// checkinClient.js
//
// Created by Robin Wilson on 2018-08-24
//
// Copyright 2018 High Fidelity, Inc.
//
// Entity server script used in tandem with checkinClient.js to search for username in a 
// google sheet column and mark the user present.
//
// Distributed under the Apache License, Version 2.0.
// See the accompanying file LICENSE or http://www.apache.org/licenses/LICENSE-2.0.html

(function () {

    var entityID,
        url = "",
        event = null,
        on = false;

    // mirrored in the google app script code
    var SUCCESS = "Success";
    var NOT_FOUND_USERNAME = "Not found username";
    var FAILURE = "There was a problem please let Hifi know";

    // Collections
    var currentProperties = {},
        userData = {},
        userdataProperties = {};

    function CheckinServer() {
    }

    CheckinServer.prototype = {
        remotelyCallable: [
            "greeterSearch",
            "hasUsername"
        ],

        preload: function (id) {
            entityID = id;
            currentProperties = Entities.getEntityProperties(entityID);

            userData = currentProperties.userData;
            try {
                // set properties from the userData
                userdataProperties = JSON.parse(userData);
                url = userdataProperties.checkinData.url;
                event = userdataProperties.checkinData.event;
                on = userdataProperties.checkinData.on;
            } catch (e) {
                //
            }

        },

        hasUsername: function (id, params) {

            if (on) {

                var paramString = this.encodeURLParams({
                    username: params[1],
                    displayName: params[2],
                    date: new Date(),
                    event: event
                });

                var request = new XMLHttpRequest();
                request.open('GET', url + "?" + paramString);
                request.timeout = 10000;
                request.ontimeout = function () {
                    Entities.callEntityClientMethod(params[0], entityID, "invalid");
                };
                request.onreadystatechange = function () { // called after load when readyState = 4

                    print("STATE CHANGED");
                    if (request.readyState === 4) {

                        if (request.response === SUCCESS) {
                            Entities.callEntityClientMethod(params[0], entityID, "success");
                        } else if (request.response === NOT_FOUND_USERNAME || request.response === FAILURE) {
                            Entities.callEntityClientMethod(params[0], entityID, "invalid");
                        } else {
                            Entities.callEntityClientMethod(params[0], entityID, "invalid");
                        }
                    }

                };
                request.send();
            }
        },

        encodeURLParams: function (params) {
            var paramPairs = [];
            for (var key in params) {
                paramPairs.push(key + "=" + params[key]);
            }
            return paramPairs.join("&");
        },

        unload: function () {

        }
    };

    return new CheckinServer();
});