import {AbsDictation} from 'scriptable-abstract';

interface DictationState {
  lastText: string | null;
  lastError: Error | null;
}

/**
 * Mock implementation of Scriptable's Dictation global variable
 * Provides functionality for speech-to-text conversion
 *
 * @implements Dictation
 */
export class MockDictation extends AbsDictation<DictationState> {
  static get instance(): MockDictation {
    return super.instance as MockDictation;
  }

  constructor() {
    super({
      lastText: null,
      lastError: null,
    });
  }

  /**
   * @inheritdoc
   */
  async start(): Promise<string> {
    const text = 'Sample dictated text';
    this.setState({
      lastText: text,
      lastError: null,
    });
    return text;
  }

  /**
   * @additional
   * Get the last dictated text
   */
  getLastText(): string | null {
    return this.state.lastText;
  }

  /**
   * @additional
   * Get the last error if any
   */
  getLastError(): Error | null {
    return this.state.lastError;
  }

  /**
   * @additional
   * Clear dictation history
   */
  clear(): void {
    this.setState({
      lastText: null,
      lastError: null,
    });
  }
}