Use MD5 hash checker as temporary version check because I'm tired of …

…looking at it.

src/main/java/io/github/pseudodistant/provider/services/GetMD5FromJar.java

@@ -0,0 +1,34 @@
+package io.github.pseudodistant.provider.services;
+
+import java.io.FileInputStream;
+import java.io.InputStream;
+import java.security.MessageDigest;
+
+public class GetMD5FromJar {
+    public static byte[] createChecksum(String filename) throws Exception {
+        InputStream fis =  new FileInputStream(filename);
+
+        byte[] buffer = new byte[1024];
+        MessageDigest complete = MessageDigest.getInstance("MD5");
+        int numRead;
+
+        do {
+            numRead = fis.read(buffer);
+            if (numRead > 0) {
+                complete.update(buffer, 0, numRead);
+            }
+        } while (numRead != -1);
+
+        fis.close();
+        return complete.digest();
+    }
+
+    public static String getMD5Checksum(String filename) throws Exception {
+        byte[] b = createChecksum(filename);
+        String result = "";
+        for (int i=0; i < b.length; i++) {
+            result += Integer.toString( ( b[i] & 0xff ) + 0x100, 16).substring( 1 );
+        }
+        return result;
+    }
+}

src/main/java/io/github/pseudodistant/provider/services/GetVersionFromHash.java

@@ -0,0 +1,25 @@
+package io.github.pseudodistant.provider.services;
+
+import net.fabricmc.loader.impl.util.version.StringVersion;
+
+public class GetVersionFromHash {
+    public static StringVersion getVersionFromHash(String hash) {
+        String gameVersion = switch(hash) {
+            case "f211b7cbfb31584af3cdce35f874fe0a" -> "1.9.1";
+            case "999940dbb17877e6bc6231476494dc26" -> "1.9.2";
+            case "53e7b293fdc5cd77340fea4373b8faaa" -> "1.9.3";
+            case "8f9f93761df1fb7caca44a79653f0f1a" -> "1.9.4";
+            case "f756156871a2d0cb615936a3eb5c7b93" -> "2.0.0";
+            case "3a324f65eaf17704030a009976cb9201" -> "2.0.1";
+            case "b5f4ebec06729f662321f53e0954c9e8" -> "2.0.2";
+            case "ba70baf0f36e06339709a49d09a56d86" -> "2.0.3";
+            case "b8a93275922008cb526c305b3854c432" -> "2.0.4";
+            case "e16893e756ef1b63c8b8dc98d3e1c77d" -> "2.0.5";
+            case "b49c32739d7266f8147e47ea09754f8d" -> "2.0.6";
+            case "5b283ce4e1f0bc41205c11eedf5610d0" -> "2.0.7";
+            case "e96d6ca22a402d69b8e35e4a80cd2582" -> "2.1.0-dev1";
+            default -> "0.0.0";
+        };
+        return new StringVersion(gameVersion);
+    }
+}

src/main/java/io/github/pseudodistant/provider/services/MinicraftGameProvider.java

@@ -161,9 +161,15 @@ public boolean locateGame(FabricLauncher launcher, String[] args) {
 		}
 
 		processArgumentMap(arguments);
-
-		//locateFilesystemDependencies();
-
+
+		try {
+			String Md5 = GetMD5FromJar.getMD5Checksum(gameJar.toString());
+			gameVersion = GetVersionFromHash.getVersionFromHash(Md5);
+		} catch (Exception e) {
+			e.printStackTrace();
+		}
+
+
 		return true;
 
 	}