Implement support for git commit versioning

This commit also removes the Makefile introduced in 80236e6130 as make doesn't seem to like $().

Makefile

@@ -1,10 +0,0 @@
-.PHONY: dist help build clean
-dist: help
-help:
-	@echo "make help  -> Displays all available tasks"
-	@echo "     build -> Compiles the source code into a usable jar file"
-	@echo "     clean -> Cleans the repository"
-build:
-	./gradlew shadowJar
-clean:
-	rm -rf .gradle build

build.sh

@@ -0,0 +1,21 @@
+#!/bin/bash
+set -euo pipefail
+echo ":: Renaming GitHead.java to GitHead.javabak"
+mv src/main/java/de/pickshadow/plugin/GitHead.java src/main/java/de/pickshadow/plugin/GitHead.javabak
+echo ":: Writing new GitHead.java"
+cat << EOF >> src/main/java/de/pickshadow/plugin/GitHead.java
+package de.pickshadow.plugin;
+
+public class GitHead {
+    public static String commitSha = "$(git rev-parse HEAD)";
+    public static String commitShaShort = "$(git rev-parse --short HEAD)";
+    public static String commitMessage = "$(PAGER= git log --format=%B -n 1 $(git rev-parse HEAD)|head -1|sed "s/\\\/\\\\/g"|sed "s/\"/\\\\\"/g")";
+}
+EOF
+echo ":: Compiling plugin"
+./gradlew shadowJar
+EXITCODE="${?}"
+echo ":: Renaming GitHead.javabak to GitHead.java"
+mv src/main/java/de/pickshadow/plugin/GitHead.javabak src/main/java/de/pickshadow/plugin/GitHead.java
+echo ":: Exiting with code ${EXITCODE}"
+exit "${EXITCODE}"

src/main/java/de/pickshadow/plugin/GitHead.java

@@ -0,0 +1,7 @@
+package de.pickshadow.plugin;
+
+public class GitHead {
+    public static String commitSha = "<unknown>";
+    public static String commitShaShort = "<unknown>";
+    public static String commitMessage = "<unknown>";
+}

src/main/java/de/pickshadow/plugin/classes/Translation.java

@@ -19,6 +19,7 @@
 package de.pickshadow.plugin.classes;
 
 import de.pickshadow.plugin.BuildConfiguration;
+import de.pickshadow.plugin.GitHead;
 import de.pickshadow.plugin.ObjHolder;
 
 import java.util.Arrays;
@@ -42,7 +43,7 @@ public class Translation {
     public static String EVENT_LEAVE = "<HIGHLIGHT>%player% <reset>hat den Server verlassen.";
 
     // Command: /pssp
-    public static String PLUGINCOMMAND_INFO = "<#d60532><bold>PickShadow Server Plugin v" + BuildConfiguration.pluginRelease + "-" + BuildConfiguration.getTypeAsString(true) + BuildConfiguration.pluginTyperelease + "</bold>\n" +
+    public static String PLUGINCOMMAND_INFO = "<#d60532><bold>PickShadow Server Plugin v" + BuildConfiguration.pluginRelease + "-" + BuildConfiguration.getTypeAsString(true) + BuildConfiguration.pluginTyperelease + "</bold> (commit <bold><italic>" + GitHead.commitShaShort + "</italic></bold>)\n" +
             "Entwickelt von <bold>" + Arrays.toString(BuildConfiguration.pluginAuthors).replace("[", "").replace("]", "") + " & Beitragenden</bold>.\n" +
             "Der Quellcode ist unter der <bold>" + BuildConfiguration.pluginLicense + " Lizenz </bold>lizensiert und kann <underlined><click:open_url:" + BuildConfiguration.pluginSourceCode + ">hier</click></underlined> gefunden werden.";
     public static String PLUGINCOMMAND_RELOAD_CONFIG = "Die Konfigurationsdatei wird neugeladen, einen Moment bitte...";