#!/bin/bash
# 服务启动脚本
# 支持多租户模式：同一服务可部署多个实例（数据库连接不同）

# 获取脚本所在目录
SCRIPT_DIR=$(dirname "$(readlink -f "$0")")
APP_HOME=$(dirname "$SCRIPT_DIR")

# 加载函数：读取properties文件
load_properties() {
    local file="$1"
    if [ -f "$file" ]; then
        while IFS='=' read -r key value; do
            [[ "$key" =~ ^#.*$ ]] && continue
            [[ -z "$key" ]] && continue
            key=$(echo "$key" | xargs)
            value=$(echo "$value" | xargs)
            export "$key=$value"
        done < "$file"
    fi
}

# 1. 加载统一环境配置
load_properties "${APP_HOME}/conf/env.properties"

# 2. 加载服务个性化配置（覆盖统一配置）
load_properties "${APP_HOME}/conf/service.properties"

# 3. 设置默认值
APP_NAME=${APP_NAME:-"unknown"}
INSTANCE_NAME=${INSTANCE_NAME:-${APP_NAME}}
TENANT_ID=${TENANT_ID:-""}

# 4. JAR文件路径
JAR_FILE=$(ls ${APP_HOME}/lib/*.jar 2>/dev/null | head -1)
if [ -z "$JAR_FILE" ]; then
    echo "Error: No JAR file found in ${APP_HOME}/lib/"
    exit 1
fi

# 5. 日志目录（使用INSTANCE_NAME区分不同实例）
LOG_HOME="/datacfs/applogs/${INSTANCE_NAME}"

# 6. PID文件路径
PID_FILE="${APP_HOME}/${INSTANCE_NAME}.pid"

# JVM参数（可通过环境变量覆盖）
JAVA_OPTS="${JAVA_OPTS:--Xms256m -Xmx512m -XX:+UseG1GC -XX:MaxGCPauseMillis=200}"

# 日志参数（从env.properties读取或使用默认值）
LOG_OPTS="-Dlogging.file.path=${LOG_HOME}"
LOG_OPTS="$LOG_OPTS -Dspring.application.name=${APP_NAME}"
LOG_OPTS="$LOG_OPTS -Dlogging.level.root=${LOG_LEVEL_ROOT:-INFO}"
LOG_OPTS="$LOG_OPTS -Dlogging.level.app=${LOG_LEVEL_APP:-DEBUG}"
LOG_OPTS="$LOG_OPTS -Dlogging.pattern.console=${LOG_PATTERN}"

# 多租户参数
TENANT_OPTS=""
if [ -n "${TENANT_ID}" ]; then
    TENANT_OPTS="-DTENANT_ID=${TENANT_ID}"
fi

# 配置文件路径
CONFIG_OPTS="--spring.config.location=${APP_HOME}/conf/application.yml"

# 检查是否已运行
if [ -f "$PID_FILE" ]; then
    PID=$(cat $PID_FILE)
    if ps -p $PID > /dev/null 2>&1; then
        echo "${INSTANCE_NAME} is already running (PID: $PID)"
        exit 1
    fi
fi

# 创建日志目录
mkdir -p ${LOG_HOME}

# 启动服务
echo "Starting ${INSTANCE_NAME}..."
echo "  APP_NAME: ${APP_NAME}"
echo "  INSTANCE_NAME: ${INSTANCE_NAME}"
echo "  APP_HOME: ${APP_HOME}"
echo "  LOG_HOME: ${LOG_HOME}"
echo "  JAVA_OPTS: ${JAVA_OPTS}"
if [ -n "${TENANT_ID}" ]; then
    echo "  TENANT_ID: ${TENANT_ID}"
fi

nohup java $JAVA_OPTS $LOG_OPTS $TENANT_OPTS -jar $JAR_FILE $CONFIG_OPTS > /dev/null 2>&1 &

# 保存PID
echo $! > $PID_FILE
echo "${INSTANCE_NAME} started (PID: $(cat $PID_FILE))"