var newInput = document.createElement("input");
    var i = inputCounter++;
    
    newInput.id = 'input' + i;
    newInput.className = 'test';
    newInput.placeholder = "Dynamic area #" + i + "!";
    
    masterDiv.appendChild(newInput);
    return newInput.id;
  }
  
  DynamicElements.addText = function () {
    var masterDiv = document.getElementById('DynamicElements');
    var newTextArea = document.createElement("textarea");
    var i = inputCounter++;
    
    newTextArea.id = 'textarea' + i;
    newTextArea.className = 'test';
    newTextArea.placeholder = "Dynamic area #" + i + "!";
    
    masterDiv.appendChild(newTextArea);
    return newTextArea.id;
  }
  
  DynamicElements.addIFrame = function(loadCallback) {
    var masterDiv = document.getElementById('DynamicElements');
    var frame = document.createElement("iframe");
    var i = inputCounter++;
    
    frame.height = "100";
    frame.id = 'iframe' + i;
    if(loadCallback) {
      frame.addEventListener('load', function() {
        // Give KMW's attachment events a chance to run first.
        window.setTimeout(loadCallback, Math.max(100, kmwconfig.timeouts.scriptLoad));
      });
    }
    frame.setAttribute("src", "resources/html/iframe.html");
      
    masterDiv.appendChild(frame);
    return frame.id;
  }

  DynamicElements.addDesignIFrame = function(loadCallback) {
    var masterDiv = document.getElementById('DynamicElements');
    var frame = document.createElement("iframe");
    var i = inputCounter++;
    
    frame.height = "100";
    frame.id = 'designIFrame' + i;
    frame.src = "resources/html/editableFrame.html";
    
    if(loadCallback) {
      frame.addEventListener('load', function() {
        loadCallback();
      });
    }
      
    masterDiv.appendChild(frame);
    return frame.id;
  }
  
  DynamicElements.addEditable = function() {
    var masterDiv = document.getElementById('DynamicElements');
    var editable = document.createElement("div");
    var i = inputCounter++;
    
    editable.contentEditable = true;
    editable.textContent = "Edit me!";
    editable.id = 'editable' + i;
    editable.style.width="500px";
    
    masterDiv.appendChild(editable);
    return editable.id;
  }

  // base: takes an optional element to use as the touch alias's ['base'] property.
  DynamicElements.addTouchAlias = function(base) {
    var masterDiv = document.getElementById('DynamicElements');
    var touchAlias = com.keyman.dom.constructTouchAlias(base);
    var i = inputCounter++;

    touchAlias.id = 'touchAlias' + i;

    masterDiv.appendChild(touchAlias);
    return touchAlias.id;
  }

  DynamicElements.assertAttached = function(ele, done) {
    var assertion = function() {
      assert.isTrue(keyman.isAttached(ele), "Element tag '" + ele.tagName + "', id '" + ele.id + "' was not attached!");
    }
    if(done) {
      window.setTimeout(function() {
        assertion();
        done();
      }, kmwconfig.timeouts.eventDelay);
    } else {
      assertion();
    }
  }

  DynamicElements.assertDetached = function(ele, done) {
    var assertion = function() {
      assert.isFalse(keyman.isAttached(ele), "Element tag '" + ele.tagName + "', id '" + ele.id + "' was not detached!");
    }
    if(done) {
      window.setTimeout(function() {
        assertion();
        done();
      }, kmwconfig.timeouts.eventDelay);
    } else {
      assertion();
    }
  }

  // Is utilized only by the attachmentAPI test case, but it was originally defined as part of the same
  // object as the rest of DynamicElements, which is useful for numerous test cases.
  DynamicElements.init = function() {
    var s_key_json = {"type": "key", "key":"s", "code":"KeyS","keyCode":83,"modifierSet":0,"location":0};
    DynamicElements.keyCommand = new KMWRecorder.PhysicalInputEvent(s_key_json);

    DynamicElements.enabledLaoOutput = "ຫ";
    DynamicElements.enabledKhmerOutput = "ស";
    // Simulated JavaScript events do not produce text output.
    DynamicElements.disabledOutput = "";
  }

  DynamicElements.init();
}