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Fetch Lib Test

package main

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

type Fetcher interface {
	GetName() string
	Fetch() (*[]byte, error)
}

type File struct {
	Name    string
	Url     string
	Version string
	Ext     string
	Min     bool
}

func (f *File) GetName() string {
	if f.Min {
		return f.Name + ".min" + f.Ext
	}
	return f.Name + f.Ext
}

func (f *File) Fetch() (*[]byte, error) {
	if f.Min {
		resp, err := http.Get(f.Url + f.Version + "/" + f.Name + ".min" + f.Ext)
		if err != nil {
			return nil, err
		}
		data, err := ioutil.ReadAll(resp.Body)
		if err != nil {
			panic(err)
		}
		return &data, nil
	}
	resp, err := http.Get(f.Url + f.Version + "/" + f.Name + f.Ext)
	if err != nil {
		return nil, err
	}
	data, err := ioutil.ReadAll(resp.Body)
	if err != nil {
		panic(err)
	}
	return &data, nil

}

func main() {
	angular := &File{
		Name:    "angular",
		Url:     "https://ajax.googleapis.com/ajax/libs/angularjs/",
		Version: "1.3.1",
		Ext:     ".js",
		Min:     true,
	}
	animate := &File{
		Name:    "animate",
		Url:     "https://raw.github.com/daneden/animate.css/master/",
		Version: "",
		Ext:     ".css",
		Min:     false,
	}
	CreateLib(angular, animate)
}

func CreateLib(ft ...Fetcher) {
	fileChan := make(chan []byte)
	for _, fetch := range ft {
		go func() {
			data, err := fetch.Fetch()
			if err != nil {
				panic(err)
			}
			fileChan <- *data
		}()
		ioutil.WriteFile(fetch.GetName(), <-fileChan, 0777)
	}
}