1.6.0-SNAPSHOT update codes (#28)

* Code format Revamp

* Update JavascriptExpansionCommands.java

* Get out of here, regex...

* Updated to ver. 1.6.0-SNAPSHOT

* Update JavascriptExpansion.java

* Forgot to manage for setIfNull, sorry

* Fix wrong args from CMD Manager migration

* Fix error on 1.13+

pom.xml

@@ -2,7 +2,7 @@
   <modelVersion>4.0.0</modelVersion>
   <groupId>com.extendedclip.papi.expansion.javascript</groupId>
   <artifactId>javascript-expansion</artifactId>
-  <version>1.5.4</version>
+  <version>1.6.0-SNAPSHOT</version>
   <name>PAPI-Expansion-Javascript</name>
   <description>PlaceholderAPI expansion for javascript placeholders</description>
     
@@ -21,13 +21,13 @@
         <dependency>
             <groupId>org.spigotmc</groupId>
             <artifactId>spigot-api</artifactId>
-            <version>1.15.2-R0.1-SNAPSHOT</version>
+            <version>1.16.1-R0.1-SNAPSHOT</version>
             <scope>provided</scope>
         </dependency>
         <dependency>
          <groupId>me.clip</groupId>
           <artifactId>placeholderapi</artifactId>
-          <version>2.10.5</version>
+          <version>2.10.9</version>
          <scope>provided</scope>
         </dependency>
     </dependencies>
@@ -37,7 +37,7 @@
             <plugin>
                 <groupId>org.apache.maven.plugins</groupId>
                 <artifactId>maven-jar-plugin</artifactId>
-                <version>3.0.2</version>
+                <version>3.2.0</version>
                 <configuration>
                     <finalName>${name}</finalName>
                     <archive>
@@ -51,7 +51,7 @@
             <plugin>
                 <groupId>org.apache.maven.plugins</groupId>
                 <artifactId>maven-compiler-plugin</artifactId>
-                <version>3.7.0</version>
+                <version>3.8.1</version>
                 <configuration>
                     <target>1.8</target>
                     <source>1.8</source>

scripts/random_letter.js

@@ -4,5 +4,4 @@ function randomLetter() {
 
   return String.fromCharCode(start + Math.floor(random));
 }
-
 randomLetter();

src/main/java/com/extendedclip/papi/expansion/javascript/ExpansionUtils.java

@@ -0,0 +1,108 @@
+package com.extendedclip.papi.expansion.javascript;
+
+import jdk.nashorn.api.scripting.ScriptObjectMirror;
+import org.bukkit.Bukkit;
+import org.bukkit.ChatColor;
+import org.bukkit.command.CommandSender;
+import org.bukkit.configuration.MemorySection;
+import org.jetbrains.annotations.NotNull;
+
+import java.util.*;
+import java.util.logging.Level;
+import java.util.logging.Logger;
+import java.util.stream.Collectors;
+
+public class ExpansionUtils {
+
+    public static final String DEFAULT_ENGINE = "nashorn";
+    public static final String PREFIX = "[PAPI] [Javascript-Expansion] ";
+    private static final Logger logger = Bukkit.getLogger();
+
+    public static @NotNull String colorize(String s) {
+        return ChatColor.translateAlternateColorCodes('&', s);
+    }
+
+    public static void sendMsg(CommandSender sender, String... msg) {
+        sender.sendMessage(colorize(Arrays.stream(msg).filter(Objects::nonNull).collect(Collectors.joining("\n"))));
+    }
+
+    public static void warnLog(String log, Throwable throwable) {
+        warnLog(log, throwable, true);
+    }
+
+    public static void infoLog(final String log) {
+        infoLog(log, true);
+    }
+
+    public static void infoLog(String log, boolean canPrefix) {
+        String prefix = "";
+        if (canPrefix) prefix = PREFIX;
+        logger.info(colorize(prefix + log));
+    }
+
+    public static void warnLog(String log, Throwable throwable, boolean canPrefix) {
+        String prefix = "";
+        if (canPrefix) prefix = PREFIX;
+        if (throwable == null) {
+            logger.log(Level.WARNING, prefix + log);
+        } else logger.log(Level.WARNING, prefix + log, throwable);
+    }
+
+    public static void errorLog(String log, Throwable throwable) {
+        errorLog(log, throwable, true);
+    }
+
+    public static void errorLog(String log, Throwable throwable, boolean canPrefix) {
+        String prefix = "";
+        if (canPrefix) prefix = PREFIX;
+        if (throwable == null) {
+            logger.log(Level.SEVERE, prefix + log);
+        } else {
+            logger.log(Level.SEVERE, prefix + log, throwable);
+        }
+    }
+
+    // Only support for Nashorn engine!
+    protected static Object jsonToJava(Object jsObj) {
+        if (jsObj instanceof ScriptObjectMirror) {
+            ScriptObjectMirror jsObjectMirror = (ScriptObjectMirror) jsObj;
+            if (jsObjectMirror.isArray()) {
+                List<Object> list = new ArrayList<>();
+                for (Map.Entry<String, Object> entry : jsObjectMirror.entrySet()) {
+                    list.add(jsonToJava(entry.getValue()));
+                }
+                return list;
+            } else {
+                Map<String, Object> map = new HashMap<>();
+                for (Map.Entry<String, Object> entry : jsObjectMirror.entrySet()) {
+                    map.put(entry.getKey(), jsonToJava(entry.getValue()));
+                }
+                return map;
+            }
+        } else {
+            return jsObj;
+        }
+    }
+
+    protected static Object ymlToJavaObj(Object obj) {
+        if (obj instanceof MemorySection) {
+            MemorySection ymlMem = (MemorySection) obj;
+            if (ymlMem.isList(ymlMem.getCurrentPath())) {
+                ArrayList<Object> list = new ArrayList<>();
+                for (String entry : ymlMem.getKeys(true)) {
+                    list.add(ymlToJavaObj(ymlMem.get(entry)));
+                }
+                return list;
+            } else {
+                Map<String, Object> map = new HashMap<>();
+                for (String entry : ymlMem.getKeys(true)) {
+                    map.put(entry, ymlToJavaObj(ymlMem.get(entry)));
+                }
+                return map;
+            }
+        } else {
+            return obj;
+        }
+    }
+
+}

src/main/java/com/extendedclip/papi/expansion/javascript/JavascriptExpansion.java

