working on list management

src/main/java/de/srsoftware/widerhall/data/ListMember.java

@@ -1,12 +1,20 @@
 package de.srsoftware.widerhall.data;
 
-import java.sql.SQLException;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
 
-import static de.srsoftware.widerhall.Constants.INT;
-import static de.srsoftware.widerhall.Constants.VARCHAR;
+import java.sql.SQLException;
+import java.util.ArrayList;
+import java.util.List;
+import java.util.Map;
+
+import static de.srsoftware.widerhall.Constants.*;
+import static de.srsoftware.widerhall.Constants.STATE;
 
 public class ListMember {
+    private static final Logger LOG = LoggerFactory.getLogger(ListMember.class);
     public static final String TABLE_NAME = "ListMembers";
+    public static final int STATE_OWNER = 1;
     private static final String LIST_EMAIL = "list_email";
     private static final String USER_EMAIL = "user_email";
     private static final String STATE = "state";
@@ -20,6 +28,10 @@ public class ListMember {
         this.state = state;
     }
 
+    public static ListMember create(String listEmail, String userEmail, int state) throws SQLException {
+        return new ListMember(listEmail,userEmail,state).save();
+    }
+
     public static void createTable() throws SQLException {
         var sql = new StringBuilder()
                 .append("CREATE TABLE ").append(TABLE_NAME)
@@ -30,4 +42,28 @@ public class ListMember {
                 .append("PRIMARY KEY (").append(LIST_EMAIL).append(", ").append(USER_EMAIL).append("));");
         Database.open().query(sql.toString()).run();
     }
+
+    public static List<String> listsOf(User user) {
+        var list = new ArrayList<String>();
+        try {
+            var rs = Database.open()
+                    .query("SELECT "+LIST_EMAIL+" FROM " + TABLE_NAME)
+                    .where(USER_EMAIL,user.email())
+                    .where(STATE,STATE_OWNER)
+                    .exec();
+            while (rs.next()) list.add(rs.getString(LIST_EMAIL));
+        } catch (SQLException e) {
+            LOG.warn("Listing memberships lists failed: ",e);
+        }
+        return list;
+    }
+
+    private ListMember save() throws SQLException {
+        Database.open().insertInto(TABLE_NAME)
+                .values(Map.of(LIST_EMAIL,listEmail,
+                        USER_EMAIL,userEmail,
+                        STATE,state))
+                .run();
+        return this;
+    }
 }