package main

import (
	"encoding/json"
	"fmt"
	"net/http"
	"time"
)

type TimeHandler struct{
	StartTime time.Time
	Duration  time.Duration
}

type timeObject struct {
	Started int64 `json:"st"`
	Time int64 `json:"cu"`
	Duration int `json:"du"`
}

func (t TimeHandler) ServeHTTP(w http.ResponseWriter, r *http.Request) {
	w.Header().Set("Content-Type", "application/json")

	if j, err := json.Marshal(timeObject{t.StartTime.Unix(), time.Now().Unix(), int(t.Duration.Seconds())}); err != nil {
		http.Error(w, fmt.Sprintf("{\"errmsg\":\"%q\"}", err), http.StatusInternalServerError)
	} else {
		w.WriteHeader(http.StatusOK)
		w.Write(j)
	}
}