package main

import (
	"encoding/json"
	"log"
	"net/http"
	"os"
)

var version = os.Getenv("APP_VERSION")

type status struct {
	Status  string `json:"status"`
	Version string `json:"version"`
}

func main() {
	if version == "" {
		version = "dev"
	}

	http.HandleFunc("/", func(w http.ResponseWriter, r *http.Request) {
		w.Header().Set("Content-Type", "application/json")
		_ = json.NewEncoder(w).Encode(status{Status: "ok", Version: version})
	})

	http.HandleFunc("/healthz", func(w http.ResponseWriter, r *http.Request) {
		w.WriteHeader(http.StatusOK)
		_, _ = w.Write([]byte("ok"))
	})

	addr := ":8080"
	log.Printf("listening on %s, version=%s", addr, version)
	log.Fatal(http.ListenAndServe(addr, nil))
}