Create course download endpoint

cgen-ebe12d6531284dc08ffd8515ce9f5cd6

api/courses/download.ts

@@ -0,0 +1,68 @@
+import fs from 'fs';
+import path from 'path';
+
+export default async function handler(req: Request) {
+  const url = new URL(req.url);
+  const courseSlug = url.searchParams.get('course');
+  const format = url.searchParams.get('format') || 'markdown'; // markdown, pdf, code
+
+  if (!courseSlug) {
+    return new Response(JSON.stringify({ error: 'Missing course slug' }), {
+      status: 400,
+      headers: { 'Content-Type': 'application/json' },
+    });
+  }
+
+  try {
+    const filePath = path.join(
+      process.cwd(),
+      'public',
+      'courses',
+      `${courseSlug}.${format === 'markdown' ? 'md' : format}`
+    );
+
+    // Check if file exists
+    if (!fs.existsSync(filePath)) {
+      return new Response(
+        JSON.stringify({ error: 'Course material not found' }),
+        {
+          status: 404,
+          headers: { 'Content-Type': 'application/json' },
+        }
+      );
+    }
+
+    // Read file
+    const fileContent = fs.readFileSync(filePath, 'utf-8');
+    const fileSize = Buffer.byteLength(fileContent);
+
+    // Determine content type
+    const contentTypes: Record<string, string> = {
+      markdown: 'text/markdown; charset=utf-8',
+      pdf: 'application/pdf',
+      code: 'text/plain; charset=utf-8',
+    };
+
+    return new Response(fileContent, {
+      status: 200,
+      headers: {
+        'Content-Type': contentTypes[format] || 'application/octet-stream',
+        'Content-Length': fileSize.toString(),
+        'Content-Disposition': `attachment; filename="${courseSlug}-guide.${format === 'markdown' ? 'md' : format}"`,
+        'Cache-Control': 'public, max-age=3600',
+      },
+    });
+  } catch (error: any) {
+    console.error('Download error:', error);
+    return new Response(
+      JSON.stringify({
+        error: 'Failed to download course material',
+        message: error.message,
+      }),
+      {
+        status: 500,
+        headers: { 'Content-Type': 'application/json' },
+      }
+    );
+  }
+}