Method uploadPDFs

src/lib/api.ts:343–393

(sessionId: string, files: File[])

  // Legacy upload function - can be removed if no longer needed
  async uploadPDFs(sessionId: string, files: File[]): Promise<{ 
    message: string; 
    uploaded_files: any[]; 
    processing_results: any[];
    session_documents: any[];
    total_session_documents: number;
  }> {
    try {
      // Test if files have content and show size info
      let totalSize = 0;
      for (const file of files) {
        if (file.size === 0) {
          throw new Error(`File ${file.name} is empty (0 bytes)`);
        }
        totalSize += file.size;
        const sizeMB = (file.size / (1024 * 1024)).toFixed(2);
        console.log(`📄 File ${file.name}: ${sizeMB}MB (${file.size} bytes), type: ${file.type}`);
      }
      
      const totalSizeMB = (totalSize / (1024 * 1024)).toFixed(2);
      console.log(`📄 Total upload size: ${totalSizeMB}MB`);
      
      if (totalSize > 50 * 1024 * 1024) { // 50MB limit
        throw new Error(`Total file size ${totalSizeMB}MB exceeds 50MB limit`);
      }
      
      const formData = new FormData();
      
      // Use a generic field name 'file' that the backend expects
      let i = 0;
      for (const file of files) {
        formData.append(`file_${i}`, file, file.name);
        i++;
      }
      
      const response = await fetch(`${API_BASE_URL}/sessions/${sessionId}/upload`, {
        method: 'POST',
        body: formData,
      });

      if (!response.ok) {
        const errorData = await response.json().catch(() => ({ error: 'Unknown error' }));
        throw new Error(`Upload error: ${errorData.error || response.statusText}`);
      }

      return await response.json();
    } catch (error) {
      console.error('PDF upload failed:', error);
      throw error;
    }
  }

  // Convert database message format to ChatMessage format
  convertDbMessage(dbMessage: Record<string, unknown>): ChatMessage {