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'use strict';

const fs = require('node:fs');

const path = require('node:path');

const yaml = require('js-yaml');

function zipOnlyManifest(manifest) {

const files = (manifest.files || []).filter((file) => /\.zip$/i.test(file.url));

if (!files.length) throw new Error('macOS updates require a ZIP package.');

const primary = files.find((file) => file.url === manifest.path) || files[0];

return { ...manifest, files, path: primary.url, sha512: primary.sha512 };

}

function prepare(directory) {

const file = path.join(directory, 'latest-mac.yml');

const manifest = yaml.load(fs.readFileSync(file, 'utf8'));

const normalized = zipOnlyManifest(manifest);

fs.writeFileSync(file, yaml.dump(normalized, { lineWidth: -1 }));

// Stapling changes the DMG bytes after electron-builder made its metadata.

// MacUpdater uses ZIPs exclusively. DMGs remain manual downloads, covered

// by the final release checksum and SBOM; stale DMG blockmaps must not ship.

for (const entry of manifest.files || []) {

if (!/\.dmg$/i.test(entry.url) || path.basename(entry.url) !== entry.url) continue;

try { fs.unlinkSync(path.join(directory, entry.url + '.blockmap')); }

catch (error) { if (error.code !== 'ENOENT') throw error; }

}

return normalized;

}

if (require.main === module) {

prepare(path.resolve(process.argv[2] || path.join(__dirname, '..', 'dist')));

console.log('macOS updater metadata contains only its unchanged ZIP packages.');

}

module.exports = { zipOnlyManifest, prepare };