signing and commenting

backend/src/main/java/ovh/herisson/Clyde/Services/Msg/DiscussionService.java

@@ -1,5 +1,16 @@
 package ovh.herisson.Clyde.Services.Msg;
 
+import java.util.List;
+
+/******************************************************
+ * @file DiscussionService.java
+ * @author Anthony Debucquoy
+ * @scope Extension messagerie
+ *
+ * Various function utilised by the messages application
+ ******************************************************/
+
+
 import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.stereotype.Service;
 
@@ -20,12 +31,27 @@ public class DiscussionService {
 		return discRepo.save(new Discussion(name, author));
 	}
 
+	/**
+	 * list discussions owned by a certain user
+	 */
 	public Iterable<Discussion> getOwned(User author){
 		return discRepo.findByMembership(author.getRegNo());
 	}
 
+	/**
+	 * Create a message and link it to it's discussion
+	 */
 	public Discussion CreateMessage(Discussion disc, Message msg){
 		disc.addMessage(msg);
 		return discRepo.save(disc);
 	}
+
+	/**
+	 * Check if a user is in a discussion
+	 */
+    public boolean hasDiscussion(User user, long id) {
+		Discussion disc = discRepo.findById(id).orElse(null);
+		List<User> members = disc.getMembers();
+		return members.contains(user);
+    }
 }