Cropping mostly done

src/lib/google.ts

@@ -126,3 +126,80 @@ export async function getSheetData(spreadsheetId: string, range: string) {
     });
     return response.result.values || [];
 }
+
+// Extract Google Drive file ID from various URL formats
+export function extractDriveFileId(url: string): string | null {
+  if (!url) return null;
+  
+  // Handle different Google Drive URL formats
+  const patterns = [
+    /\/file\/d\/([a-zA-Z0-9-_]+)/,           // https://drive.google.com/file/d/FILE_ID/view
+    /id=([a-zA-Z0-9-_]+)/,                   // https://drive.google.com/open?id=FILE_ID
+    /\/d\/([a-zA-Z0-9-_]+)/,                 // https://drive.google.com/uc?id=FILE_ID&export=download
+    /^([a-zA-Z0-9-_]{25,})$/                 // Direct file ID
+  ];
+  
+  for (const pattern of patterns) {
+    const match = url.match(pattern);
+    if (match) {
+      return match[1];
+    }
+  }
+  
+  return null;
+}
+
+// Check if URL is a Google Drive URL
+export function isGoogleDriveUrl(url: string): boolean {
+  return url.includes('drive.google.com') || url.includes('googleapis.com');
+}
+
+// Download image from Google Drive using the API
+export async function downloadDriveImage(url: string): Promise<Blob> {
+  const fileId = extractDriveFileId(url);
+  
+  if (!fileId) {
+    throw new Error('Could not extract file ID from Google Drive URL');
+  }
+  
+  if (!gapi.client.drive) {
+    throw new Error('Google Drive API not loaded');
+  }
+  
+  try {
+    // Get file metadata first to check if it exists and is accessible
+    const metadata = await gapi.client.drive.files.get({
+      fileId: fileId,
+      fields: 'id,name,mimeType,size'
+    });
+    
+    if (!metadata.result.mimeType?.startsWith('image/')) {
+      throw new Error('File is not an image');
+    }
+    
+    // Download the file content
+    const response = await gapi.client.drive.files.get({
+      fileId: fileId,
+      alt: 'media'
+    });
+    
+    // The response body is already binary data, convert to blob
+    const binaryString = response.body;
+    const bytes = new Uint8Array(binaryString.length);
+    for (let i = 0; i < binaryString.length; i++) {
+      bytes[i] = binaryString.charCodeAt(i);
+    }
+    
+    return new Blob([bytes], { type: metadata.result.mimeType });
+    
+  } catch (error) {
+    console.error('Error downloading from Google Drive:', error);
+    const errorMessage = error instanceof Error ? error.message : 'Unknown error';
+    throw new Error(`Failed to download image from Google Drive: ${errorMessage}`);
+  }
+}
+
+// Create an object URL from image data for display
+export function createImageObjectUrl(blob: Blob): string {
+  return URL.createObjectURL(blob);
+}