import querystring from 'querystring';
import type com from '../../proto/index.js';
import { ConverterSet, ConverterType } from '../domain.js';
import {
  alignIfLegacy,
  URL_HASH_PREFIX,
  WIX_PROTOCOL,
} from './converters-utils.js';

const WIX_VIDEO = 'video';

export const video: ConverterSet = {
  types: ['wix.common.Video'],

  [ConverterType.FROM_JSON]: {
    transform: (val: com.wix.common.Video) => {
      if (!val) {
        return;
      }

      let posterData = '';
      if (val.thumbnail?.id) {
        posterData = `${URL_HASH_PREFIX}posterUri=${val.thumbnail.id}&posterWidth=${val.thumbnail.width}&posterHeight=${val.thumbnail.height}`;
      }

      return val.id ? `wix:video://v1/${val.id}${posterData}` : val.url;
    },
  },

  [ConverterType.TO_JSON]: {
    transform: (val: string): com.wix.common.Video | undefined => {
      if (!val) {
        return;
      }

      const alignedVideo = alignIfLegacy(val, WIX_VIDEO);

      const { protocol, hash, pathname } = new URL(alignedVideo);
      const {
        posterHeight: height,
        posterWidth: width,
        posterUri,
      } = querystring.parse(hash.replace(URL_HASH_PREFIX, ''));
      const [id] = pathname.replace(`${WIX_VIDEO}://v1/`, '').split('/');

      if (protocol === WIX_PROTOCOL) {
        if (!posterUri) {
          return { id };
        }
        return {
          id,
          thumbnail: {
            height: Number(height),
            width: Number(width),
            id: posterUri.toString(),
          },
        };
      }
      return { url: val };
    },
  },
};