create mock

build.gradle.kts

@@ -0,0 +1,97 @@
+import net.minecrell.pluginyml.bukkit.BukkitPluginDescription
+
+group = "net.hareworks"
+version = "1.0"
+
+val exposedVersion = "0.54.0"
+
+plugins {
+    kotlin("jvm") version "2.0.20"
+    id("net.minecrell.plugin-yml.bukkit") version "0.6.0"
+    id("com.github.johnrengelman.shadow") version "8.1.1"
+}
+repositories {
+    mavenCentral()
+    maven("https://repo.papermc.io/repository/maven-public/")
+}
+dependencies {
+    compileOnly("io.papermc.paper:paper-api:1.21.1-R0.1-SNAPSHOT")
+    implementation("net.kyori:adventure-api:4.17.0")
+    implementation("net.kyori:adventure-text-minimessage:4.17.0")
+    implementation("org.postgresql:postgresql:42.7.1")
+    implementation("org.jetbrains.exposed:exposed-core:$exposedVersion")
+    implementation("org.jetbrains.exposed:exposed-dao:$exposedVersion")
+    implementation("org.jetbrains.exposed:exposed-jdbc:$exposedVersion")
+    implementation("org.jetbrains.kotlinx:kotlinx-datetime:0.6.1")
+    implementation("org.jetbrains.exposed:exposed-kotlin-datetime:$exposedVersion")
+}
+tasks {
+    shadowJar {
+        archiveBaseName.set("SimplyMCDB")
+        archiveClassifier.set("")
+    }
+}
+
+bukkit {
+    main = "net.hareworks.simplymcdb.App"
+    name = "Simply-Minecraft-DB"
+    description = "It provides a simple way to manage player data through a database."
+    version = getVersion().toString()
+		apiVersion = "1.21.1"
+    authors =
+            listOf(
+                "Hare-K02",
+            )
+    permissions {
+        register("simplydb.*") {
+            children = listOf("simplydb.command", "simplydb.admin")
+        }
+        register("simplydb.command") {
+            description = "Allows access to the /simplydb command"
+            default = BukkitPluginDescription.Permission.Default.TRUE
+        }
+        register("simplydb.command.*") {
+            children = listOf(
+                "simplydb.command.config",
+                "simplydb.command.config.*",
+                "simplydb.command.on",
+                "simplydb.command.off",
+            )
+        }
+        register("simplydb.command.config") {
+            description = "Allows access to the /simplydb config command"
+            default = BukkitPluginDescription.Permission.Default.OP
+        }
+        register("simplydb.command.config.*") {
+            children = listOf(
+                "simplydb.command.config.reload",
+                "simplydb.command.config.fetch",
+                "simplydb.command.config.upload",
+            )
+        }
+        register("simplydb.command.config.reload") {
+            description = "Allows access to the /simplydb config reload command"
+            default = BukkitPluginDescription.Permission.Default.OP
+        }
+        register("simplydb.command.config.fetch") {
+            description = "Allows access to the /simplydb config fetch command"
+            default = BukkitPluginDescription.Permission.Default.OP
+        }
+        register("simplydb.command.config.upload") {
+            description = "Allows access to the /simplydb config upload command"
+            default = BukkitPluginDescription.Permission.Default.OP
+        }
+        register("simplydb.command.on") {
+            description = "Allows access to the /simplydb on command"
+            default = BukkitPluginDescription.Permission.Default.OP
+        }
+        register("simplydb.command.off") {
+            description = "Allows access to the /simplydb off command"
+            default = BukkitPluginDescription.Permission.Default.OP
+        }
+        register("simplydb.admin") {
+            description = "Allows configration/manage simplydb"
+            default = BukkitPluginDescription.Permission.Default.OP
+        }
+		}
+}

gradle/wrapper/gradle-wrapper.properties

@@ -0,0 +1,6 @@
+distributionBase=GRADLE_USER_HOME
+distributionPath=wrapper/dists
+distributionUrl=https\://services.gradle.org/distributions/gradle-8.10.1-bin.zip
+networkTimeout=10000
+zipStoreBase=GRADLE_USER_HOME
+zipStorePath=wrapper/dists

