JPA: map UserEntity to User using `mapstruct` library

1 files changed, 42 insertions, 0 deletions

diff --git a/src/main/java/com/juick/data/UserMapper.java b/src/main/java/com/juick/data/UserMapper.java
new file mode 100644
index 00000000..ad544116
--- /dev/null
+++ b/src/main/java/com/juick/data/UserMapper.java
@@ -0,0 +1,42 @@
+/*
+ * Copyright (C) 2008-2024, Juick
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as
+ * published by the Free Software Foundation, either version 3 of the
+ * License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+package com.juick.data;
+
+import com.juick.data.entities.UserEntity;
+import com.juick.model.User;
+import org.mapstruct.Mapper;
+import org.mapstruct.Mapping;
+import org.mapstruct.Named;
+
+import java.time.Instant;
+import java.time.OffsetDateTime;
+
+@Mapper(componentModel = "spring")
+public interface UserMapper {
+    @Mapping(source = "id", target = "uid")
+    @Mapping(source = "seen", target = "seen", qualifiedByName = "offsetDateTimeConverter")
+    User userEntityToUser(UserEntity entity);
+
+    @Named("offsetDateTimeConverter")
+    static Instant map(OffsetDateTime offsetDateTime) {
+        if (offsetDateTime != null) {
+            return offsetDateTime.toInstant();
+        }
+        return null;
+    }
+}