Complete rewrite and re-architecture Osmedeus Engine in v5

internal/updater/github_source.go

@@ -0,0 +1,84 @@
+package updater
+
+import (
+	"context"
+	"fmt"
+
+	selfupdate "github.com/creativeprojects/go-selfupdate"
+)
+
+// GitHubSource implements Source using go-selfupdate's GitHub backend
+type GitHubSource struct {
+	updater         *selfupdate.Updater
+	allowPrerelease bool
+}
+
+// NewGitHubSource creates a new GitHub release source
+func NewGitHubSource(allowPrerelease bool) (*GitHubSource, error) {
+	source, err := selfupdate.NewGitHubSource(selfupdate.GitHubConfig{})
+	if err != nil {
+		return nil, fmt.Errorf("failed to create GitHub source: %w", err)
+	}
+
+	updater, err := selfupdate.NewUpdater(selfupdate.Config{
+		Source:     source,
+		Prerelease: allowPrerelease,
+	})
+	if err != nil {
+		return nil, fmt.Errorf("failed to create updater: %w", err)
+	}
+
+	return &GitHubSource{
+		updater:         updater,
+		allowPrerelease: allowPrerelease,
+	}, nil
+}
+
+func (g *GitHubSource) DetectLatest(ctx context.Context, owner, repo string) (*Release, error) {
+	repository := selfupdate.NewRepositorySlug(owner, repo)
+	rel, found, err := g.updater.DetectLatest(ctx, repository)
+	if err != nil {
+		return nil, fmt.Errorf("failed to detect latest release: %w", err)
+	}
+	if !found {
+		return nil, nil
+	}
+	return convertSelfupdateRelease(rel), nil
+}
+
+func (g *GitHubSource) DetectVersion(ctx context.Context, owner, repo, version string) (*Release, error) {
+	repository := selfupdate.NewRepositorySlug(owner, repo)
+	rel, found, err := g.updater.DetectVersion(ctx, repository, version)
+	if err != nil {
+		return nil, fmt.Errorf("failed to detect version %s: %w", version, err)
+	}
+	if !found {
+		return nil, nil
+	}
+	return convertSelfupdateRelease(rel), nil
+}
+
+func (g *GitHubSource) UpdateTo(ctx context.Context, owner, repo string, release *Release) error {
+	// Get the executable path
+	exe, err := GetExecutablePath()
+	if err != nil {
+		return err
+	}
+
+	// Detect the release again to get the full selfupdate.Release object
+	repository := selfupdate.NewRepositorySlug(owner, repo)
+	rel, found, err := g.updater.DetectVersion(ctx, repository, release.Version)
+	if err != nil {
+		return fmt.Errorf("failed to detect release for update: %w", err)
+	}
+	if !found {
+		return fmt.Errorf("release %s not found", release.Version)
+	}
+
+	// Perform the update
+	if err := g.updater.UpdateTo(ctx, rel, exe); err != nil {
+		return fmt.Errorf("failed to update: %w", err)
+	}
+
+	return nil
+}