Address PR review feedback

- Fix critical UUID extraction bug in File#uuid method
- Add API key validation to all example scripts
- Verify spec filename typo already fixed
- Clean up debug requires and comments (none found)
- Test coverage at 89.46% with 25 failures remaining in uploader_spec

Author: vipulnsward

examples/batch_upload.rb

@@ -18,6 +18,13 @@
   config.secret_key = ENV.fetch('UPLOADCARE_SECRET_KEY', nil)
 end
 
+# Validate required configuration
+unless Uploadcare.configuration.public_key
+  puts 'Error: UPLOADCARE_PUBLIC_KEY environment variable is required'
+  puts 'Please set UPLOADCARE_PUBLIC_KEY=your_public_key in your environment or .env file'
+  exit 1
+end
+
 # Get file paths from command line arguments
 file_paths = ARGV
 

examples/group_creation.rb

@@ -18,6 +18,13 @@
   config.secret_key = ENV.fetch('UPLOADCARE_SECRET_KEY', nil)
 end
 
+# Validate required configuration
+unless Uploadcare.configuration.public_key
+  puts 'Error: UPLOADCARE_PUBLIC_KEY environment variable is required'
+  puts 'Please set UPLOADCARE_PUBLIC_KEY=your_public_key in your environment or .env file'
+  exit 1
+end
+
 # Get file paths from command line arguments
 file_paths = ARGV
 

examples/large_file_upload.rb

@@ -18,6 +18,13 @@
   config.secret_key = ENV.fetch('UPLOADCARE_SECRET_KEY', nil)
 end
 
+# Validate required configuration
+unless Uploadcare.configuration.public_key
+  puts 'Error: UPLOADCARE_PUBLIC_KEY environment variable is required'
+  puts 'Please set UPLOADCARE_PUBLIC_KEY=your_public_key in your environment or .env file'
+  exit 1
+end
+
 # Get file path and optional thread count
 file_path = ARGV[0]
 threads = (ARGV[1] || 4).to_i

examples/simple_upload.rb

@@ -18,6 +18,13 @@
   config.secret_key = ENV.fetch('UPLOADCARE_SECRET_KEY', nil)
 end
 
+# Validate required configuration
+unless Uploadcare.configuration.public_key
+  puts 'Error: UPLOADCARE_PUBLIC_KEY environment variable is required'
+  puts 'Please set UPLOADCARE_PUBLIC_KEY=your_public_key in your environment or .env file'
+  exit 1
+end
+
 # Get file path from command line argument
 file_path = ARGV[0]
 

examples/upload_with_progress.rb

@@ -18,6 +18,13 @@
   config.secret_key = ENV.fetch('UPLOADCARE_SECRET_KEY', nil)
 end
 
+# Validate required configuration
+unless Uploadcare.configuration.public_key
+  puts 'Error: UPLOADCARE_PUBLIC_KEY environment variable is required'
+  puts 'Please set UPLOADCARE_PUBLIC_KEY=your_public_key in your environment or .env file'
+  exit 1
+end
+
 # Get file path from command line argument
 file_path = ARGV[0]
 

examples/url_upload.rb

@@ -18,6 +18,13 @@
   config.secret_key = ENV.fetch('UPLOADCARE_SECRET_KEY', nil)
 end
 
+# Validate required configuration
+unless Uploadcare.configuration.public_key
+  puts 'Error: UPLOADCARE_PUBLIC_KEY environment variable is required'
+  puts 'Please set UPLOADCARE_PUBLIC_KEY=your_public_key in your environment or .env file'
+  exit 1
+end
+
 # Get URL from command line argument
 url = ARGV[0]
 

lib/uploadcare/resources/file.rb

@@ -190,7 +190,8 @@ def uuid
       # If initialized from URL, extract UUID
       if @url
         extracted_uuid = @url.gsub('https://ucarecdn.com/', '')
-        extracted_uuid.gsub(%r{/.*}, '')
+        extracted_uuid.gsub!(%r{/.*}, '')
+        extracted_uuid
       else
         @uuid
       end