Makefile

# ─── OS Detection ────────────────────────────────────────────────────────────
ifeq ($(OS),Windows_NT)
    MVN       := mvnw.cmd
    KILL_JAVA := taskkill /F /IM java.exe
else
    MVN       := ./mvnw
    KILL_JAVA := pkill -f "java -jar" || true
endif

JAVA    := java
JAR_GW  := api-gateway/target/api-gateway.jar
JAR_ORD := order-service/target/order-service.jar
JAR_PAY := payment-service/target/payment-service.jar
JAR_NOT := notification-service/target/notification-service.jar

.PHONY: all build start stop docker-up docker-down test clean help

# ─── Targets ─────────────────────────────────────────────────────────────────

all: docker-up build start

build:
ifeq ($(OS),Windows_NT)
	$(MVN) clean package -DskipTests
else
	chmod +x mvnw
	$(MVN) clean package -DskipTests
endif

docker-up:
	docker-compose up -d

docker-down:
	docker-compose down

# Windows: opens each service in a new terminal window.
# Linux/Mac: runs each service in the background, logging to *.log files.
start:
ifeq ($(OS),Windows_NT)
	cmd /C start "API Gateway"          $(JAVA) -jar $(JAR_GW)
	cmd /C start "Order Service"        $(JAVA) -jar $(JAR_ORD)
	cmd /C start "Payment Service"      $(JAVA) -jar $(JAR_PAY)
	cmd /C start "Notification Service" $(JAVA) -jar $(JAR_NOT)
else
	$(JAVA) -jar $(JAR_GW)  > api-gateway.log  2>&1 &
	$(JAVA) -jar $(JAR_ORD) > order-service.log 2>&1 &
	$(JAVA) -jar $(JAR_PAY) > payment-service.log 2>&1 &
	$(JAVA) -jar $(JAR_NOT) > notification-service.log 2>&1 &
	@echo "Services started. Follow logs with: tail -f api-gateway.log"
endif

stop:
	-$(KILL_JAVA)

test:
	curl -s -X POST http://localhost:8080/api/order \
	  -H "Content-Type: application/json" \
	  -d '{"id":1,"product":"Widget","quantity":2,"price":19.99}'

clean:
	$(MVN) clean

help:
	@echo ""
	@echo "  make all         - docker-up + build + start"
	@echo "  make build       - compile and package all JARs"
	@echo "  make docker-up   - start RabbitMQ"
	@echo "  make docker-down - stop RabbitMQ"
	@echo "  make start       - launch all four services"
	@echo "  make stop        - kill all Java processes"
	@echo "  make test        - POST a test order to the API"
	@echo "  make clean       - remove build artifacts"
	@echo ""