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path: root/src/http.go
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package main

import (
	"fmt"
	"net/http"

	"github.com/gorilla/mux"
)

// setupHTTPServer defines a new http server
func setupHTTPServer() http.Server {
	r := mux.NewRouter()

	r.HandleFunc("/", indexHandler)
	r.HandleFunc("/metrics", metricsHandler)

	return http.Server{
		Addr:    fmt.Sprintf("0.0.0.0:%d", *port),
		Handler: r,
	}
}

// indexHandler handles the "/" endpoint
func indexHandler(w http.ResponseWriter, r *http.Request) {
	fmt.Fprintf(w, "%s", "You can find the metrics by accessing the /metrics endpoint!\n")
}

// metricsHandler handles the "/metrics" endpoint
func metricsHandler(w http.ResponseWriter, r *http.Request) {
	if userScore == nil {
		userScore = make(map[string]int)
	}

	fmt.Fprintf(w, "%s\n", "scoreboard_up 1")
	fmt.Fprintf(w, "%s\n", "version 1")

	for _, user := range users {
		if user != "" {
			fmt.Fprintf(w, "score{name=\"%s\"} %d\n", user, userScore[user])
		}
	}
}