add fallback head (steve)

src/main/java/cc/fascinated/api/controller/PlayerController.java

@@ -4,6 +4,7 @@ import cc.fascinated.player.PlayerManagerService;
 import cc.fascinated.player.impl.Player;
 import cc.fascinated.player.impl.Skin;
 import cc.fascinated.player.impl.SkinPart;
+import lombok.NonNull;
 import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.http.CacheControl;
 import org.springframework.http.HttpStatus;
@@ -12,12 +13,14 @@ import org.springframework.http.ResponseEntity;
 import org.springframework.web.bind.annotation.*;
 
 import java.util.Map;
+import java.util.Objects;
 import java.util.concurrent.TimeUnit;
 
 @RestController
 @RequestMapping(value = "/")
 public class PlayerController {
 
+    @NonNull private final SkinPart defaultHead = Objects.requireNonNull(Skin.getDefaultHead(), "Default head is null");
     private final PlayerManagerService playerManagerService;
 
     @Autowired
@@ -37,15 +40,17 @@ public class PlayerController {
     @GetMapping(value = "/avatar/{id}")
     public ResponseEntity<byte[]> getPlayerHead(@PathVariable String id) {
         Player player = playerManagerService.getPlayer(id);
+        byte[] headBytes;
         if (player == null) {
-            return null;
+            headBytes = defaultHead.getPartData();
+        } else {
+            Skin skin = player.getSkin();
+            SkinPart head = skin.getHead();
+            headBytes = head.getPartData();
         }
-
-        Skin skin = player.getSkin();
-        SkinPart head = skin.getHead();
         return ResponseEntity.ok()
                 .cacheControl(CacheControl.maxAge(1, TimeUnit.HOURS).cachePublic())
                 .contentType(MediaType.IMAGE_PNG)
-                .body(head.getPartData());
+                .body(headBytes);
     }
 }

src/main/java/cc/fascinated/player/impl/Player.java

@@ -67,5 +67,4 @@ public class Player {
         this.skin = new Skin(skinJson.get("url").getAsString(), SkinType.fromString(metadataJson.get("model").getAsString()));
         this.cape = new Cape(capeJson.get("url").getAsString());
     }
-
 }

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

@@ -4,12 +4,15 @@ import cc.fascinated.Main;
 import com.fasterxml.jackson.annotation.JsonIgnore;
 import lombok.Getter;
 import lombok.SneakyThrows;
+import lombok.extern.log4j.Log4j2;
+import org.apache.tomcat.util.http.fileupload.IOUtils;
 
+import java.io.InputStream;
 import java.net.URI;
 import java.net.http.HttpRequest;
 import java.net.http.HttpResponse;
 
-@Getter
+@Getter @Log4j2
 public class Skin {
 
     /**
@@ -40,7 +43,7 @@ public class Skin {
         this.skinBytes = this.getSkinData();
 
         // The skin parts
-        this.head = new SkinPart(this.skinBytes, 8, 8, 8, 8, 20);
+        this.head = new SkinPart(this.skinBytes, SkinPartEnum.HEAD);
     }
 
     /**
@@ -57,4 +60,22 @@ public class Skin {
 
         return Main.getCLIENT().send(request, HttpResponse.BodyHandlers.ofByteArray()).body();
     }
+
+    /**
+     * Gets the default/fallback head.
+     *
+     * @return the default head
+     */
+    public static SkinPart getDefaultHead() {
+        try (InputStream stream = Main.class.getClassLoader().getResourceAsStream("images/default_head.png")) {
+            if (stream == null) {
+                return null;
+            }
+            byte[] bytes = stream.readAllBytes();
+            return new SkinPart(bytes, SkinPartEnum.HEAD);
+        } catch (Exception ex) {
+            log.warn("Failed to load default head", ex);
+            return null;
+        }
+    }
 }

src/main/java/cc/fascinated/player/impl/SkinPart.java

@@ -47,13 +47,13 @@ public class SkinPart {
      */
     private byte[] partBytes;
 
-    public SkinPart(byte[] data, int x, int y, int width, int height, int scale) {
+    public SkinPart(byte[] data, SkinPartEnum skinPartEnum) {
         this.data = data;
-        this.x = x;
-        this.y = y;
-        this.width = width;
-        this.height = height;
-        this.scale = scale;
+        this.x = skinPartEnum.getX();
+        this.y = skinPartEnum.getY();
+        this.width = skinPartEnum.getWidth();
+        this.height = skinPartEnum.getHeight();
+        this.scale = skinPartEnum.getScale();
     }
 
     /**

src/main/java/cc/fascinated/player/impl/SkinPartEnum.java

@@ -0,0 +1,16 @@
+package cc.fascinated.player.impl;
+
+import lombok.AllArgsConstructor;
+import lombok.Getter;
+
+@Getter @AllArgsConstructor
+public enum SkinPartEnum {
+
+    HEAD(8, 8, 8, 8, 20);
+
+    private final int x;
+    private final int y;
+    private final int width;
+    private final int height;
+    private final int scale;
+}