add more information to Release struct

- asset's size
- release name
- release time

selfupdate/detect.go

@@ -112,10 +112,14 @@ func (d *ReleaseDetector) DetectLatest(slug string) (release *Release, found boo
 		tag = tag[indices[0]:]
 	}
 
+	publishedAt := rel.GetPublishedAt().Time
 	release = &Release{
-		AssetURL:     url,
-		URL:          rel.GetHTMLURL(),
-		ReleaseNotes: rel.GetBody(),
+		AssetURL:      url,
+		AssetByteSize: asset.GetSize(),
+		URL:           rel.GetHTMLURL(),
+		ReleaseNotes:  rel.GetBody(),
+		Name:          rel.GetName(),
+		PublishedAt:   &publishedAt,
 	}
 
 	release.Version, err = semver.Make(tag)

selfupdate/detect_test.go

@@ -39,6 +39,15 @@ func TestDetectReleaseWithVersionPrefix(t *testing.T) {
 	if r.ReleaseNotes == "" {
 		t.Error("Description should not be empty for this repo")
 	}
+	if r.Name == "" {
+		t.Error("Release name is unexpectedly empty")
+	}
+	if r.AssetByteSize == 0 {
+		t.Error("Asset's size is unexpectedly zero")
+	}
+	if r.PublishedAt.IsZero() {
+		t.Error("Release time is unexpectedly zero")
+	}
 }
 
 func TestDetectReleasesForVariousArchives(t *testing.T) {
@@ -46,6 +55,8 @@ func TestDetectReleasesForVariousArchives(t *testing.T) {
 		"rhysd-test/test-release-zip",
 		"rhysd-test/test-release-tar",
 		"rhysd-test/test-release-gzip",
+		"rhysd-test/test-release-xz",
+		"rhysd-test/test-release-tar-xz",
 	} {
 		t.Run(repo, func(t *testing.T) {
 			r, ok, err := DetectLatest(repo)
@@ -71,6 +82,15 @@ func TestDetectReleasesForVariousArchives(t *testing.T) {
 			if !strings.HasPrefix(r.AssetURL, fmt.Sprintf("https://github.com/%s/releases/download/v1.2.3/", repo)) {
 				t.Error("Unexpected asset URL:", r.AssetURL)
 			}
+			if r.Name == "" {
+				t.Error("Release name is unexpectedly empty")
+			}
+			if r.AssetByteSize == 0 {
+				t.Error("Asset's size is unexpectedly zero")
+			}
+			if r.PublishedAt.IsZero() {
+				t.Error("Release time is unexpectedly zero")
+			}
 		})
 	}
 }

selfupdate/release.go

@@ -2,6 +2,7 @@ package selfupdate
 
 import (
 	"github.com/blang/semver"
+	"time"
 )
 
 // Release represents a release asset for current OS and arch.
@@ -10,8 +11,14 @@ type Release struct {
 	Version semver.Version
 	// AssetURL is a URL to the uploaded file for the release
 	AssetURL string
+	// AssetSize represents the size of asset in bytes
+	AssetByteSize int
 	// URL is a URL to release page for browsing
 	URL string
 	// ReleaseNotes is a release notes of the release
 	ReleaseNotes string
+	// Name represents a name of the release
+	Name string
+	// PublishedAt is the time when the release was published
+	PublishedAt *time.Time
 }