// these vars will be set by the calling page
var hasConfig = false;
var wUrl = null;
var appRegId = null;
var pnCode = null;
var insertWidgetScriptUrl = null;
var channel = null;
var baseTrackerUrl = null;
var runtimeCdnUrl = null;

// these vars are local
var head = document.getElementsByTagName('head').item(0);
var appId = null;
var owner = null;
var viewer = null;
var firstView = false;

var resizeOpenSocialGadget = function(height){
     if(gadgets.window){
        gadgets.window.adjustHeight(height);
    }
};

function init() {
	var dataRequest = opensocial.newDataRequest();
	dataRequest.add(dataRequest.newFetchPersonRequest(opensocial.DataRequest.PersonId.OWNER), 'owner');
	dataRequest.add(dataRequest.newFetchPersonRequest(opensocial.DataRequest.PersonId.VIEWER), 'viewer');
	dataRequest.add(dataRequest.newFetchPersonAppDataRequest(opensocial.DataRequest.PersonId.OWNER, 'appId'), 'appId');
	dataRequest.send(loadData);
}

function loadData(response) {
	var ownerData = response.get('owner');

	if (response.hadError() || ownerData.hadError()) {
		return;
	}

	owner = ownerData.getData();

	var viewerData = response.get('viewer');

	if (viewerData.hadError()) {
		return;
	}

	viewer = viewerData.getData();

	var appData = response.get('appId');

	if (response.hadError() || appData.hadError()) {
		return;
	}

	var allAppData = appData.getData();

	if (allAppData[owner.getId()]) {
		appId = allAppData[owner.getId()]['appId'];
	}

	if ((!appId || appId == 'false') && (viewer.getId() == owner.getId())) {
		doInstall();
	} else {
		loadMain();
	}
}

function doInstall() {
	var installScript = document.createElement('script');
    installScript.setAttribute('src', wUrl + '/OpenSocialInstall.js?regId=' + appRegId + '&pn=' + pnCode + '&ownerId=' + escape(owner.getId()) + '&callback=handleInstall');
	head.appendChild(installScript);
}

function handleInstall(response) {
	if (response.appId) {
		appId = response.appId;
		var req = opensocial.newDataRequest();
		req.add(req.newUpdatePersonAppDataRequest(opensocial.DataRequest.PersonId.VIEWER, 'appId', appId));
		req.send();
		firstView = true;
	}

	if (appId == null) {
		return;
	}

	loadMain();
}

function loadMain() {
	var insertWidgetScript = document.createElement('script');
	insertWidgetScript.setAttribute('src', insertWidgetScriptUrl);
	insertWidgetScript.setAttribute('id', 'widgetbox_insertwidget_script');
	insertWidgetScript.type = 'text/javascript';
	head.appendChild(insertWidgetScript);

	if (!window.WIDGETBOX) {
		if (!window.WIDGETBOXINITLISTENERS) window.WIDGETBOXINITLISTENERS = new Array();
		window.WIDGETBOXINITLISTENERS.push(loadHandler);
	} else {
		loadHandler();
	}
}

function loadHandler() {
    WIDGETBOX.load('opensocial.snapp', libReadyCallback);
}

function libReadyCallback() {
	WIDGETBOX.subscriber.WbxSnapp.appInstId = appId;
	WIDGETBOX.subscriber.WbxSnapp.ownerId = owner.getId();
    WIDGETBOX.subscriber.WbxSnapp.isOwner = (viewer.getId() == owner.getId());
    WIDGETBOX.subscriber.WbxSnapp.hasConfig = hasConfig;
    WIDGETBOX.subscriber.WbxSnapp.openSocialView = "profile";
    WIDGETBOX.subscriber.WbxSnapp.resizeOpenSocialGadget = resizeOpenSocialGadget;

    if (firstView) {
        WIDGETBOX.subscriber.WbxSnapp.addCookieSwf(runtimeCdnUrl, appId);
	}

    WIDGETBOX.subscriber.WbxSnapp.showWidget();
}

function setSkin() {
    if(gadgets.skins){
        document.write('<style type="text/css">');
        document.write('select { font-size: 11px;}');
        document.write('.main {');
        bgColor = gadgets.skins.getProperty(gadgets.skins.Property.BG_COLOR);
        if(bgColor) {
          document.write('background-color:'+bgColor+';');
        }
        bgImage = gadgets.skins.getProperty(gadgets.skins.Property.BG_IMAGE);
        if(bgImage) {
          document.write('background-image: url('+bgImage+');');
        }
        bgPosition = gadgets.skins.getProperty(gadgets.skins.Property.BG_POSITION);
        if(bgPosition) {
          document.write('background-position:'+bgPosition+';');
        }
        bgRepeat = gadgets.skins.getProperty(gadgets.skins.Property.BG_REPEAT);
        if(bgRepeat) {
          document.write('background-repeat:'+bgRepeat+';');
        }
        fontColor = gadgets.skins.getProperty(gadgets.skins.Property.FONT_COLOR);
        if(fontColor) {
          document.write('color:'+fontColor+';');
        }
        document.write('}');
        anchorColor = gadgets.skins.getProperty(gadgets.skins.Property.ANCHOR_COLOR);
        if(anchorColor) {
          document.write('.main a, .main a:hover, .main a:visited { color:'+anchorColor+';}');
        }
       document.write('</style>');
    }
}

function navigateToCanvasView(editMode){
    var mode = editMode ? "edit" : "full";
    if(gadgets.views){
        var canvas_view = new gadgets.views.View("canvas");

        gadgets.views.requestNavigateTo(canvas_view, {
            mode : mode
        });
    }
}

function navigateToFullPage(){
    navigateToCanvasView(false);
}

function navigateToEditPage(){
    navigateToCanvasView(true);
}