@@ -26,14 +26,16 @@ import me.clip.placeholderapi.expansion.Configurable;
 import me.clip.placeholderapi.expansion.PlaceholderExpansion;
 import org.bukkit.Bukkit;
 import org.bukkit.OfflinePlayer;
+import org.bukkit.command.Command;
 import org.bukkit.command.CommandMap;
+import org.bukkit.command.SimpleCommandMap;
+import org.jetbrains.annotations.NotNull;
 
 import javax.script.ScriptEngine;
 import javax.script.ScriptEngineFactory;
 import javax.script.ScriptEngineManager;
 import java.lang.reflect.Field;
 import java.util.*;
-import java.util.logging.Level;
 import java.util.stream.Collectors;
 
 public class JavascriptExpansion extends PlaceholderExpansion implements Cacheable, Configurable {
@@ -41,22 +43,26 @@ public class JavascriptExpansion extends PlaceholderExpansion implements Cacheab
     private ScriptEngine globalEngine = null;
 
     private JavascriptPlaceholdersConfig config;
-    private final Set<JavascriptPlaceholder> scripts = new HashSet<>();
+    private final Set<JavascriptPlaceholder> scripts;
-    private final String VERSION = getClass().getPackage().getImplementationVersion();
+    private final String VERSION;
     private static JavascriptExpansion instance;
     private boolean debug;
     private GithubScriptManager githubManager;
     private JavascriptExpansionCommands commands;
     private CommandMap commandMap;
+    private String argument_split;
 
     public JavascriptExpansion() {
         instance = this;
+        this.VERSION = getClass().getPackage().getImplementationVersion();
+        this.scripts = new HashSet<>();
+
         try {
             final Field field = Bukkit.getServer().getClass().getDeclaredField("commandMap");
             field.setAccessible(true);
             commandMap = (CommandMap) field.get(Bukkit.getServer());
         } catch (NoSuchFieldException | IllegalAccessException e) {
-            getPlaceholderAPI().getLogger().log(Level.SEVERE, "[JavaScript Expansion] An error occurred while accessing CommandMap.", e);
+            ExpansionUtils.errorLog("An error occurred while accessing CommandMap.", e, true);
         }
     }
 
@@ -77,24 +83,36 @@ public class JavascriptExpansion extends PlaceholderExpansion implements Cacheab
 
     @Override
     public boolean register() {
+        String defaultEngine = ExpansionUtils.DEFAULT_ENGINE;
+
         if (globalEngine == null) {
             try {
-                globalEngine = new ScriptEngineManager(null).getEngineByName(getString("engine", "nashorn"));
+                globalEngine = new ScriptEngineManager(null).getEngineByName(getString("engine", defaultEngine));
             } catch (NullPointerException ex) {
-                getPlaceholderAPI().getLogger().warning("[JavaScript Expansion] Javascript engine type was invalid! Defaulting to 'nashorn'");
+                ExpansionUtils.warnLog("Javascript engine type was invalid! Defaulting to '" + defaultEngine + "'", null);
-                globalEngine = new ScriptEngineManager(null).getEngineByName("nashorn");
+                globalEngine = new ScriptEngineManager(null).getEngineByName(defaultEngine);
             }
         }
 
+        argument_split = getString("argument_split", ",");
+        if (argument_split.equals("_")) {
+            argument_split = ",";
+            ExpansionUtils.warnLog("Underscore character will not be allowed for splitting. Defaulting to ',' for this", null);
+        }
+
         debug = (boolean) get("debug", false);
         config = new JavascriptPlaceholdersConfig(this);
-        config.loadPlaceholders();
+
+        int amountLoaded = config.loadPlaceholders();
+        ExpansionUtils.infoLog(amountLoaded + " script" + plural(amountLoaded) + " loaded!");
+
 
         if (debug) {
-            getPlaceholderAPI().getLogger().info("[JavaScript Expansion] Java version: " + System.getProperty("java.version"));
+            ExpansionUtils.infoLog("Java version: " + System.getProperty("java.version"));
+    
             final ScriptEngineManager manager = new ScriptEngineManager(null);
             final List<ScriptEngineFactory> factories = manager.getEngineFactories();
-            getPlaceholderAPI().getLogger().info("Displaying all script engine factories.");
+            ExpansionUtils.infoLog("Displaying all script engine factories.", false);
 
             for (ScriptEngineFactory factory : factories) {
                 System.out.println(factory.getEngineName());
@@ -107,7 +125,7 @@ public class JavascriptExpansion extends PlaceholderExpansion implements Cacheab
             }
         }
 
-        if ((Boolean) get("github_script_downloads", false)) {
+        if ((boolean) get("github_script_downloads", false)) {
             githubManager = new GithubScriptManager(this);
             githubManager.fetch();
         }
@@ -136,16 +154,16 @@ public class JavascriptExpansion extends PlaceholderExpansion implements Cacheab
     }
 
     @Override
-    public String onRequest(OfflinePlayer player, String identifier) {
+    public String onRequest(OfflinePlayer player, @NotNull String identifier) {
         if (player == null || scripts.size() == 0) {
             return "";
         }
 
         for (JavascriptPlaceholder script : scripts) {
             if (identifier.startsWith(script.getIdentifier() + "_")) {
-                identifier = identifier.replace(script.getIdentifier() + "_", "");
+                identifier = identifier.replaceFirst(script.getIdentifier() + "_", "");
 
-                return !identifier.contains(",") ? script.evaluate(player, identifier) : script.evaluate(player, identifier.split(","));
+                return !identifier.contains(argument_split) ? script.evaluate(player, identifier) : script.evaluate(player, identifier.split(argument_split));
             }
 
             if (identifier.equalsIgnoreCase(script.getIdentifier())) {
@@ -174,9 +192,9 @@ public class JavascriptExpansion extends PlaceholderExpansion implements Cacheab
         return true;
     }
 
-    public Set<JavascriptPlaceholder> getJSPlaceholders() {
+//    public Set<JavascriptPlaceholder> getJSPlaceholders() {
-        return scripts;
+//        return scripts;
-    }
+//    }
 
     public List<String> getLoadedIdentifiers() {
         return scripts.stream()
@@ -208,12 +226,13 @@ public class JavascriptExpansion extends PlaceholderExpansion implements Cacheab
         final Map<String, Object> defaults = new HashMap<>();
         defaults.put("engine", "javascript");
         defaults.put("debug", false);
+        defaults.put("argument_split", ",");
         defaults.put("github_script_downloads", false);
 
         return defaults;
     }
 
-    protected int reloadScripts() {
+    public int reloadScripts() {
         scripts.forEach(script -> {
             script.saveData();
             script.cleanup();
@@ -236,19 +255,48 @@ public class JavascriptExpansion extends PlaceholderExpansion implements Cacheab
         this.githubManager = manager;
     }
 
-    @SuppressWarnings("UnusedReturnValue")
+    private void unregisterCommand() {
-    private boolean unregisterCommand() {
+        if (commandMap != null && commands != null) {
-        return commandMap != null && commands != null && commands.unregister(commandMap);
+
+            try {
+                Class<? extends CommandMap> cmdMapClass = commandMap.getClass();
+                final Field f;
+
+                //Check if the server's in 1.13+
+                if (cmdMapClass.getSimpleName().equals("CraftCommandMap")) {
+                    f = cmdMapClass.getSuperclass().getDeclaredField("knownCommands");
+                } else {
+                    f = cmdMapClass.getDeclaredField("knownCommands");
+                }
+
+                f.setAccessible(true);
+                Map<String, Command> knownCmds = (Map<String, Command>) f.get(commandMap);
+                knownCmds.remove(commands.getName());
+                for (String alias : commands.getAliases()) {
+                    if (knownCmds.containsKey(alias) && knownCmds.get(alias).toString().contains(commands.getName())) {
+                        knownCmds.remove(alias);
+                    }
+                }
+
+            } catch (NoSuchFieldException | IllegalAccessException e) {
+                e.printStackTrace();
+            }
+
+            commands.unregister(commandMap);
+        }
     }
 
