feat: handle obsolete versions

menu/js.go

@@ -18,6 +18,7 @@ const (
 	stateLatest          = "LATEST"
 	stateExperimental    = "EXPERIMENTAL"
 	statePreFinalRelease = "PRE_FINAL_RELEASE"
+	stateObsolete        = "OBSOLETE"
 )
 
 type optionVersion struct {
@@ -87,14 +88,15 @@ func buildVersions(currentVersion string, branches []string, latestTagName, expe
 		return nil, fmt.Errorf("failed to parse latest tag version %s: %w", latestTagName, err)
 	}
 
+	rawVersions, heads := parseBranches(branches)
+
 	var versions []optionVersion
-	for _, branch := range branches {
-		versionName := strings.Replace(branch, baseRemote, "", 1)
+	for _, versionName := range rawVersions {
 		selected := currentVersion == versionName
 
 		switch versionName {
 		case latestTagName:
-			// skip, because we must the branch instead of the tag
+			// skip, because we must use the branch instead of the tag
 		case experimentalBranchName:
 			versions = append(versions, optionVersion{
 				Path:     experimentalBranchName,
@@ -103,6 +105,7 @@ func buildVersions(currentVersion string, branches []string, latestTagName, expe
 				State:    stateExperimental,
 				Selected: selected,
 			})
+
 		default:
 			simpleVersion, err := version.NewVersion(versionName)
 			if err != nil {
@@ -126,17 +129,55 @@ func buildVersions(currentVersion string, branches []string, latestTagName, expe
 			default:
 				v.Path = versionName
 				v.Text = versionName
+				if !isHeads(heads, simpleVersion) {
+					v.State = stateObsolete
+				}
 			}
+
 			versions = append(versions, v)
 		}
 	}
 
 	return versions, nil
 }
 
+func parseBranches(branches []string) ([]string, map[int]*version.Version) {
+	heads := map[int]*version.Version{}
+
+	var rawVersions []string
+	for _, branch := range branches {
+		versionName := strings.Replace(branch, baseRemote, "", 1)
+		rawVersions = append(rawVersions, versionName)
+
+		v, err := version.NewVersion(versionName)
+		if err != nil {
+			continue
+		}
+
+		if p, ok := heads[v.Segments()[0]]; ok {
+			if v.GreaterThan(p) {
+				heads[v.Segments()[0]] = v
+			}
+		} else {
+			heads[v.Segments()[0]] = v
+		}
+	}
+	return rawVersions, heads
+}
+
 func sameMinor(v1, v2 *version.Version) bool {
 	v1Parts := v1.Segments()
 	v2Parts := v2.Segments()
 
 	return v1Parts[0] == v2Parts[0] && v1Parts[1] == v2Parts[1]
 }
+
+func isHeads(heads map[int]*version.Version, v *version.Version) bool {
+	for _, head := range heads {
+		if v.Equal(head) {
+			return true
+		}
+	}
+
+	return false
+}

menu/js_test.go

@@ -212,10 +212,26 @@ func Test_buildVersions(t *testing.T) {
 					Path:     "v1.3",
 					Text:     "v1.3",
 					Name:     "v1.3",
+					State:    stateObsolete,
 					Selected: false,
 				},
 			},
 		},
+		{
+			desc:                   "all v2",
+			branches:               []string{"origin/v2.9", "origin/v2.8", "origin/master", "origin/v1.7", "v1.4.6", "origin/v1.4"},
+			latestTagName:          "v2.9.0",
+			experimentalBranchName: "master",
+			currentVersion:         "v1.4",
+			expected: []optionVersion{
+				{Path: "", Text: "v2.9 Latest", Name: "v2.9", State: "LATEST", Selected: false},
+				{Path: "v2.8", Text: "v2.8", Name: "v2.8", State: stateObsolete, Selected: false},
+				{Path: "master", Text: "Experimental", Name: "master", State: "EXPERIMENTAL", Selected: false},
+				{Path: "v1.7", Text: "v1.7", Name: "v1.7", State: "", Selected: false},
+				{Path: "v1.4.6", Text: "v1.4.6", Name: "v1.4.6", State: stateObsolete, Selected: false},
+				{Path: "v1.4", Text: "v1.4", Name: "v1.4", State: stateObsolete, Selected: true},
+			},
+		},
 	}
 
 	for _, test := range testCases {

traefik-menu.js.gotmpl

@@ -8,6 +8,18 @@ var versions = [
   {{- end}}
 ];
 
+{{- range $version := .Versions }}
+{{ if and (eq $version.Name $.Current) (eq $version.State "OBSOLETE") }}
+function addBannerMaterial() {
+  // TODO
+}
+
+function addBannerUnited() {
+  // TODO
+}
+{{- end}}
+{{- end}}
+
 // Material theme
 
 function addMaterialMenu(elt, versions) {
@@ -119,7 +131,9 @@ const materialSelector = 'div.md-container main.md-main div.md-main__inner.md-gr
 let elt = document.querySelector(materialSelector);
 if (elt) {
     addMaterialMenu(elt, versions);
+    addBannerMaterial();
 } else {
     const elt = document.querySelector(unitedSelector);
     addMenu(elt, versions);
+    addBannerUnited();
 }