pub package License

A Dart wrapper for Holodex API v2

Table of Contents

Features

Use this plugin in your Flutter app to:

  • Built in http client, or you can pass in your own
  • Enum and classes built in so that you don't need to consult the official Holodex API documentation
  • Get a video by its ID
  • Get a list of videos
  • Get a list of live videos
  • Get a channel by its ID
  • Get a list of channels
  • Quickly Access Live / Upcoming for a set of Channels
  • Get Videos Related To Channel
  • Get Clips of a VTuber
  • Get Collabs that mention a VTuber
  • Get Videos From Channel
  • Get a single Video's metadata
  • Search videos
  • Search for videos with comment

Getting started

  1. Get an API key at holodex.net, instructions here

  2. Add this to your pubspec.yaml file

     dependencies:
         dart_holodex_api: ^0.2.1
    
  3. Then run dart pub get or flutter pub get.

Usage

Full example.

Get an instance of HolodexClient with your API key

final HolodexClient holodexClient = HolodexClient(apiKey: apiKey);

Remember to close the client when you are done with it. This closes the client and cleans up any resources associated with it.

It's important to close the client when it's done being used; failing to do so can cause the Dart process to hang.

holodexClient.close();

Get a video by its ID

Returns VideoFull

Arguments:

  • videoId The video ID as a string
  • includes Request extra data be included in the results. They are not guarenteed to be returned.
// Get one video and print it
final VideoFull video = await holodexClient.getVideoFromId(
    'Gx_GPwpyLxw',
    includes: <Includes>[
        Includes.channelStats,
        Includes.clips,
        Includes.description,
        Includes.liveInfo,
        Includes.mentions,
        Includes.refers,
        Includes.simulcasts,
        Includes.songs,
        Includes.sources,
    ],
);
print(video.toString());

Get a list of videos

Returns VideoFullList

Arguments:

  • channelId Filter by video uploader channel ID
  • includes Request extra data be included in the results. They are not guarenteed to be returned.
  • lang Filter by the Language
  • limit Limit the number of results returned. Maximum value of 50
  • maxUpcomingHours Number of maximum hours upcoming to get upcoming videos by (for rejecting waiting rooms that are two years out)
  • mentionedChannelId Filter by mentioned channel id, excludes itself. Generally used to find collabs/clips that include the requested channel
  • offset Receive results starting at this number in the array from the Holodex API
  • order Order results by ascending or descending
  • organization Filter by clips that feature the org's talent or videos posted by the org's talent.
  • paginated If paginated is set to true, returns VideoFullList with total, otherwise returns VideoFullList without the total.
  • sort Sort the returned data by this field
  • status Filter by the video status
  • topic Filter by video topic ID
  • type Filter by type of video, either clips or streams
// Get a bunch of videos and print them
final VideoFullList videoList = await holodexClient.getVideos(
    channelId: 'UCsYcCwDqv6Sg8KMIIMF54SA', // Kiriku Translation
    includes: <Includes>[
        Includes.channelStats,
        Includes.clips,
        Includes.description,
        Includes.liveInfo,
        Includes.mentions,
        Includes.refers,
        Includes.simulcasts,
        Includes.songs,
        Includes.sources,
    ],
    lang: <Language>[Language.all],
    limit: 25,
    maxUpcomingHours: 1000,
    mentionedChannelId: 'UCDqI2jOz0weumE8s7paEk6g', // Roboco
    offset: 0,
    order: Order.descending,
    organization: Organization.Hololive,
    paginated: true,
    sort: <VideoSort>[VideoSort.availableAt],
    status: <VideoStatus>[VideoStatus.past],
    // Videos of type VideoType.clip cannot not have topic. Streams may or may not have topic.
    // topic: 'minecraft',
    type: VideoType.clip
);
print(videoList.toString());

Get a list of live videos

Returns VideoFullList

This is somewhat similar to calling listVideos().

However, this endpoint imposes these default values on the query parameters: You can choose to override them by providing your own values.

status: [VideoStatus.live, VideoStatus.upcoming],
type: VideoType.stream,
sort: [VideoSort.availableAt],
order: Order.ascending,
max_upcoming_hours: 48,
limit: 9999,
include: [Includes.liveInfo] + query's include

Arguments:

