From c576c003716851863c832b5e0dacb9186516f167 Mon Sep 17 00:00:00 2001
From: Vitaly Takmazov
Date: Wed, 19 Jul 2023 23:50:14 +0300
Subject: Migrate to Twitter API 2.0

---
 .../java/com/juick/service/TwitterService.java     | 105 +++++++++++++++++++++
 1 file changed, 105 insertions(+)
 create mode 100644 src/main/java/com/juick/service/TwitterService.java

(limited to 'src/main/java/com/juick/service/TwitterService.java')

diff --git a/src/main/java/com/juick/service/TwitterService.java b/src/main/java/com/juick/service/TwitterService.java
new file mode 100644
index 00000000..d0c105f2
--- /dev/null
+++ b/src/main/java/com/juick/service/TwitterService.java
@@ -0,0 +1,105 @@
+/*
+ * Copyright (C) 2008-2023, Juick
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as
+ * published by the Free Software Foundation, either version 3 of the
+ * License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+package com.juick.service;
+
+import com.fasterxml.jackson.databind.JsonNode;
+import com.fasterxml.jackson.databind.ObjectMapper;
+import com.github.scribejava.apis.TwitterApi20;
+import com.github.scribejava.core.builder.ServiceBuilder;
+import com.github.scribejava.core.model.OAuthRequest;
+import com.github.scribejava.core.model.Response;
+import com.github.scribejava.core.model.Verb;
+import com.github.scribejava.core.oauth.OAuth20Service;
+import com.juick.model.Message;
+import com.juick.util.MessageUtils;
+import jakarta.annotation.PostConstruct;
+import org.apache.commons.lang3.StringUtils;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+import org.springframework.beans.factory.annotation.Value;
+import org.springframework.http.MediaType;
+import org.springframework.stereotype.Service;
+
+import javax.inject.Inject;
+import java.io.IOException;
+import java.util.concurrent.ExecutionException;
+
+@Service
+public class TwitterService {
+    private static final Logger logger = LoggerFactory.getLogger("Twitter");
+    @Value("${twitter_client_id:12345678}")
+    private String clientId;
+    @Value("${twitter_client_secret:secret}")
+    private String clientSecret;
+    private static final String redirectUri = "https://juick.com/_twitter";
+    @Inject
+    private UserService userService;
+    private OAuth20Service twitterAuthService;
+
+    @Inject
+    private ObjectMapper jsonMapper;
+
+    @PostConstruct
+    public void init() {
+        ServiceBuilder twitterBuilder = new ServiceBuilder(clientId);
+        setTwitterAuthService(twitterBuilder.apiSecret(clientSecret)
+                .defaultScope("tweet.read tweet.write users.read offline.access")
+                .callback(redirectUri)
+                .build(TwitterApi20.instance()));
+    }
+
+    public void twitterPost(final Message jmsg) {
+        userService.getTwitterToken(jmsg.getUser().getUid()).ifPresent(t -> {
+            String status = MessageUtils.getMessageHashTags(jmsg) + StringUtils.defaultString(jmsg.getText());
+            if (status.length() > 253) {
+                status = status.substring(0, 252) + "…";
+            }
+            status += " http://juick.com/" + jmsg.getMid();
+            try {
+                var token = twitterAuthService.refreshAccessToken(t.secret());
+                userService.refreshTwitterToken(jmsg.getUser(), token.getAccessToken(), token.getRefreshToken());
+                OAuthRequest postRequest = new OAuthRequest(Verb.POST,
+                        "https://api.twitter.com/2/tweets");
+                var body = jsonMapper.createObjectNode();
+                body.put("text", status);
+                postRequest.addHeader("Content-Type", MediaType.APPLICATION_JSON_VALUE);
+                postRequest.setPayload(jsonMapper.writeValueAsString(body));
+                twitterAuthService.signRequest(token, postRequest);
+                try (Response twitterResponse = twitterAuthService.execute(postRequest)) {
+                    if (twitterResponse.isSuccessful()) {
+                        logger.info(twitterResponse.getBody());
+                    } else {
+                        logger.warn("Twitter error {}: {}", twitterResponse.getCode(), twitterResponse.getBody());
+                    }
+                } catch (Exception e) {
+                    logger.error("Twitter exception {}", jmsg.getUser().getName(), e);
+                }
+            } catch (IOException | InterruptedException | ExecutionException e) {
+                logger.error("Twitter exception {}", jmsg.getUser().getName(), e);
+            }
+        });
+    }
+
+    public OAuth20Service getTwitterAuthService() {
+        return twitterAuthService;
+    }
+
+    public void setTwitterAuthService(OAuth20Service twitterAuthService) {
+        this.twitterAuthService = twitterAuthService;
+    }
+}
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