ChessApi

chess_api is a gem that wraps Chess.com's Published-Data API.

Installation

Add this line to your application's Gemfile:

gem 'chess_api'

And then execute:

$ bundle install

Or install it yourself as:

$ gem install chess_api

Usage

To interact with the ChessApi, you'll first need to create a client object. You have the option of specifying a Faraday adapter.

client = ChessApi::Client.new
# or
client = ChessApi::Client.new(adapter: your_adapter_here)

From there, you'll be able to perform several operations:

Fetch a player on Chess.com by username

irb(main):018:0> player = client.player.retrieve(username: "GothamChess")
=>
#<ChessApi::Player:0x000000013bc41198
...

irb(main):019:0> player.username
=> "gothamchess"

irb(main):020:0> player.title
=> "IM"

irb(main):021:0> player.is_streamer
=> true

irb(main):022:0> player.twitch_url
=> "https://twitch.tv/GothamChess"

As you can see in the example above, you can access the fields returned by the Chess.com API through standard Ruby method syntax.

Fetching a list of players with a particular title on Chess.com

irb(main):001:0> client.titled_player.with_title(title_abbreviation: "WGM")
=>
#<ChessApi::Collection:0x000000013ecc78d0
 @data=
  [#<ChessApi::TitledPlayer:0x000000013f175d78 @attributes=#<OpenStruct username="abrahamyan-la">>,
   #<ChessApi::TitledPlayer:0x000000013f175620 @attributes=#<OpenStruct username="adriananikolova">>,
   #<ChessApi::TitledPlayer:0x000000013f175260 @attributes=#<OpenStruct username="advantagelucy">>,
   #<ChessApi::TitledPlayer:0x000000013f174ec8 @attributes=#<OpenStruct username="ahachess">>,
   ...
  ]

Fetching a player's online status on Chess.com

irb(main):001:0> client.player.online_status(username: "hikaru")
=> "offline"

irb(main):002:0> client.player.online_status(username: "ryanjcaldwell")
=> "online"

Fetching the clubs that a player belongs to on Chess.com

irb(main):001:0> clubs = client.player.clubs(username: "GothamChess")
=>
#<ChessApi::Collection:0x000000015dbe5998
...

irb(main):002:0> clubs.data.map { |club| [club.name, club.joined] }
=>
[["Chess.comTV", 1533262149],
 ["Hikaru Nakamura Fan Club", 1547248727],
 ["Chess.com Beta", 1572489771],
 ["PRO Chess League", 1547048660],
 ["Streamers", 1533671931],
 ["4 Player Chess", 1533746676],
 ["Gotham's Mob", 1528247350],
 ["Arena Kings Championship Season 5", 1575824630],
 ["Marshall Chess Club Official - Match Team", 1587681476],
 ["Fiona's Fight Club", 1616428995]]

Fetching the monthly game archive links for a player on Chess.com

irb(main):001:0> result = client.monthly_game_archive.list(username: "ryanjcaldwell")
=>
#<ChessApi::Collection:0x0000000153351480
...

irb(main):002:0> result.data.first.url
=> "https://api.chess.com/pub/player/ryanjcaldwell/games/2019/03"

Fetching the Daily Puzzle from Chess.com

irb(main):001:0> daily_puzzle = client.daily_puzzle.retrieve
=>
#<ChessApi::DailyPuzzle:0x000000012d98b218
...

irb(main):002:0> daily_puzzle.title
=> "Disconnecting Connection"

irb(main):003:0> daily_puzzle.pgn
=> "[Result \"*\"]\r\n[FEN \"3rb3/5pk1/2n1pn1p/rp3Pp1/6P1/1P2B2P/2R3BK/R3N3 w - - 0 1\"]\r\n\r\n1.Rxa5 Nxa5 2.Bb6 Rd1 3.Bxa5 *"

irb(main):004:0> daily_puzzle.image
=> "https://www.chess.com/dynboard?fen=3rb3/5pk1/2n1pn1p/rp3Pp1/6P1/1P2B2P/2R3BK/R3N3%20w%20-%20-%200%201&size=2"

Fetching a random Daily Puzzle from Chess.com

irb(main):001:0> random_daily_puzzle = client.daily_puzzle.random
=>
#<ChessApi::DailyPuzzle:0x000000014740e5a0
...

irb(main):002:0> random_daily_puzzle.publish_time
=> 1306047600

irb(main):003:0> random_daily_puzzle.pgn
=> "[Date \"????.??.??\"]\r\n[Result \"*\"]\r\n[FEN \"1B6/1p4Rp/p4kp1/8/8/8/Pr4PP/6K1 b - - 0 1\"]\r\n\r\n1...Rb1+ 2. Kf2 Kxg7\r\n*"

irb(main):004:0> random_daily_puzzle.url
=> "https://www.chess.com/forum/view/daily-puzzles/5222011---eluding-danger"

Development

After checking out the repo, run bin/setup to install dependencies. Then, run rake spec to run the tests. You can also run bin/console for an interactive prompt that will allow you to experiment.

To install this gem onto your local machine, run bundle exec rake install. To release a new version, update the version number in version.rb, and then run bundle exec rake release, which will create a git tag for the version, push git commits and the created tag, and push the .gem file to rubygems.org.

Contributing

Bug reports and pull requests are welcome on GitHub at https://github.com/RyanJamesCaldwell/chess_api.

License

The gem is available as open source under the terms of the MIT License.