package com.ankurm.streams;

/** A card transaction. */
public record Txn(String card, double amount, int hour, String category) {

    /** Wire format: {@code card,amount,hour,category}. Plain text keeps the serde trivial to read. */
    public String encode() {
        return card + "," + amount + "," + hour + "," + category;
    }

    public static Txn decode(String s) {
        String[] p = s.split(",", 4);
        return new Txn(p[0], Double.parseDouble(p[1]), Integer.parseInt(p[2]), p[3]);
    }
}