package middleware

import (
	"finclip-app-manager/infrastructure/config"
	"net/http"
	"strconv"
	"strings"

	"time"

	"github.com/gin-gonic/gin"
	"github.com/prometheus/client_golang/prometheus"
	"github.com/prometheus/client_golang/prometheus/promhttp"
)

var (
	//单次请求耗时
	RequestDurationGauge = prometheus.NewGaugeVec(
		prometheus.GaugeOpts{
			Name: "http_request_duration",
			Help: "duration of request.",
		},
		[]string{"interface", "method", "code"},
	)

	//请求次数累加
	RequestCounter = prometheus.NewCounterVec(
		prometheus.CounterOpts{
			Name: "http_request_count",
			Help: "count of request.",
		},
		[]string{"interface", "method", "code"},
	)

	//请求次数耗时累加
	RequestDurationTotalCounter = prometheus.NewCounterVec(
		prometheus.CounterOpts{
			Name: "http_request_duration_total",
			Help: "total duration of request.",
		},
		[]string{"interface", "method", "code"},
	)

	//请求耗时分布
	RequestDurationHistogram = prometheus.NewHistogramVec(
		prometheus.HistogramOpts{
			Name:    "http_request_duration_histogram",
			Help:    "duration histogram of request.",
			Buckets: prometheus.LinearBuckets(20, 20, 10), //第一个桶20起，每个桶间隔20, 共10个桶，这里使用场景是请求耗时，所以单位是ms
		},
		[]string{"interface", "method", "code"},
	)
)

func init() {
	if config.GetConfig().OpenMonitor {
		prometheus.MustRegister(RequestDurationGauge)
		prometheus.MustRegister(RequestCounter)
		prometheus.MustRegister(RequestDurationTotalCounter)
		prometheus.MustRegister(RequestDurationHistogram)

		http.Handle("/metrics", promhttp.Handler())
		go http.ListenAndServe(":"+config.GetConfig().MonitorPort, nil)
	}
}

func RequestDuration() gin.HandlerFunc {
	return func(c *gin.Context) {
		if config.GetConfig().OpenMonitor {
			fullPath := c.FullPath()
			if fullPath == "/ready" || fullPath == "/down" || fullPath == "/test" || fullPath == "/" {
				c.Next()
				return
			}

			start := time.Now()

			c.Next()

			duration := float64(time.Since(start)) / float64(time.Second) * 1000
			//path := GetSimplePath(c.Request.URL.Path)
			path := GetSimplePath(fullPath)
			method := c.Request.Method
			code := strconv.Itoa(c.Writer.Status())

			RequestDurationGauge.WithLabelValues(path, method, code).Set(duration)
			RequestDurationTotalCounter.WithLabelValues(path, method, code).Add(duration)
			RequestDurationHistogram.WithLabelValues(path, method, code).Observe(duration)
		}
	}
}

func RequestCount(c *gin.Context) {
	if config.GetConfig().OpenMonitor {
		fullPath := c.FullPath()

		if fullPath == "/ready" || fullPath == "/down" || fullPath == "/test" || fullPath == "/" {
			c.Next()
			return
		}

		c.Next()

		method := c.Request.Method
		//path := GetSimplePath(c.Request.URL.Path)
		path := GetSimplePath(fullPath)
		code := strconv.Itoa(c.Writer.Status())

