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

What's New with Twitter API v2 | Docs | Twitter Developer Platform

• Tweets
  • Tweet lookup
    • GET /2/tweets
    • GET /2/tweets/:id
  • Search Tweets
    • GET /2/tweets/search/recent
    • GET /2/tweets/search/all
  • Tweet counts
    • GET /2/tweets/counts/recent
    • GET /2/tweets/counts/all
  • Timelines
    • GET /2/users/:id/tweets
    • GET /2/users/:id/mentions
  • Filtered stream
    • POST /2/tweets/search/stream/rules
    • GET /2/tweets/search/stream/rules
    • GET /2/tweets/search/stream
  • Sampled stream
    • GET /2/tweets/sample/stream
  • Retweets
    • GET /2/users/:id/retweeted_by
    • POST /2/users/:id/retweets
    • DELETE /2/users/:id/retweets/:source_tweet_id
  • Likes
    • GET /2/tweets/:id/liking_users
    • GET /2/tweets/:id/liked_tweets
    • POST /2/users/:id/likes
    • DELETE /2/users/:id/likes/:tweet_id
  • Hide replies
    • PUT /2/tweets/:id/hidden
• Users
  • User lookup
    • GET /2/users
    • GET /2/users/:id
    • GET /2/users/by
    • GET /2/users/by/username
  • Follows
    • GET /2/users/:id/following
    • GET /2/users/:id/followers
    • POST /2/users/:id/following
    • DELETE /2/users/:source_user_id/following/:target_user_id
  • Blocks
    • GET /2/users/:id/blocking
    • POST /2/users/:id/blocking
    • DELETE /2/users/:source_user_id/blocking/:target_user_id
  • Mutes
    • GET /2/users/:id/muting
    • POST /2/users/:id/muting
    • DELETE /2/users/:source_user_id/muting/:target_user_id
• Lists
  • Manage Lists
    • POST /2/lists
    • DELETE /2/lists/:id
    • PUT /2/lists/:id
  • Manage List members
    • POST /2/lists/members
    • DELETE /2/lists/:id/members/:user_id
  • Manage List follows
    • POST /2/users/:id/followed_lists
    • DELETE /2/users/:id/followed_lists/:list_id
  • Manage pinned Lists
    • POST /2/users/:id/pinned_lists
    • DELETE /2/users/:id/pinned_lists/:list_id

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

• Get a user by user name.

package main

import (
	"fmt"

	"github.com/michimani/gotwi"
	"github.com/michimani/gotwi/fields"
	"github.com/michimani/gotwi/users"
	"github.com/michimani/gotwi/users/types"
)

func main() {
	in := &gotwi.NewGotwiClientInput{
		AuthenticationMethod: gotwi.AuthenMethodOAuth2BearerToken,
	}

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

	p := &types.UserLookupByUsernameParams{
		Username: "michimani210",
		Expansions: []string{
			string(fields.UserPinnedTweetID),
		},
		UserFields: []string{
			string(fields.UserCreatedAt),
		},
		TweetFields: []string{
			string(fields.TweetCreatedAt),
		},
	}
	res, err := users.UserLookupByUsername(c, p)
	if err != nil {
		fmt.Println(err)
		return
	}

	fmt.Println("ID: ", res.Data.ID)
	fmt.Println("Name: ", res.Data.Name)
	fmt.Println("Username: ", res.Data.Username)
	fmt.Println("CreatedAt: ", res.Data.CreatedAt)
	for _, t := range res.Includes.Tweets {
		fmt.Println("PinnedTweet: ", t.Text)
	}
}

go run main.go

You will get the following output.

ID:  581780917
Name:  michimani Lv.859
Username:  michimani210
CreatedAt:  2012-05-16 12:07:04 +0000 UTC
PinnedTweet:  pinned tweet

• Get blocking users.

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

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

	p := &types.BlocksBlockingGetParams{
		ID:        "your-twitter-acount-id",
		MaxResults: 5,
	}

	res, err := users.BlocksBlockingGet(c, p)
	if err != nil {
		fmt.Println(err)
		return
	}

	for _, b := range res.Data {
		fmt.Println(b.Name)
	}
}

go run main.go

You will get the output like following.

blockingUser1
blockingUser2
blockingUser3
blockingUser4
blockingUser5