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skills/code-refactoring/scripts/check-complexity.sh

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+#!/bin/bash
+# Automated Complexity Checking Script
+# Purpose: Verify code complexity meets thresholds
+# Origin: Iteration 1 - Problem V1 (No Automated Complexity Checking)
+# Version: 1.0
+
+set -e  # Exit on error
+
+# Configuration
+COMPLEXITY_THRESHOLD=${COMPLEXITY_THRESHOLD:-10}
+PACKAGE_PATH=${1:-"internal/query"}
+REPORT_FILE=${2:-"complexity-report.txt"}
+
+# Colors for output
+RED='\033[0;31m'
+GREEN='\033[0;32m'
+YELLOW='\033[1;33m'
+NC='\033[0m' # No Color
+
+# Check if gocyclo is installed
+if ! command -v gocyclo &> /dev/null; then
+    echo -e "${RED}❌ gocyclo not found${NC}"
+    echo "Install with: go install github.com/fzipp/gocyclo/cmd/gocyclo@latest"
+    exit 1
+fi
+
+# Header
+echo "========================================"
+echo "Cyclomatic Complexity Check"
+echo "========================================"
+echo "Package: $PACKAGE_PATH"
+echo "Threshold: $COMPLEXITY_THRESHOLD"
+echo "Report: $REPORT_FILE"
+echo "========================================"
+echo ""
+
+# Run gocyclo
+echo "Running gocyclo..."
+gocyclo -over 1 "$PACKAGE_PATH" > "$REPORT_FILE"
+gocyclo -avg "$PACKAGE_PATH" >> "$REPORT_FILE"
+
+# Parse results
+TOTAL_FUNCTIONS=$(grep -c "^[0-9]" "$REPORT_FILE" | head -1)
+HIGH_COMPLEXITY=$(gocyclo -over "$COMPLEXITY_THRESHOLD" "$PACKAGE_PATH" | grep -c "^[0-9]" || echo "0")
+AVERAGE_COMPLEXITY=$(grep "^Average:" "$REPORT_FILE" | awk '{print $2}')
+
+# Find highest complexity function
+HIGHEST_COMPLEXITY_LINE=$(head -1 "$REPORT_FILE")
+HIGHEST_COMPLEXITY=$(echo "$HIGHEST_COMPLEXITY_LINE" | awk '{print $1}')
+HIGHEST_FUNCTION=$(echo "$HIGHEST_COMPLEXITY_LINE" | awk '{print $3}')
+HIGHEST_FILE=$(echo "$HIGHEST_COMPLEXITY_LINE" | awk '{print $4}')
+
+# Display summary
+echo "Summary:"
+echo "--------"
+echo "Total functions analyzed: $TOTAL_FUNCTIONS"
+echo "Average complexity: $AVERAGE_COMPLEXITY"
+echo "Functions over threshold ($COMPLEXITY_THRESHOLD): $HIGH_COMPLEXITY"
+echo ""
+
+if [ "$HIGH_COMPLEXITY" -gt 0 ]; then
+    echo -e "${YELLOW}⚠️  High Complexity Functions:${NC}"
+    gocyclo -over "$COMPLEXITY_THRESHOLD" "$PACKAGE_PATH" | while read -r line; do
+        complexity=$(echo "$line" | awk '{print $1}')
+        func=$(echo "$line" | awk '{print $3}')
+        file=$(echo "$line" | awk '{print $4}')
+        echo "  - $func: $complexity (in $file)"
+    done
+    echo ""
+fi
+
+echo "Highest complexity function:"
+echo "  $HIGHEST_FUNCTION: $HIGHEST_COMPLEXITY (in $HIGHEST_FILE)"
+echo ""
+
+# Check if complexity threshold is met
+if [ "$HIGH_COMPLEXITY" -eq 0 ]; then
+    echo -e "${GREEN}✅ PASS: No functions exceed complexity threshold of $COMPLEXITY_THRESHOLD${NC}"
+    exit 0
+else
+    echo -e "${RED}❌ FAIL: $HIGH_COMPLEXITY function(s) exceed complexity threshold${NC}"
+    echo ""
+    echo "Recommended actions:"
+    echo "  1. Refactor high-complexity functions"
+    echo "  2. Use Extract Method pattern to break down complex logic"
+    echo "  3. Target: Reduce all functions to <$COMPLEXITY_THRESHOLD complexity"
+    echo ""
+    echo "See report for details: $REPORT_FILE"
+    exit 1
+fi