Resolve maven only when needed

Author: ViacheslavKlimov

generate-client.sh

@@ -104,18 +104,6 @@ if [ ! -f "$GENERATOR_JAR" ]; then
 fi
 openapi-generator-cli() { java -jar "$GENERATOR_JAR" "$@"; }
 
-# Resolve mvn: prefer M2_HOME/MAVEN_HOME, fall back to PATH
-if [ -n "${M2_HOME:-}" ] && [ -x "$M2_HOME/bin/mvn" ]; then
-  MVN="$M2_HOME/bin/mvn"
-elif [ -n "${MAVEN_HOME:-}" ] && [ -x "$MAVEN_HOME/bin/mvn" ]; then
-  MVN="$MAVEN_HOME/bin/mvn"
-elif command -v mvn >/dev/null 2>&1; then
-  MVN="mvn"
-else
-  echo "Error: mvn not found. Set M2_HOME or MAVEN_HOME, or add mvn to PATH."
-  exit 1
-fi
-
 generate() {
   local edition="$1"
   local spec_file="$SCRIPT_DIR/$edition/spec/openapi.json"
@@ -238,6 +226,18 @@ else
 fi
 
 if [ "$DRY_RUN" = false ]; then
+  # Resolve mvn: prefer M2_HOME/MAVEN_HOME, fall back to PATH
+  if [ -n "${M2_HOME:-}" ] && [ -x "$M2_HOME/bin/mvn" ]; then
+    MVN="$M2_HOME/bin/mvn"
+  elif [ -n "${MAVEN_HOME:-}" ] && [ -x "$MAVEN_HOME/bin/mvn" ]; then
+    MVN="$MAVEN_HOME/bin/mvn"
+  elif command -v mvn >/dev/null 2>&1; then
+    MVN="mvn"
+  else
+    echo "Error: mvn not found. Set M2_HOME or MAVEN_HOME, or add mvn to PATH."
+    exit 1
+  fi
+
   # Apply license headers and stage changes
   if [ "$VERBOSE" = true ]; then
     "$MVN" -f "$SCRIPT_DIR/pom.xml" license:format