cesr/dist/genus.js

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import { decodeBase64Int, encodeBase64Int } from "./encoding-base64.js";
import { encodeBinary, encodeText, decodeText, resolveQuadletCount } from "./frame.js";
const Size = Object.freeze({
    hs: 5,
    ss: 3,
    fs: 8,
    ls: 0,
    xs: 0,
});
export class Genus {
    code;
    protocol;
    major;
    minor;
    constructor(init) {
        if (typeof init.major !== "number" || init.major < 0 || init.major > 63) {
            throw new Error(`Invalid major version: ${init.major}`);
        }
        const minor = init.minor ?? 0;
        if (typeof minor !== "number" || minor < 0) {
            throw new Error(`Invalid minor version: ${minor}`);
        }
        this.code = `-_${init.protocol}`;
        this.protocol = init.protocol;
        this.major = init.major;
        this.minor = init.minor ?? 0;
    }
    get size() {
        return Size;
    }
    get soft() {
        return decodeBase64Int(`${encodeBase64Int(this.major, 1)}${encodeBase64Int(this.minor, 2)}`);
    }
    get quadlets() {
        return resolveQuadletCount(this);
    }
    text() {
        return encodeText(this);
    }
    binary() {
        return encodeBinary(this);
    }
    static KERIACDC_10 = new Genus({
        protocol: "AAA",
        major: 1,
        minor: 0,
    });
    static KERIACDC_20 = new Genus({
        protocol: "AAA",
        major: 2,
        minor: 0,
    });
    static parse(input) {
        const frame = decodeText(input, Size);
        const genus = frame.code.slice(2);
        const soft = encodeBase64Int(frame.soft ?? 0, 3);
        const major = decodeBase64Int(soft.slice(0, 1));
        const minor = decodeBase64Int(soft.slice(1, 3));
        return new Genus({
            protocol: genus,
            major,
            minor,
        });
    }
}