  • channelId Filter by video uploader channel ID
  • includes Request extra data be included in the results. They are not guarenteed to be returned.
  • lang Filter by the Language
  • limit Limit the number of results returned.
  • maxUpcomingHours Number of maximum hours upcoming to get upcoming videos by (for rejecting waiting rooms that are two years out)
  • mentionedChannelId Filter by mentioned channel id, excludes itself. Generally used to find collabs/clips that include the requested channel
  • offset Receive results starting at this number in the array from the Holodex API
  • order Order by ascending or descending
  • organization Filter by clips that feature the org's talent or videos posted by the org's talent.
  • paginated If paginated is set to true, returns VideoFullList with total, otherwise returns VideoFullList without the total.
  • sort Sort the returned data by this field
  • status Filter by the video status
  • topic Filter by video topic ID
  • type Filter by type of video, either clips or streams
final VideoFullList liveVideos = await holodexClient.getLiveVideos(
    includes: [
      Includes.channelStats
    ]
);
print(liveVideos.toString());

Get a channel by its ID

Returns Channel

Arguments:

  • channelId ID of the Youtube Channel that is being queried
final Channel ceresFauna = await holodexClient.getChannelFromId('UCO_aKKYxn4tvrqPjcTzZ6EQ');
print(ceresFauna.toString());

Get a list of channels

Arguments:

  • lang List of languages. Language is a property of Channel, so only Channels satisfying the language will be returned. Leave empty to search for Vtubers and/or all clippers.
  • limit Results limit
  • offset Offset results
  • order Order.ascending or Order.descending order, default ascending.
  • organization If set, filter for Vtubers belonging to a specific org
  • sort Column to sort on, leave default to use ChannelSort.organization as sort. Theoretically any value in ChannelSort should work
final List<Channel> channels = await holodexClient.getChannels(
    limit: 25,
    offset: 0,
    order: Order.ascending,
    organization: Organization.AtelierLive,
    sort: [ChannelSort.organization]
);
print(channels.toString());

Quickly Access Live / Upcoming for a set of Channels

This endpoint is similar to the getLiveVideos() method and usually replies much faster. It is more friendly in general. The cost to execute a lookup is significantly cheaper. It's unfortunately less customizable as a result.

We recommend using this if you have a fixed set of channel IDs to look up status for.

Arguments:

  • channelIds List of channel IDs to get the live videos from.
final List<Video> quickLiveVideos = await holodexClient.getLiveVideosFromChannelsQuickly([
    'UCQ0UDLQCjY0rmuxCDE38FGg', // Matsuri
    'UCZlDXzGoo7d44bwdNObFacg', // Kanata
    'UCqm3BQLlJfvkTsX_hvm0UmA' // Watame
]);
print('Requested Live Videos From Channels: ${quickLiveVideos.length}');

Get Videos Related To Channel

A simplified method for access channel specific data. If you want more customization, the same result can be obtained by calling the queryVideos() method.

Arguments

  • channelId ID of the Youtube Channel that is being queried
  • type The type of video resource to fetch. Clips finds clip videos of a vtuber channel, Video finds the channelId channel's uploads, and collabs finds videos uploaded by other channels that mention this channelId
  • includes Request extra data be included in the results. They are not guarenteed to be returned.
  • lang List of Language enum to filter channels/clips. Official streams do not follow this parameter
  • limit Result limit. Max of 50.
  • offset Offset results
  • paginated If paginated is set to true, returns VideoFullList with total, otherwise returns VideoFullList without the total.
final VideoFullList matsuriClips = await holodexClient.getVideosRelatedToChannel(
    'UCQ0UDLQCjY0rmuxCDE38FGg', // Matsuri
    type: VideoSearchType.clips
);
print('Clips including Matsuri: ${matsuriClips.total}');
print('Returned clips including Matsuri: ${matsuriClips.videos.length}');

Get Clips of a VTuber

Alias of getVideosRelatedToChannel()

Returns VideoFullList

Arguments

  • channelId ID of the Youtube Channel that is being queried
  • includes Request extra data be included in the results. They are not guarenteed to be returned.
  • lang List of Language enum to filter channels/clips. Official streams do not follow this parameter
  • limit Result limit. Max of 50.
  • offset Offset results
  • paginated If paginated is set to true, returns VideoFullList with total, otherwise returns VideoFullList without the total.
final VideoFullList matsuriClips = await holodexClient.getVTuberClips('UCQ0UDLQCjY0rmuxCDE38FGg');
print('Clips including Matsuri: ${matsuriClips.total}');
print('Returned clips including Matsuri: ${matsuriClips.videos.length}\n');

Get Collabs that mention a VTuber

Alias of getVideosRelatedToChannel()

Arguments

  • channelId ID of the Youtube Channel that is being queried
  • includes Request extra data be included in the results. They are not guarenteed to be returned.
  • lang List of Language enum to filter channels/clips. Official streams do not follow this parameter
  • limit Result limit. Max of 50.
  • offset Offset results
  • paginated If paginated is set to any non-empty value, returns VideoFullList with total, otherwise returns VideoFullList without the total.
final VideoFullList matsuriCollabs = await holodexClient.getVTuberCollabs('UCQ0UDLQCjY0rmuxCDE38FGg');
print('Collabs including Matsuri: ${matsuriCollabs.total}');
print('Returned collabs including Matsuri: ${matsuriCollabs.videos.length}\n');