-    @SuppressWarnings("UnusedReturnValue")
+    private void registerCommand() {
-    private boolean registerCommand() {
         if (commandMap == null) {
-            return false;
+            return;
         }
 
         commands = new JavascriptExpansionCommands(this);
         commandMap.register("papi" + commands.getName(), commands);
-        return commands.isRegistered();
+        commands.isRegistered();
+    }
+
+    private String plural(final int amount) {
+        return amount > 1 ? "s" : "";
     }
 }

src/main/java/com/extendedclip/papi/expansion/javascript/JavascriptExpansionCommands.java

@@ -21,18 +21,16 @@
 package com.extendedclip.papi.expansion.javascript;
 
 import com.extendedclip.papi.expansion.javascript.cloud.GithubScript;
-import com.extendedclip.papi.expansion.javascript.cloud.GithubScriptManager;
+import com.extendedclip.papi.expansion.javascript.command.*;
-import me.clip.placeholderapi.PlaceholderAPIPlugin;
-import org.bukkit.Bukkit;
-import org.bukkit.ChatColor;
-import org.bukkit.OfflinePlayer;
 import org.bukkit.command.Command;
 import org.bukkit.command.CommandSender;
-import org.bukkit.entity.Player;
 import org.bukkit.util.StringUtil;
+import org.jetbrains.annotations.NotNull;
 
-import java.io.File;
+import java.util.ArrayList;
-import java.util.*;
+import java.util.Arrays;
+import java.util.Collections;
+import java.util.List;
 import java.util.stream.Collectors;
 
 public class JavascriptExpansionCommands extends Command {
@@ -40,6 +38,7 @@ public class JavascriptExpansionCommands extends Command {
     private final JavascriptExpansion expansion;
     private final String PERMISSION = "placeholderapi.js.admin";
     private final String command;
+    private List<ICommand> subCommands;
 
     public JavascriptExpansionCommands(JavascriptExpansion expansion) {
         super("jsexpansion");
@@ -47,11 +46,59 @@ public class JavascriptExpansionCommands extends Command {
         this.expansion = expansion;
         this.setDescription("Javascript expansion commands");
         this.setUsage("/" + command + " <args>");
+        this.setAliases(new ArrayList<>(Arrays.asList("javascriptexpansion", "jsexp")));
         this.setPermission(PERMISSION);
+        initCommands();
+    }
+
+    public void initCommands() {
+        if (subCommands != null) {
+            subCommands.clear();
+        }
+        subCommands = new ArrayList<>(Arrays.asList(
+                new GitCommand(expansion),
+                new ListCommand(expansion),
+                new ParseCommand(expansion),
+                new ReloadCommand(expansion),
+                new DebugCommand(expansion))
+        );
     }
 
     @Override
-    public List<String> tabComplete(CommandSender sender, String alias, String[] args) throws IllegalArgumentException {
+    public boolean execute(CommandSender sender, @NotNull String label, String[] args) {
+
+        if (!sender.hasPermission(PERMISSION)) {
+            ExpansionUtils.sendMsg(sender, "&cYou don't have permission to do that!");
+            return true;
+        }
+
+        if (args.length == 0) {
+            sendHelp(sender);
+            return true;
+        }
+
+        ICommand command = null;
+        for (ICommand icmd : subCommands) {
+            if (icmd.getAlias().equalsIgnoreCase(args[0])) {
+                command = icmd;
+                command.command = getName();
+                break;
+            }
+        }
+
+        if (command == null) {
+            ExpansionUtils.sendMsg(sender, "&cInvalid expansion sub-command! Type&f /" + getName() + " &cfor help");
+            return true;
+        }
+
+        command.execute(sender, sliceFirstArr(args));
+
+        return true;
+    }
+
+    //TODO: This thing here has to be organized thoroughly later...
+    @Override
+    public List<String> tabComplete(CommandSender sender, @NotNull String alias, String[] args) throws IllegalArgumentException {
         if (!sender.hasPermission(PERMISSION)) {
             return Collections.emptyList();
         }
@@ -88,207 +135,30 @@ public class JavascriptExpansionCommands extends Command {
         return Collections.emptyList();
     }
 
-    @Override
+    private void sendHelp(CommandSender sender) {
-    public boolean execute(CommandSender sender, String label, String[] args) {
+        ExpansionUtils.sendMsg(sender,
-        if (!sender.hasPermission(PERMISSION)) {
+                "&eJavascript expansion &7v: &f" + expansion.getVersion(),
-            msg(sender, "&cYou don't have permission to do that!");
+                "&eCreated by: &f" + expansion.getAuthor(),
-            return true;
+                "&eWiki: &fhttps://github.com/PlaceholderAPI/Javascript-Expansion/wiki",
-        }
+                "&r",
+                "&e/" + command + " reload &7- &fReload your javascripts without reloading PlaceholderAPI.",
+                "&e/" + command + " list &7- &fList loaded script identifiers.",
+                "&e/" + command + " parse [me/player] [code] &7- &fTest JavaScript code in chat.",
+                "&e/" + command + " debug [savedata/loaddata] [identifier] &7- &fTest JavaScript code in chat."
+        );
 
