updage

internal/quality/plugins/go/analyzers/advanced.go

@@ -268,7 +268,7 @@ type CouplingDetector struct {
 func NewCouplingDetector(finder quality.FileFinder) *CouplingDetector {
 	return &CouplingDetector{
 		BaseDetector: quality.NewBaseDetector("coupling", quality.SeverityT3, finder),
-		maxFanOut:    10,
+		maxFanOut:    20, // Increased from 10 to 20 for more realistic threshold
 	}
 }
 
@@ -330,7 +330,11 @@ func (d *CouplingDetector) Detect(ctx context.Context, path string, config *qual
 
 	for pkg, importedBy := range pkgImportedBy {
 		fanIn := len(importedBy)
-		if fanIn > d.maxFanOut*2 {
+		// Skip standard library packages from fan-in analysis
+		if d.isStandardLibraryPackage(pkg) {
+			continue
+		}
+		if fanIn > d.maxFanOut*3 { // Increased threshold for fan-in
 			finding := quality.Finding{
 				ID:          fmt.Sprintf("coupling_fanin::%s", pkg),
 				Type:        "coupling",
@@ -339,7 +343,7 @@ func (d *CouplingDetector) Detect(ctx context.Context, path string, config *qual
 				File:        pkg,
 				Line:        1,
 				Severity:    quality.SeverityT2,
-				Score:       fanIn/5 - d.maxFanOut/5,
+				Score:       fanIn/10 - d.maxFanOut/10, // Reduced scoring
 				Status:      quality.StatusOpen,
 				Metadata: map[string]string{
 					"package":     pkg,
@@ -356,6 +360,21 @@ func (d *CouplingDetector) Detect(ctx context.Context, path string, config *qual
 	return findings, nil
 }
 
+func (d *CouplingDetector) isStandardLibraryPackage(pkgPath string) bool {
+	// Standard library packages that commonly have high fan-in
+	standardLibs := []string{
+		"fmt", "time", "strings", "context", "os", "io", "net/http",
+		"encoding/json", "path/filepath", "sync", "math", "regexp",
+	}
+
+	for _, lib := range standardLibs {
+		if strings.Contains(pkgPath, lib) && !strings.Contains(pkgPath, "github.com") {
+			return true
+		}
+	}
+	return false
+}
+
 func (d *CouplingDetector) detectHubPackages(pkgImports, pkgImportedBy map[string][]string) []quality.Finding {
 	var findings []quality.Finding