import type LogfirePlugin from '../main';

export class StatusBar {
  private el: HTMLElement;
  private intervalId: ReturnType<typeof setInterval> | null = null;
  private wordsAdded = 0;
  private eventCount = 0;

  constructor(private plugin: LogfirePlugin) {
    this.el = plugin.addStatusBarItem();
    this.el.addClass('logfire-status-bar');
    this.el.addEventListener('click', () => this.onClick());
  }

  start(): void {
    this.plugin.eventBus.onEvent('*', (event) => {
      this.eventCount++;
      const wa = event.payload.wordsAdded;
      if (typeof wa === 'number') {
        this.wordsAdded += wa;
      }
    });

    this.update();
    this.intervalId = setInterval(() => this.update(), 1000);
  }

  destroy(): void {
    if (this.intervalId !== null) {
      clearInterval(this.intervalId);
      this.intervalId = null;
    }
    this.el.remove();
  }

  private update(): void {
    const paused = this.plugin.isPaused();
    const indicator = paused ? '\u23F8' : '\u{1F534}';
    const state = paused ? 'Paused' : 'Recording';
    const duration = this.formatDuration(this.plugin.sessionManager.sessionDurationMs);
    const words = this.wordsAdded > 0 ? ` | +${this.wordsAdded}w` : '';

    this.el.textContent = `${indicator} ${state} | ${this.eventCount} Events${words} | ${duration}`;
  }

  private onClick(): void {
    if (this.plugin.isPaused()) {
      this.plugin.resume();
    } else {
      this.plugin.pause();
    }
    this.update();
  }

  private formatDuration(ms: number): string {
    if (ms <= 0) return '0:00';
    const totalSeconds = Math.floor(ms / 1000);
    const hours = Math.floor(totalSeconds / 3600);
    const minutes = Math.floor((totalSeconds % 3600) / 60);
    const seconds = totalSeconds % 60;

    if (hours > 0) {
      return `${hours}:${String(minutes).padStart(2, '0')}:${String(seconds).padStart(2, '0')}`;
    }
    return `${minutes}:${String(seconds).padStart(2, '0')}`;
  }
}