HelpingHelenaApp/www/js/main.js

/* This Source Code Form is subject to the terms of the Mozilla Public
 * License, v. 2.0. If a copy of the MPL was not distributed with this
 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */

var $$ = Dom7;

// Detect platform and run platform-specific setup code
// for Cordova, NW.js, or the browser
initPlatform();

Template7.global = {
    qrenabled: (platform_type == "cordova")
};

var app = new Framework7({
    root: "#app",
    name: "HelpingHelena",
    id: "com.netsyms.HelpingHelena",
    theme: platform_theme,
    debug: true,
    init: true,
    initOnDeviceReady: false,
    routes: routes
});

var mainView = app.views.create('.view-main', {
    url: "/"
});

var router = mainView.router;

function restartApplication() {
    window.location = "index.html";
}

router.on("pageInit", function (pagedata) {
    pagedata.$el.find('script').each(function (el) {
        if ($$(this).attr('src')) {
            var s = document.createElement('script');
            s.src = $$(this).attr('src');
            $$('head').append(s);
        } else {
            eval($$(this).text());
        }
    });
    switch (pagedata.name) {
        case "settings":
            updateSettingsData();
            break;
    }
});

/**
 * Check if there is a valid API key stored locally.
 * @param {function} callback A function that will be called with a boolean argument indicating if the key is valid.
 * @return {undefined}
 */
function checkKey(callback) {
    if (localStorage.getItem("key") === null) {
        callback(false);
        return;
    }

    callAPI("checkkey", {
        key: localStorage.getItem("key")
    }, function (data) {
        var currentTimestamp = Math.floor(Date.now() / 1000);
        // Check if the key is valid and has at least one day before expiry
        // If someone leaves the app open longer than 24 hours and the key is
        // not renewed, there might be bugs.
        if (data.valid == true && data.expires > (currentTimestamp + (60 * 60 * 24))) {
            callback(true);
            return;
        }
        callback(false);
    }, function (msg) {
        callback(false);
    });
}

/**
 * Attempt to get a new API key using stored credentials.
 * @param {function} callback A function that will be called with a boolean argument indicating if the attempt was successful.
 * @return {undefined}
 */
function refreshKey(callback) {
    if (localStorage.getItem("username") === null || localStorage.getItem("password") === null) {
        callback(false);
        return;
    }

    callAPI("getkey", {
        username: localStorage.getItem("username"),
        password: localStorage.getItem("password"),
    }, function (data) {
        localStorage.setItem("key", data.key);
        callback(true);
    }, function (msg) {
        callback(false);
    });
}

function setupKeyRefresh() {
    // Check and refresh API key as needed
    // Should mitigate key expiration if the app is left open for
    // a long time when the key is almost expired
    setInterval(function () {
        checkKey(function (valid) {
            if (!valid) {
                refreshKey(function (ok) {
                    if (!ok) {
                        router.navigate("/setup/0");
                    }
                });
            }
        });
    }, 1000 * 60 * 5);
}

if (localStorage.getItem("configured") == null) {
    // Open the setup page
    router.navigate("/setup/0");
} else {
    checkKey(function (valid) {
        if (valid) {
            try {
                var url = new URL(window.location.href);
                if (typeof url.searchParams.get("sendto") == "string") {
                    router.navigate("/sendmoney/" + url.searchParams.get("sendto"));
                } else {
                    router.navigate("/home");
                }
            } catch (ex) {
                router.navigate("/home");
            }

            setupKeyRefresh();
        } else {
            refreshKey(function (ok) {
                if (ok) {
                    try {
                        var url = new URL(window.location.href);
                        if (typeof url.searchParams.get("sendto") == "string") {
                            router.navigate("/sendmoney/" + url.searchParams.get("sendto"));
                        } else {
                            router.navigate("/home");
                        }
                    } catch (ex) {
                        router.navigate("/home");
                    }
                    
                    setupKeyRefresh();
                } else {
                    //router.navigate("/setup/0");
                }
            });
        }
    });

}