		RequestCounter.WithLabelValues(path, method, code).Inc()
	}
}
func GetSimplePath(path string) string {
	simplePath := path
	if strings.Contains(simplePath, "/api/v1/mop/finstore/dev/apps/publishRequest") ||
		strings.Contains(simplePath, "/api/v1/mop/finstore/dev/apps/publish-request") {
		simplePath = "/api/v1/mop/finstore/dev/apps/publish-request"
	} else if strings.Contains(simplePath, "/api/v1/mop/finstore/dev/apps/publishRequestWithdrawal") ||
		strings.Contains(simplePath, "/api/v1/mop/finstore/dev/apps/publish-request-withdrawal") {
		simplePath = "/api/v1/mop/finstore/dev/apps/publish-request-withdrawal"
	} else if strings.Contains(simplePath, "/api/v1/mop/finstore/dev/appsAndReviews") ||
		strings.Contains(simplePath, "/api/v1/mop/finstore/dev/apps-and-reviews") {
		simplePath = "/api/v1/mop/finstore/dev/apps-and-reviews"
	} else if strings.Contains(simplePath, "/api/v1/mop/finstore/admin/linkApplets") ||
		strings.Contains(simplePath, "/api/v1/mop/finstore/admin/link-applets") {
		simplePath = "/api/v1/mop/finstore/admin/link-applets"
	} else if strings.Contains(simplePath, "/api/v1/mop/finstore/admin/statistics/appReviewTrend") ||
		strings.Contains(simplePath, "/api/v1/mop/finstore/admin/statistics/app-review-trend") {
		simplePath = "/api/v1/mop/finstore/admin/statistics/app-review-trend"
	} else if strings.Contains(simplePath, "/api/v1/mop/finstore/ruleEngine/permitPub/:appId") ||
		strings.Contains(simplePath, "/api/v1/mop/finstore/rule-engine/permit-pub/:appId") {
		simplePath = "/api/v1/mop/finstore/rule-engine/permit-pub/:appId"
	} else if strings.Contains(simplePath, "/api/v1/mop/finstore/ruleEngine/app/:appId") ||
		strings.Contains(simplePath, "/api/v1/mop/finstore/rule-engine/app/:appId") {
		simplePath = "/api/v1/mop/finstore/rule-engine/app/:appId"
	} else if strings.Contains(simplePath, "/api/v1/mop/finstore/ruleEngine/app/:appId/:version") ||
		strings.Contains(simplePath, "/api/v1/mop/finstore/rule-engine/app/:appId/:version") {
		simplePath = "/api/v1/mop/finstore/rule-engine/app/:appId/:version"
	} else if strings.Contains(simplePath, "/api/v1/mop/finstore/ruleEngine/grayNotify") ||
		strings.Contains(simplePath, "/api/v1/mop/finstore/rule-engine/gray-notify") {
		simplePath = "/api/v1/mop/finstore/rule-engine/gray-notify"
	} else if strings.Contains(simplePath, "/api/v1/mop/finstore/bindingInfo") ||
		strings.Contains(simplePath, "/api/v1/mop/finstore/binding-info") {
		simplePath = "/api/v1/mop/finstore/binding-info"
		/*else if strings.Contains(simplePath, "/api/v1/mop/finstore/openapi/bindingId") ||
			strings.Contains(simplePath, "/api/v1/mop/finstore/open-api/binding-id") {
			simplePath = "/api/v1/mop/finstore/open-api/binding-id"
		}*/
	} else if strings.Contains(simplePath, "/api/v1/mop/finstore/openapi/app/list") ||
		strings.Contains(simplePath, "/api/v1/mop/finstore/open-api/app/list") {
		simplePath = "/api/v1/mop/finstore/open-api/app/list"
	} else if strings.Contains(simplePath, "/api/v1/mop/finstore/openapi/apps/info") ||
		strings.Contains(simplePath, "/api/v1/mop/finstore/open-api/apps/info") {
		simplePath = "/api/v1/mop/finstore/open-api/apps/info"
	} else if strings.Contains(simplePath, "/api/v1/mop/finstore/openapi/app/search") ||
		strings.Contains(simplePath, "/api/v1/mop/finstore/open-api/app/search") {
		simplePath = "/api/v1/mop/finstore/open-api/app/search"
	} else if strings.Contains(simplePath, "/api/v1/mop/finstore/openapi/appver/:appId/:sequence") ||
		strings.Contains(simplePath, "/api/v1/mop/finstore/open-api/appver/:appId/:sequenceo") {
		simplePath = "/api/v1/mop/finstore/open-api/appver/:appId/:sequence"
	} else if strings.Contains(simplePath, "/api/v1/mop/finstore/openapi/secret") ||
		strings.Contains(simplePath, "/api/v1/mop/finstore/open-api/secret") {
		simplePath = "/api/v1/mop/finstore/open-api/secret"
	} else if strings.Contains(simplePath, "/api/v1/finclip-app-manager/typeConfig") ||
		strings.Contains(simplePath, "/api/v1/finclip-app-manager/type-config") {
		simplePath = "/api/v1/finclip-app-manager/type-config"
	} else if strings.Contains(simplePath, "/api/v1/mop/finstore/dev/typeConfig") ||
		strings.Contains(simplePath, "/api/v1/mop/finstore/dev/type-config") {
		simplePath = "/api/v1/mop/finstore/dev/type-config"
	} else if strings.Contains(simplePath, "/api/v1/mop/finstore/admin/typeConfig") ||
		strings.Contains(simplePath, "/api/v1/mop/finstore/admin/type-config") {
		simplePath = "/api/v1/mop/finstore/admin/type-config"
	} else if strings.Contains(simplePath, "/api/v1/mop/finstore/admin/typeConfig/:typeConfigId") ||
		strings.Contains(simplePath, "/api/v1/mop/finstore/admin/type_config/:typeConfigId") {
		simplePath = "/api/v1/mop/finstore/admin"
	}
	/*} else if strings.Contains(simplePath, "/api/v1/mop/finstore/dev/bindings/appIdInfoList") ||
		strings.Contains(simplePath, "/api/v1/mop/finstore/dev/bindings/appid-info-list") {
		simplePath = "/api/v1/mop/finstore/dev/bindings/appid-info-list"
	} else if strings.Contains(simplePath, "/api/v1/mop/finstore/dev/limit/bundleId") ||
		strings.Contains(simplePath, "/api/v1/mop/finstore/dev/limit/bundle-id") {
		simplePath = "/api/v1/mop/finstore/dev/limit/bundle-id"

	} else if strings.Contains(simplePath, "/api/v1/mop/finstore/openapi/bindingInfo") ||
		strings.Contains(simplePath, "/api/v1/mop/finstore/open-api/binding-info") {
		simplePath = "/api/v1/mop/finstore/open-api/bindingInfo"
	} */
	return simplePath
}