Cleanup data types

arn/MediaTitle.go

@@ -0,0 +1,43 @@
+package arn
+
+// MediaTitle represents a title for any kind of media.
+type MediaTitle struct {
+	Canonical string   `json:"canonical" editable:"true"`
+	Romaji    string   `json:"romaji" editable:"true"`
+	English   string   `json:"english" editable:"true"`
+	Japanese  string   `json:"japanese" editable:"true"`
+	Hiragana  string   `json:"hiragana" editable:"true"`
+	Synonyms  []string `json:"synonyms" editable:"true"`
+}
+
+// ByUser returns the preferred title for the given user.
+func (title *MediaTitle) ByUser(user *User) string {
+	if user == nil {
+		return title.Canonical
+	}
+
+	switch user.Settings().TitleLanguage {
+	case "canonical":
+		return title.Canonical
+	case "romaji":
+		if title.Romaji == "" {
+			return title.Canonical
+		}
+
+		return title.Romaji
+	case "english":
+		if title.English == "" {
+			return title.Canonical
+		}
+
+		return title.English
+	case "japanese":
+		if title.Japanese == "" {
+			return title.Canonical
+		}
+
+		return title.Japanese
+	default:
+		panic("Invalid title language")
+	}
+}