use better responses

src/main/java/cc/fascinated/model/player/Skin.java

@@ -2,6 +2,7 @@ package cc.fascinated.model.player;
 
 import cc.fascinated.config.Config;
 import cc.fascinated.util.PlayerUtils;
+import com.fasterxml.jackson.annotation.JsonIgnore;
 import com.fasterxml.jackson.annotation.JsonProperty;
 import com.google.gson.JsonObject;
 import lombok.AllArgsConstructor;
@@ -33,6 +34,7 @@ public class Skin {
     /**
      * The skin image for the skin
      */
+    @JsonIgnore
     private final BufferedImage skinImage;
 
     /**

src/main/java/cc/fascinated/model/response/ErrorResponse.java

@@ -1,40 +0,0 @@
-package cc.fascinated.model.response;
-
-import com.fasterxml.jackson.annotation.JsonFormat;
-import io.micrometer.common.lang.NonNull;
-import lombok.Getter;
-import lombok.NoArgsConstructor;
-import lombok.Setter;
-import lombok.ToString;
-import org.springframework.http.HttpStatus;
-
-import java.util.Date;
-
-@NoArgsConstructor
-@Setter
-@Getter
-@ToString
-public final class ErrorResponse {
-    /**
-     * The status code of this error.
-     */
-    @NonNull
-    private HttpStatus status;
-
-    /**
-     * The message of this error.
-     */
-    @NonNull private String message;
-
-    /**
-     * The timestamp this error occurred.
-     */
-    @JsonFormat(shape = JsonFormat.Shape.STRING, pattern = "dd-MM-yyyy hh:mm:ss")
-    private Date timestamp;
-
-    public ErrorResponse(@NonNull HttpStatus status, @NonNull String message) {
-        this.status = status;
-        this.message = message;
-        timestamp = new Date();
-    }
-}

src/main/java/cc/fascinated/model/response/Response.java

@@ -0,0 +1,31 @@
+package cc.fascinated.model.response;
+
+import io.micrometer.common.lang.NonNull;
+import lombok.AllArgsConstructor;
+import lombok.Getter;
+import org.springframework.http.HttpStatus;
+import org.springframework.http.ResponseEntity;
+import org.springframework.web.servlet.function.EntityResponse;
+
+@Getter @AllArgsConstructor
+public class Response {
+
+    /**
+     * The status code of this error.
+     */
+    private HttpStatus status;
+
+    /**
+     * The message of this error.
+     */
+    private String message;
+
+    /**
+     * Gets this response as a {@link ResponseEntity}.
+     *
+     * @return the response entity
+     */
+    public ResponseEntity<?> toResponseEntity() {
+        return new ResponseEntity<>(this, status);
+    }
+}

src/main/java/cc/fascinated/model/response/impl/PlayerNotFoundResponse.java

@@ -0,0 +1,11 @@
+package cc.fascinated.model.response.impl;
+
+import cc.fascinated.model.response.Response;
+import org.springframework.http.HttpStatus;
+
+public class PlayerNotFoundResponse extends Response {
+
+    public PlayerNotFoundResponse() {
+        super(HttpStatus.NOT_FOUND, "Player not found.");
+    }
+}