(function () {

    /* in userData root object

        "feedback": {
            "eventName": "LoadTest_11_17_2018"
        },
        "signup": {
            "linkURL": "https://highfidelity.com/futvre-lands"
        },
        "apps": ["https://hifi-content.s3.amazonaws.com/Experiences/LoadTest/VoteApp/Final/V8/voteApp.js"]
    
    */
    
    var FEEDBACK_CURRENT_EVENTNAME = "io.highfidelity.feedbackApp.currentEventName";

    var SIGNUP_APP_SETTING = 'io.highfidelity.signup.app.url';

    var VOTE_APP_FILE = 'voteApp.js';

    var PREV_VERS_VOTE_APP_FILE = "https://hifi-content.s3.amazonaws.com/Experiences/LoadTest/VoteApp/Final/V7/voteApp.js";

    var appList = [];
    var userData;

    function getRunningURLList () {
        var scriptList = ScriptDiscoveryService.getRunning();

        var urlList = scriptList.map(function (scriptInfo) {
            return scriptInfo.url;
        });

        return urlList;
    }

    function runScript(url) {
        var urlList = getRunningURLList();
        Script.setTimeout(function () {
            if (urlList.indexOf(url) === -1) {
                ScriptDiscoveryService.loadScript(url);
            }
        }, 500);
    }

    var feedback = {
        /*
            feedback: {
                eventName: "LoadTest_11_17_2018"
            }
        */
        isSetup: false,
        defaultURL: "http://hifi-content.s3-us-west-1.amazonaws.com/Experiences/LoadTest/AppLoader/Apps/Feedback/feedback_loader.js",
        url: "",
        setup: function () {
            this.isSetup = true;

            Settings.setValue(FEEDBACK_CURRENT_EVENTNAME, userData.feedback.eventName);

            this.url = userData.feedback.url ? userData.feedback.url : this.defaultURL;
            runScript(this.url);
        },
        unload: function () {
            this.isSetup = false;
            ScriptDiscoveryService.stopScript(this.url);
        }
    }

    var signup = {
        /*
            signup: {
                linkURL: "eventbrite.com"
            }
        */
        isSetup: false,
        defaultURL: "http://hifi-content.s3-us-west-1.amazonaws.com/Experiences/LoadTest/AppLoader/Apps/Signup/SignupApp_loader.js",
        url: "",
        setup: function () {
            this.isSetup = true;

            if (userData.signup.linkURL) {
                Settings.setValue(SIGNUP_APP_SETTING, userData.signup.linkURL);
            }

            this.url = userData.signup.url ? userData.signup.url : this.defaultURL;
            runScript(this.url);
        },
        unload: function () {
            this.isSetup = false;
            ScriptDiscoveryService.stopScript(this.url);
        }
    }

    var AppsToLoad = function () {}

    AppsToLoad.prototype = {
        preload: function (id) {
            var properties = Entities.getEntityProperties(id, ["userData"]);

            try {
                userData = JSON.parse(properties.userData);
            } catch (e) {
                console.error("Error parsing userData: ", e);
            }

            if (userData) {
                if (userData.feedback) {
                    feedback.setup();
                }
                if (userData.signup) {
                    signup.setup();
                }
                if (userData.apps) {

                    if (Array.isArray(userData.apps)) {
                        appList = userData.apps;

                        
                        Script.setTimeout(function () {
                            var urlList = getRunningURLList();
    
                            // check for previous vote app and unload if found
                            if (urlList.indexOf(PREV_VERS_VOTE_APP_FILE) !== -1) {
                                ScriptDiscoveryService.stopScript(PREV_VERS_VOTE_APP_FILE);
                            }

                            appList.forEach(function (url) {
                                runScript(url);
                            });
                        }, 500);

                    } else {
                        console.error("AppsToLoad: userData.apps is not an array!");
                    }
                } 
            }

        },
        unload: function () {
            if (feedback.isSetup) {
                feedback.unload();
            }
            if (signup.isSetup) {
                signup.unload();
            }
            if (appList.length) {
                appList.forEach(function (url) {
                    if (url.indexOf(VOTE_APP_FILE) === -1) {
                        // do not unload voteApp.js
                        ScriptDiscoveryService.stopScript(url);
                    }
                });
            }
        }
    };

    return new AppsToLoad ();
})