async function downloadFile()

in src/github/junie/attachment-downloader.ts [18:48]

• 23 lines of code
• 6 McCabe index (conditional complexity)

async function downloadFile(url: string): Promise<string> {
    const response = await fetch(url);
    if (!response.ok) {
        throw new Error(`Failed to download ${url}: ${response.status} ${response.statusText}`);
    }

    const arrayBuffer = await response.arrayBuffer();
    const buffer = Buffer.from(arrayBuffer);

    await mkdir(DOWNLOAD_DIR, {recursive: true});

    let filename = url.split('/').pop() || `attachment-${Date.now()}`;

    // If filename doesn't have extension, try to get it from Content-Type
    if (!filename.includes('.')) {
        const contentType = response.headers.get('content-type');
        if (contentType) {
            const ext = mime.extension(contentType);
            if (ext) {
                filename = `${filename}.${ext}`;
            }
        }
    }

    const localPath = join(DOWNLOAD_DIR, filename);

    await writeFile(localPath, buffer);
    console.log(`✓ Downloaded: ${url} -> ${localPath}`);

    return localPath;
}