feat: signed releases, release feed, notification (read-only)

internal/domain/update/updateDomain.go

@@ -0,0 +1,105 @@
+package update
+
+import (
+	"errors"
+	"time"
+)
+
+const StateIdle = "idle"
+
+var (
+	ErrNoRelease       = errors.New("no release found")
+	ErrInvalidVersion  = errors.New("invalid version")
+	ErrFeedUnavailable = errors.New("release feed unavailable")
+)
+
+type ReleaseNotes struct {
+	Version    string    `json:"version"`
+	ReleasedAt time.Time `json:"released_at"`
+	Items      []string  `json:"items"`
+}
+
+type Release struct {
+	Tag         string
+	URL         string
+	PublishedAt time.Time
+	Notes       ReleaseNotes
+}
+
+type CheckResult struct {
+	Latest     string       `json:"latest"`
+	ReleaseURL string       `json:"release_url"`
+	Notes      ReleaseNotes `json:"notes"`
+	CheckedAt  time.Time    `json:"checked_at"`
+}
+
+type Progress struct {
+	Percent         int   `json:"percent"`
+	DownloadedBytes int64 `json:"downloaded_bytes"`
+	TotalBytes      int64 `json:"total_bytes"`
+}
+
+type UpdateStatus struct {
+	Current    string        `json:"current"`
+	Latest     string        `json:"latest"`
+	Available  bool          `json:"available"`
+	ReleaseURL *string       `json:"release_url"`
+	Notes      *ReleaseNotes `json:"notes"`
+	CheckedAt  *time.Time    `json:"checked_at"`
+	CanApply   bool          `json:"can_apply"`
+	State      string        `json:"state"`
+	Progress   *Progress     `json:"progress"`
+	Error      *string       `json:"error"`
+	StartedAt  *time.Time    `json:"started_at"`
+}
+
+func NewResult(release Release, checkedAt time.Time) CheckResult {
+	return CheckResult{
+		Latest:     release.Tag,
+		ReleaseURL: release.URL,
+		Notes:      release.Notes,
+		CheckedAt:  checkedAt.UTC(),
+	}
+}
+
+func NewStatus(current string, result *CheckResult) UpdateStatus {
+	status := UpdateStatus{Current: current, State: StateIdle}
+	if result == nil {
+		return status
+	}
+	releaseURL := result.ReleaseURL
+	notes := result.Notes
+	notes.Items = nonNilItems(notes.Items)
+	checkedAt := result.CheckedAt
+	status.Latest = result.Latest
+	status.Available = IsNewer(current, result.Latest)
+	status.ReleaseURL = &releaseURL
+	status.Notes = &notes
+	status.CheckedAt = &checkedAt
+	return status
+}
+
+func nonNilItems(items []string) []string {
+	if items == nil {
+		return []string{}
+	}
+	return items
+}
+
+func Newest(releases []Release) (Release, error) {
+	var newest Release
+	found := false
+	for _, release := range releases {
+		if _, err := ParseVersion(release.Tag); err != nil {
+			continue
+		}
+		if !found || IsNewer(newest.Tag, release.Tag) {
+			newest = release
+			found = true
+		}
+	}
+	if !found {
+		return Release{}, ErrNoRelease
+	}
+	return newest, nil
+}