import { writeFileSync } from 'fs';
import { beforeAll, describe, it } from 'vitest';
import { config } from 'dotenv';
import { createSummarizer, VideoType } from '../src';

const writeTranscript = (filename: string, content: string) => {
  const transcripts = JSON.parse(content) as {
    transcripts: { text: string }[],
    summary: string,
  };
  const transcriptText = transcripts.transcripts.map((t) => t.text).join('\n');
  writeFileSync(filename, transcriptText);
};

describe('blah', () => {
  beforeAll(() => {
    config();
  });

  it('works', () => new Promise<void>((done) => {
    const summarizer = createSummarizer({
      type: VideoType.YOUTUBE,
      openAiParams: {
        apiKey: process.env.OPENAI_API_KEY as string,
      },
    });

    summarizer.on('process', (data) => {
      if (data.phase === 'success') {
        switch (data.processType) {
          case 'fetch-transcript':
            writeTranscript('transcript.txt', data.content as string);
            break;
          case 'normalize-transcript':
            writeFileSync('normalized.txt', data.content as string);
            break;
          case 'summarize-transcript':
            writeFileSync('summary.txt', data.content as string);
            break;
          default:
            break;
        }
      }
    });

    summarizer.on('error', (err) => {
      console.log(err);
      done();
    });

    summarizer.on('end', () => {
      done();
    });

    summarizer.summarize({
      url: 'https://www.youtube.com/watch?v=WeNgDxtBiyw',
    });
  }), { timeout: 180000 });
});