gradlew

@@ -0,0 +1,244 @@
+#!/bin/sh
+
+#
+# Copyright © 2015-2021 the original authors.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#      https://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+#
+
+##############################################################################
+#
+#   Gradle start up script for POSIX generated by Gradle.
+#
+#   Important for running:
+#
+#   (1) You need a POSIX-compliant shell to run this script. If your /bin/sh is
+#       noncompliant, but you have some other compliant shell such as ksh or
+#       bash, then to run this script, type that shell name before the whole
+#       command line, like:
+#
+#           ksh Gradle
+#
+#       Busybox and similar reduced shells will NOT work, because this script
+#       requires all of these POSIX shell features:
+#         * functions;
+#         * expansions «$var», «${var}», «${var:-default}», «${var+SET}»,
+#           «${var#prefix}», «${var%suffix}», and «$( cmd )»;
+#         * compound commands having a testable exit status, especially «case»;
+#         * various built-in commands including «command», «set», and «ulimit».
+#
+#   Important for patching:
+#
+#   (2) This script targets any POSIX shell, so it avoids extensions provided
+#       by Bash, Ksh, etc; in particular arrays are avoided.
+#
+#       The "traditional" practice of packing multiple parameters into a
+#       space-separated string is a well documented source of bugs and security
+#       problems, so this is (mostly) avoided, by progressively accumulating
+#       options in "$@", and eventually passing that to Java.
+#
+#       Where the inherited environment variables (DEFAULT_JVM_OPTS, JAVA_OPTS,
+#       and GRADLE_OPTS) rely on word-splitting, this is performed explicitly;
+#       see the in-line comments for details.
+#
+#       There are tweaks for specific operating systems such as AIX, CygWin,
+#       Darwin, MinGW, and NonStop.
+#
+#   (3) This script is generated from the Groovy template
+#       https://github.com/gradle/gradle/blob/HEAD/subprojects/plugins/src/main/resources/org/gradle/api/internal/plugins/unixStartScript.txt
+#       within the Gradle project.
+#
+#       You can find Gradle at https://github.com/gradle/gradle/.
+#
+##############################################################################
+
+# Attempt to set APP_HOME
+
+# Resolve links: $0 may be a link
+app_path=$0
+
+# Need this for daisy-chained symlinks.
+while
+    APP_HOME=${app_path%"${app_path##*/}"}  # leaves a trailing /; empty if no leading path
+    [ -h "$app_path" ]
+do
+    ls=$( ls -ld "$app_path" )
+    link=${ls#*' -> '}
+    case $link in             #(
+      /*)   app_path=$link ;; #(
+      *)    app_path=$APP_HOME$link ;;
+    esac
+done
+
+# This is normally unused
+# shellcheck disable=SC2034
+APP_BASE_NAME=${0##*/}
+APP_HOME=$( cd "${APP_HOME:-./}" && pwd -P ) || exit
+
+# Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.
+DEFAULT_JVM_OPTS='"-Xmx64m" "-Xms64m"'
+
+# Use the maximum available, or set MAX_FD != -1 to use that value.
+MAX_FD=maximum
+
+warn () {
+    echo "$*"
+} >&2
+
+die () {
+    echo
+    echo "$*"
+    echo
+    exit 1
+} >&2
+
+# OS specific support (must be 'true' or 'false').
+cygwin=false
+msys=false
+darwin=false
+nonstop=false
+case "$( uname )" in                #(
+  CYGWIN* )         cygwin=true  ;; #(
+  Darwin* )         darwin=true  ;; #(
+  MSYS* | MINGW* )  msys=true    ;; #(
+  NONSTOP* )        nonstop=true ;;
+esac
+
+CLASSPATH=$APP_HOME/gradle/wrapper/gradle-wrapper.jar
+
+
+# Determine the Java command to use to start the JVM.
+if [ -n "$JAVA_HOME" ] ; then
+    if [ -x "$JAVA_HOME/jre/sh/java" ] ; then
+        # IBM's JDK on AIX uses strange locations for the executables
+        JAVACMD=$JAVA_HOME/jre/sh/java
+    else
+        JAVACMD=$JAVA_HOME/bin/java
+    fi
+    if [ ! -x "$JAVACMD" ] ; then
+        die "ERROR: JAVA_HOME is set to an invalid directory: $JAVA_HOME
+
+Please set the JAVA_HOME variable in your environment to match the
+location of your Java installation."
+    fi
+else
+    JAVACMD=java
+    which java >/dev/null 2>&1 || die "ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH.
+
+Please set the JAVA_HOME variable in your environment to match the
+location of your Java installation."
+fi
+
+# Increase the maximum file descriptors if we can.
+if ! "$cygwin" && ! "$darwin" && ! "$nonstop" ; then
+    case $MAX_FD in #(
+      max*)
+        # In POSIX sh, ulimit -H is undefined. That's why the result is checked to see if it worked.
+        # shellcheck disable=SC3045
+        MAX_FD=$( ulimit -H -n ) ||
+            warn "Could not query maximum file descriptor limit"
