Add custom theming

config.go

@@ -25,18 +25,44 @@ func (d *configDuration) UnmarshalText(text []byte) error {
 }
 
 type Config struct {
-	Theme           string         `toml:"theme"`
-	RefreshInterval configDuration `toml:"refresh_interval"`
-	Repository      string         `toml:"repository"`
-	ShowAll         bool           `toml:"show_all"`
-	Limit           int            `toml:"limit"`
-	Endpoint        string         `toml:"endpoint"`
-	Display         DisplayConfig  `toml:"display"`
-	Paths           PathConfig     `toml:"paths"`
-	Threads         ThreadConfig   `toml:"threads"`
-	Cache           CacheConfig    `toml:"cache"`
-	Editing         EditingConfig  `toml:"editing"`
-	KeyBindings     KeyBindings    `toml:"keybindings"`
+	Theme           string            `toml:"theme"`
+	RefreshInterval configDuration    `toml:"refresh_interval"`
+	Repository      string            `toml:"repository"`
+	ShowAll         bool              `toml:"show_all"`
+	Limit           int               `toml:"limit"`
+	Endpoint        string            `toml:"endpoint"`
+	Display         DisplayConfig     `toml:"display"`
+	Paths           PathConfig        `toml:"paths"`
+	Threads         ThreadConfig      `toml:"threads"`
+	Cache           CacheConfig       `toml:"cache"`
+	Editing         EditingConfig     `toml:"editing"`
+	CustomTheme     CustomThemeConfig `toml:"custom_theme"`
+	KeyBindings     KeyBindings       `toml:"keybindings"`
+}
+
+type CustomThemeConfig struct {
+	Base                       string   `toml:"base"`
+	Mode                       string   `toml:"mode"`
+	Title                      string   `toml:"title"`
+	Dim                        string   `toml:"dim"`
+	Text                       string   `toml:"text"`
+	ActiveForeground           string   `toml:"active_foreground"`
+	ActiveBackground           string   `toml:"active_background"`
+	Success                    string   `toml:"success"`
+	Warning                    string   `toml:"warning"`
+	Error                      string   `toml:"error"`
+	EditorForeground           string   `toml:"editor_foreground"`
+	EditorBackground           string   `toml:"editor_background"`
+	PaneInactive               string   `toml:"pane_inactive"`
+	PaneActive                 string   `toml:"pane_active"`
+	Quote                      string   `toml:"quote"`
+	SelectionBackground        string   `toml:"selection_background"`
+	SuggestionRemoveBackground string   `toml:"suggestion_remove_background"`
+	SuggestionAddBackground    string   `toml:"suggestion_add_background"`
+	ChangedRemoveBackground    string   `toml:"changed_remove_background"`
+	ChangedAddBackground       string   `toml:"changed_add_background"`
+	AuthorPalette              []string `toml:"author_palette"`
+	SyntaxTheme                string   `toml:"syntax_theme"`
 }
 
 type DisplayConfig struct {
@@ -160,10 +186,8 @@ func loadConfig(path string, required bool) (Config, error) {
 }
 
 func validateConfig(config Config) error {
-	switch config.Theme {
-	case "dark", "light", "no-color", "high-contrast":
-	default:
-		return fmt.Errorf("theme must be dark or light")
+	if _, err := resolveThemePalette(config.Theme, config.CustomTheme); err != nil {
+		return err
 	}
 	if config.RefreshInterval.Duration < 2*time.Second {
 		return fmt.Errorf("refresh_interval must be at least 2s")