Reusable Access Token (#1)

src/main/java/mastodon/api/LoginProcess.java

@@ -26,14 +26,10 @@ public String getLoginURL() {
         return url.build();
     }
 
-    public MastodonSession authorize(String code) throws IOException {
+    public TokenResponse authorize(String code) throws IOException {
         AuthorizationCodeTokenRequest request = flow.newTokenRequest(code);
         if (redirectUri != null)
             request.setRedirectUri(redirectUri);
-
-        TokenResponse response = request.execute();
-        Credential credential = new Credential(flow.getMethod()).setFromTokenResponse(response);
-
-        return new MastodonSession(app, credential);
+        return request.execute();
     }
 }

src/main/java/mastodon/api/MastodonSession.java

@@ -1,9 +1,12 @@
 package mastodon.api;
 
+import com.google.api.client.auth.oauth2.AuthorizationCodeFlow;
 import com.google.api.client.auth.oauth2.Credential;
+import com.google.api.client.auth.oauth2.TokenResponse;
 import com.google.api.client.http.*;
 import com.google.gson.reflect.TypeToken;
 import mastodon.api.internal.FormDataContent;
+import mastodon.api.internal.RequestsHelper;
 import mastodon.api.objects.*;
 import org.apache.commons.lang3.StringUtils;
 import org.apache.commons.lang3.Validate;
@@ -35,6 +38,12 @@ public class MastodonSession {
         this.credential = credential;
     }
 
+    public static MastodonSession getSession(MastodonApp app, TokenResponse tokenResponse, Scope... scopes) {
+        AuthorizationCodeFlow flow = RequestsHelper.createFlow(app, scopes);
+        Credential credential = new Credential(flow.getMethod()).setFromTokenResponse(tokenResponse);
+        return new MastodonSession(app, credential);
+    }
+
     public Raw raw() {
         return raw;
     }