-        if (args.length == 0) {
+        if (expansion.getGithubScriptManager() != null) {
-            msg(sender,
+            ExpansionUtils.sendMsg(sender,
-                    "&eJavascript expansion &7v: &f" + expansion.getVersion(),
+                    "&e/" + command + " git refresh &7- &fRefresh available Github scripts",
-                    "&eCreated by: &f" + expansion.getAuthor(),
+                    "&e/" + command + " git download [name] &7- &fDownload a script from the js expansion github.",
-                    "&eWiki: &fhttps://github.com/PlaceholderAPI/Javascript-Expansion/wiki",
+                    "&e/" + command + " git list &7- &fList available scripts in the js expansion github.",
-                    "&r",
+                    "&e/" + command + " git info [name] &7- &fGet the description and url of a specific script."
-                    "&e/" + command + " reload &7- &fReload your javascripts without reloading PlaceholderAPI.",
-                    "&e/" + command + " list &7- &fList loaded script identifiers.",
-                    "&e/" + command + " parse [me/player] [code] &7- &fTest JavaScript code in chat."
             );
-
-            if (expansion.getGithubScriptManager() != null) {
-                msg(sender,
-                        "&e/" + command + " git refresh &7- &fRefresh available Github scripts",
-                        "&e/" + command + " git download [name] &7- &fDownload a script from the js expansion github.",
-                        "&e/" + command + " git list &7- &fList available scripts in the js expansion github.",
-                        "&e/" + command + " git info [name] &7- &fGet the description and url of a specific script."
-                );
-            }
-
-            return true;
-        }
-
-        switch (args[0].toLowerCase()) {
-            case "git": {
-                if (expansion.getGithubScriptManager() == null) {
-                    msg(sender, "&cThis feature is disabled in the PlaceholderAPI config.");
-                    return true;
-                }
-
-                if (args.length < 2) {
-                    msg(sender, "&cIncorrect usage! Type '&f/" + command + "&c' for more help.");
-                    return true;
-                }
-
-                final GithubScriptManager manager = expansion.getGithubScriptManager();
-
-                switch (args[1].toLowerCase()) {
-                    case "refresh": {
-                        expansion.getGithubScriptManager().fetch();
-                        msg(sender, "&aFetching available scripts... Check back in a sec!");
-                        return true;
-                    }
-
-                    case "list": {
-                        final List<GithubScript> availableScripts = manager.getAvailableScripts();
-                        final Set<String> scripts = availableScripts.stream().map(GithubScript::getName).collect(Collectors.toSet());
-
-                        msg(sender, availableScripts.size() + " &escript" + plural(availableScripts.size()) + " available on Github.", String.join(", ", scripts));
-                        return true;
-                    }
-
-                    case "info": {
-                        if (args.length < 3) {
-                            msg(sender, "&cIncorrect usage! &f/" + command + " git info [name]");
-                            return true;
-                        }
-
-                        final GithubScript script = manager.getScript(args[2]);
-
-                        if (script == null) {
-                            msg(sender, "&cThe script &f" + args[2] + " &cdoes not exist!");
-                            return true;
-                        }
-
-                        msg(sender,
-                                "&eName: &f" + script.getName(),
-                                "&eVersion: &f" + script.getVersion(),
-                                "&eDescription: &f" + script.getDescription(),
-                                "&eAuthor: &f" + script.getAuthor(),
-                                "&eSource URL: &f" + script.getUrl()
-                        );
-                        return true;
-                    }
-
-                    case "download": {
-                        if (args.length < 3) {
-                            msg(sender, "&cIncorrect usage! &f/" + command + " git download [name]");
-                            return true;
-                        }
-
-                        final GithubScript script = manager.getScript(args[2]);
-
-                        if (script == null) {
-                            msg(sender, "&cThe script &f" + args[2] + " &cdoes not exist!");
-                            return true;
-                        }
-
-                        if (new File(expansion.getGithubScriptManager().getJavascriptsFolder(), script.getName() + ".js").exists()) {
-                            msg(sender, "&cCould not download " + script.getName() + " because a file with the same name already exist in the javascripts folder.");
-                            return true;
-                        }
-
-                        manager.downloadScript(script);
-                        msg(sender, "&aDownload started. &eCheck the scripts folder in a moment...");
-                        return true;
-                    }
-
-                    case "enabled":
-                        if (args.length < 3) {
-                            msg(sender, "&cIncorrect usage! &f/" + command + " git enabled [true/false]");
-                            return true;
-                        }
-
-                        final boolean enabled = Boolean.parseBoolean(args[2]);
-                        final PlaceholderAPIPlugin papi = expansion.getPlaceholderAPI();
-
-                        papi.getConfig().set("expansions." + this.getName() + ".github_script_downloads", enabled);
-                        papi.saveConfig();
-                        papi.reloadConfig();
-
-                        if (!enabled) {
-                            if (expansion.getGithubScriptManager() != null) {
-                                expansion.getGithubScriptManager().clear();
-                                expansion.setGithubScriptManager(null);
-                            }
-                        } else {
-                            if (expansion.getGithubScriptManager() == null) {
-                                expansion.setGithubScriptManager(new GithubScriptManager(expansion));
-                            }
-                            expansion.getGithubScriptManager().fetch();
-                        }
-
-                        msg(sender, "&6Git script downloads set to: &e" + enabled);
-                        return true;
-
-                    default: {
-                        msg(sender, "&cIncorrect usage! Type '&f/" + command + "&c' for more help.");
-                        return true;
-                    }
-                }
-            }
-
-            case "list": {
-                final List<String> loaded = expansion.getLoadedIdentifiers();
-                msg(sender,
-                        loaded.size() + " &7script" + plural(loaded.size()) + " loaded.",
-                        String.join(", ", loaded)
-                );
-                return true;
-            }
-
-            case "parse": {
-                if (args.length < 3) {
-                    msg(sender, "&cIncorrect usage! &f/" + command + " parse [me/player] [code]");
-                    return true;
-                }
-
-                final String script = String.join(" ", Arrays.copyOfRange(args, 2, args.length));
-                final JavascriptPlaceholder placeholder = new JavascriptPlaceholder(expansion.getGlobalEngine(), "parse-command", String.join(" ", script));
-
-                if ("me".equalsIgnoreCase(args[1])) {
-                    if (!(sender instanceof Player)) {
-                        msg(sender, "&cOnly players can run this command!");
-                        return true;
-                    }
-
-                    sender.sendMessage(placeholder.evaluate((Player) sender));
-                    return true;
-                }
-
-                final OfflinePlayer player = Bukkit.getOfflinePlayer(args[1]);
-
-                if (!player.hasPlayedBefore() || player.getName() == null) {
-                    msg(sender, "&cUnknown player " + args[1]);
-                    return true;
-                }
-
-                sender.sendMessage(placeholder.evaluate(player));
-                return true;
-            }
-
-            case "reload": {
-                msg(sender, "&aJavascriptExpansion reloading...");
-                final int scripts = expansion.reloadScripts();
-                msg(sender, scripts + " &7script" + plural(scripts) + " loaded");
-                return true;
-            }
-
-            default: {
-                return true;
-            }
         }
     }
 
-    private String plural(final int amount) {
+    public String[] sliceFirstArr(String[] args) {
-        return amount > 1 ? "s" : "";
+        return Arrays.stream(args).skip(1).toArray(String[]::new);
     }
 
-    public void msg(CommandSender sender, String... text) {
-        if (text == null) {
-            return;
-        }
-
-        sender.sendMessage(ChatColor.translateAlternateColorCodes('&', Arrays.stream(text).filter(Objects::nonNull).collect(Collectors.joining("\n"))));
-    }
 }

src/main/java/com/extendedclip/papi/expansion/javascript/JavascriptPlaceholder.java

@@ -33,51 +33,66 @@ import javax.script.ScriptException;
 import java.io.File;
 import java.io.IOException;
 import java.util.Set;
-import java.util.logging.Level;
+import java.util.regex.Matcher;
+import java.util.regex.Pattern;
 
 public class JavascriptPlaceholder {
 
-    private final String DIRECTORY = PlaceholderAPIPlugin.getInstance().getDataFolder() + "/javascripts/javascript_data";
     private final ScriptEngine engine;
     private final String identifier;
     private final String script;
     private ScriptData scriptData;
     private final File dataFile;
     private YamlConfiguration yaml;
+    private final Pattern pattern;
 
+    @SuppressWarnings("ResultOfMethodCallIgnored")
     public JavascriptPlaceholder(ScriptEngine engine, String identifier, String script) {
         Validate.notNull(engine, "ScriptEngine can not be null");
         Validate.notNull(identifier, "Identifier can not be null");
         Validate.notNull(script, "Script can not be null");
 
