const crc = require("./crc.js");
const message = process.argv[3];
const flag = process.argv[2];

switch (flag) {
    case '-e':
        console.log(crc.encode(message).encoded);
        break;
    case '-d':
        let fcs = JSON.parse(process.argv[4].replace(/'/g, '"'));
        console.log(crc.decode(message, fcs));
        break;
    case '-t':
        let res = crc.encode(message);
        console.log(res.encoded);
        console.log(crc.decode(message, res.FCS))
        break;
    default:
        throw "incorect flag"
}