feature: Preliminary work on workspace updating for older versions of RMCP.

Author: PhoenixVX

src/main/java/org/mcphackers/mcp/MCP.java

@@ -22,6 +22,7 @@
 import org.mcphackers.mcp.tasks.TaskStaged;
 import org.mcphackers.mcp.tasks.mode.TaskMode;
 import org.mcphackers.mcp.tasks.mode.TaskParameter;
+import org.mcphackers.mcp.tools.project.LegacyProjectAdapter;
 import org.mcphackers.mcp.tools.source.Source;
 import org.mcphackers.mcp.tools.versions.DownloadData;
 import org.mcphackers.mcp.tools.versions.json.Version;
@@ -43,6 +44,8 @@ protected MCP() {
 		pluginManager.discoverPlugins(this);
 		triggerEvent(MCPEvent.ENV_STARTUP);
 		System.gc();
+
+		LegacyProjectAdapter.updateWorkspaceIfNeeded(this);
 	}
 
 	public boolean isGUI() {

src/main/java/org/mcphackers/mcp/tools/project/LegacyProjectAdapter.java

@@ -0,0 +1,57 @@
+package org.mcphackers.mcp.tools.project;
+
+import org.mcphackers.mcp.MCP;
+import org.mcphackers.mcp.MCPPaths;
+import org.mcphackers.mcp.tasks.Task;
+
+import java.io.IOException;
+import java.nio.file.Files;
+import java.nio.file.Path;
+
+public class LegacyProjectAdapter {
+	public static void updateWorkspaceIfNeeded(MCP mcp) {
+		if (isV100Project(mcp)) {
+			mcp.log("v1.0 instance detected! Updating workspace automatically...");
+			convert100To110(mcp);
+		}
+
+		// TODO: Add implementations for earlier versions of RMCP.
+	}
+
+	/**
+	 * @param mcp MCP instance
+	 * @return If the current MCP instance is a v1.0 instance
+	 */
+	public static boolean isV100Project(MCP mcp) {
+		for (Task.Side side : Task.Side.values()) {
+			Path oldSourceFolder = MCPPaths.get(mcp, MCPPaths.PROJECT + "source", side);
+			if (Files.exists(oldSourceFolder)) {
+				return true;
+			}
+		}
+		return false;
+	}
+
+	/**
+	 * Converts a v1.0 project to v1.1.
+	 * <p>
+	 * RMCP v1.1 differences:
+	 * (side)/source was renamed to (side)/src_original
+	 *
+	 * @param mcp MCP instance
+	 */
+	public static void convert100To110(MCP mcp) {
+		// Rename source to src_original folder in each side
+		for (Task.Side side : Task.Side.values()) {
+			Path oldSourceFolder = MCPPaths.get(mcp, MCPPaths.PROJECT + "source", side);
+			Path newSourceFolder = MCPPaths.get(mcp, MCPPaths.SOURCE_UNPATCHED, side);
+			if (Files.exists(oldSourceFolder)) {
+				try {
+					Files.move(oldSourceFolder, newSourceFolder);
+				} catch (IOException e) {
+					mcp.error("Failed to move " + oldSourceFolder + " to " + newSourceFolder + ".\nPlease close RMCP and move the folder yourself.");
+				}
+			}
+		}
+	}
+}