# 变量定义
APP_NAME = java11-hello-world
JAVA_VERSION = 11
MAIN_CLASS = com.example.HelloWorld
SOURCE_DIR = src/main/java
BUILD_DIR = build
CLASSES_DIR = $(BUILD_DIR)/classes
JAR_FILE = $(BUILD_DIR)/hello-world.jar
APP_PORT = $(or $(APP_PORT_1),8080)
LOG_FILE = $(abspath $(dir $(lastword $(MAKEFILE_LIST))))/.logs/app.log
PID_FILE = $(abspath $(dir $(lastword $(MAKEFILE_LIST))))/.logs/app.pid

# Java编译器设置
JAVAC = javac
JAVA = java
JAR = jar

# 编译标志
JAVAC_FLAGS = -source $(JAVA_VERSION) -target $(JAVA_VERSION) -d $(CLASSES_DIR) -encoding UTF-8

# 默认目标
.PHONY: all
all: install

# 安装命令
.PHONY: install
install:
	@echo "检查 Java 版本..."
	@$(JAVA) -version
	@echo "检查项目是否已编译..."
	@if [ ! -d "$(CLASSES_DIR)" ]; then \
		echo "正在编译Java源代码..."; \
		mkdir -p $(CLASSES_DIR); \
		$(JAVAC) $(JAVAC_FLAGS) -cp $(SOURCE_DIR) $(SOURCE_DIR)/com/example/*.java; \
		echo "✅ Java源代码编译完成"; \
	else \
		echo "✅ Java源代码已编译"; \
	fi
	@echo "✅ 安装完成！Java项目已准备就绪"

# 运行命令（后台运行HTTP服务器）
.PHONY: run
run: install
	@echo "正在启动 Java HTTP 服务器..."
	@mkdir -p $(dir $(LOG_FILE))
	@if [ -f "$(PID_FILE)" ]; then \
		echo "服务器已在运行中，PID: $$(cat $(PID_FILE))"; \
		exit 1; \
	fi
	@echo "启动服务器在端口 $(APP_PORT)..."
	@APP_PORT_1=$(APP_PORT) nohup $(JAVA) -Dfile.encoding=UTF-8 -cp $(CLASSES_DIR) $(MAIN_CLASS) > $(LOG_FILE) 2>&1 & echo $$! > $(PID_FILE)
	@echo "✅ Java HTTP 服务器已启动，PID: $$(cat $(PID_FILE))"
	@echo "服务器运行在: http://localhost:$(APP_PORT)/"
	@echo "查看日志: tail -f $(LOG_FILE)"

# 停止命令
.PHONY: stop
stop: kill

# 强制杀死所有相关Java进程
.PHONY: kill
kill:
	@echo "正在查找并杀死所有相关的Java进程..."
	@PIDS=$$(ps aux | grep -E "java.*$(MAIN_CLASS)|java.*$(APP_NAME)" | grep -v grep | awk '{print $$2}'); \
	if [ -n "$$PIDS" ]; then \
		echo "找到相关进程: $$PIDS"; \
		for PID in $$PIDS; do \
			echo "正在杀死进程 $$PID..."; \
			kill -9 $$PID 2>/dev/null || true; \
		done; \
		sleep 1; \
		echo "✅ 所有相关Java进程已被强制停止"; \
	else \
		echo "未找到相关的Java进程"; \
	fi
	@rm -f $(PID_FILE)
	@echo "✅ 强制停止操作完成"

# 重启命令
.PHONY: restart
restart: stop run

# 查看状态
.PHONY: status
status:
	@if [ -f "$(PID_FILE)" ]; then \
		PID=$$(cat $(PID_FILE)); \
		if ps -p $$PID > /dev/null 2>&1; then \
			echo "✅ 服务器正在运行，PID: $$PID"; \
			echo "端口: $(APP_PORT)"; \
			echo "日志: $(LOG_FILE)"; \
		else \
			echo "❌ 服务器未运行（PID文件存在但进程不存在）"; \
			rm -f $(PID_FILE); \
		fi; \
	else \
		echo "❌ 服务器未运行"; \
	fi

# 创建JAR文件
.PHONY: jar
jar: install
	@echo "创建JAR文件..."
	$(JAR) cfe $(JAR_FILE) $(MAIN_CLASS) -C $(CLASSES_DIR) .
	@echo "JAR文件已创建: $(JAR_FILE)"

# 运行JAR文件
.PHONY: run-jar
run-jar: jar
	@echo "运行JAR文件..."
	$(JAVA) -jar $(JAR_FILE)

# 清理编译文件
.PHONY: clean
clean:
	@echo "清理编译文件..."
	rm -rf $(BUILD_DIR)
	@echo "清理完成!"

# 显示帮助信息
.PHONY: help
help:
	@echo "Java 11 HTTP 服务器项目"
	@echo ""
	@echo "可用命令:"
	@echo "  make install      - 安装依赖并编译项目"
	@echo "  make run          - 启动HTTP服务器（后台运行）"
	@echo "  make stop         - 停止HTTP服务器（优雅停止）"
	@echo "  make kill         - 强制杀死所有相关Java进程"
	@echo "  make restart      - 重启HTTP服务器"
	@echo "  make status       - 查看服务器状态"
	@echo "  make jar          - 创建JAR文件"
	@echo "  make run-jar      - 运行JAR文件"
	@echo "  make clean        - 清理编译文件"
	@echo "  make help         - 显示此帮助信息"
	@echo ""
	@echo "示例:"
	@echo "  make run          # 启动服务器"
	@echo "  make status       # 查看状态"
	@echo "  make stop         # 优雅停止服务器"
	@echo "  make kill         # 强制停止所有相关进程"
	@echo "  make restart      # 重启服务器"
	@echo ""
	@echo "环境变量:"
	@echo "  APP_PORT_1        - 服务器端口（默认: 8080）"