+        String dir = PlaceholderAPIPlugin.getInstance().getDataFolder() + "/javascripts/javascript_data";
         this.engine = engine;
         this.identifier = identifier;
         this.script = script;
-        final File directory = new File(DIRECTORY);
+        final File directory = new File(dir);
 
         if (!directory.exists()) {
             directory.mkdirs();
         }
 
+        pattern = Pattern.compile("//.*|/\\*[\\S\\s]*?\\*/|%([^%]+)%");
         scriptData = new ScriptData();
         dataFile = new File(directory, identifier + "_data.yml");
         engine.put("Data", scriptData);
+        engine.put("DataVar", scriptData.getData());
         engine.put("BukkitServer", Bukkit.getServer());
         engine.put("Expansion", JavascriptExpansion.getInstance());
         engine.put("Placeholder", this);
         engine.put("PlaceholderAPI", PlaceholderAPI.class);
+
     }
 
     public String getIdentifier() {
         return identifier;
     }
 
-    public String getScript() {
-        return script;
-    }
-
     public String evaluate(OfflinePlayer player, String... args) {
-        String exp = PlaceholderAPI.setPlaceholders(player, script);
+
+        // A checker to deny all placeholders inside comment codes
+        Matcher matcher = pattern.matcher(script);
+        StringBuffer buffer = new StringBuffer();
+
+        while (matcher.find()) {
+            String matched = matcher.group(0);
+            if (!matched.startsWith("%") || matched.startsWith("/*") || matched.startsWith("//")) continue;
+
+            matcher.appendReplacement(buffer, PlaceholderAPI.setPlaceholders(player, matched));
+        }
+
+        matcher.appendTail(buffer);
+        String exp = buffer.toString();
 
         try {
             String[] arguments = null;
@@ -89,7 +104,6 @@ public class JavascriptPlaceholder {
                     if (args[i] == null || args[i].isEmpty()) {
                         continue;
                     }
-
                     arguments[i] = PlaceholderAPI.setBracketPlaceholders(player, args[i]);
                 }
             }
@@ -108,15 +122,20 @@ public class JavascriptPlaceholder {
             engine.put("OfflinePlayer", player);
             Object result = engine.eval(exp);
             return result != null ? PlaceholderAPI.setBracketPlaceholders(player, result.toString()) : "";
-        } catch (ScriptException ex) {
-            PlaceholderAPIPlugin.getInstance().getLogger().log(Level.SEVERE, "[JavaScript] An error occurred while executing the script '" + identifier + "'", ex);
-        }
 
-        return "Script error! (check console)";
+        } catch (ScriptException ex) {
+            ExpansionUtils.errorLog("An error occurred while executing the script '" + identifier + "':\n\t" + ex.getMessage(), null);
+        } catch (ArrayIndexOutOfBoundsException ex) {
+            ExpansionUtils.errorLog("Argument out of bound while executing script '" + identifier + "':\n\t" + ex.getMessage(), null);
+        }
+        return "Script error (check console)";
+    }
+
+    public String getScript() {
+        return script;
     }
 
     public ScriptData getData() {
-        // this should never be null but just in case setData(null) is called
         if (scriptData == null) {
             scriptData = new ScriptData();
         }
@@ -127,6 +146,7 @@ public class JavascriptPlaceholder {
         this.scriptData = data;
     }
 
+    @SuppressWarnings("ResultOfMethodCallIgnored")
     public boolean loadData() {
         yaml = new YamlConfiguration();
         dataFile.getParentFile().mkdirs();
@@ -135,7 +155,7 @@ public class JavascriptPlaceholder {
             try {
                 dataFile.createNewFile();
             } catch (IOException e) {
-                PlaceholderAPIPlugin.getInstance().getLogger().log(Level.SEVERE, "[JavaScript Expansion] An error occurred while creating data file for " + getIdentifier(), e);
+                ExpansionUtils.errorLog("An error occurred while creating data file for " + getIdentifier(), e);
                 return false;
             }
         }
@@ -143,7 +163,7 @@ public class JavascriptPlaceholder {
         try {
             yaml.load(dataFile);
         } catch (IOException | InvalidConfigurationException e) {
-            PlaceholderAPIPlugin.getInstance().getLogger().log(Level.SEVERE, "[JavaScript Expansion] An error occurred while loading for " + getIdentifier(), e);
+            ExpansionUtils.errorLog("An error occurred while loading for " + getIdentifier(), e);
             return false;
         }
 
@@ -153,35 +173,32 @@ public class JavascriptPlaceholder {
             return false;
         }
 
-        if (scriptData == null) {
+        if (scriptData == null)
             scriptData = new ScriptData();
-        } else {
+        else scriptData.clear();
-            scriptData.clear();
-        }
 
-        keys.forEach(key -> scriptData.set(key, yaml.get(key)));
+        keys.forEach(key -> scriptData.set(key, ExpansionUtils.ymlToJavaObj(yaml.get(key))));
 
         if (!scriptData.isEmpty()) {
             this.setData(scriptData);
             return true;
         }
-
         return false;
     }
 
-    public boolean saveData() {
+    public void saveData() {
         if (scriptData == null || scriptData.isEmpty() || yaml == null) {
-            return false;
+            return;
         }
 
-        scriptData.getData().forEach((key, value) -> yaml.set(key, value));
+        // Function for merging JSON.
+        // TODO: This will be removed along with Nashorn in a later future
+        scriptData.getData().forEach((key, value) -> yaml.set(key, ExpansionUtils.jsonToJava(value)));
 
         try {
             yaml.save(dataFile);
-            return true;
         } catch (IOException e) {
-            PlaceholderAPIPlugin.getInstance().getLogger().log(Level.SEVERE, "[JavaScript Expansion] An error occurred while saving data for " + getIdentifier(), e);
+            ExpansionUtils.errorLog(ExpansionUtils.PREFIX + "An error occurred while saving data for " + getIdentifier(), e);
-            return false;
         }
     }
 
@@ -190,7 +207,6 @@ public class JavascriptPlaceholder {
             this.scriptData.clear();
             this.scriptData = null;
         }
-
         this.yaml = null;
     }
 }

src/main/java/com/extendedclip/papi/expansion/javascript/JavascriptPlaceholdersConfig.java

@@ -27,19 +27,15 @@ import org.bukkit.configuration.file.YamlConfiguration;
 import javax.script.ScriptEngine;
 import javax.script.ScriptEngineManager;
 import java.io.File;
-import java.io.FileNotFoundException;
 import java.io.IOException;
-import java.util.Scanner;
+import java.nio.file.Files;
-import java.util.logging.Level;
+import java.util.List;
 
 public class JavascriptPlaceholdersConfig {
 
-    private JavascriptExpansion ex;
+    private final JavascriptExpansion ex;
-
+    private final PlaceholderAPIPlugin plugin;
-    private PlaceholderAPIPlugin plugin;
-
     private FileConfiguration config;
-
     private File file;
 
     public JavascriptPlaceholdersConfig(JavascriptExpansion ex) {
@@ -83,31 +79,30 @@ public class JavascriptPlaceholdersConfig {
 
         if (config.getKeys(false).isEmpty()) {
             config.set("example.file", "example.js");
-            config.set("example.engine", "nashorn");
+            config.set("example.engine", ExpansionUtils.DEFAULT_ENGINE);
         }
 
         save();
     }
 
     public FileConfiguration load() {
-        if (config == null) {
+        if (config == null) reload();
-            reload();
-        }
         return config;
     }
 
     public void save() {
-        if ((config == null) || (file == null)) {
+        if (config == null || file == null) {
             return;
         }
 
         try {
             load().save(file);
         } catch (IOException ex) {
-            plugin.getLogger().log(Level.SEVERE, "Could not save to " + file, ex);
+            ExpansionUtils.warnLog("Could not save to " + file, ex);
         }
     }
 
