Add config print full display name of the invited person.

ma1sd.example.yaml

@@ -208,6 +208,7 @@ threepid:
 
 # Config invitation manager
 #invite:
+#  fullDisplayName: true # print full name of the invited user (default false)
 #  resolution:
 #    timer: 10
 #    period: seconds # search invites every 10 seconds (by default 5 minutes)

src/main/java/io/kamax/mxisd/config/InvitationConfig.java

@@ -123,6 +123,7 @@ public class InvitationConfig {
     private Expiration expiration = new Expiration();
     private Resolution resolution = new Resolution();
     private Policies policy = new Policies();
+    private boolean fullDisplayName = false;
 
     public Expiration getExpiration() {
         return expiration;
@@ -148,11 +149,20 @@ public class InvitationConfig {
         this.policy = policy;
     }
 
+    public boolean isFullDisplayName() {
+        return fullDisplayName;
+    }
+
+    public void setFullDisplayName(boolean fullDisplayName) {
+        this.fullDisplayName = fullDisplayName;
+    }
+
     public void build() {
         log.info("--- Invite config ---");
         log.info("Expiration: {}", GsonUtil.get().toJson(getExpiration()));
         log.info("Resolution: {}", GsonUtil.get().toJson(getResolution()));
         log.info("Policies: {}", GsonUtil.get().toJson(getPolicy()));
+        log.info("Print full display name on invitation: {}", isFullDisplayName());
     }
 
     public enum PeriodDimension {

src/main/java/io/kamax/mxisd/invitation/InvitationManager.java

@@ -287,7 +287,7 @@ public class InvitationManager {
         }
 
         String token = RandomStringUtils.randomAlphanumeric(64);
-        String displayName = invitation.getAddress().substring(0, 3) + "...";
+        String displayName = getInvitedDisplayName(invitation.getAddress());
         KeyIdentifier pKeyId = keyMgr.getServerSigningKey().getId();
         KeyIdentifier eKeyId = keyMgr.generateKey(KeyType.Ephemeral);
 
@@ -316,6 +316,14 @@ public class InvitationManager {
         return reply;
     }
 
+    private String getInvitedDisplayName(String origin) {
+        if (cfg.isFullDisplayName()) {
+            return origin;
+        } else {
+            return origin.substring(0, 3) + "...";
+        }
+    }
+
     public boolean hasInvite(ThreePid tpid) {
         for (IThreePidInviteReply reply : invitations.values()) {
             if (!StringUtils.equals(tpid.getMedium(), reply.getInvite().getMedium())) {