[gitlab-org/gitlab] Improve reachability status messaging in vulnerability report UI

### ROOT CAUSE The current vulnerability report UI displays a generic "Not available" message for reachability status, which lacks context. This ambiguity confuses users about the reason for the unavailability and potential actions, hindering their ability to prioritize vulnerabilities effectively. ### CODE FIX Update the reachability status display logic to include descriptive messages based on specific reasons for unavailability. Here's a structured approach: 1. **Define Status Codes**: Extend the status system to include granular reasons: ```javascript // Example: In the backend or frontend logic const reachabilityStatus = { AVAILABLE: 'available', NOT_AVAILABLE_REASON_1: 'not_available_dependency_not_found', // Dependency missing NOT_AVAILABLE_REASON_2: 'not_available_analysis_failed', // Analysis error NOT_AVAILABLE_REASON_3: 'not_available_project_not_scanned', // Project not scanned IN_PROGRESS: 'in_progress' }; ``` 2. **Map Status to Descriptive Messages**: Update the UI to translate status codes into user-friendly messages: ```javascript // Example: In the frontend component const statusMessages = { [reachabilityStatus.AVAILABLE]: 'Reachability data available', [reachabilityStatus.NOT_AVAILABLE_REASON_1]: 'Dependency not found', [reachabilityStatus.NOT_AVAILABLE_REASON_2]: 'Analysis failed', [reachabilityStatus.NOT_AVAILABLE_REASON_3]: 'Project not scanned', [reachabilityStatus.IN_PROGRESS]: 'Analysis in progress' }; // Usage in the UI const displayMessage = statusMessages[vulnerability.reachabilityStatus] || 'Unknown status'; ``` 3. **Enhance Backend Logic**: Ensure the backend provides detailed status codes based on analysis results. For example: ```python # Pseudocode: Backend analysis logic def analyze_reachability(vulnerability): if dependency_missing(vulnerability): return 'not_available_dependency_not_found' elif analysis_failed(vulnerability): return 'not_available_analysis_failed' elif project_unscanned(vulnerability): return 'not_available_project_not_scanned' elif analysis_in_progress(vulnerability): return 'in_progress' else: return 'available' ``` 4. **Update User Interface**: Replace the generic "Not available" placeholder with the descriptive messages in the UI. For example: ```html ``` 5. **Add Actionable Guidance**: Include tooltips or links for users to take action: ```html ``` This solution improves clarity by mapping specific reasons to descriptive messages and provides actionable guidance, enabling users to understand reachability issues and resolve them efficiently.