Prune stale plugin metadata

platform/domain/plugin_versions.go

@@ -0,0 +1,101 @@
+package domain
+
+import "strings"
+
+// GamePluginIdentityKey collapses generated manifest IDs for the same first-party
+// plugin so platform storage keeps one current registry record per plugin.
+func GamePluginIdentityKey(plugin GamePlugin) string {
+	baseID := CanonicalGamePluginID(plugin.ID)
+	return "id:" + baseID
+}
+
+func CanonicalGamePluginID(id string) string {
+	id = strings.ToLower(strings.TrimSpace(id))
+	if marker := strings.Index(id, ".codex."); marker > 0 {
+		return id[:marker]
+	}
+	return id
+}
+
+func GamePluginIsNewer(candidate GamePlugin, current GamePlugin) bool {
+	if comparison := CompareGamePluginVersions(candidate.Version, current.Version); comparison != 0 {
+		return comparison > 0
+	}
+	if score := gamePluginPreferenceScore(candidate) - gamePluginPreferenceScore(current); score != 0 {
+		return score > 0
+	}
+	return strings.Compare(strings.ToLower(strings.TrimSpace(candidate.ID)), strings.ToLower(strings.TrimSpace(current.ID))) < 0
+}
+
+func CompareGamePluginVersions(left string, right string) int {
+	leftParts := gamePluginVersionParts(left)
+	rightParts := gamePluginVersionParts(right)
+	limit := len(leftParts)
+	if len(rightParts) > limit {
+		limit = len(rightParts)
+	}
+	for index := 0; index < limit; index++ {
+		var leftValue, rightValue int
+		if index < len(leftParts) {
+			leftValue = leftParts[index]
+		}
+		if index < len(rightParts) {
+			rightValue = rightParts[index]
+		}
+		if leftValue != rightValue {
+			if leftValue > rightValue {
+				return 1
+			}
+			return -1
+		}
+	}
+	leftText := strings.ToLower(strings.TrimSpace(left))
+	rightText := strings.ToLower(strings.TrimSpace(right))
+	if leftText == rightText {
+		return 0
+	}
+	if leftText == "" {
+		return -1
+	}
+	if rightText == "" {
+		return 1
+	}
+	if strings.Contains(leftText, "-") != strings.Contains(rightText, "-") {
+		if strings.Contains(leftText, "-") {
+			return -1
+		}
+		return 1
+	}
+	if leftText > rightText {
+		return 1
+	}
+	return -1
+}
+
+func gamePluginVersionParts(version string) []int {
+	fields := strings.FieldsFunc(version, func(r rune) bool { return r < '0' || r > '9' })
+	parts := make([]int, 0, len(fields))
+	for _, field := range fields {
+		value := 0
+		for _, r := range field {
+			value = value*10 + int(r-'0')
+		}
+		parts = append(parts, value)
+	}
+	return parts
+}
+
+func gamePluginPreferenceScore(plugin GamePlugin) int {
+	score := 0
+	id := strings.ToLower(strings.TrimSpace(plugin.ID))
+	if id == CanonicalGamePluginID(id) {
+		score += 4
+	}
+	if strings.HasPrefix(strings.ToLower(strings.TrimSpace(plugin.ManifestRef)), "artifact://") {
+		score += 2
+	}
+	if plugin.Status == GamePluginStatusInstalled {
+		score++
+	}
+	return score
+}