ccstatusline/src/widgets/SessionClock.ts

import type { RenderContext } from '../types/RenderContext';
import type { Settings } from '../types/Settings';
import type {
    Widget,
    WidgetEditorDisplay,
    WidgetItem
} from '../types/Widget';

export class SessionClockWidget implements Widget {
    getDefaultColor(): string { return 'yellow'; }
    getDescription(): string { return 'Shows elapsed time since current session started'; }
    getDisplayName(): string { return 'Session Clock'; }
    getEditorDisplay(item: WidgetItem): WidgetEditorDisplay {
        return { displayText: this.getDisplayName() };
    }

    render(item: WidgetItem, context: RenderContext, settings: Settings): string | null {
        if (context.isPreview) {
            return item.rawValue ? '2hr 15m' : 'Session: 2hr 15m';
        }

        const duration = context.sessionDuration ?? '0m';
        return item.rawValue ? duration : `Session: ${duration}`;
    }

    supportsRawValue(): boolean { return true; }
    supportsColors(item: WidgetItem): boolean { return true; }
}