4 files changed, 161 insertions, 0 deletions

diff --git a/tools/build.bat b/tools/build.bat
new file mode 100644
index 0000000..eb6b460
--- /dev/null
+++ b/tools/build.bat
@@ -0,0 +1,72 @@
+@echo off
+setlocal enabledelayedexpansion
+
+echo === 1. Cleaning Workspace ===
+if exist bin   rmdir /s /q bin
+if exist stage rmdir /s /q stage
+if exist dist  rmdir /s /q dist
+mkdir bin\classes
+mkdir bin\test-classes
+mkdir stage
+mkdir dist
+
+echo === 2. Compiling Production Code ===
+dir /s /b src\main\java\*.java > sources.txt
+javac -d bin\classes -cp "lib/*" @sources.txt
+if %errorlevel% neq 0 exit /b %errorlevel%
+
+echo === 3. Compiling Test Code ===
+dir /s /b src\test\java\*.java > test-sources.txt
+javac -d bin\test-classes -cp "bin\classes;lib/*" @test-sources.txt
+if %errorlevel% neq 0 exit /b %errorlevel%
+
+echo === 4. Running Automated Tests ===
+set "JUNIT_JAR="
+for %%f in (lib\junit-platform-console-standalone-*.jar) do set "JUNIT_JAR=%%f"
+if not defined JUNIT_JAR (echo JUnit jar missing. & exit /b 1)
+
+rem JUnit's --class-path does NOT expand lib\*  -> build it explicitly
+set "TEST_CP=bin\classes;bin\test-classes"
+for %%j in (lib\*.jar) do set "TEST_CP=!TEST_CP!;%%j"
+
+java -jar "!JUNIT_JAR!" execute -cp "!TEST_CP!" --scan-classpath
+if %errorlevel% neq 0 (
+    echo [X] Tests failed! Aborting build package.
+    exit /b %errorlevel%
+)
+echo [OK] Tests passed successfully!
+
+echo === 5. Extracting Dependencies for Fat JAR ===
+cd stage
+for %%j in (..\lib\*.jar) do (
+    echo %%~nxj | findstr /i "junit-platform-console-standalone" >nul
+    if errorlevel 1 (
+        echo Extracting: %%~nxj
+        jar -xf "%%j"
+    )
+)
+
+rem Strip signatures + manifests (they break repacking) but KEEP
+rem META-INF\services so ServiceLoader-based deps still work at runtime.
+if exist META-INF (
+    del /s /q META-INF\*.SF  >nul 2>&1
+    del /s /q META-INF\*.RSA >nul 2>&1
+    del /s /q META-INF\*.DSA >nul 2>&1
+    del /q    META-INF\MANIFEST.MF >nul 2>&1
+)
+cd ..
+
+echo === 6. Merging Assets into Fat JAR ===
+rem Merge ONLY production classes on top of the extracted deps
+xcopy /e /q /y /i bin\classes\* stage\ >nul
+rem Package the whole tree (deps + your classes), not just stage\classes
+jar cfe dist/app.jar com.example.App -C stage .
+if %errorlevel% neq 0 exit /b %errorlevel%
+
+del sources.txt test-sources.txt >nul 2>&1
+rmdir /s /q stage
+echo ======================================
+echo Fat JAR Created! Run it with:
+echo java -jar dist/app.jar
+echo ======================================
+pause
diff --git a/tools/build.sh b/tools/build.sh
new file mode 100755
index 0000000..6fdf7e1
--- /dev/null
+++ b/tools/build.sh
@@ -0,0 +1,61 @@
+#!/bin/bash
+set -e
+
+echo "=== 1. Cleaning Workspace ==="
+rm -rf bin stage
+mkdir -p bin/classes bin/test-classes stage dist # dist was never created
+
+echo "=== 2. Compiling Production Code ==="
+javac -d bin/classes -cp "lib/*" @<(find src/main/java -name '*.java')
+
+echo "=== 3. Compiling Test Code ==="
+# prod classes are in bin/classes, not bin
+javac -d bin/test-classes -cp "bin/classes:lib/*" @<(find src/test/java -name '*.java')
+
+echo "=== 4. Running Automated Tests ==="
+JUNIT_JAR=$(find lib -maxdepth 1 -name 'junit-platform-console-standalone-*.jar' | head -n 1)
+if [ -z "$JUNIT_JAR" ]; then
+  echo "JUnit jar missing."
+  exit 1
+fi
+
+set +e
+java -jar "$JUNIT_JAR" execute \
+  -cp "bin/classes:bin/test-classes:lib/*" \
+  --scan-classpath
+TEST_STATUS=$?
+set -e
+
+if [ $TEST_STATUS -ne 0 ]; then
+  echo "❌ Tests failed! Aborting build package."
+  exit 1
+fi
+echo "✅ Tests passed successfully!"
+
+echo "=== 5. Extracting Dependencies for Fat JAR ==="
+cd stage
+for jarfile in ../lib/*.jar; do
+  [ -f "$jarfile" ] || continue
+  case "$(basename "$jarfile")" in
+  junit-platform-console-standalone-*) continue ;;
+  esac
+  echo "Extracting: $(basename "$jarfile")"
+  jar -xf "$jarfile"
+done
+
+# Strip signatures + manifests (they break repacking), but KEEP
+# META-INF/services so ServiceLoader-based deps still work at runtime.
+find META-INF -type f \( -name '*.SF' -o -name '*.RSA' -o -name '*.DSA' -o -name 'MANIFEST.MF' \) -delete 2>/dev/null || true
+cd ..
+
+echo "=== 6. Merging Assets into Fat JAR ==="
+# Merge YOUR production classes on top of the extracted deps
+cp -r bin/classes/. stage/
+# Package the whole tree (deps + your classes), not just stage/classes
+jar cfe dist/app.jar com.example.App -C stage .
+
+rm -rf stage
+echo "======================================"
+echo "🎉 Fat JAR Created! Run it with:"
+echo "java -jar dist/app.jar"
+echo "======================================"
diff --git a/tools/run.bat b/tools/run.bat
new file mode 100644
index 0000000..8480652
--- /dev/null
+++ b/tools/run.bat
@@ -0,0 +1,16 @@
+@echo off
+:: clean old binaries
+rmdir /s /q bin
+mkdir bin
+
+:: compile source files and include libraries
+javac -d "bin/classes" -cp "lib/*" src/main/java/com/example/App.java
+
+:: run the application if compilation succeeded
+if %errorlevel% equ 0 (
+    echo --- Running Application ---
+    java -cp "bin/classes;lib/*" com.example.App
+) else (
+    echo Compilation failed.
+)
+pause
diff --git a/tools/run.sh b/tools/run.sh
new file mode 100644
index 0000000..55f1094
--- /dev/null
+++ b/tools/run.sh
@@ -0,0 +1,12 @@
+#!/bin/bash
+
+# clean up
+rm -rf bin && mkdir bin
+
+# run the app if compilation succeeded
+if javac -d "bin/classes" -cp "lib/*" src/main/java/com/example/App.java; then
+  echo "--- Running Application ---"
+  java -cp "bin/classes:lib/*" com.example.App
+else
+  echo "Compilation failed."
+fi