Clean up and restructure the replay sender

Add a ReplayFile class for easy reading of replay files

src/main/java/eu/crushedpixel/replaymod/utils/ReplayFile.java

@@ -0,0 +1,117 @@
+package eu.crushedpixel.replaymod.utils;
+
+import com.google.common.base.Supplier;
+import com.google.gson.Gson;
+import eu.crushedpixel.replaymod.holders.KeyframeSet;
+import eu.crushedpixel.replaymod.recording.ReplayMetaData;
+import org.apache.commons.compress.archivers.zip.ZipArchiveEntry;
+import org.apache.commons.compress.archivers.zip.ZipFile;
+
+import javax.imageio.ImageIO;
+import java.awt.image.BufferedImage;
+import java.io.*;
+
+public class ReplayFile extends ZipFile {
+
+    public static final String TEMP_FILE_EXTENSION = ".tmcpr";
+    public static final String JSON_FILE_EXTENSION = ".json";
+    public static final String ZIP_FILE_EXTENSION = ".mcpr";
+    public static final String ENTRY_RECORDING = "recording" + TEMP_FILE_EXTENSION;
+    public static final String ENTRY_METADATA = "metaData" + JSON_FILE_EXTENSION;
+    public static final String ENTRY_PATHS = "paths";
+    public static final String ENTRY_THUMB = "thumb";
+
+    private final File file;
+
+    public ReplayFile(File f) throws IOException {
+        super(f);
+        this.file = f;
+    }
+
+    public File getFile() {
+        return file;
+    }
+
+    public ZipArchiveEntry recordingEntry() {
+        return getEntry(ENTRY_RECORDING);
+    }
+
+    public Supplier<InputStream> recording() {
+        return new Supplier<InputStream>() {
+            @Override
+            public InputStream get() {
+                try {
+                    return getInputStream(recordingEntry());
+                } catch (IOException e) {
+                    throw new RuntimeException(e);
+                }
+            }
+        };
+    }
+
+    public ZipArchiveEntry metadataEntry() {
+        return getEntry(ENTRY_METADATA);
+    }
+
+    public Supplier<ReplayMetaData> metadata() {
+        return new Supplier<ReplayMetaData>() {
+            @Override
+            public ReplayMetaData get() {
+                try {
+                    BufferedReader reader = new BufferedReader(new InputStreamReader(getInputStream(metadataEntry())));
+                    return new Gson().fromJson(reader, ReplayMetaData.class);
+                } catch (IOException e) {
+                    throw new RuntimeException(e);
+                }
+            }
+        };
+    }
+
+    public ZipArchiveEntry pathsEntry() {
+        return getEntry(ENTRY_PATHS);
+    }
+
+    public Supplier<KeyframeSet[]> paths() {
+        return new Supplier<KeyframeSet[]>() {
+            @Override
+            public KeyframeSet[] get() {
+                try {
+                    ZipArchiveEntry entry = pathsEntry();
+                    if (entry == null) {
+                        return null;
+                    }
+                    BufferedReader reader = new BufferedReader(new InputStreamReader(getInputStream(entry)));
+                    return new Gson().fromJson(reader, KeyframeSet[].class);
+                } catch (IOException e) {
+                    throw new RuntimeException(e);
+                }
+            }
+        };
+    }
+
+    public ZipArchiveEntry thumbEntry() {
+        return getEntry(ENTRY_THUMB);
+    }
+
+    public Supplier<BufferedImage> thumb() {
+        return new Supplier<BufferedImage>() {
+            @Override
+            public BufferedImage get() {
+                try {
+                    ZipArchiveEntry entry = thumbEntry();
+                    if (entry == null) {
+                        return null;
+                    }
+                    InputStream is = getInputStream(entry);
+                    int i = 7;
+                    while (i > 0) {
+                        i -= is.skip(i);  // Security through obscurity \o/
+                    }
+                    return ImageIO.read(is);
+                } catch (IOException e) {
+                    throw new RuntimeException(e);
+                }
+            }
+        };
+    }
+}