gradle: Add full fat jar build option

README.md

@@ -32,3 +32,14 @@ dependencies {
 }
 
 I've also listed an example build.gradle with this repo.
+
+# Compiling as JAR file
+DemiBOT can also be compiled as a standalone JAR file.
+
+However, if you decide to go this route, you will need to supply the ffmpeg, wget and nircmd binaries alongside the JAR file.
+
+First, install [Gradle 5.2.1](https://gradle.org/next-steps/?version=5.2.1&format=bin) and add Gradle's bin folder into your PATH environment variable.
+
+Then, run this command to build your JAR file: `gradle fatjar`
+
+The artifacts can then be copied from the `build/libs` folder.

build.gradle

@@ -21,3 +21,23 @@ version '1.0-SNAPSHOT'
 apply plugin: 'java'
 
 sourceCompatibility = 1.8
+
+jar {
+    manifest {
+        attributes("Manifest-Version": "1.0", "Main-Class": "pro.loonatic.demibot.Main");
+    }
+}
+
+task fatJar(type: Jar) {
+    manifest.from jar.manifest
+    classifier = 'all'
+    from {
+        configurations.runtime.collect { it.isDirectory() ? it : zipTree(it) }
+    }
+    {
+        exclude "META-INF/*.SF"
+        exclude "META-INF/*.DSA"
+        exclude "META-INF/*.RSA"
+    }
+    with jar
+}