package main

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

type User struct {
	ID   int    `json:"id"`
	Name string `json:"name"`
}

var users = []User{
	{1, "Alice"},
	{2, "Bob"},
	{3, "Charlie"},
}

func main() {
	http.HandleFunc("/healthz", func(w http.ResponseWriter, r *http.Request) {
		w.WriteHeader(200)
	})

	http.HandleFunc("/users", func(w http.ResponseWriter, r *http.Request) {
		w.Header().Set("Content-Type", "application/json")
		json.NewEncoder(w).Encode(users)
	})

	port := os.Getenv("PORT")
	if port == "" {
		port = "8080"
	}
	log.Printf("users-api listening on :%s", port)
	log.Fatal(http.ListenAndServe(":"+port, nil))
}