package metrics

import (
	"github.com/prometheus/client_golang/prometheus"
	"github.com/prometheus/client_golang/prometheus/promauto"
)

var (
	// RequestCounter 请求计数器
	RequestCounter = promauto.NewCounterVec(
		prometheus.CounterOpts{
			Name: "hospital_pay_requests_total",
			Help: "请求总数，按功能码分类",
		},
		[]string{"function_code"},
	)

	// RequestDuration 请求处理时间
	RequestDuration = promauto.NewHistogramVec(
		prometheus.HistogramOpts{
			Name:    "hospital_pay_request_duration_seconds",
			Help:    "请求处理时间（秒）",
			Buckets: prometheus.DefBuckets,
		},
		[]string{"function_code"},
	)

	// ErrorCounter 错误计数器
	ErrorCounter = promauto.NewCounterVec(
		prometheus.CounterOpts{
			Name: "hospital_pay_errors_total",
			Help: "错误总数，按功能码和错误码分类",
		},
		[]string{"function_code", "error_code"},
	)

	// ActiveConnections 活跃连接数
	ActiveConnections = promauto.NewGauge(
		prometheus.GaugeOpts{
			Name: "hospital_pay_active_connections",
			Help: "当前活跃连接数",
		},
	)
)