import 'dart:convert';

import 'package:bloc/bloc.dart';
import 'package:equatable/equatable.dart';
import 'package:flutter/material.dart';
import 'package:notube/constants.dart';
import 'package:notube/models/video.dart';
import 'package:notube/services/download.dart';

part 'dl_form_state.dart';

class DlFormCubit extends Cubit<DlFormState> {
  DlFormCubit() : super(DlFormInitial());

  late DLServices dlService;

  void setFormat(Format newFormat) {
    emit(state.copyWith(
      format: newFormat,
    ));
    print(newFormat);
  }

  void setUrl(String newUrl) {
    emit(state.copyWith(
      url: newUrl,
    ));
  }

  void parseUrl() async {
    dlService = await DLServices.init();
    var shellStream = await dlService.analyseUrl(state.url);

    shellStream.listen((line) {
      if (line[0] == '{') {
        var dataInfos = jsonDecode(line);
        var extractor = dataInfos['extractor_key'];
        var isPlaylist = dataInfos['_type'] == 'playlist';
        var videos = <Video>[];
        if (isPlaylist) {
          var playlistTitle = dataInfos['title'];
          for (var videoTmp in dataInfos['entries']) {
            var video = Video.fromJson(videoTmp);
            videos.add(video.copyWith(
                format: state.format,
                filename: '${video.id}_${state.format.format}'));
          }
        } else {
          var video = Video.fromJson(dataInfos);
          videos.add(video.copyWith(
              format: state.format,
              filename: '${video.id}_${state.format.format}'));
        }
        emit(state.copyWith(
          isParsed: true,
          videos: videos,
          extractor: extractor,
        ));
      }
    });
  }

  void clearForm() {
    emit(state.copyWith(
      videos: [],
      isParsed: false,
    ));
  }
}