storage.js

var debug = false;

function log(message) {
    if (debug)
        channel.message(message);
}
function log(message, obj) {
    log(message + ": " + JSON.stringify(obj));
}

function getData(arg) {
    var ret = parseName(arg);
    log("Initial split", ret);
    arg = ret[1];
    var obj = storage.get(ret[0]);
    log("obj before parsing", obj);
    if (!arg) {
        channel.message(obj);
        return;
    }
    try {
        obj = JSON.parse(obj);
    } catch (e) {
        channel.message("Data was not in json format");
        return;
    }
    log("obj after parsing", obj);
    while (arg) {
        log("===========");
        log("arg", arg);
        ret = parseName(arg);
        log("split", ret);
        arg = ret[1];
        var name = ret[0];
        if (obj === null) {
            channel.message("Data not found, noob");
            return;
        }
        if (name in obj)
            obj = obj[name];
        else
            obj = null;
        log("obj", obj);
    }
    channel.message(JSON.stringify(obj));
}

function setData(arg) {
    var ret = parseName(arg);
    log("Initial split", ret);
    arg = ret[1];
    if (!arg || arg.startsWith("=")) {
        if (arg.startsWith("=")) {
            arg = arg.substring(1);
            arg = skipWhitespace(arg);
        }
        log("No path, setting \"" + ret[0] + "\" to \"" + arg + "\"");
        storage.set(ret[0], arg);
        channel.message("Data successfully stored");
        return;
    }
    var lastObj;
    var name = null;
    var obj = storage.get(ret[0]);
    log("obj before parsing", obj);
    try {
        obj = JSON.parse(obj);
    } catch (e) {
        channel.message("Data was not in json format");
        return;
    }
    log("obj after parsing", obj);
    var topLevelObj = obj;
    log("topLevelObj", topLevelObj);
    while (arg && !arg.startsWith("=")) {
        log("===========");
        log("arg", arg);
        lastObj = obj;
        ret = parseName(arg);
        log("split", ret);
        arg = ret[1];
        name = ret[0];
        if (obj === null)
            obj = {};
        if (name in obj)
            obj = obj[name];
        else
            obj = null;
        log("obj", obj);
    }
    if (arg.startsWith("="))
        arg = arg.substring(1);
    arg = skipWhitespace(arg);
    log("value before parsing", arg);
    log("lastObj before set", lastObj);
    log("topLevelObj before set", topLevelObj);
    try {
        lastObj[name] = JSON.parse(arg);
    } catch (e) {
        channel.message("json parse error:\n" + e.message);
        return;
    }
    log("value after parsing", lastObj[name]);
    log("lastObj after set", lastObj);
    log("topLevelObj after set", topLevelObj);
    storage.set(ret[0], JSON.stringify(topLevelObj));
    channel.message("Data stored");
}

function deleteData(arg) {
    var ret = parseName(arg);
    log("Initial split", ret);
    arg = ret[1];
    if (!arg) {
        log("No path");
        storage.delete(ret[0]);
    } else {
        var obj = storage.get(ret[0]);
        log("obj before parsing", obj);
        try {
            obj = JSON.parse(obj);
        } catch (e) {
            channel.message("Data was not in json format");
            return;
        }
        log("obj after parsing", obj);
        var topLevelObj = obj;
        var name = null;
        var lastObj;
        while (arg) {
            log("=============");
            log("arg", arg);
            lastObj = obj;
            ret = parseName(arg);
            log("split", ret);
            arg = ret[1];
            name = ret[0];
            if (obj == null) {
                channel.message("Data not found, noob");
                return;
            }
            if (name in obj)
                obj = obj[name];
            else
                obj = null;
            log("obj", obj);
        }
        if (obj === null) {
            channel.message("Data not found, noob");
            return;
        }
        log("lastObj before delete", lastObj);
        log("topLevelObj before delete", topLevelObj);
        delete lastObj[name];
        log("lastObj after delete", lastObj);
        log("topLevelObj after delete", topLevelObj);
        storage.set(ret[0], JSON.stringify(topLevelObj));
    }
    channel.message("Data deleted");
}

function parseName(arg) {
    arg = skipWhitespace(arg);
    var name = "";
    if (arg.startsWith("\"")) {
        var escaped = false;
        arg = arg.substring(1);
        while (arg) {
            var c = arg.charAt(0);
            arg = arg.substring(1);
            if (c == "\\") {
                if (!escaped) {
                    escaped = true;
                } else {
                    escaped = false;
                    name += "\\";
                }
            } else {
                if (c == "\"" && !escaped)
                    break;
                name += c;
                escaped = false;
            }
        }
        arg = skipWhitespace(arg);
        if (arg.startsWith("."))
            arg = arg.substring(1);
        arg = skipWhitespace(arg);
        return [name, arg];
    } else {
        while (arg && !arg.startsWith("=") && !arg.startsWith(".") && !(/^\s.+$/.test(arg))) {
            name += arg.charAt(0);
            arg = arg.substring(1);
        }
        arg = skipWhitespace(arg);
        if (arg.startsWith("."))
            arg = arg.substring(1);
        arg = skipWhitespace(arg);
        return [name, arg];
    }
}
function skipWhitespace(arg) {
    while (/^\s.+$/.test(arg))
        arg = arg.substring(1);
    return arg;
}


var arg = message.getContent();
if (arg.startsWith("//storage "))
    arg = arg.substring(10);
if (arg.startsWith("--debug ")) {
    arg = arg.substring(8);
    debug = true;
}
if (arg.startsWith("get ")) {
    getData(arg.substring(4));
} else if (arg.startsWith("set ")) {
    setData(arg.substring(4));
} else if (arg.startsWith("delete ")) {
    deleteData(arg.substring(7));
} else {
    channel.message("```\nUsage:\n//storage get path.to.data\n//storage set path.to.data=newValue\n//storage delete path.to.data\n```");
}