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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,126 @@ | ||
| package update | ||
|
|
||
| import ( | ||
| "context" | ||
| "encoding/json" | ||
| "errors" | ||
| "io" | ||
| "net/http" | ||
| "os" | ||
| "path/filepath" | ||
| "time" | ||
|
|
||
| "github.com/kardianos/osext" | ||
| ) | ||
|
|
||
| type ( | ||
| // ReleaseInfo represents github latest release info | ||
| ReleaseInfo struct { | ||
| TagName string `json:"tag_name"` | ||
| Name string `json:"name"` | ||
| Body string `json:"body"` | ||
| Draft bool `json:"draft"` | ||
| Prerelease bool `json:"prerelease"` | ||
| CreatedAt time.Time `json:"created_at"` | ||
| PublishedAt time.Time `json:"published_at"` | ||
| Assets []Asset `json:"assets"` | ||
| } | ||
| Asset struct { | ||
| Name string `json:"name"` | ||
| Size int `json:"size"` | ||
| DownloadCount int `json:"download_count"` | ||
| BrowserDownloadURL string `json:"browser_download_url"` | ||
| } | ||
| ) | ||
|
|
||
| func (r *ReleaseInfo) getDownloadURL(name string) string { | ||
| for _, a := range r.Assets { | ||
| if a.Name == name { | ||
| return a.BrowserDownloadURL | ||
| } | ||
| } | ||
| return "" | ||
| } | ||
|
|
||
| // fetchReleaseInfo return githublatest release info | ||
| func fetchReleaseInfo(ctx context.Context) (*ReleaseInfo, error) { | ||
| url := "https://api.github.com/repos/thedevsaddam/docgen/releases/latest" | ||
| ctx, cancel := context.WithTimeout(ctx, 3*time.Second) | ||
| defer cancel() | ||
| req, err := http.NewRequestWithContext(ctx, http.MethodGet, url, nil) | ||
| if err != nil { | ||
| return nil, err | ||
| } | ||
| resp, err := http.DefaultClient.Do(req) | ||
| if err != nil { | ||
| return nil, err | ||
| } | ||
| defer resp.Body.Close() | ||
|
|
||
| if resp.StatusCode != http.StatusOK { | ||
| return nil, errors.New("update: failed to fetch latest release") | ||
| } | ||
|
|
||
| rf := ReleaseInfo{} | ||
| if err := json.NewDecoder(resp.Body).Decode(&rf); err != nil { | ||
| return nil, err | ||
| } | ||
| return &rf, nil | ||
| } | ||
|
|
||
| // updateBinary download the binary in current binary and replace the old one | ||
| func updateBinary(ctx context.Context, url string) error { | ||
| if url == "" { | ||
| return errors.New("update: empty download url") | ||
| } | ||
| ctx, cancel := context.WithTimeout(ctx, 5*time.Minute) | ||
| defer cancel() | ||
| req, err := http.NewRequestWithContext(ctx, http.MethodGet, url, nil) | ||
| if err != nil { | ||
| return err | ||
| } | ||
| resp, err := http.DefaultClient.Do(req) | ||
| if err != nil { | ||
| return err | ||
| } | ||
| defer resp.Body.Close() | ||
|
|
||
| if resp.StatusCode != http.StatusOK { | ||
| return errors.New("update: failed to fetch binary file") | ||
| } | ||
|
|
||
| dir, err := osext.ExecutableFolder() | ||
| if err != nil { | ||
| return err | ||
| } | ||
|
|
||
| fileName := filepath.Join(dir, filepath.Base(os.Args[0])) | ||
| tmpFile := fileName + ".tmp" | ||
|
|
||
| if err := os.Chmod(fileName, 0777); err != nil { | ||
| return err | ||
| } | ||
|
|
||
| if err := os.Rename(fileName, tmpFile); err != nil { | ||
| return err | ||
| } | ||
|
|
||
| f, err := os.Create(fileName) | ||
| if err != nil { | ||
| return err | ||
| } | ||
|
|
||
| if err := os.Chmod(fileName, 0777); err != nil { | ||
| return err | ||
| } | ||
|
|
||
| _, err = io.Copy(f, resp.Body) | ||
| if err != nil { | ||
| if err := os.Rename(tmpFile, fileName); err != nil { | ||
| return err | ||
| } | ||
| return err | ||
| } | ||
|
|
||
| return os.Remove(tmpFile) | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,76 @@ | ||
| package update | ||
|
|
||
| import ( | ||
| "context" | ||
| "errors" | ||
| "fmt" | ||
| "runtime" | ||
| "time" | ||
|
|
||
| "github.com/Masterminds/semver" | ||
| "github.com/briandowns/spinner" | ||
| ) | ||
|
|
||
| const ( | ||
| layoutISO = "2006-01-02" | ||
| updateInDays = 7 | ||
| ) | ||
|
|
||
| // SelfUpdate update the application to its latest version | ||
| // if the current release is 3days old and has a new update | ||
| func SelfUpdate(ctx context.Context, buildDate, version string) error { | ||
| if buildDate == "unknown" { | ||
| return errors.New("update: unable to update based on unkown build date/version") | ||
| } | ||
| currBinaryReleaseDate, err := time.Parse(layoutISO, buildDate) | ||
| if err != nil { | ||
| return fmt.Errorf("update: %v", err) | ||
| } | ||
| if (time.Since(currBinaryReleaseDate).Hours() / 24) <= updateInDays { | ||
| return nil | ||
| } | ||
|
|
||
| releaseInfo, err := fetchReleaseInfo(ctx) | ||
| if err != nil { | ||
| return fmt.Errorf("update: %v", err) | ||
| } | ||
|
|
||
| if releaseInfo.Draft || releaseInfo.Prerelease { | ||
| return nil | ||
| } | ||
|
|
||
| c, err := semver.NewConstraint(">" + version) | ||
| if err != nil { | ||
| return fmt.Errorf("update: %v", err) | ||
| } | ||
|
|
||
| v, err := semver.NewVersion(releaseInfo.TagName) | ||
| if err != nil { | ||
| return fmt.Errorf("update: %v", err) | ||
| } | ||
| // Check if the version meets the constraints. The a variable will be true. | ||
| if !c.Check(v) { | ||
| return nil | ||
| } | ||
|
|
||
| os := runtime.GOOS | ||
| arch := runtime.GOARCH | ||
| fmt.Println("Found newer version:", releaseInfo.TagName) | ||
|
|
||
| s := spinner.New(spinner.CharSets[70], 100*time.Millisecond, spinner.WithHiddenCursor(true)) // code:39 is earth for the lib | ||
| s.Prefix = fmt.Sprintf("Updating from %s to %s ( ", version, releaseInfo.Name) | ||
| s.Suffix = ")" | ||
| s.Start() | ||
| name := fmt.Sprintf("%s_%s", os, arch) | ||
| if os == "windows" { | ||
| name = name + ".exe" | ||
| } | ||
| err = updateBinary(ctx, releaseInfo.getDownloadURL(name)) | ||
| s.Stop() | ||
| fmt.Println() | ||
| fmt.Println("Update includes:") | ||
| fmt.Print(releaseInfo.Body) | ||
| fmt.Println() | ||
|
|
||
| return err | ||
| } |