[duplicate-code] Duplicate Code Analysis Report - Commit 72ddf9f

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🔍 Duplicate Code Analysis Report

Analysis of commit 72ddf9f - "refactor: modular flag and config registration to reduce merge conflicts"

Summary

This automated analysis identified 3 significant duplication patterns across the recent refactoring that introduced modular flag and config registration. While the refactoring successfully reduced merge conflicts by splitting functionality into separate files, it inadvertently created code duplication patterns that could be consolidated.

Detected Patterns

This analysis found 3 significant duplication patterns with varying severity:

1. Environment Variable Default Pattern - Severity: Medium - See sub-issue [duplicate-code] Duplicate Code Pattern: Environment Variable Default Functions #582

   • 3 nearly identical getDefault*() functions with env var fallback logic
   • Located in: flags_difc.go, flags_logging.go

2. Config Struct Duplication - Severity: High - See sub-issue #aw_72ddf9f03ghi

   • Parallel struct hierarchies for TOML and JSON config formats
   • 3 pairs of duplicated structs: Config/StdinConfig, GatewayConfig/StdinGatewayConfig, ServerConfig/StdinServerConfig
   • Located in: config_core.go, config_stdin.go

3. Logger Initialization Pattern - Severity: Low - See sub-issue #aw_72ddf9f04jkl

   • Similar Init*Logger() function structure across 3 logger types
   • Already uses generic initLogger() helper - duplication is intentional per design comments
   • Located in: file_logger.go, jsonl_logger.go, markdown_logger.go

Overall Impact

• Total Duplicated Lines: ~80-100 lines of similar/duplicated code
• Affected Files: 8 Go files (3 flag files, 2 config files, 3 logger files)
• Maintainability Risk: Medium - Pattern Lpcox/initial implementation #2 (Config Struct Duplication) poses the highest risk as struct changes must be synchronized manually
• Refactoring Priority: Medium - Focus on Pattern Configure as a Go CLI tool #1 and Lpcox/initial implementation #2 first

Next Steps

1. Review individual pattern sub-issues for detailed analysis
2. Prioritize refactoring Pattern Lpcox/initial implementation #2 (Config Structs) - highest maintainability risk
3. Refactor Pattern Configure as a Go CLI tool #1 (Environment Defaults) - straightforward extraction opportunity
4. Pattern Lpcox/initial implementation #3 (Logger Init) can be skipped - intentional design per code comments

Analysis Metadata

• Analyzed Files: 63 Go files (excluding test files, workflow files, and agent configs)
• Detection Method: Direct code inspection and pattern matching
• Commit: 72ddf9f (refactor: modular flag and config registration to reduce merge conflicts)
• Analysis Date: 2026-02-02T10:23:38.403Z
• Triggered by: @pelikhan