Add ordering for threads

config.go

@@ -33,6 +33,7 @@ type Config struct {
 	Endpoint        string         `toml:"endpoint"`
 	Display         DisplayConfig  `toml:"display"`
 	Paths           PathConfig     `toml:"paths"`
+	Threads         ThreadConfig   `toml:"threads"`
 }
 
 type DisplayConfig struct {
@@ -45,6 +46,11 @@ type PathConfig struct {
 	ScrollInterval configDuration `toml:"scroll_interval"`
 }
 
+type ThreadConfig struct {
+	StatusOrder  []string `toml:"status_order"`
+	WithinStatus string   `toml:"within_status"`
+}
+
 func defaultConfig() Config {
 	return Config{
 		Theme:           "dark",
@@ -59,6 +65,10 @@ func defaultConfig() Config {
 			Scroll:         false,
 			ScrollInterval: configDuration{350 * time.Millisecond},
 		},
+		Threads: ThreadConfig{
+			StatusOrder:  []string{"unresolved", "outdated", "resolved"},
+			WithinStatus: "file",
+		},
 	}
 }
 
@@ -129,8 +139,35 @@ func validateConfig(config Config) error {
 	if config.Display.ThreadListWidthPercent < 20 || config.Display.ThreadListWidthPercent > 60 {
 		return fmt.Errorf("display.thread_list_width_percent must be between 20 and 60")
 	}
+	if err := validateThreadStatusOrder(config.Threads.StatusOrder); err != nil {
+		return err
+	}
+	switch config.Threads.WithinStatus {
+	case "file", "timestamp":
+	default:
+		return fmt.Errorf("threads.within_status must be file or timestamp")
+	}
 	if config.ShowAll && config.Repository == "" {
 		return fmt.Errorf("show_all requires repository")
 	}
 	return nil
 }
+
+func validateThreadStatusOrder(order []string) error {
+	if len(order) != 3 {
+		return fmt.Errorf("threads.status_order must contain unresolved, outdated, and resolved exactly once")
+	}
+	seen := map[string]bool{}
+	for _, status := range order {
+		switch status {
+		case "unresolved", "outdated", "resolved":
+			if seen[status] {
+				return fmt.Errorf("threads.status_order contains %q more than once", status)
+			}
+			seen[status] = true
+		default:
+			return fmt.Errorf("threads.status_order contains unknown status %q", status)
+		}
+	}
+	return nil
+}