go-dependency-inject1

dep-inject.go

package main

import (
	"flag"
	"fmt"
	"io/ioutil"
	"net/http"
)

var (
	url string
)

func init() {
	flag.StringVar(&url, "url", "http://google.com", "Which url to use")
	flag.Parse()
}

type HttpClient interface {
	Get(string) (*http.Response, error)
	Post(string, string, io.Reader) (*http.Response, error)
}

func send(client HttpClient, link string) error {
	response, err := client.Get(link)

	if err != nil {
		return err
	}

	if response == nil {
		return err
	}

	body, err := ioutil.ReadAll(response.Body)

	if err != nil {
		return err
	}

	fmt.Println(string(body))
	return nil

}

func main() {

	client := &http.Client{}
	err := send(client, url)

	if err != nil {
		panic(err)
	}
}