Fix/Improve JAR download detection

Author: MLGPenguin

gradle.properties

@@ -1,4 +1,4 @@
-projectVersion=2.2.2
+projectVersion=2.2.3
 
 mcVersions=1.21,1.20.6,1.20.5,1.20.4, 1.20.3, 1.20.2, 1.20.1, 1.20, 1.19.4, 1.19.3, 1.19.2, 1.19.1, 1.19, 1.18.2, 1.18.1, 1.18, 1.17.1, 1.17, 1.16.5, 1.16.4, 1.16.3, 1.16.2, 1.16.1, 1.16, 1.15.2, 1.15.1, 1.15, 1.14.4, 1.14.3, 1.14.2, 1.14.1, 1.14, 1.13.2, 1.13.1, 1.13, 1.12.2, 1.12.1, 1.12, 1.11.2, 1.11.1, 1.11, 1.10.2, 1.10.1, 1.10, 1.9.4, 1.9.3, 1.9.2, 1.9.1, 1.9, 1.8.9,1.8.8,1.8.7,1.8.6,1.8.5,1.8.4,1.8.3,1.8.2,1.8.1,1.8
 mcVersionRange=1.8-1.21

plugin/src/main/kotlin/gg/flyte/pluginportal/plugin/util/File.kt

@@ -13,14 +13,17 @@ fun isJarDownloadUrl(url: String): Boolean {
     if (url.endsWith(".jar")) return true
 
     val connection = runCatching { URL(url).openConnection() as HttpURLConnection }.getOrNull() ?: return false
-    val fileName = connection.getHeaderField("x-bz-file-name") ?: return false
-    if (fileName.endsWith(".jar")) return true
+
+    connection.getHeaderField("x-bz-file-name")?.let {
+        return it.endsWith(".jar")
+    }
 
     connection.instanceFollowRedirects = false
-    val contentDisposition = connection.getHeaderField("Content-Disposition")
-    return contentDisposition?.let {
-        it.contains("attachment") && it.contains("filename=") && it.contains(".jar")
-    } ?: false
+    connection.getHeaderField("Content-Disposition")?.let {
+        return it.contains("attachment") && it.contains("filename=") && it.contains(".jar")
+    }
+
+    return false
 }
 
 fun File.isJarFile() = isFile && extension == "jar"