#! /usr/bin/env runjs

var hashjs = require('component-hashjs.js');

var main = () => {
    var args = $ARRAY($ARGS);
    if (args.length < 1) {
        println('No args...');
        println();
        println('digestjs.js <FILE>')
        return;
    }
    args.forEach((f) => {
        var fi = $$.file(f);
        if (fi.isDirectory()) { xprintln('[WARN] Skip directory: ' + fi); return; }
        if (!(fi.getName().endsWith('.js'))) { xprintln('[WARN] Skip non js: ' + fi); return; }

        var bytes = $$.rFile(fi).Bytes();
        var list = bytes.list();
        var digestJSON = hashjs.__getDigestJSON(list);

        var jsSHA256Hex = hashjs.__calcSHA256Hex(list);
        if (digestJSON == null) {
            xprintln('[OK] Write file: ' + fi + ', SHA256: ' + jsSHA256Hex);
            digestJSON = { 'SHA256': jsSHA256Hex };
            list.add(hashjs.COMMENT_HASH_TAG + JSON.stringify(digestJSON));
            $$.rFile(fi).write($ARR(list).join('\n'));
        } else {
            if (digestJSON.SHA256 == jsSHA256Hex) {
                xprintln('[INFO] SHA256 matches, Skip file SHA256 update: ' + fi);
            } else {
                xprintln('[OK] Update file: ' + fi + ', SHA256: ' + digestJSON.SHA256 + ' >> ' + jsSHA256Hex);
                digestJSON = { 'SHA256': jsSHA256Hex };
                list.add(hashjs.COMMENT_HASH_TAG + JSON.stringify(digestJSON));
                $$.rFile(fi).write($ARR(list).join('\n'));
            }
        }
    });
};

main();