#!/bin/bash

set -e

echo "🔍 配置监控和告警..."

# 创建监控配置目录
mkdir -p monitoring

# 创建Prometheus配置
cat > monitoring/prometheus.yml << 'EOF'
global:
  scrape_interval: 15s
  evaluation_interval: 15s

scrape_configs:
  - job_name: 'novalon-website'
    static_configs:
      - targets: ['localhost:3000']
    metrics_path: '/api/health'
EOF

# 创建Grafana仪表板配置
cat > monitoring/grafana-dashboard.json << 'EOF'
{
  "dashboard": {
    "title": "Novalon Website Monitoring",
    "panels": [
      {
        "title": "HTTP Requests",
        "targets": [
          {
            "expr": "rate(http_requests_total[5m])"
          }
        ]
      },
      {
        "title": "Response Time",
        "targets": [
          {
            "expr": "histogram_quantile(0.95, rate(http_request_duration_seconds_bucket[5m]))"
          }
        ]
      },
      {
        "title": "Error Rate",
        "targets": [
          {
            "expr": "rate(http_requests_total{status=~\"5..\"}[5m])"
          }
        ]
      }
    ]
  }
}
EOF

# 创建告警规则
cat > monitoring/alerts.yml << 'EOF'
groups:
  - name: novalon-website
    rules:
      - alert: HighErrorRate
        expr: rate(http_requests_total{status=~\"5..\"}[5m]) > 0.05
        for: 5m
        labels:
          severity: critical
        annotations:
          summary: "High error rate detected"
          description: "Error rate is {{ $value }}"

      - alert: HighResponseTime
        expr: histogram_quantile(0.95, rate(http_request_duration_seconds_bucket[5m])) > 1
        for: 5m
        labels:
          severity: warning
        annotations:
          summary: "High response time detected"
          description: "95th percentile response time is {{ $value }}s"

      - alert: ServiceDown
        expr: up{job=\"novalon-website\"} == 0
        for: 1m
        labels:
          severity: critical
        annotations:
          summary: "Service is down"
          description: "Novalon website service is not responding"
EOF

echo "✅ 监控和告警配置完成！"
echo "📊 Prometheus配置: monitoring/prometheus.yml"
echo "📈 Grafana仪表板: monitoring/grafana-dashboard.json"
echo "🚨 告警规则: monitoring/alerts.yml"