Duplicate Code: Identical Empty State Widgets (EmptyCard and InitialCard)

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Analysis of commit eaf30ea

Summary

Two nearly identical widget classes exist for displaying empty states: EmptyCard and InitialCard. Both widgets have identical implementations with only the class name differing, representing clear code duplication that increases maintenance burden.

Duplication Details

Pattern: Identical Empty State Widget Classes

• Severity: Medium

• Occurrences: 2 files

• Total Duplicated Lines: 17 lines

• Locations:

  • lib/ui/widgets/empty_card.dart (lines 1-17)
  • lib/ui/widgets/initial_card.dart (lines 1-17)

• Code Sample:

class EmptyCard extends StatelessWidget {
  const EmptyCard({
    Key? key,
  }) : super(key: key);

  `@override`
  Widget build(BuildContext context) {
    return Center(
      child: Column(
        mainAxisAlignment: MainAxisAlignment.center,
        children: const [],
      ),
    );
  }
}

The InitialCard widget is structurally identical with only the class name changed.

Impact Analysis

• Maintainability: Any changes to the empty state display logic must be duplicated across both files, increasing the risk of inconsistency
• Bug Risk: If a bug fix or enhancement is applied to one widget but not the other, it creates inconsistent behavior
• Code Bloat: Two files and two widget exports for what is essentially the same component
• Semantic Confusion: Having two separate classes suggests different purposes, but the implementations are identical

Refactoring Recommendations

1. Consolidate into Single Widget (Recommended)

   • Keep only one widget class (suggest EmptyStateCard for clarity)
   • Update all references in lib/ui/pages/home.dart:75-77
   • Remove the unused widget file
   • Update the widgets barrel export file
   • Estimated effort: 15-30 minutes
   • Benefits: Eliminates duplication, clearer intent, easier maintenance

2. Add Configuration Parameter

   • If there's a planned distinction between "empty" and "initial" states:
     • Add a message or icon parameter to the widget
     • Create named constructors or factory methods for different states
   • Estimated effort: 30-45 minutes
   • Benefits: Maintains semantic distinction while sharing implementation

Implementation Checklist

• Review duplication findings
• Determine if EmptyCard and InitialCard should have different behavior in the future
• Choose refactoring approach (consolidate or parameterize)
• Update all widget references in HomePage and other consumers
• Remove unused widget file and update exports
• Verify functionality with existing tests
• Add content to the empty state (currently displays nothing)

Analysis Metadata

• Analyzed Files: 32 .dart files
• Detection Method: Semantic code analysis
• Commit: eaf30ea
• Analysis Date: 2026-02-19

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