Fix gradle and add workflows

build_all.sh

@@ -1,37 +1,102 @@
 #!/bin/bash
 set -e
 
-echo "=== Building j3270 (Desktop JAR) and a3270 (Android APK) ==="
+SCRIPT_DIR="$(cd "$(dirname "$0")" && pwd)"
+cd "$SCRIPT_DIR"
 
-export JAVA_HOME="/Users/rudi/.sdkman/candidates/java/21.0.6-sem"
-export ANDROID_HOME="/Users/rudi/Library/Android/sdk"
+echo "=== Building j3270 Terminal Emulator ==="
 
-GRADLE_BIN="/Users/rudi/.gradle/wrapper/dists/gradle-8.5-bin/5t9huq95ubn472n8rpzujfbqh/gradle-8.5/bin/gradle"
-BUILD_DIR="$(pwd)/build"
+# 1. Locate Java toolchain
+JAVAC_BIN=""
+JAR_BIN=""
 
-mkdir -p "$BUILD_DIR"
-
-echo "Building Android APK (a3270)..."
-"$GRADLE_BIN" :a3270:assembleDebug
-
-echo "Building Desktop App JAR (j3270)..."
-mkdir -p "$BUILD_DIR/lib3270j" "$BUILD_DIR/j3270"
-"$JAVA_HOME/bin/javac" -d "$BUILD_DIR/lib3270j" $(find lib3270j/src -name "*.java")
-"$JAVA_HOME/bin/javac" -cp "$BUILD_DIR/lib3270j" -d "$BUILD_DIR/j3270" $(find j3270/src -name "*.java")
-
-echo "Main-Class: org.pubvm.j3270.J3270App" > "$BUILD_DIR/MANIFEST.MF"
-echo "" >> "$BUILD_DIR/MANIFEST.MF"
-
-"$JAVA_HOME/bin/jar" cvfm "$BUILD_DIR/j3270.jar" "$BUILD_DIR/MANIFEST.MF" \
-    -C "$BUILD_DIR/lib3270j" . \
-    -C "$BUILD_DIR/j3270" .
-
-# Copy APK to build/
-if [ -f "a3270/build/outputs/apk/debug/a3270-debug.apk" ]; then
-    cp "a3270/build/outputs/apk/debug/a3270-debug.apk" "$BUILD_DIR/a3270.apk"
-    echo "Copied a3270-debug.apk to $BUILD_DIR/a3270.apk"
+if [ -n "$JAVA_HOME" ] && [ -x "$JAVA_HOME/bin/javac" ] && [ -x "$JAVA_HOME/bin/jar" ]; then
+    JAVAC_BIN="$JAVA_HOME/bin/javac"
+    JAR_BIN="$JAVA_HOME/bin/jar"
+elif command -v javac >/dev/null 2>&1 && command -v jar >/dev/null 2>&1; then
+    JAVAC_BIN="$(command -v javac)"
+    JAR_BIN="$(command -v jar)"
+else
+    # Check common SDKMAN / macOS / Linux JDK locations
+    POSSIBLE_HOMES=(
+        "$HOME/.sdkman/candidates/java/current"
+        "/Library/Java/JavaVirtualMachines"/*/Contents/Home
+        "/usr/lib/jvm/default-java"
+        "/usr/lib/jvm/java-21-openjdk"*
+        "/usr/lib/jvm/java-17-openjdk"*
+        "/usr/lib/jvm/java-11-openjdk"*
+    )
+    for h in "${POSSIBLE_HOMES[@]}"; do
+        if [ -d "$h" ] && [ -x "$h/bin/javac" ] && [ -x "$h/bin/jar" ]; then
+            export JAVA_HOME="$h"
+            JAVAC_BIN="$JAVA_HOME/bin/javac"
+            JAR_BIN="$JAVA_HOME/bin/jar"
+            break
+        fi
+    done
 fi
 
+if [ -z "$JAVAC_BIN" ] || [ -z "$JAR_BIN" ]; then
+    echo "ERROR: Java development tools (javac, jar) could not be found."
+    echo "Please install JDK 11+ or set JAVA_HOME."
+    exit 1
+fi
+
+echo "Using Java compiler: $JAVAC_BIN"
+echo "Using JAR utility:   $JAR_BIN"
+
+BUILD_DIR="$SCRIPT_DIR/build"
+rm -rf "$BUILD_DIR/lib3270j" "$BUILD_DIR/j3270" "$BUILD_DIR/MANIFEST.MF"
+mkdir -p "$BUILD_DIR/lib3270j" "$BUILD_DIR/j3270"
+
+# 2. Compile lib3270j
+echo "Compiling lib3270j..."
+LIB_SOURCES=()
+while IFS= read -r -d '' file; do
+    LIB_SOURCES+=("$file")
+done < <(find "$SCRIPT_DIR/lib3270j/src/main/java" -name "*.java" -print0)
+
+if [ ${#LIB_SOURCES[@]} -eq 0 ]; then
+    echo "ERROR: No sources found in lib3270j/src/main/java"
+    exit 1
+fi
+"$JAVAC_BIN" -d "$BUILD_DIR/lib3270j" "${LIB_SOURCES[@]}"
+
+# 3. Compile j3270
+echo "Compiling j3270 application..."
+APP_SOURCES=()
+while IFS= read -r -d '' file; do
+    APP_SOURCES+=("$file")
+done < <(find "$SCRIPT_DIR/j3270/src/main/java" -name "*.java" -print0)
+
+if [ ${#APP_SOURCES[@]} -eq 0 ]; then
+    echo "ERROR: No sources found in j3270/src/main/java"
+    exit 1
+fi
+"$JAVAC_BIN" -cp "$BUILD_DIR/lib3270j" -d "$BUILD_DIR/j3270" "${APP_SOURCES[@]}"
+
+# Copy any resources if present
+if [ -d "$SCRIPT_DIR/j3270/src/main/resources" ]; then
+    cp -r "$SCRIPT_DIR/j3270/src/main/resources/"* "$BUILD_DIR/j3270/" 2>/dev/null || true
+fi
+if [ -d "$SCRIPT_DIR/lib3270j/src/main/resources" ]; then
+    cp -r "$SCRIPT_DIR/lib3270j/src/main/resources/"* "$BUILD_DIR/lib3270j/" 2>/dev/null || true
+fi
+
+# 4. Package executable JAR
+echo "Packaging j3270.jar..."
+cat << 'EOF' > "$BUILD_DIR/MANIFEST.MF"
+Manifest-Version: 1.0
+Main-Class: org.pubvm.j3270.J3270App
+Implementation-Title: j3270
+Implementation-Version: 0.1.0
+Created-By: j3270 build_all.sh
+EOF
+
+"$JAR_BIN" cvfm "$BUILD_DIR/j3270.jar" "$BUILD_DIR/MANIFEST.MF" \
+    -C "$BUILD_DIR/lib3270j" . \
+    -C "$BUILD_DIR/j3270" . > /dev/null
+
 echo "=== Build Complete ==="
-echo "Artifacts in $BUILD_DIR:"
-ls -lh "$BUILD_DIR"/*.jar "$BUILD_DIR"/*.apk 2>/dev/null || true
+echo "Executable JAR created: $BUILD_DIR/j3270.jar"
+ls -lh "$BUILD_DIR/j3270.jar"