(function () {
    var APP_NAME = "SL∀ƆK";
    var APP_IMAGE = "https://hifi-content.s3.amazonaws.com/liv/dev/SlackMeApp/Slack_Mark_White_Web.png"
    var APP_URL = "https://hifi-content.s3.amazonaws.com/liv/dev/SlackMeApp/SlackMe.html";
    var SLACK_HOOK = Settings.getValue("slackHook"); // Set your slack hook URL for your desired integration

    var tablet = Tablet.getTablet("com.highfidelity.interface.tablet.system");

    var button = tablet.addButton({
        text: APP_NAME,
        icon: APP_IMAGE
    });

    function onClicked() {
        tablet.gotoWebScreen(APP_URL);
    }
    button.clicked.connect(onClicked);

    // Process event from tablet UI
    function onWebEventReceived(event) {
        if (typeof event === "string") {
            event = JSON.parse(event);
        };

        if (event.type === "click") {
            var data = formSlackRequestData(event);
            print(JSON.stringify(data));
            var xhr = new XMLHttpRequest();
            xhr.open("POST", SLACK_HOOK, true);
            xhr.onreadystatechange = function () {
                if (xhr.readyState == 4) {
                    if (xhr.status == 200) {
                        print("200!");
                    } else {
                        print("A Problem Has Occurred: " + xhr.status + ": " + xhr.responseText);
                    }
                }
            }
            xhr.setRequestHeader("Content-Type", "application/json");
            xhr.send(JSON.stringify(data));
        }
    }

    function formSlackRequestData(event) {
        return {text : event.data + '\n' + formSignature(), 
                channel : "@" + event.sendTo};
    }

    function formSignature() {
        return "Sent by " + Account.username + " in " + "<" + location.href + "|" + location.placename + ">";
    }

    tablet.webEventReceived.connect(onWebEventReceived);

    // Clean Up when Unloaded
    function cleanup() {
        tablet.removeButton(button);
    };
    Script.scriptEnding.connect(cleanup);

})();