package main

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

	"github.com/remeh/sizedwaitgroup"
)

func main() {
	fmt.Println("Input # of times to run")
	var number int
	fmt.Scan(&number)
	fmt.Println("Input # of threads")
	var threads int
	fmt.Scan(&threads)
	swg := sizedwaitgroup.New(threads)

	for i := 0; i < number; i++ {
		swg.Add()
		go func(i int) {
			defer swg.Done()
			var data Autogenerated
			resp, err := http.Get("http://api.open-notify.org/iss-now.json")
			if err := json.NewDecoder(resp.Body).Decode(&data); err != nil { // Parse []byte to go struct pointer
				fmt.Println("Can not unmarshal JSON")
			}
			if err != nil {
				fmt.Println(err)
			}
			resp.Body.Close()
			fmt.Println("\n Longitude: ", data.IssPosition.Longitude, " Latitude:", data.IssPosition.Latitude, "Request # ", i)

		}(i)
	}
	swg.Wait()

}

type Autogenerated struct {
	Message     string `json:"message"`
	IssPosition struct {
		Longitude string `json:"longitude"`
		Latitude  string `json:"latitude"`
	} `json:"iss_position"`
	Timestamp int `json:"timestamp"`
}