Add Comprehensive Error Handling and Validation for API Services

[HRISHIKESH-hackoff]

Description

Currently, the services layer (geminiService, firebaseService, extractionService, etc.) lacks comprehensive error handling and response validation. This can lead to unhandled promise rejections, poor user experience, and difficult debugging.

Issue Details

The following improvements need to be made:

1. API Response Validation

• Add TypeScript type guards to validate API responses
• Implement error boundaries for Gemini API responses
• Validate Firebase authentication and Firestore operations
• Add proper null/undefined checks

2. Error Handling

• Wrap all service calls with try-catch blocks
• Implement custom error types for different failure scenarios
• Add error logging and reporting mechanism
• Provide meaningful error messages to the UI layer

3. Timeout Handling

• Add timeout mechanisms for long-running API calls (Gemini, PDF extraction)
• Implement retry logic with exponential backoff for failed requests

4. State Management

• Add loading, error, and success states for async operations
• Clear error states when retrying operations

Files to Modify

• /services/geminiService.ts
• /services/firebaseService.ts
• /services/extractionService.ts
• /services/urlContentService.ts
• /services/storageService.ts

Benefits

• Improved reliability and stability
• Better debugging capabilities
• Enhanced user experience with clear error messages
• Reduced unhandled promise rejections

Acceptance Criteria

• All service functions have proper error handling
• Error responses are properly typed
• Documentation is updated with error scenarios

[Antarik06]

Thanks a lot for raising this issue! it’s a very important one and absolutely crucial for the project in the long run.
The PR you’ve opened is a good starting point and sets up a solid foundation for error handling. Please continue implementing the complete solution in the same PR by integrating these utilities into the actual service files (Gemini, Firebase, extraction, etc.) and wiring proper validation and error propagation.

Please take your time and make sure the implementation is thorough and handles edge cases well.

[datta-sayak]

@Antarik06 I see this issue is open for quite for some long time and there are no updates about merging the PR

It would like to see into this issue and try to apply the the recommended fix

[srija-pixel]

Hi 👋
I would like to work on this issue.
Could you please assign it to me?

[Aditya8369]

@Antarik06 hey can you assign me as there is no update since 3 weeks