#!/bin/bash

##############################################
# Snapshot 后端部署脚本
# 适用于 Linux 环境
##############################################

# 颜色输出
RED='\033[0;31m'
GREEN='\033[0;32m'
YELLOW='\033[1;33m'
NC='\033[0m' # No Color

# 打印带颜色的消息
print_info() {
    echo -e "${GREEN}[INFO]${NC} $1"
}

print_error() {
    echo -e "${RED}[ERROR]${NC} $1"
}

print_warning() {
    echo -e "${YELLOW}[WARNING]${NC} $1"
}

# 检查命令是否存在
command_exists() {
    command -v "$1" >/dev/null 2>&1
}

echo "============================================"
echo "Snapshot 后端部署脚本"
echo "============================================"
echo

# 1. 检查Java环境
echo "[1/6] 检查Java环境..."
if ! command_exists java; then
    print_error "未检测到Java环境"
    echo "请安装 Java 17 或更高版本"
    exit 1
fi

JAVA_VERSION=$(java -version 2>&1 | awk -F '"' '/version/ {print $2}' | cut -d'.' -f1)
if [ "$JAVA_VERSION" -lt 17 ]; then
    print_warning "Java版本较低，建议使用 Java 17+"
fi

print_info "Java环境检查通过"
java -version | head -n 1
echo

# 2. 检查Maven环境
echo "[2/6] 检查Maven环境..."
if ! command_exists mvn; then
    print_error "未检测到Maven环境"
    echo "请安装 Maven"
    exit 1
fi
print_info "Maven环境检查通过"
mvn -version | head -n 1
echo

# 3. 初始化数据库
echo "[3/6] 数据库初始化..."
print_info "默认使用 SQLite，无需初始化数据库。"
echo "如需使用 MySQL，请先修改 application-mysql.properties 中的连接信息。"
echo
read -p "是否跳过数据库初始化？(Y/n): " confirm

if [ "$confirm" = "n" ] || [ "$confirm" = "N" ]; then
    print_info "请先配置 application-mysql.properties，然后手动执行："
    echo "  mysql -u<USER> -p<PASSWORD> < src/main/resources/sql/create.sql"
    exit 0
fi
print_info "跳过数据库初始化"
echo

# 4. 清理之前的构建
echo "[4/6] 清理之前的构建..."
mvn clean
if [ $? -neq 0 ]; then
    print_error "清理失败"
    exit 1
fi
print_info "清理完成"
echo

# 5. 编译打包
echo "[5/6] 编译打包项目..."
mvn clean package -DskipTests
if [ $? -neq 0 ]; then
    print_error "编译打包失败"
    exit 1
fi
print_info "编译打包完成"
echo

# 6. 启动应用
echo "[6/6] 启动应用..."
echo "正在启动Spring Boot应用..."
echo

# 检查是否已经在运行
if pgrep -f "snapshot-backend-1.0.0.jar" > /dev/null; then
    print_warning "检测到Java进程正在运行"
    read -p "是否停止现有进程？(y/n): " kill
    if [ "$kill" = "y" ] || [ "$kill" = "Y" ]; then
        pkill -f "snapshot-backend-1.0.0.jar"
        sleep 2
    fi
fi

# 启动应用
JAR_FILE="target/snapshot-backend-1.0.0.jar"
if [ ! -f "$JAR_FILE" ]; then
    print_error "JAR文件不存在: $JAR_FILE"
    exit 1
fi

print_info "启动命令: nohup java -jar $JAR_FILE > app.log 2>&1 &"
nohup java -jar "$JAR_FILE" > app.log 2>&1 &
PID=$!

# 等待应用启动
print_info "等待应用启动..."
sleep 10

# 检查应用是否启动成功
if ps -p $PID > /dev/null; then
    echo
    echo "============================================"
    print_info "部署完成！"
    echo "============================================"
    echo
    echo "应用PID: $PID"
    echo "应用访问地址: http://localhost:7626"
    echo "日志文件: app.log"
    echo
    echo "查看日志: tail -f app.log"
    echo "停止应用: kill $PID"
    echo
    echo "应用正在后台运行..."
else
    print_error "应用启动失败"
    echo "请查看日志文件: cat app.log"
    exit 1
fi