+    @SuppressWarnings("ResultOfMethodCallIgnored")
     public int loadPlaceholders() {
         if (config == null || config.getKeys(false).isEmpty()) {
             return 0;
@@ -118,55 +113,56 @@ public class JavascriptPlaceholdersConfig {
         try {
             if (!directory.exists()) {
                 directory.mkdirs();
-                plugin.getLogger().info("[JavaScript Expansion] Creating directory: " + directory.getPath());
+                ExpansionUtils.infoLog("Creating directory: " + directory.getPath());
             }
         } catch (SecurityException e) {
-            plugin.getLogger().log(Level.SEVERE, "[JavaScript Expansion] Could not create directory: " + directory.getPath(), e);
+            ExpansionUtils.errorLog("Could not create directory: " + directory.getPath(), e);
         }
 
         for (String identifier : config.getKeys(false)) {
-            if (!config.contains(identifier + ".file") || config.getString(identifier + ".file") == null) {
+            final String fileName = config.getString(identifier + ".file");
-                plugin.getLogger().warning("[JavaScript Expansion] Javascript placeholder: " + identifier + " does not have a file specified");
+            if (!config.contains(identifier + ".file") || fileName == null) {
+                ExpansionUtils.warnLog("Javascript placeholder: " + identifier + " does not have a file specified", null);
                 continue;
             }
 
-            File scriptFile = new File(plugin.getDataFolder() + "/javascripts", config.getString(identifier + ".file"));
+            final File scriptFile = new File(plugin.getDataFolder() + "/javascripts", fileName);
 
             if (!scriptFile.exists()) {
-                plugin.getLogger().info("[JavaScript Expansion] " +scriptFile.getName() + " does not exist. Creating file...");
+                ExpansionUtils.infoLog(scriptFile.getName() + " does not exist. Creating one for you...");
 
                 try {
                     scriptFile.createNewFile();
-                    plugin.getLogger().info("[JavaScript Expansion] " + scriptFile.getName() + " created! Add your javascript to this file and use '/jsexpansion reload' to load it!");
+                    ExpansionUtils.infoLog(scriptFile.getName() + " created! Add your javascript to this file and use '/jsexpansion reload' to load it!");
                 } catch (IOException e) {
-                    plugin.getLogger().log(Level.SEVERE, "[JavaScript Expansion] An error occurred while creating " + scriptFile.getName(), e);
+                    ExpansionUtils.errorLog("An error occurred while creating " + scriptFile.getName(), e);
                 }
 
                 continue;
             }
 
-            String script = getContents(scriptFile);
+            final String script = getContents(scriptFile);
 
             if (script == null || script.isEmpty()) {
-                plugin.getLogger().warning("[JavaScript Expansion] File: " + scriptFile.getName() + " for javascript placeholder: " + identifier + " is empty");
+                ExpansionUtils.warnLog("File: " + scriptFile.getName() + " for Javascript placeholder: " + identifier + " is empty", null);
                 continue;
             }
 
             ScriptEngine engine;
-
             if (!config.contains(identifier + ".engine")) {
                 engine = ex.getGlobalEngine();
+                ExpansionUtils.warnLog("ScriptEngine type for javascript placeholder " + identifier + " isn't initialized! Defaulting to global", null);
             } else {
                 try {
-                    engine = new ScriptEngineManager(null).getEngineByName(config.getString(identifier + ".engine", "nashorn"));
+                   engine = new ScriptEngineManager(null).getEngineByName(config.getString(identifier + ".engine", "nashorn"));
                 } catch (NullPointerException e) {
-                    plugin.getLogger().warning("[JavaScript Expansion] ScriptEngine type for javascript placeholder: " + identifier + " is invalid! Defaulting to global");
+                    ExpansionUtils.warnLog("ScriptEngine type for javascript placeholder: " + identifier + " is invalid! Defaulting to global", null);
                     engine = ex.getGlobalEngine();
                 }
             }
 
             if (engine == null) {
-                plugin.getLogger().warning("[JavaScript Expansion] Failed to set ScriptEngine for javascript placeholder: " + identifier);
+                ExpansionUtils.warnLog("Failed to set ScriptEngine for javascript placeholder: " + identifier, null);
                 continue;
             }
 
@@ -175,15 +171,14 @@ public class JavascriptPlaceholdersConfig {
 
             if (added) {
                 if (placeholder.loadData()) {
-                    plugin.getLogger().info("[JavaScript Expansion] Loaded data for javascript placeholder: " + identifier);
+                    ExpansionUtils.infoLog("Data for placeholder &b" + identifier + "&r has been loaded");
                 }
 
-                plugin.getLogger().info("[JavaScript Expansion] %javascript_" + identifier + "% has been loaded!");
+                ExpansionUtils.infoLog("Placeholder &b%javascript_" + identifier + "%&r has been loaded");
             } else {
-                plugin.getLogger().warning("[JavaScript Expansion] Javascript  placeholder %javascript_" + identifier + "% is a duplicate!");
+                ExpansionUtils.warnLog("Javascript placeholder %javascript_" + identifier + "% is duplicated!", null);
             }
         }
-
         return ex.getAmountLoaded();
     }
 
@@ -191,31 +186,14 @@ public class JavascriptPlaceholdersConfig {
         final StringBuilder sb = new StringBuilder();
 
         try {
-            Scanner scanner = new Scanner(file);
+            List<String> lines = Files.readAllLines(file.toPath());
-
+            lines.forEach((line) -> sb.append(line).append("\n"));
-            while (scanner.hasNextLine()) {
+        } catch (IOException e) {
-                String line = scanner.nextLine();
-
-                if (line == null || line.isEmpty()) {
-                    continue;
-                }
-
-                line = line.trim();
-
-                /* temp fix for single line comments
-                 * doesnt solve every case though..
-                 * lines that start with code and may have a comment afterward still screw stuff up...
-                 */
-                if (line.startsWith("//")) {
-                    continue;
-                }
-                sb.append(line).append(" ");
-            }
-            scanner.close();
-        } catch (FileNotFoundException e) {
-            e.printStackTrace();
             return null;
         }
+
+//        This thing is just in case, who needs it now..
+//        return sb.toString().replaceAll("//.*|/\\*(?:[^/*|*/]|\\\\.|\\n\\*)*\\*/", "");
         return sb.toString();
     }
 }

src/main/java/com/extendedclip/papi/expansion/javascript/ScriptData.java

@@ -56,7 +56,11 @@ public class ScriptData {
     }
 
     public void set(String key, Object value) {
-        map.put(key, value);
+        map.put(key, ExpansionUtils.jsonToJava(value));
+    }
+
+    public void setIfNull(String key, Object value) {
+        map.putIfAbsent(key, ExpansionUtils.jsonToJava(value));
     }
 
     public boolean isEmpty() {

src/main/java/com/extendedclip/papi/expansion/javascript/cloud/GithubScriptManager.java

@@ -20,9 +20,12 @@
  */
 package com.extendedclip.papi.expansion.javascript.cloud;
 
+import com.extendedclip.papi.expansion.javascript.ExpansionUtils;
 import com.extendedclip.papi.expansion.javascript.JavascriptExpansion;
+import com.extendedclip.papi.expansion.javascript.JavascriptPlaceholdersConfig;
 import com.google.gson.Gson;
 import com.google.gson.reflect.TypeToken;
+import jdk.nashorn.api.scripting.ScriptUtils;
 import org.bukkit.Bukkit;
 
 import java.io.*;
@@ -35,7 +38,7 @@ import java.util.stream.Collectors;
 
 public class GithubScriptManager {
 
-    private JavascriptExpansion expansion;
+    private final JavascriptExpansion expansion;
     private final String JAVASCRIPTS_FOLDER;
     private List<GithubScript> availableScripts;
     private final String MASTER_LIST_URL = "https://raw.githubusercontent.com/PlaceholderAPI/Javascript-Expansion/master/scripts/master_list.json";
@@ -65,7 +68,6 @@ public class GithubScriptManager {
         });
     }
 
