package bins import ( "compress/bzip2" "encoding/json" "errors" "fmt" "io" "io/ioutil" "net/http" "os" "path" "runtime" "strings" "github.com/blang/semver/v4" "github.com/cupcakearmy/autorestic/internal" ) const INSTALL_PATH = "/usr/local/bin" type GithubReleaseAsset struct { Name string `json:"name"` Link string `json:"browser_download_url"` } type GithubRelease struct { Tag string `json:"tag_name"` Assets []GithubReleaseAsset `json:"assets"` } func dlJSON(url string) (GithubRelease, error) { var parsed GithubRelease resp, err := http.Get(url) if err != nil { return parsed, err } defer resp.Body.Close() body, err := ioutil.ReadAll(resp.Body) if err != nil { return parsed, err } json.Unmarshal(body, &parsed) return parsed, nil } func InstallRestic() error { installed := internal.CheckIfCommandIsCallable("restic") if installed { fmt.Println("restic already installed") return nil } else { body, err := dlJSON("https://api.github.com/repos/restic/restic/releases/latest") if err != nil { return err } ending := fmt.Sprintf("_%s_%s.bz2", runtime.GOOS, runtime.GOARCH) for _, asset := range body.Assets { if strings.HasSuffix(asset.Name, ending) { // Found fmt.Println(asset.Link) // Download archive resp, err := http.Get(asset.Link) if err != nil { return err } defer resp.Body.Close() // Uncompress bz := bzip2.NewReader(resp.Body) // Save binary file, err := os.Create(path.Join(INSTALL_PATH, "restic")) if err != nil { return err } file.Chmod(0755) defer file.Close() io.Copy(file, bz) fmt.Printf("Successfully installed restic under %s\n", INSTALL_PATH) return nil } } return errors.New("could not find right binary for your system, please install restic manually. https://bit.ly/2Y1Rzai") } } func upgradeRestic() error { out, err := internal.ExecuteCommand(internal.ExecuteOptions{ Command: "restic", }, "self-update") fmt.Println(out) return err } func Upgrade(restic bool) error { // Upgrade restic if restic { InstallRestic() upgradeRestic() } // Upgrade self current, err := semver.ParseTolerant(internal.VERSION) if err != nil { return err } fmt.Println(current) body, err := dlJSON("https://api.github.com/repos/cupcakearmy/autorestic/releases/latest") if err != nil { return err } latest, err := semver.ParseTolerant(body.Tag) if err != nil { return err } if current.GT(latest) { fmt.Println("Updated autorestic") } else { fmt.Println("Already up to date") } return nil }