#!/bin/bash
# install.sh — 部署健康监控到服务器
#
# 用法（在服务器上 root 跑）：
#   cd /tmp && tar xzf health-monitor.tar.gz && cd health-monitor && bash install.sh
#
# 前置条件：
#   1. /etc/health-monitor.env 已存在并填好 QQ_AUTH_CODE（参考 health-monitor.env.example）

set -e

if [ "$(id -u)" -ne 0 ]; then
  echo "必须 root 运行" >&2
  exit 1
fi

SCRIPT_DIR="$(cd "$(dirname "$0")" && pwd)"

# 1. 凭证
if [ ! -f /etc/health-monitor.env ]; then
  echo "ERROR: /etc/health-monitor.env 不存在，请按以下步骤创建：" >&2
  echo "  cp $SCRIPT_DIR/health-monitor.env.example /etc/health-monitor.env" >&2
  echo "  vim /etc/health-monitor.env   # 填入 QQ_AUTH_CODE" >&2
  echo "  chmod 600 /etc/health-monitor.env" >&2
  exit 1
fi
chmod 600 /etc/health-monitor.env

# 检查 QQ_AUTH_CODE 是否还是占位符
if grep -q 'QQ_AUTH_CODE=把你的' /etc/health-monitor.env; then
  echo "ERROR: /etc/health-monitor.env 还是占位符，请填入真实 QQ 邮箱授权码" >&2
  exit 1
fi

# 2. 主脚本
install -m 755 "$SCRIPT_DIR/health-monitor.sh" /usr/local/bin/health-monitor.sh
install -m 755 "$SCRIPT_DIR/health-send-mail.py" /usr/local/bin/health-send-mail.py
install -m 755 "$SCRIPT_DIR/health-push.py" /usr/local/bin/health-push.py

# 3. 状态目录
mkdir -p /var/lib/health-monitor /var/log

# 4. cron (每 5 分钟，错开 :03 避开整点)
cat > /etc/cron.d/health-monitor <<'EOF'
# 健康监控：每 5 分钟（错开 :03）检测 /health + /api/navigation/config
# 失败连续 2 次才告警，同一故障 30 分钟内只发一次
SHELL=/bin/bash
PATH=/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin
MAILTO=""

3,8,13,18,23,28,33,38,43,48,53,58 * * * * root /usr/local/bin/health-monitor.sh >> /var/log/health-monitor.log 2>&1
EOF
chmod 644 /etc/cron.d/health-monitor

# 5. 立即跑一次 dry-run（用真实凭证）验证通路
echo ""
echo "=== 安装完成，立即跑一次 smoke test ==="
bash /usr/local/bin/health-monitor.sh
echo ""
echo "退出码: $?"
echo "日志:   tail -20 /var/log/health-monitor.log"
echo ""
echo "查看 cron:   cat /etc/cron.d/health-monitor"
echo "手动触发:   bash /usr/local/bin/health-monitor.sh"
echo "测试告警:   pm2 stop server && bash /usr/local/bin/health-monitor.sh"