go-twitch

go-twitch is a SDK for the Twitch.tv platform API written in golang, currently under development. It supports v5 of the Twitch API, with plans to support the new Twitch API as it is developed.

The current API, V5, is deprecated and will be removed on December 31st, 2018. The new Twitch API is live but not 100% feature complete, and is under active development.

• V5 docs: https://dev.twitch.tv/docs/v5
• New API docs: https://dev.twitch.tv/docs/api ("new" API, not complete yet)

Usage

The Current API service, V5, is nicknamed kraken (or so I assume, based on the API base url or https://api.twitch.tv/kraken/). The new API is nicknamed helix (same guess off of base url, https://api.twitch.tv/helix/). To support both, this SDK offers a client for each, kraken and helix, with functionality tied to their corresponding endpoint/service. Kraken is more compmlete in both terms of API functionality and SDK coverage, while Helix is a work in progress on both parts. I plan to continue to implement things missing in Kraken while also building out Helix as it's developed. This SDK will support both until Kraken is turned off.

To include go-twitch in your project, first get it with go get:

$ go get -u github.com/catsby/go-twitch

You can then import and use it in your code:

# main.go
package main

import (
	"fmt"
	"log"

	"github.com/catsby/go-twitch/service/kraken"
)

func main() {
	client := kraken.DefaultClient(nil)

	me, err := client.GetUser(nil)
	if err != nil {
		log.Fatalf("Error finding me: %s", err)
	}

	fmt.Println("My name is", me.Name)
}

See examples/streaming/main.go in this repository for an example.

Development

Note: This is considered alpha software. It should work as described without crash or error, however method/function names and signatures may change during the alpha period. I'm still trying to finalize some design decisions, for example: 1:1 mapping of API endpoints by name, or intent, and returning raw response or not. Currently I'm using https://github.com/dnaeon/go-vcr to record interactions and test against for development. The test fixtures are stored in the fixtures directory.

To get started with development, checkout this repository and change directories.

$ mkdir -p $GOPATH/src/github.com/catsby
$ cd $GOPATH/src/github.com/catsby
$ git clone git@github.com:catsby/go-twitch.git
$ cd go-twitch

From there, run make bootstrap to install the required libraries.

$ make bootstrap
==> Bootstrapping github.com/catsby/go-twitch...
--> Installing github.com/ajg/form
--> Installing github.com/dnaeon/go-vcr/cassette
--> Installing github.com/dnaeon/go-vcr/recorder
--> Installing github.com/hashicorp/go-cleanhttp
--> Installing github.com/mitchellh/mapstructure
--> Installing gopkg.in/yaml.v2
--> Installing gopkg.in/check.v1

The tests expect an environment variable TWITCH_ACCESS_TOKEN to be set. If you want to work within the fixtures provided, you should be able to set this to anything:

$ export TWITCH_ACCESS_TOKEN="anything"

In order to modify or add new features, you'll need to create your own OAuth Access token. See the Authentication Guide on dev.twitch.tv for details. After you have your access token, you can put it into your env, similar to above.

Verify the tests pass before you start working:

$ make test

You can also run specific tests by matching a naming pattern:

$ make test TESTARGS="-v -run=TestUser_Get_self"

Pre-commit hook, fuzzing

Included in this repository is a scripts directory, containing 3 files:

- scripts/
  - fuzz.sh
  - pre-commit
  - unfuzz.sh

The pre-commit hook will check for any files that contain the contents of $TWITCH_ACCESS_TOKEN environment variable. The purpose of this pre-commit hook is to search through the files and detect if your personal access token is in the source, to prevent you from committing it. It depends on the environment variable being set, and pre-commit hook being in the correct place. You can install it with a make command:

$ make pre-commit

Fuzzing

If you've added an endpoint and as a result, go-vcr has added your API key to a fixture file, you can fuzz(?) it with scripts/fuzz.sh:

$ ./scripts/fuzz.sh

This will replace any occurrence of $TWITCH_ACCESS_TOKEN with xxxxxxxxxxxxx. The unfuzz.sh script will reverse the process if you want. The auth token is not required when tests that use the fixtures as they are.

Support

This library is provided as is, with no guarantees. I will do my best to ensure quality but always assume your own risk. See the included License as well.

Contributions

Contributions are welcome! Please open a GitHub issue or Pull Request and I'll review them as soon as I'm able to. Thanks!

The "core" of this library is mostly complete and functional, being borrowed from github.com/sethvargo/go-fastly. Majority of the remaining work needed is getting coverage of Twitch's v5 API:

• https://dev.twitch.tv/docs/v5