#!/usr/bin/env -S deno run --allow-env

// Reference:
// - https://docs.deno.com/examples/command_line_arguments/
// - https://docs.deno.com/api/node/crypto/~/X509Certificate#property_issuercertificate
// - https://docs.deno.com/api/node/crypto/~/createPublicKey

const {X509Certificate, createPublicKey} = await import('node:crypto');

if (Deno.args.length === 0) {
    console.log("Usage: publickey.ts <certificate|publickey|jwk>");
    Deno.exit(1);
}

// function tryParseCertificate() {
//     const x509 = new X509Certificate(Deno.args[0]);
//
//     const exportedJwk = x509.publicKey.export({format: "jwk"});
//     console.log(JSON.stringify(exportedJwk, null, 4));
//
//     console.log(x509.publicKey.export({format: "pem", type: "spki"}));
// }

function printPublicKey(publicKey) {
    console.log('JWK:');
    const exportedJwk = publicKey.export({format: "jwk"});
    console.log(JSON.stringify(exportedJwk, null, 4));
    console.log();
    console.log("PEM:");
    console.log(publicKey.export({format: "pem", type: "spki"}));
}

const firstArgument = Deno.args[0];
try {
    const publicKey = createPublicKey(firstArgument);
    printPublicKey(publicKey);
    Deno.exit(0);
} catch (e) {
    // try jwk
    try {
        const key = JSON.parse(firstArgument);
        const publicKey = createPublicKey({key, format: "jwk"});
        printPublicKey(publicKey);
        Deno.exit(0);
    } catch (e) {
        // IGNORE
    }

    console.error(`Parse certificate or public key failed: ${e}`);
    Deno.exit(1);
}