gotwi

gotwi

This is a library for using the Twitter API v2 in the Go language. (It is still under development).

Supported APIs

Twitter API Documentation | Docs | Twitter Developer Platform

Progress of supporting APIs:

How to use

Prepare

Set the API key and API key secret to environment variables.

export GOTWI_API_KEY=your-api-key
export GOTWI_API_KEY_SECRET=your-api-key-secret

Request with OAuth 2.0 Bearer Token

This authentication method allows only read-only access to public information.

Example: Get a user by user name.

package main

import (
	"context"
	"fmt"

	"github.com/michimani/gotwi"
	"github.com/michimani/gotwi/fields"
	"github.com/michimani/gotwi/user/userlookup"
	"github.com/michimani/gotwi/user/userlookup/types"
)

func main() {
	c, err := gotwi.NewClient(&gotwi.NewClientInput{
		AuthenticationMethod: gotwi.AuthenMethodOAuth2BearerToken,
	})
	if err != nil {
		fmt.Println(err)
		return
	}

	p := &types.GetByUsernameInput{
		Username: "michimani210",
		Expansions: fields.ExpansionList{
			fields.ExpansionPinnedTweetID,
		},
		UserFields: fields.UserFieldList{
			fields.UserFieldCreatedAt,
		},
		TweetFields: fields.TweetFieldList{
			fields.TweetFieldCreatedAt,
		},
	}

	u, err := userlookup.GetByUsername(context.Background(), c, p)
	if err != nil {
		fmt.Println(err)
		return
	}

	fmt.Println("ID:          ", gotwi.StringValue(u.Data.ID))
	fmt.Println("Name:        ", gotwi.StringValue(u.Data.Name))
	fmt.Println("Username:    ", gotwi.StringValue(u.Data.Username))
	fmt.Println("CreatedAt:   ", u.Data.CreatedAt)
	if u.Includes.Tweets != nil {
		for _, t := range u.Includes.Tweets {
			fmt.Println("PinnedTweet: ", gotwi.StringValue(t.Text))
		}
	}
}

go run main.go

You will get the output like following.

ID:           581780917
Name:         michimani Lv.861
Username:     michimani210
CreatedAt:    2012-05-16 12:07:04 +0000 UTC
PinnedTweet:  真偽をハッキリしたい西城秀樹「ブーリアン、ブーリアン」

new client with access token

If you already have a pre-generated access token (e.g. OAuth 2.0 Authorization Code with PKCE), you can use NewClientWithAccessToken() function to generate a Gotwi client.

in := &gotwi.NewClientWithAccessTokenInput{
	AccessToken: "your-access-token",
}

c, err := gotwi.NewClientWithAccessToken(in)
if err != nil {
	// error handling
}

Request with OAuth 1.0a User Context

With this authentication method, each operation will be performed as the authenticated Twitter account. For example, you can tweet as that account, or retrieve accounts that are blocked by that account.

Example: Tweet with poll.

package main

import (
	"context"
	"fmt"

	"github.com/michimani/gotwi"
	"github.com/michimani/gotwi/tweet/managetweet"
	"github.com/michimani/gotwi/tweet/managetweet/types"
)

func main() {
	in := &gotwi.NewClientInput{
		AuthenticationMethod: gotwi.AuthenMethodOAuth1UserContext,
		OAuthToken:           "your-twitter-acount-oauth-token",
		OAuthTokenSecret:     "your-twitter-acount-oauth-token-secret",
	}

	c, err := gotwi.NewClient(in)
	if err != nil {
		fmt.Println(err)
		return
	}

	p := &types.CreateInput{
		Text: gotwi.String("This is a test tweet with poll."),
		Poll: &types.CreateInputPoll{
			DurationMinutes: gotwi.Int(5),
			Options: []string{
				"Cyan",
				"Magenta",
				"Yellow",
				"Key plate",
			},
		},
	}

	res, err := managetweet.Create(context.Background(), c, p)
	if err != nil {
		fmt.Println(err.Error())
		return
	}

	fmt.Printf("[%s] %s\n", gotwi.StringValue(res.Data.ID), gotwi.StringValue(res.Data.Text))
}

go run main.go

You will get the output like following.

[1462813519607263236] This is a test tweet with poll.

Error handling

Each function that calls the Twitter API (e.g. retweet.ListUsers()) may return an error for some reason. If the error is caused by the Twitter API returning a status other than 2XX, you can check the details by doing the following.

res, err := retweet.ListUsers(context.Background(), c, p)
if err != nil {
	fmt.Println(err)

	// more error information
	ge := err.(*gotwi.GotwiError)
	if ge.OnAPI {
		fmt.Println(ge.Title)
		fmt.Println(ge.Detail)
		fmt.Println(ge.Type)
		fmt.Println(ge.Status)
		fmt.Println(ge.StatusCode)

		for _, ae := range ge.APIErrors {
			fmt.Println(ae.Message)
			fmt.Println(ae.Label)
			fmt.Println(ae.Parameters)
			fmt.Println(ae.Code)
			fmt.Println(ae.Code.Detail())
		}

		if ge.RateLimitInfo != nil {
			fmt.Println(ge.RateLimitInfo.Limit)
			fmt.Println(ge.RateLimitInfo.Remaining)
			fmt.Println(ge.RateLimitInfo.ResetAt)
		}
	}
}

More examples

See _examples directory.

Licence

MIT

Author

michimani210