added the examples for managing likes

v2/_examples/tweets/README.md

@@ -47,6 +47,8 @@ The examples can be run my providing some options, including the authorization t
 
 * [Users who have liked a Tweet](./likes/user-likes-lookup)
 * [Tweets liked by an user](./likes/tweet-likes-lookup)
+* [Allows a user ID to like a Tweet](./likes/user-like-tweet)
+* [Allows a user ID to unlike a Tweet](./likes/user-unlike-tweet)
 
 ### [Hide Replies](https://developer.twitter.com/en/docs/twitter-api/tweets/hide-replies/introduction)
 

v2/_examples/tweets/likes/user-like-tweet/main.go

@@ -0,0 +1,52 @@
+package main
+
+import (
+	"context"
+	"encoding/json"
+	"flag"
+	"fmt"
+	"log"
+	"net/http"
+
+	twitter "github.com/g8rswimmer/go-twitter/v2"
+)
+
+type authorize struct {
+	Token string
+}
+
+func (a authorize) Add(req *http.Request) {
+	req.Header.Add("Authorization", fmt.Sprintf("Bearer %s", a.Token))
+}
+
+/**
+	In order to run, the user will need to provide the bearer token and the list of user ids.
+**/
+func main() {
+	token := flag.String("token", "", "twitter API token")
+	userID := flag.String("user_id", "", "user id")
+	tweetID := flag.String("tweet_id", "", "tweet id")
+	flag.Parse()
+
+	client := &twitter.Client{
+		Authorizer: authorize{
+			Token: *token,
+		},
+		Client: http.DefaultClient,
+		Host:   "https://api.twitter.com",
+	}
+
+	fmt.Println("Callout to user like tweet callout")
+
+	userResponse, err := client.UserLikes(context.Background(), *userID, *tweetID)
+	if err != nil {
+		log.Panicf("user like tweet error: %v", err)
+	}
+
+	enc, err := json.MarshalIndent(userResponse, "", "    ")
+	if err != nil {
+		log.Panic(err)
+	}
+	fmt.Println(string(enc))
+
+}

v2/_examples/tweets/likes/user-unlike-tweet/main.go

@@ -0,0 +1,52 @@
+package main
+
+import (
+	"context"
+	"encoding/json"
+	"flag"
+	"fmt"
+	"log"
+	"net/http"
+
+	twitter "github.com/g8rswimmer/go-twitter/v2"
+)
+
+type authorize struct {
+	Token string
+}
+
+func (a authorize) Add(req *http.Request) {
+	req.Header.Add("Authorization", fmt.Sprintf("Bearer %s", a.Token))
+}
+
+/**
+	In order to run, the user will need to provide the bearer token and the list of user ids.
+**/
+func main() {
+	token := flag.String("token", "", "twitter API token")
+	userID := flag.String("user_id", "", "user id")
+	tweetID := flag.String("tweet_id", "", "tweet id")
+	flag.Parse()
+
+	client := &twitter.Client{
+		Authorizer: authorize{
+			Token: *token,
+		},
+		Client: http.DefaultClient,
+		Host:   "https://api.twitter.com",
+	}
+
+	fmt.Println("Callout to user unlike tweet callout")
+
+	userResponse, err := client.DeleteUserLikes(context.Background(), *userID, *tweetID)
+	if err != nil {
+		log.Panicf("user unlike tweet error: %v", err)
+	}
+
+	enc, err := json.MarshalIndent(userResponse, "", "    ")
+	if err != nil {
+		log.Panic(err)
+	}
+	fmt.Println(string(enc))
+
+}