Add online (aka ReplayCenter) module

Add localization extra (formally known as LocalizedResourcePack)
Add version checker extra

src/main/java/com/replaymod/online/ReplayModOnline.java

@@ -0,0 +1,110 @@
+package com.replaymod.online;
+
+import com.replaymod.core.ReplayMod;
+import com.replaymod.online.api.ApiClient;
+import com.replaymod.online.gui.GuiLoginPrompt;
+import com.replaymod.online.gui.GuiReplayDownloading;
+import com.replaymod.online.handler.GuiHandler;
+import com.replaymod.replay.ReplayModReplay;
+import de.johni0702.minecraft.gui.container.GuiScreen;
+import net.minecraftforge.common.config.Configuration;
+import net.minecraftforge.fml.common.Mod;
+import net.minecraftforge.fml.common.event.FMLInitializationEvent;
+import net.minecraftforge.fml.common.event.FMLPostInitializationEvent;
+import net.minecraftforge.fml.common.event.FMLPreInitializationEvent;
+import org.apache.logging.log4j.Logger;
+
+import java.io.File;
+import java.io.IOException;
+
+@Mod(modid = ReplayModOnline.MOD_ID, useMetadata = true)
+public class ReplayModOnline {
+    public static final String MOD_ID = "replaymod-online";
+
+    @Mod.Instance(MOD_ID)
+    public static ReplayModOnline instance;
+
+    @Mod.Instance(ReplayMod.MOD_ID)
+    private static ReplayMod core;
+
+    @Mod.Instance(ReplayModReplay.MOD_ID)
+    private static ReplayModReplay replayModule;
+
+    private Logger logger;
+
+    private File downloadsFolder = new File("replay_downloads");
+
+    private ApiClient apiClient;
+
+    @Mod.EventHandler
+    public void preInit(FMLPreInitializationEvent event) {
+        logger = event.getModLog();
+
+        core.getSettingsRegistry().register(Setting.class);
+
+        Configuration config = new Configuration(event.getSuggestedConfigurationFile());
+        ConfigurationAuthData authData = new ConfigurationAuthData(config);
+        apiClient = new ApiClient(authData);
+        authData.load(apiClient);
+    }
+
+    @Mod.EventHandler
+    public void init(FMLInitializationEvent event) {
+        if (!downloadsFolder.mkdirs()) {
+            logger.warn("Failed to create downloads folder: " + downloadsFolder);
+        }
+
+        new GuiHandler(this).register();
+    }
+
+    @Mod.EventHandler
+    public void postInit(FMLPostInitializationEvent event) {
+        // Initial login prompt
+        if (!core.getSettingsRegistry().get(Setting.SKIP_LOGIN_PROMPT)) {
+            if (!isLoggedIn()) {
+                new GuiLoginPrompt(apiClient, null, null, false).display();
+            }
+        }
+    }
+
+    public ReplayMod getCore() {
+        return core;
+    }
+
+    public ReplayModReplay getReplayModule() {
+        return replayModule;
+    }
+
+    public Logger getLogger() {
+        return logger;
+    }
+
+    public ApiClient getApiClient() {
+        return apiClient;
+    }
+
+    public boolean isLoggedIn() {
+        return apiClient.isLoggedIn();
+    }
+
+    public File getDownloadsFolder() {
+        return downloadsFolder;
+    }
+
+    public File getDownloadedFile(int id) {
+        return new File(downloadsFolder, id + ".mcpr");
+    }
+
+    public boolean hasDownloaded(int id) {
+        return getDownloadedFile(id).exists();
+    }
+
+    public void startReplay(int id, String name, GuiScreen onDownloadCancelled) throws IOException {
+        File file = getDownloadedFile(id);
+        if (file.exists()) {
+            replayModule.startReplay(file);
+        } else {
+            new GuiReplayDownloading(onDownloadCancelled, this, id, name).display();
+        }
+    }
+}