[AFP-91] 🐛 Fix validations & error messages in 'Manager' model (@asegers)

src/main/java/com/afp/ordermanagement/model/Manager.java

@@ -4,12 +4,10 @@ import lombok.Data;
 import lombok.NoArgsConstructor;
 import org.hibernate.validator.constraints.URL;
 import org.springframework.data.annotation.Id;
+import org.springframework.data.mongodb.core.index.Indexed;
 import org.springframework.data.mongodb.core.mapping.Document;
 
 import javax.validation.constraints.*;
-import java.lang.reflect.Field;
-
-import static java.util.Objects.isNull;
 
 @Data
 @NoArgsConstructor
@@ -18,30 +16,18 @@ public class Manager {
     @Id
     private String id;
 
-    @Size(min = 1, max = 250, message = "'firstName' must be between 1 & 250 characters")
-    @NotNull
+    @Size(min = 1, max = 250)
+    @NotNull()
     private String firstName, lastName;
 
+    @Indexed(unique = true)
     @Email
     private String email;
 
-    @NotNull
-    @Size(min = 21, max = 21, message = "'googleId' is invalid")
+    @Size(min = 21, max = 21)
+    @NotNull()
     private String googleId;
 
-    @URL(message = "'imageUrl' must be a valid URL")
+    @URL
     private String imageUrl;
-
-    static public Manager combine(Manager target, Manager source) {
-        try {
-            for (Field field: Manager.class.getDeclaredFields()) {
-                String fieldName = field.getName();
-                Object sourceValue = field.get(source);
-                if (!isNull(sourceValue) && !fieldName.equals("id"))
-                    field.set(target, sourceValue);
-            }
-        } catch (Exception ignore) { }
-
-        return target;
-    }
 }