add separate table for users

app/src/main/java/com/dkanada/gramophone/model/Server.java

@@ -15,20 +15,14 @@ public class Server {
     public String name;
     public String url;
 
-    public String user;
-    public String token;
-
     public Server() {
         this.id = UUID.randomUUID().toString();
     }
 
-    public Server(String name, String url, String user, String token) {
+    public Server(String name, String url) {
         this.id = UUID.randomUUID().toString();
 
         this.name = name;
         this.url = url;
-
-        this.user = user;
-        this.token = token;
     }
 }

app/src/main/java/com/dkanada/gramophone/model/User.java

@@ -0,0 +1,39 @@
+package com.dkanada.gramophone.model;
+
+import androidx.annotation.NonNull;
+import androidx.room.Entity;
+import androidx.room.ForeignKey;
+import androidx.room.PrimaryKey;
+
+import java.util.UUID;
+
+@Entity(tableName = "users")
+public class User {
+    @NonNull
+    @PrimaryKey
+    public String id;
+
+    @ForeignKey(
+            entity = Server.class,
+            parentColumns = {"id"},
+            childColumns = {"serverId"},
+            onDelete = ForeignKey.CASCADE
+    )
+    public String serverId;
+
+    public String name;
+    public String token;
+
+    public User() {
+        this.id = UUID.randomUUID().toString();
+    }
+
+    public User(String serverId, String name, String token) {
+        this.id = UUID.randomUUID().toString();
+
+        this.serverId = serverId;
+
+        this.name = name;
+        this.token = token;
+    }
+}