#!/bin/bash
# ====================================================
# 工作日志服务平台 - 应用停止脚本
# ====================================================

# 应用配置
APP_NAME="worklog-api"
APP_HOME="/opt/worklog/${APP_NAME}"
PID_FILE="${APP_HOME}/${APP_NAME}.pid"

# 检查 PID 文件是否存在
if [ ! -f "${PID_FILE}" ]; then
    echo "应用未运行（找不到 PID 文件）"
    exit 0
fi

# 读取 PID
PID=$(cat "${PID_FILE}")

# 检查进程是否存在
if ! ps -p ${PID} > /dev/null 2>&1; then
    echo "应用未运行（进程不存在）"
    rm -f "${PID_FILE}"
    exit 0
fi

echo "========================================="
echo "停止应用: ${APP_NAME}"
echo "PID: ${PID}"
echo "========================================="

# 优雅停止（发送 SIGTERM）
echo "发送停止信号..."
kill ${PID}

# 等待进程结束（最多等待 30 秒）
TIMEOUT=30
COUNT=0
while ps -p ${PID} > /dev/null 2>&1; do
    if [ ${COUNT} -ge ${TIMEOUT} ]; then
        echo "WARNING: 应用未在 ${TIMEOUT} 秒内停止，强制终止..."
        kill -9 ${PID}
        sleep 2
        break
    fi
    
    echo "等待应用停止... (${COUNT}/${TIMEOUT})"
    sleep 1
    COUNT=$((COUNT + 1))
done

# 确认进程已停止
if ps -p ${PID} > /dev/null 2>&1; then
    echo "ERROR: 无法停止应用"
    exit 1
else
    echo "应用已停止"
    rm -f "${PID_FILE}"
    exit 0
fi