Add detailed logging for LaTeX to PDF conversion

app/api/data/route.ts

@@ -122,44 +122,61 @@ export async function POST(request: NextRequest) {
 
                 // Auto-convert .tex files to PDF
                 if (fileName.endsWith('.tex')) {
-                    console.log('Detected .tex file, auto-converting to PDF...')
+                    console.log('✨ Detected .tex file, auto-converting to PDF...')
                     try {
+                        console.log('📡 Sending LaTeX content to LaTeX.Online API...')
+                        console.log(`   Content length: ${content.length} characters`)
+                        
                         // Compile LaTeX to PDF using LaTeX.Online
                         const compileResponse = await fetch('https://latexonline.cc/compile', {
                             method: 'POST',
                             headers: {
                                 'Content-Type': 'text/plain',
                             },
-                            body: content
+                            body: content,
+                            signal: AbortSignal.timeout(30000) // 30 second timeout
                         })
 
+                        console.log(`📥 Response status: ${compileResponse.status} ${compileResponse.statusText}`)
+
                         if (compileResponse.ok) {
                             const pdfBuffer = await compileResponse.arrayBuffer()
                             const pdfFileName = fileName.replace('.tex', '.pdf')
                             const pdfFilePath = path.join(targetDir, pdfFileName)
                             
+                            console.log(`💾 PDF size: ${pdfBuffer.byteLength} bytes`)
+                            console.log(`📁 Saving PDF to: ${pdfFilePath}`)
+                            
                             await writeFile(pdfFilePath, Buffer.from(pdfBuffer))
-                            console.log(`PDF generated successfully: ${pdfFilePath}`)
+                            console.log(`✅ PDF generated successfully: ${pdfFileName}`)
                             
                             return NextResponse.json({ 
                                 success: true, 
                                 pdfGenerated: true,
-                                pdfFileName: pdfFileName
+                                pdfFileName: pdfFileName,
+                                message: `LaTeX file saved and converted to ${pdfFileName}`
                             })
                         } else {
-                            console.error('PDF compilation failed:', await compileResponse.text())
+                            const errorText = await compileResponse.text()
+                            console.error('❌ PDF compilation failed:')
+                            console.error('   Status:', compileResponse.status)
+                            console.error('   Error:', errorText)
                             return NextResponse.json({ 
                                 success: true, 
                                 pdfGenerated: false,
-                                error: 'LaTeX file saved but PDF generation failed'
+                                error: `LaTeX file saved but PDF generation failed: ${compileResponse.status}`,
+                                details: errorText.substring(0, 500)
                             })
                         }
                     } catch (pdfError) {
-                        console.error('Error generating PDF:', pdfError)
+                        console.error('❌ Error generating PDF:', pdfError)
+                        console.error('   Error type:', pdfError instanceof Error ? pdfError.name : typeof pdfError)
+                        console.error('   Error message:', pdfError instanceof Error ? pdfError.message : String(pdfError))
                         return NextResponse.json({ 
                             success: true, 
                             pdfGenerated: false,
-                            error: 'LaTeX file saved but PDF generation failed'
+                            error: 'LaTeX file saved but PDF generation failed',
+                            details: pdfError instanceof Error ? pdfError.message : String(pdfError)
                         })
                     }
                 }