-    @SuppressWarnings("ResultOfMethodCallIgnored")
     public void downloadScript(GithubScript script) {
         Bukkit.getScheduler().runTaskAsynchronously(expansion.getPlaceholderAPI(), () -> {
             final List<String> contents = read(script.getUrl());
@@ -77,13 +79,16 @@ public class GithubScriptManager {
             try (final PrintStream out = new PrintStream(new FileOutputStream(new File(JAVASCRIPTS_FOLDER, script.getName() + ".js")))) {
                 contents.forEach(out::println);
             } catch (FileNotFoundException e) {
-                expansion.getPlaceholderAPI().getLogger().log(Level.SEVERE, "An error occurred while downloading " + script.getName(), e);
+                ExpansionUtils.errorLog("An error occurred while downloading " + script.getName(), e);
                 return;
             }
 
             Bukkit.getScheduler().runTask(expansion.getPlaceholderAPI(), () -> {
-                expansion.getConfig().load().set(script.getName() + ".file", script.getName() + ".js");
+                JavascriptPlaceholdersConfig config = expansion.getConfig();
-                expansion.getConfig().save();
+                config.load().set(script.getName() + ".file", script.getName() + ".js");
+                config.load().set(script.getName() + ".engine", "javascript");
+
+                config.save();
             });
         });
     }
@@ -97,14 +102,6 @@ public class GithubScriptManager {
 
         try (BufferedReader reader = new BufferedReader(new InputStreamReader(new URL(url).openStream()))) {
             lines.addAll(reader.lines().filter(Objects::nonNull).collect(Collectors.toList()));
-            /*
-            String inputLine;
-
-            while ((inputLine = reader.readLine()) != null) {
-                lines.add(inputLine);
-            }
-
-             */
         } catch (Exception ex) {
             ex.printStackTrace();
         }

src/main/java/com/extendedclip/papi/expansion/javascript/command/DebugCommand.java

@@ -0,0 +1,50 @@
+package com.extendedclip.papi.expansion.javascript.command;
+
+import com.extendedclip.papi.expansion.javascript.ExpansionUtils;
+import com.extendedclip.papi.expansion.javascript.JavascriptExpansion;
+import com.extendedclip.papi.expansion.javascript.JavascriptPlaceholder;
+import org.bukkit.command.CommandSender;
+import org.jetbrains.annotations.NotNull;
+
+import java.util.Arrays;
+import java.util.stream.Collectors;
+
+public class DebugCommand extends ICommand {
+
+    private final JavascriptExpansion expansion;
+
+    public DebugCommand(JavascriptExpansion expansion) {
+        this.expansion = expansion;
+    }
+
+    @Override
+    public void execute(CommandSender sender, String[] args) {
+        if (args.length < 2) {
+            ExpansionUtils.sendMsg(sender, "&cIncorrect usage! Type '&f/" + command + "&c' for more help.");
+            return;
+        }
+
+        JavascriptPlaceholder jsp = expansion.getJSPlaceholder(getIdentifier(args));
+        if (jsp == null) {
+            ExpansionUtils.sendMsg(sender, "&cInvalid javascript identifier! Please re-check your typo");
+            return;
+        }
+
+        if (args[0].equals("savedata")) {
+            jsp.saveData();
+            ExpansionUtils.sendMsg(sender, "&aJavascript data '" + args[1] + "' successfully saved");
+        } else if (args[0].equals("loaddata")) {
+            jsp.loadData();
+            ExpansionUtils.sendMsg(sender, "&aJavascript data '" + args[1] + "' successfully loaded");
+        }
+    }
+
+    public String getIdentifier(String[] args) {
+        return Arrays.stream(args).skip(1).collect(Collectors.joining(" "));
+    }
+
+    @Override
+    public @NotNull String getAlias() {
+        return "debug";
+    }
+}

src/main/java/com/extendedclip/papi/expansion/javascript/command/GitCommand.java

@@ -0,0 +1,142 @@
+package com.extendedclip.papi.expansion.javascript.command;
+
+import com.extendedclip.papi.expansion.javascript.ExpansionUtils;
+import com.extendedclip.papi.expansion.javascript.JavascriptExpansion;
+import com.extendedclip.papi.expansion.javascript.cloud.GithubScript;
+import com.extendedclip.papi.expansion.javascript.cloud.GithubScriptManager;
+import me.clip.placeholderapi.PlaceholderAPIPlugin;
+import org.bukkit.command.CommandSender;
+import org.jetbrains.annotations.NotNull;
+
+import java.io.File;
+import java.util.List;
+import java.util.Set;
+import java.util.stream.Collectors;
+
+public class GitCommand extends ICommand {
+
+    private final JavascriptExpansion expansion;
+
+    public GitCommand(JavascriptExpansion expansion) {
+        this.expansion = expansion;
+    }
+
+    @Override
+    public void execute(CommandSender sender, String[] args) {
+
+        if (expansion.getGithubScriptManager() == null) {
+            ExpansionUtils.sendMsg(sender, "&cThis feature is disabled in the PlaceholderAPI config.");
+            return;
+        }
+
+        if (args.length < 1) {
+            ExpansionUtils.sendMsg(sender, "&cIncorrect usage! Type '&f/" + command + "&c' for more help.");
+            return;
+        }
+
+        final GithubScriptManager manager = expansion.getGithubScriptManager();
+
+        switch (args[0].toLowerCase()) {
+            case "refresh": {
+                expansion.getGithubScriptManager().fetch();
+                ExpansionUtils.sendMsg(sender, "&aFetching available scripts... Check back in a sec!");
+                return;
+            }
+
+            case "list": {
+                final List<GithubScript> availableScripts = manager.getAvailableScripts();
+                final Set<String> scripts = availableScripts.stream().map(GithubScript::getName).collect(Collectors.toSet());
+
+                ExpansionUtils.sendMsg(sender, availableScripts.size() + " &escript" + plural(availableScripts.size()) + " available on Github.", String.join(", ", scripts));
+                return;
+            }
+
+            case "info": {
+                if (args.length < 2) {
+                    ExpansionUtils.sendMsg(sender, "&cIncorrect usage! &f/" + command + " git info [name]");
+                    return;
+                }
+
+                final GithubScript script = manager.getScript(args[1]);
+
+                if (script == null) {
+                    ExpansionUtils.sendMsg(sender, "&cThe script &f" + args[1] + " &cdoes not exist!");
+                    return;
+                }
+
+                ExpansionUtils.sendMsg(sender,
+                        "&eName: &f" + script.getName(),
+                        "&eVersion: &f" + script.getVersion(),
+                        "&eDescription: &f" + script.getDescription(),
+                        "&eAuthor: &f" + script.getAuthor(),
+                        "&eSource URL: &f" + script.getUrl()
+                );
+                return;
+            }
+
+            case "download": {
+                if (args.length < 2) {
+                    ExpansionUtils.sendMsg(sender, "&cIncorrect usage! &f/" + command + " git download [name]");
+                    return;
+                }
+
+                final GithubScript script = manager.getScript(args[1]);
+
+                if (script == null) {
+                    ExpansionUtils.sendMsg(sender, "&cThe script &f" + args[1] + " &cdoes not exist!");
+                    return;
+                }
+
+                if (new File(expansion.getGithubScriptManager().getJavascriptsFolder(), script.getName() + ".js").exists()) {
+                    ExpansionUtils.sendMsg(sender, "&cCould not download " + script.getName() + " because a file with the same name already exist in the javascripts folder.");
+                    return;
+                }
+
+                manager.downloadScript(script);
+                ExpansionUtils.sendMsg(sender, "&aDownload started. &eCheck the scripts folder in a moment...");
+                return;
+            }
+
+            case "enabled":
+                if (args.length < 2) {
+                    ExpansionUtils.sendMsg(sender, "&cIncorrect usage! &f/jsexpansion git enabled [true/false]");
+                    return;
+                }
+
+                final boolean enabled = Boolean.parseBoolean(args[1]);
+                final PlaceholderAPIPlugin papi = expansion.getPlaceholderAPI();
+
+                papi.getConfig().set("expansions." + command + ".github_script_downloads", enabled);
+                papi.saveConfig();
+                papi.reloadConfig();
+
+                if (!enabled) {
+                    if (expansion.getGithubScriptManager() != null) {
+                        expansion.getGithubScriptManager().clear();
+                        expansion.setGithubScriptManager(null);
+                    }
+                } else {
+                    if (expansion.getGithubScriptManager() == null) {
+                        expansion.setGithubScriptManager(new GithubScriptManager(expansion));
+                    }
+                    expansion.getGithubScriptManager().fetch();
+                }
+
+                ExpansionUtils.sendMsg(sender, "&6Git script downloads set to: &e" + enabled);
+                return;
+
+            default: {
+                ExpansionUtils.sendMsg(sender, "&cIncorrect usage! Type '&f/" + command + "&c' for more help.");
+            }
+        }
+    }
+
+    @Override
+    public @NotNull String getAlias() {
+        return "git";
+    }
+    
+    private String plural(final int amount) {
+        return amount > 1 ? "s" : "";
+    }
+}

