frontend/src/components/SnapshotCard.tsx (1)

15-17: Consider adding conditional rendering for the summary.

The summary display looks good, but there's no handling for cases where summary might be undefined or empty. Consider adding conditional rendering to gracefully handle these cases.

-        <div className="mb-2 w-full text-xs text-gray-500 dark:text-gray-300 text-center">
-          {summary}
-        </div>
+        {summary && (
+          <div className="mb-2 w-full text-xs text-gray-500 dark:text-gray-300 text-center">
+            {summary}
+          </div>
+        )}

backend/apps/owasp/models/snapshot.py (2)

55-84: Well-structured summary generation with room for optimization.

The generate_summary method is well-structured and provides a clear, informative summary of snapshot data. However, consider these improvements:

1. Add error handling for unexpected scenarios
2. Consider performance optimization as each entity type requires a separate database query

Here's an improved version with error handling:

def generate_summary(self, max_examples=2):
    """Generate a snapshot summary with counts and examples.
    
    Args:
        max_examples: Maximum number of examples to show for each entity type.
        
    Returns:
        str: A formatted summary string with counts and examples of new entities.
        
    Note:
        This method performs multiple database queries which may impact performance
        with large datasets.
    """
    summary_parts = []

    def summarize(queryset, label, example_attr):
        try:
            count = queryset.count()
            if count == 0:
                return None
            examples = list(queryset.values_list(example_attr, flat=True)[:max_examples])
            example_str = ", ".join(str(e) for e in examples)
            return f"{count} {label}{'s' if count != 1 else ''} (e.g., {example_str})"
        except Exception as e:
            # Log the error or handle it appropriately
            return f"Error processing {label}s: {str(e)}"

    entities = [
        (self.new_users, "user", "login"),
        (self.new_projects, "project", "name"),
        (self.new_chapters, "chapter", "name"),
        (self.new_issues, "issue", "title"),
        (self.new_releases, "release", "tag_name"),
    ]

    for queryset, label, attr in entities:
        part = summarize(queryset, label, attr)
        if part:
            summary_parts.append(part)

    return (
        "Snapshot Summary: " + "; ".join(summary_parts)
        if summary_parts
        else "No new entities were added."
    )

---

59-65: Consider optimizing the summarize function for better performance.

The current implementation calls queryset.count() and then queryset.values_list(), resulting in two database queries per entity type. This could be optimized by fetching both the count and examples in a single query.

def summarize(queryset, label, example_attr):
    count = queryset.count()
    if count == 0:
        return None
-   examples = list(queryset.values_list(example_attr, flat=True)[:max_examples])
+   # Get both count and examples in one query
+   examples_queryset = queryset[:max_examples]
+   examples = [getattr(obj, example_attr) for obj in examples_queryset]
    example_str = ", ".join(str(e) for e in examples)
    return f"{count} {label}{'s' if count != 1 else ''} (e.g., {example_str})"

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frontend/src/app/snapshots/[id]/page.tsx (3)

38-68: Add error handling to the summary parser function.

The parsing function works well for the expected format, but lacks error handling for edge cases.

 const parseSnapshotSummary = (summary: string): ParsedSummary => {
   const result: ParsedSummary = {
     users: { count: 0, examples: [] },
     projects: { count: 0, examples: [] },
     chapters: { count: 0, examples: [] },
     issues: { count: 0, examples: [] },
     releases: { count: 0, examples: [] },
   }

   if (!summary) return result

   const sections = [
     { key: 'users', pattern: /(\d+) users \(e\.g\.,\s*([^)]+)\)/i },
     { key: 'projects', pattern: /(\d+) projects \(e\.g\.,\s*([^)]+)\)/i },
     { key: 'chapters', pattern: /(\d+) chapters \(e\.g\.,\s*([^)]+)\)/i },
     { key: 'issues', pattern: /(\d+) issues \(e\.g\.,\s*([^)]+)\)/i },
     { key: 'releases', pattern: /(\d+) releases \(e\.g\.,\s*([^)]+)\)/i },
   ]

   sections.forEach((section) => {
     const match = summary.match(section.pattern)
     if (match && match.length >= 3) {
+      const count = parseInt(match[1], 10)
       result[section.key as keyof ParsedSummary] = {
-        count: parseInt(match[1], 10),
+        count: isNaN(count) ? 0 : count,
-        examples: match[2].split(',').map((s) => s.trim()),
+        examples: match[2] ? match[2].split(',').map((s) => s.trim()).filter(Boolean) : [],
       }
     }
   })

   return result
 }

---

165-195: Well-implemented summary section with responsive grid layout.

The summary section is cleanly implemented with a responsive grid layout and consistent card styling. The conditional rendering ensures it only appears when data is available.

Consider extracting the summary card into a reusable component since all cards follow the same structure:

// Suggested component extraction (not for direct implementation)
const SummaryCard = ({ label, count, examples, icon }) => (
  <div className="flex items-start gap-4 rounded-lg border p-4 shadow-sm dark:border-gray-700">
    <FontAwesomeIcon icon={icon} className="h-6 w-6 text-blue-500" />
    <div>
      <h3 className="text-lg font-semibold text-gray-800 dark:text-gray-100">
        {count} {label}
      </h3>
      <p className="text-sm text-gray-600 dark:text-gray-400">
        {examples.length > 0 ? `e.g., ${examples.join(', ')}` : 'No examples available'}
      </p>
    </div>
  </div>
);

---

187-189: Handle empty examples array in summary cards.

The current implementation doesn't handle the case where there are no examples for a category.

 <p className="text-sm text-gray-600 dark:text-gray-400">
-  e.g., {data.examples.join(', ')}
+  {data.examples.length > 0 ? `e.g., ${data.examples.join(', ')}` : 'No examples available'}
 </p>

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frontend/__tests__/unit/pages/SnapshotDetails.test.tsx (1)

102-119: Well-structured test case for new snapshot summary feature

The test case follows the existing patterns in the test file and effectively verifies that the new snapshot summary feature is correctly rendered. It checks for the presence of the summary heading and the specific entity counts that would be parsed from the summary string provided by the backend.

Consider also testing for the presence of the icons that accompany each statistic, since the AI summary mentions that the implementation includes displaying icons alongside the counts.

+ expect(screen.getByTestId('user-icon')).toBeInTheDocument();
+ expect(screen.getByTestId('project-icon')).toBeInTheDocument();
+ expect(screen.getByTestId('chapter-icon')).toBeInTheDocument();
+ expect(screen.getByTestId('issue-icon')).toBeInTheDocument();
+ expect(screen.getByTestId('release-icon')).toBeInTheDocument();

This assumes that the icons have been assigned appropriate test IDs. If not, you might need to adapt the selectors based on how icons are actually implemented.

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