import { httpGET, sanitizeEscapedText, toHHMMSS } from '@squeebot/core/lib/common';
import {
  Plugin,
  EventListener,
  DependencyLoad
} from '@squeebot/core/lib/plugin';

import { IMessage } from '@squeebot/core/lib/types';

async function peertubeResponse(url: URL, msg: IMessage): Promise<boolean> {
  const url2go = `${url.origin}/api/v1/videos/${url.pathname.split('/')[3]}`;
  let data;

  try {
    data = await httpGET(url2go);
    if (!data) {
      throw new Error('No API response, probably not peertube after all.');
    }
    data = JSON.parse(data);
  } catch (e) {
    return false;
  }

  if (!data.id || !data.uuid || data.errors) {
    return false;
  }

  const keys = [];
  if (data.isLive) {
    keys.push(['field', '[LIVE]', {color: 'red'}]);
  }

  keys.push(['field', 'PeerTube', { color: 'gold', type: 'title' }]);
  keys.push(['field', data.name, {type: 'description'}]);

  keys.push(['field', data.views.toString(), { type: 'metric', label: 'Views' }]);

  if (!data.isLive) {
    keys.push(['field', toHHMMSS(data.duration.toString()), { label: 'Duration' }]);
  }

  if (data.likes != null) {
    const likeCount = data.likes.toString();
    const dislikeCount = data.dislikes.toString();

    keys.push(['field', likeCount, { color: 'limegreen', label: ['▲', 'Likes'], type: 'metric' }]);
    keys.push(['field', dislikeCount, { color: 'red', label: ['▼', 'Dislikes'], type: 'metric' }]);
  }

  keys.push(['field', data.channel.displayName || data.channel.name, { label: ['By'] }]);

  msg.resolve(keys);
  return true;
}

class FediResponsePlugin extends Plugin {
  @EventListener('pluginUnload')
  public unloadEventHandler(plugin: string | Plugin): void {
    if (plugin === this.name || plugin === this) {
      this.emit('pluginUnloaded', this);
    }
  }

  @DependencyLoad('urlreply')
  addUrlReply(urlreply: any): void {
    urlreply.registerHandler(this.name, '/videos/watch/', async (url: URL, msg: IMessage) => {
      return peertubeResponse(url, msg);
    });
  }
}

module.exports = FediResponsePlugin;