Allow updating to draft and pre-release

New fields are added to update to draft and pre-release versions.
Fixes rhysd#14

selfupdate/detect.go

@@ -12,19 +12,24 @@ import (
 
 var reVersion = regexp.MustCompile(`\d+\.\d+\.\d+`)
 
+type options struct {
+	draft bool
+	pre   bool
+}
+
 func findAssetFromRelease(rel *github.RepositoryRelease,
-	suffixes []string, targetVersion string, filters []*regexp.Regexp) (*github.ReleaseAsset, semver.Version, bool) {
+	suffixes []string, targetVersion string, filters []*regexp.Regexp, opt options) (*github.ReleaseAsset, semver.Version, bool) {
 
 	if targetVersion != "" && targetVersion != rel.GetTagName() {
 		log.Println("Skip", rel.GetTagName(), "not matching to specified version", targetVersion)
 		return nil, semver.Version{}, false
 	}
 
-	if targetVersion == "" && rel.GetDraft() {
+	if targetVersion == "" && rel.GetDraft() && !opt.draft {
 		log.Println("Skip draft version", rel.GetTagName())
 		return nil, semver.Version{}, false
 	}
-	if targetVersion == "" && rel.GetPrerelease() {
+	if targetVersion == "" && rel.GetPrerelease() && !opt.pre {
 		log.Println("Skip pre-release version", rel.GetTagName())
 		return nil, semver.Version{}, false
 	}
@@ -89,7 +94,7 @@ func findValidationAsset(rel *github.RepositoryRelease, validationName string) (
 
 func findReleaseAndAsset(rels []*github.RepositoryRelease,
 	targetVersion string,
-	filters []*regexp.Regexp) (*github.RepositoryRelease, *github.ReleaseAsset, semver.Version, bool) {
+	filters []*regexp.Regexp, opt options) (*github.RepositoryRelease, *github.ReleaseAsset, semver.Version, bool) {
 	// Generate candidates
 	suffixes := make([]string, 0, 2*7*2)
 	for _, sep := range []rune{'_', '-'} {
@@ -111,7 +116,7 @@ func findReleaseAndAsset(rels []*github.RepositoryRelease,
 	// Returned list from GitHub API is in the order of the date when created.
 	//   ref: https://github.com/rhysd/go-github-selfupdate/issues/11
 	for _, rel := range rels {
-		if a, v, ok := findAssetFromRelease(rel, suffixes, targetVersion, filters); ok {
+		if a, v, ok := findAssetFromRelease(rel, suffixes, targetVersion, filters, opt); ok {
 			// Note: any version with suffix is less than any version without suffix.
 			// e.g. 0.0.1 > 0.0.1-beta
 			if release == nil || v.GTE(ver) {
@@ -159,7 +164,8 @@ func (up *Updater) DetectVersion(slug string, version string) (release *Release,
 		return nil, false, err
 	}
 
-	rel, asset, ver, found := findReleaseAndAsset(rels, version, up.filters)
+	opt := options{pre: up.pre, draft: up.draft}
+	rel, asset, ver, found := findReleaseAndAsset(rels, version, up.filters, opt)
 	if !found {
 		return nil, false, nil
 	}
@@ -170,6 +176,8 @@ func (up *Updater) DetectVersion(slug string, version string) (release *Release,
 	publishedAt := rel.GetPublishedAt().Time
 	release = &Release{
 		ver,
+		rel.GetPrerelease(),
+		rel.GetDraft(),
 		url,
 		asset.GetSize(),
 		asset.GetID(),

selfupdate/detect_test.go

@@ -434,7 +434,7 @@ func TestFindReleaseAndAsset(t *testing.T) {
 			expectedFound: false,
 		},
 	} {
-		asset, ver, found := findAssetFromRelease(fixture.rels, []string{".gz"}, fixture.targetVersion, fixture.filters)
+		asset, ver, found := findAssetFromRelease(fixture.rels, []string{".gz"}, fixture.targetVersion, fixture.filters, options{})
 		if fixture.expectedFound {
 			if !found {
 				t.Errorf("expected to find an asset for this fixture: %q", fixture.name)

selfupdate/release.go

@@ -10,6 +10,10 @@ import (
 type Release struct {
 	// Version is the version of the release
 	Version semver.Version
+	// PreRelease is the pre-release flag of the release
+	PreRelease bool
+	// Draft is the draft flag of the release
+	Draft bool
 	// AssetURL is a URL to the uploaded file for the release
 	AssetURL string
 	// AssetSize represents the size of asset in bytes

selfupdate/updater.go

@@ -19,6 +19,8 @@ type Updater struct {
 	apiCtx    context.Context
 	validator Validator
 	filters   []*regexp.Regexp
+	pre       bool
+	draft     bool
 }
 
 // Config represents the configuration of self-update.
@@ -37,6 +39,10 @@ type Config struct {
 	// An asset is selected if it matches any of those, in addition to the regular tag, os, arch, extensions.
 	// Please make sure that your filter(s) uniquely match an asset.
 	Filters []string
+	// PreRelease indicates if pre-releases are allowed.
+	PreRelease bool
+	// Draft indicates if drafts are allowed.
+	Draft bool
 }
 
 func newHTTPClient(ctx context.Context, token string) *http.Client {
@@ -71,7 +77,7 @@ func NewUpdater(config Config) (*Updater, error) {
 
 	if config.EnterpriseBaseURL == "" {
 		client := github.NewClient(hc)
-		return &Updater{api: client, apiCtx: ctx, validator: config.Validator, filters: filtersRe}, nil
+		return &Updater{api: client, apiCtx: ctx, validator: config.Validator, filters: filtersRe, pre: config.PreRelease, draft: config.Draft}, nil
 	}
 
 	u := config.EnterpriseUploadURL
@@ -82,7 +88,7 @@ func NewUpdater(config Config) (*Updater, error) {
 	if err != nil {
 		return nil, err
 	}
-	return &Updater{api: client, apiCtx: ctx, validator: config.Validator, filters: filtersRe}, nil
+	return &Updater{api: client, apiCtx: ctx, validator: config.Validator, filters: filtersRe, pre: config.PreRelease, draft: config.Draft}, nil
 }
 
 // DefaultUpdater creates a new updater instance with default configuration.