src/main/java/com/extendedclip/papi/expansion/javascript/command/ICommand.java

@@ -0,0 +1,20 @@
+package com.extendedclip.papi.expansion.javascript.command;
+
+import com.extendedclip.papi.expansion.javascript.ExpansionUtils;
+import org.bukkit.ChatColor;
+import org.bukkit.command.CommandSender;
+import org.jetbrains.annotations.NotNull;
+
+import java.util.Arrays;
+import java.util.Objects;
+import java.util.stream.Collectors;
+
+public abstract class ICommand {
+
+    public String command;
+
+    public abstract void execute(CommandSender sender, String[] args);
+
+    public abstract @NotNull String getAlias();
+
+}

src/main/java/com/extendedclip/papi/expansion/javascript/command/ListCommand.java

@@ -0,0 +1,35 @@
+package com.extendedclip.papi.expansion.javascript.command;
+
+import com.extendedclip.papi.expansion.javascript.ExpansionUtils;
+import com.extendedclip.papi.expansion.javascript.JavascriptExpansion;
+import org.bukkit.command.CommandSender;
+import org.jetbrains.annotations.NotNull;
+
+import java.util.List;
+
+public class ListCommand extends ICommand {
+
+    private final JavascriptExpansion expansion;
+
+    public ListCommand(JavascriptExpansion expansion) {
+        this.expansion = expansion;
+    }
+
+    @Override
+    public void execute(CommandSender sender, String[] args) {
+
+        final List<String> loaded = expansion.getLoadedIdentifiers();
+        ExpansionUtils.sendMsg(sender,loaded.size() + " &7script" + plural(loaded.size()) + " loaded.",
+                String.join(", ", loaded));
+    }
+
+    @Override
+    @NotNull
+    public String getAlias() {
+        return "list";
+    }
+
+    private String plural(final int amount) {
+        return amount > 1 ? "s" : "";
+    }
+}

src/main/java/com/extendedclip/papi/expansion/javascript/command/ParseCommand.java

@@ -0,0 +1,57 @@
+package com.extendedclip.papi.expansion.javascript.command;
+
+import com.extendedclip.papi.expansion.javascript.ExpansionUtils;
+import com.extendedclip.papi.expansion.javascript.JavascriptExpansion;
+import com.extendedclip.papi.expansion.javascript.JavascriptPlaceholder;
+import org.bukkit.Bukkit;
+import org.bukkit.OfflinePlayer;
+import org.bukkit.command.CommandSender;
+import org.bukkit.entity.Player;
+import org.jetbrains.annotations.NotNull;
+
+import java.util.Arrays;
+
+public class ParseCommand extends ICommand {
+
+    private final JavascriptExpansion expansion;
+
+    public ParseCommand(JavascriptExpansion expansion) {
+        this.expansion = expansion;
+    }
+
+    @Override
+    public void execute(CommandSender sender, String[] args) {
+        if (args.length < 2) {
+            ExpansionUtils.sendMsg(sender, "&cIncorrect usage! &f/" + command + " parse [me/player] [code]");
+            return;
+        }
+
+        final String script = String.join(" ", Arrays.copyOfRange(args, 1, args.length));
+        final JavascriptPlaceholder placeholder = new JavascriptPlaceholder(expansion.getGlobalEngine(), "parse-command", String.join(" ", script));
+
+        if ("me".equalsIgnoreCase(args[0])) {
+            if (!(sender instanceof Player)) {
+                ExpansionUtils.sendMsg(sender, "&cOnly players can run this command!");
+                return;
+            }
+
+            sender.sendMessage(placeholder.evaluate((Player) sender));
+            return;
+        }
+
+        final OfflinePlayer player = Bukkit.getOfflinePlayer(args[1]);
+
+        if (!player.hasPlayedBefore() || player.getName() == null) {
+            ExpansionUtils.sendMsg(sender, "&cUnknown player " + args[1]);
+            return;
+        }
+
+        sender.sendMessage(placeholder.evaluate(player));
+    }
+
+    @Override
+    @NotNull
+    public String getAlias() {
+        return "parse";
+    }
+}

src/main/java/com/extendedclip/papi/expansion/javascript/command/ReloadCommand.java

@@ -0,0 +1,33 @@
+package com.extendedclip.papi.expansion.javascript.command;
+
+import com.extendedclip.papi.expansion.javascript.ExpansionUtils;
+import com.extendedclip.papi.expansion.javascript.JavascriptExpansion;
+import org.bukkit.command.CommandSender;
+import org.jetbrains.annotations.NotNull;
+
+public class ReloadCommand extends ICommand {
+
+    private final JavascriptExpansion expansion;
+
+    public ReloadCommand(JavascriptExpansion expansion) {
+        this.expansion = expansion;
+    }
+
+    @Override
+    public void execute(CommandSender sender, String[] args) {
+
+        ExpansionUtils.sendMsg(sender, "&aJavascriptExpansion reloading...");
+        final int scripts = expansion.reloadScripts();
+        ExpansionUtils.sendMsg(sender, scripts + " &7script" + plural(scripts) + " loaded");
+    }
+
+    @Override
+    @NotNull
+    public String getAlias() {
+        return "reload";
+    }
+
+    private String plural(final int amount) {
+        return amount > 1 ? "s" : "";
+    }
+}