Add basic troubleshooting command

src/main/java/emu/grasscutter/command/commands/TroubleshootCommand.java

@@ -0,0 +1,46 @@
+package emu.grasscutter.command.commands;
+
+import emu.grasscutter.BuildConfig;
+import emu.grasscutter.Grasscutter;
+import emu.grasscutter.command.Command;
+import emu.grasscutter.command.CommandHandler;
+import emu.grasscutter.game.player.Player;
+import emu.grasscutter.tools.Tools;
+
+import java.util.List;
+
+@Command(label = "troubleshoot", aliases = {"helpme"},
+    usage = "/troubleshoot", permission = "grasscutter.command.troubleshoot",
+    targetRequirement = Command.TargetRequirement.NONE)
+public final class TroubleshootCommand implements CommandHandler {
+    @Override
+    public void execute(Player sender, Player targetPlayer, List<String> args) {
+        // Collect server information.
+        var build = "%s (%s)".formatted(
+            BuildConfig.VERSION, BuildConfig.GIT_HASH);
+        var playerCount = Grasscutter.getGameServer()
+            .getPlayers().size();
+        var resourceInfo = Tools.resourcesInfo();
+
+        // Collect configuration information.
+        var config = Grasscutter.getConfig();
+        var gameOptions = config.server.game;
+        var questingEnabled = gameOptions.gameOptions.questing.enabled;
+        var scriptsEnabled = gameOptions.enableScriptInBigWorld;
+
+        // TODO: Send to remote server (Grasscutter API) and send dump link.
+        CommandHandler.sendMessage(sender, """
+            Troubleshooting/Debug Information
+            Revision: %s
+            Player Count: %d
+            Questing Enabled: %s
+            Scripts Enabled: %s
+            Operating System: %s
+            Resource Information: %s"""
+            .formatted(
+                build, playerCount, questingEnabled, scriptsEnabled,
+                System.getProperty("os.name"), resourceInfo.toString()
+            )
+        );
+    }
+}

src/main/java/emu/grasscutter/tools/Tools.java

@@ -1,8 +1,5 @@
 package emu.grasscutter.tools;
 
-import static emu.grasscutter.utils.FileUtils.getResourcePath;
-import static emu.grasscutter.utils.Language.getTextMapKey;
-
 import emu.grasscutter.GameConstants;
 import emu.grasscutter.Grasscutter;
 import emu.grasscutter.command.CommandHandler;
@@ -14,10 +11,16 @@ import emu.grasscutter.data.excels.HomeWorldBgmData;
 import emu.grasscutter.data.excels.ItemData;
 import emu.grasscutter.data.excels.achievement.AchievementData;
 import emu.grasscutter.data.excels.avatar.AvatarData;
+import emu.grasscutter.utils.FileUtils;
+import emu.grasscutter.utils.JsonUtils;
 import emu.grasscutter.utils.Language;
 import emu.grasscutter.utils.Language.TextStrings;
 import it.unimi.dsi.fastutil.ints.Int2IntRBTreeMap;
 import it.unimi.dsi.fastutil.ints.Int2ObjectRBTreeMap;
+import lombok.AllArgsConstructor;
+import lombok.Builder;
+import lombok.val;
+
 import java.io.*;
 import java.nio.charset.StandardCharsets;
 import java.nio.file.Files;
@@ -29,7 +32,9 @@ import java.util.function.Function;
 import java.util.stream.Collectors;
 import java.util.stream.IntStream;
 import java.util.stream.LongStream;
-import lombok.val;
+
+import static emu.grasscutter.utils.FileUtils.getResourcePath;
+import static emu.grasscutter.utils.Language.getTextMapKey;
 
 public final class Tools {
     /**
@@ -398,4 +403,63 @@ public final class Tools {
         Grasscutter.getLogger().info("Invalid option. Will use EN (English) as fallback.");
         return "EN";
     }
+
+    /**
+     * Parses the 'resources.info' file found in resources.
+     *
+     * @return A {@link ResourceInfo} object containing the parsed data.
+     */
+    public static ResourceInfo resourcesInfo() {
+        var file = FileUtils.getResourcePath("resources.info");
+        try (var reader = Files.newBufferedReader(file, StandardCharsets.UTF_8)) {
+            var resourceInfo = ResourceInfo.builder();
+            reader.lines().forEach(line -> {
+                var split = line.split(":");
+                if (split.length != 2) return;
+
+                var key = split[0].trim();
+                var value = split[1].trim();
+
+                // Apply the value to the correct field.
+                switch (key) {
+                    case "repo" -> resourceInfo.repository(value);
+                    case "ver" -> resourceInfo.version(value);
+                    case "patches" -> resourceInfo.patches(value);
+                    case "scripts" -> resourceInfo.scripts(
+                        ScriptsType.valueOf(value.toUpperCase()));
+                    case "hasserverres" -> resourceInfo.hasServerResources(
+                        Boolean.parseBoolean(value));
+                    case "hasscenescriptdata" -> resourceInfo.hasSceneScriptData(
+                        Boolean.parseBoolean(value));
+                }
+            });
+
+            return resourceInfo.build();
+        } catch (Exception ignored) {
+            return new ResourceInfo(
+                null, null, null,
+                ScriptsType.UNKNOWN, false, false);
+        }
+    }
+
+    @AllArgsConstructor @Builder
+    public static class ResourceInfo {
+        private final String repository;
+        private final String version;
+        private final String patches;
+        private final ScriptsType scripts;
+        private final boolean hasServerResources;
+        private final boolean hasSceneScriptData;
+
+        @Override
+        public String toString() {
+            return JsonUtils.encode(this);
+        }
+    }
+
+    public enum ScriptsType {
+        OFFICIAL,
+        DUMPED,
+        UNKNOWN
+    }
 }