cli/command/checkForUpdate.go
Corey Johnson 5a3a2cf95e Go routine it
Co-Authored-By: Josh Abernathy <joshaber@gmail.com>
2019-11-20 15:58:23 -08:00

59 lines
1.1 KiB
Go

package command
import (
"encoding/json"
"fmt"
"io/ioutil"
"net/http"
"os"
"github.com/github/gh-cli/utils"
"github.com/mattn/go-isatty"
)
const nwo = "github/homebrew-gh"
func CheckForUpdate(handleUpdate chan func()) {
if !isatty.IsTerminal(os.Stdout.Fd()) {
handleUpdate <- nil
}
latestVersion, err := getLastestVersion()
if err != nil {
handleUpdate <- nil
}
updateAvailable := latestVersion != Version
if updateAvailable {
handleUpdate <- func() {
fmt.Printf(utils.Cyan(`
A new version of gh is available! %s → %s
Changelog: https://github.com/%s/releases/tag/%[2]s
Run 'brew upgrade github/gh/gh' to update!`)+"\n\n", Version, latestVersion, nwo)
}
} else {
handleUpdate <- nil
}
}
func getLastestVersion() (string, error) {
url := fmt.Sprintf("https://api.github.com/repos/%s/releases/latest", nwo)
resp, err := http.Get(url)
if err != nil {
return "", err
}
defer resp.Body.Close()
data, err := ioutil.ReadAll(resp.Body)
if err != nil {
return "", err
}
var j struct {
LatestVersion string `json:"tag_name"`
}
json.Unmarshal(data, &j)
return j.LatestVersion, nil
}