Get Videos From Channel

Alias of getVideosRelatedToChannel()

Returns VideoFullList

Arguments

  • channelId ID of the Youtube Channel that is being queried
  • includes Request extra data be included in the results. They are not guarenteed to be returned.
  • lang List of Language enum to filter channels/clips. Official streams do not follow this parameter
  • limit Result limit. Max of 50.
  • offset Offset results
  • paginated If paginated is set to true, returns VideoFullList with total, otherwise returns VideoFullList without the total.
final VideoFullList matsuriUploads = await holodexClient.getChannelVideos('UCQ0UDLQCjY0rmuxCDE38FGg');
print('Total Matsuri uploads: ${matsuriUploads.total}');
print('Returned uploads: ${matsuriUploads.videos.length}\n');

Get a single Video's metadata

Retrieves Comments if timestampComments is set to true

Retrieves Recommendations if query parameter recommendationLanguages is set

final VideoMetadata videoMetadata = await holodexClient.getVideoMetadata(
    'eJJuy5rY57w', // Shion's singing stream
    timestampComments: true,
    recommendationLanguages: [Language.all],
);
final VideoFull shionSingingStream = videoMetadata.video;
final List<Comment>? timestampComments = videoMetadata.comments;
final List<Video>? recommendations = videoMetadata.recommendations;

print('Songs: ${shionSingingStream.songcount}');
print('Video Comments With Timestamps: ${timestampComments?.length}');
print('Video Recommendations: ${recommendations?.length}');

Search For Videos

Flexible endpoint to search for videos fufilling multiple conditions.

Descriptions with "any" implies an OR condition, and "all" implies a AND condition.

Searching for topics and clips is not supported, because clips do not contain topics

Arguments

  • searchSort Sort by newest or oldest
  • languages If set, will filter clips to only show clips with these languages + all vtuber streams (provided searchTargets is not set to filter out streams)
  • searchTargets Target types of videos
  • conditions Match all of the items. > For each item: Text to look for text in video title or description
  • topics Return videos that match one of the provided topics
  • vch Videos with all of the specified channel ids. If two or more channel IDs are specified, will only return their collabs, or if one channel is a clipper, it will only show clips of the other vtubers made by this clipper.
  • organizations Videos of channels in any of the specified organizations, or clips that involve a channel in the specified organization.
  • paginated If paginated is set to true, returns VideoFullList with total, otherwise returns VideoFullList without the total.
  • offset Offset results
  • limit Result limit
final VideoFullList searchVideos = await holodexClient.searchVideos(
    searchSort: SearchSort.newest,
    languages: [Language.all],
    searchTargets: [SearchTarget.clip, SearchTarget.stream],
    conditions: ['karaoke'],
    topics: ['singing'],
    vch: <String>[],
    organizations: [Organization.Hololive],
    paginated: true,
    offset: 0,
    limit: 25,
);
print('Videos Found: ${searchVideos.videos.length}\n');

Search For Videos With a Comment

Flexible endpoint to search for comments in videos fufilling multiple conditions.

Descriptions with "any" implies an OR condition, and "all" implies a AND condition.

Searching for topics and clips is not supported, because clips do not contain topics

Arguments

  • searchSort Sort by newest or oldest
  • languages If set, will filter clips to only show clips with these languages + all vtuber streams (provided searchTargets is not set to filter out streams)
  • searchTargets Target types of videos
  • comment Find videos with comments containing specified string (case insensitive)
  • topics Return videos that match one of the provided topics
  • vch Videos with all of the specified channel ids. If two or more channel IDs are specified, will only return their collabs, or if one channel is a clipper, it will only show clips of the other vtubers made by this clipper.
  • organizations Videos of channels in any of the specified organizations, or clips that involve a channel in the specified organization.
  • paginated If paginated is set to true, returns VideoWithCommentsList with total, otherwise returns VideoWithCommentsList without the total.
  • offset Offset results
  • limit Result limit
final VideoWithCommentsList searchComments = await holodexClient.searchComments(
    searchSort: SearchSort.newest,
    languages: [Language.all],
    searchTargets: [SearchTarget.clip, SearchTarget.stream],
    comment: 'shion',
    topics: ['singing'],
    vch: <String>[],
    organizations: [Organization.Hololive],
    paginated: true,
    offset: 0,
    limit: 25,
);
print('Videos with Comment: ${searchComments.videos.length}\n');

Additional information

Read the official API documentation here

Visit Holodex.net

Some of this package was based off of the C# version

Libraries

dart_holodex_api
Support for doing something awesome.