#1 temporary store fileId in RAM

stbf-common/src/main/java/ru/penkrat/stbf/common/screen/RamFileIdStorageMediaScreen.java

@@ -0,0 +1,85 @@
+package ru.penkrat.stbf.common.screen;
+
+import lombok.RequiredArgsConstructor;
+import lombok.extern.slf4j.Slf4j;
+import ru.penkrat.stbf.api.Keyboard;
+import ru.penkrat.stbf.api.Media;
+import ru.penkrat.stbf.api.Screen;
+import ru.penkrat.stbf.api.ScreenProperties;
+
+import java.util.Map;
+import java.util.concurrent.ConcurrentHashMap;
+import java.util.function.Consumer;
+import java.util.function.Supplier;
+
+@Slf4j
+@RequiredArgsConstructor
+public class RamFileIdStorageMediaScreen implements Screen {
+
+    private static final Map<String, String> STORAGE = new ConcurrentHashMap<>();
+
+    private final Screen wrapped;
+
+    private Media wrappedMedia;
+
+    @Override
+    public Media getMedia() {
+        if (wrapped.getMedia() == null) {
+            return null;
+        }
+        if (wrappedMedia != null) {
+            return wrappedMedia;
+        }
+
+        final String url = wrapped.getMedia().getUrl();
+        wrappedMedia = Media.builder()
+                .data(getData(url))
+                .url(getUrl(url))
+                .fileId(STORAGE.get(url))
+                .fileIdConsumer(saveFileId(url))
+                .mediaType(wrapped.getMedia().getMediaType())
+                .duration(wrapped.getMedia().getDuration())
+                .height(wrapped.getMedia().getHeight())
+                .width(wrapped.getMedia().getWidth())
+                .duration(wrapped.getMedia().getDuration())
+                .build();
+
+        return wrappedMedia;
+    }
+
+    protected String getUrl(String url) {
+        return STORAGE.containsKey(url) ? null : url;
+    }
+
+    protected Supplier<byte[]> getData(String url) {
+        return null;
+    }
+
+    @Override
+    public String getText() {
+        return wrapped.getText();
+    }
+
+    @Override
+    public Keyboard getKeyboard() {
+        return wrapped.getKeyboard();
+    }
+
+    @Override
+    public ScreenProperties getScreenProperties() {
+        return wrapped.getScreenProperties();
+    }
+
+    private Consumer<String> saveFileId(String srcUrl) {
+        return fileId -> {
+            if (STORAGE.containsKey(srcUrl)) {
+                return;
+            }
+            log.debug("Store {} as {}", srcUrl, fileId);
+
+            STORAGE.put(srcUrl, fileId);
+            wrappedMedia = null;
+        };
+    }
+
+}