helper.ts

const CryptoJS = require("crypto-js");

export function makeid(length:number) {
    let result           = '';
    let characters       = 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789';
    let charactersLength = characters.length;
    for ( let i = 0; i < length; i++ ) {
        result += characters.charAt(getRandomInt(charactersLength));
    }
    return result;
}

export function IsJsonString(str:string) {
    try {
        JSON.parse(str);
    } catch (e) {
        return false;
    }
    return true;
}

export function convert3dToString(array:number[][]){
    let tempArr:string[] = [];
    for(let i:number = 0; i < array.length; i++){
        tempArr.push(array[i].join(";"));
    }
    return tempArr.join("#");
}
export function convertStringTo3D(text:string){
    let tempArr:number[][] = [];
    let snakeElements:string[] = text.split("#");
    snakeElements.forEach((element:string) => {
        let temp:number[] = [];
        let elementArray:string[] = element.split(";");
        elementArray.forEach((element:string) => {
            temp.push(parseInt(element));
        });
        tempArr.push(temp);
    });
    return tempArr
}

export function getRandomInt(max:number) {
    return Math.floor(Math.random() * Math.floor(max)) + 1;
}

export function encodeMessage(message:string, encryptionKey: string){
    return CryptoJS.AES.encrypt(message, encryptionKey).toString();
}
export function decodeMessage(message:string, encryptionKey: string){
    try {
        console.log('Encryption key: ' + encryptionKey);
        return  CryptoJS.AES.decrypt(message, encryptionKey).toString(CryptoJS.enc.Utf8);
    } catch (Exception){
        console.log("failed to decode message");
        console.log(Exception);
        return ""
    }
}