+    esac
+    case $MAX_FD in  #(
+      '' | soft) :;; #(
+      *)
+        # In POSIX sh, ulimit -n is undefined. That's why the result is checked to see if it worked.
+        # shellcheck disable=SC3045
+        ulimit -n "$MAX_FD" ||
+            warn "Could not set maximum file descriptor limit to $MAX_FD"
+    esac
+fi
+
+# Collect all arguments for the java command, stacking in reverse order:
+#   * args from the command line
+#   * the main class name
+#   * -classpath
+#   * -D...appname settings
+#   * --module-path (only if needed)
+#   * DEFAULT_JVM_OPTS, JAVA_OPTS, and GRADLE_OPTS environment variables.
+
+# For Cygwin or MSYS, switch paths to Windows format before running java
+if "$cygwin" || "$msys" ; then
+    APP_HOME=$( cygpath --path --mixed "$APP_HOME" )
+    CLASSPATH=$( cygpath --path --mixed "$CLASSPATH" )
+
+    JAVACMD=$( cygpath --unix "$JAVACMD" )
+
+    # Now convert the arguments - kludge to limit ourselves to /bin/sh
+    for arg do
+        if
+            case $arg in                                #(
+              -*)   false ;;                            # don't mess with options #(
+              /?*)  t=${arg#/} t=/${t%%/*}              # looks like a POSIX filepath
+                    [ -e "$t" ] ;;                      #(
+              *)    false ;;
+            esac
+        then
+            arg=$( cygpath --path --ignore --mixed "$arg" )
+        fi
+        # Roll the args list around exactly as many times as the number of
+        # args, so each arg winds up back in the position where it started, but
+        # possibly modified.
+        #
+        # NB: a `for` loop captures its iteration list before it begins, so
+        # changing the positional parameters here affects neither the number of
+        # iterations, nor the values presented in `arg`.
+        shift                   # remove old arg
+        set -- "$@" "$arg"      # push replacement arg
+    done
+fi
+
+# Collect all arguments for the java command;
+#   * $DEFAULT_JVM_OPTS, $JAVA_OPTS, and $GRADLE_OPTS can contain fragments of
+#     shell script including quotes and variable substitutions, so put them in
+#     double quotes to make sure that they get re-expanded; and
+#   * put everything else in single quotes, so that it's not re-expanded.
+
+set -- \
+        "-Dorg.gradle.appname=$APP_BASE_NAME" \
+        -classpath "$CLASSPATH" \
+        org.gradle.wrapper.GradleWrapperMain \
+        "$@"
+
+# Stop when "xargs" is not available.
+if ! command -v xargs >/dev/null 2>&1
+then
+    die "xargs is not available"
+fi
+
+# Use "xargs" to parse quoted args.
+#
+# With -n1 it outputs one arg per line, with the quotes and backslashes removed.
+#
+# In Bash we could simply go:
+#
+#   readarray ARGS < <( xargs -n1 <<<"$var" ) &&
+#   set -- "${ARGS[@]}" "$@"
+#
+# but POSIX shell has neither arrays nor command substitution, so instead we
+# post-process each arg (as a line of input to sed) to backslash-escape any
+# character that might be a shell metacharacter, then use eval to reverse
+# that process (while maintaining the separation between arguments), and wrap
+# the whole thing up as a single "set" statement.
+#
+# This will of course break if any of these variables contains a newline or
+# an unmatched quote.
+#
+
+eval "set -- $(
+        printf '%s\n' "$DEFAULT_JVM_OPTS $JAVA_OPTS $GRADLE_OPTS" |
+        xargs -n1 |
+        sed ' s~[^-[:alnum:]+,./:=@_]~\\&~g; ' |
+        tr '\n' ' '
+    )" '"$@"'
+
+exec "$JAVACMD" "$@"

gradlew.bat

@@ -0,0 +1,92 @@
+@rem
+@rem Copyright 2015 the original author or authors.
+@rem
+@rem Licensed under the Apache License, Version 2.0 (the "License");
+@rem you may not use this file except in compliance with the License.
+@rem You may obtain a copy of the License at
+@rem
+@rem      https://www.apache.org/licenses/LICENSE-2.0
+@rem
+@rem Unless required by applicable law or agreed to in writing, software
+@rem distributed under the License is distributed on an "AS IS" BASIS,
+@rem WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+@rem See the License for the specific language governing permissions and
+@rem limitations under the License.
+@rem
+
+@if "%DEBUG%"=="" @echo off
+@rem ##########################################################################
+@rem
+@rem  Gradle startup script for Windows
+@rem
+@rem ##########################################################################
+
+@rem Set local scope for the variables with windows NT shell
+if "%OS%"=="Windows_NT" setlocal
+
+set DIRNAME=%~dp0
+if "%DIRNAME%"=="" set DIRNAME=.
+@rem This is normally unused
+set APP_BASE_NAME=%~n0
+set APP_HOME=%DIRNAME%
+
+@rem Resolve any "." and ".." in APP_HOME to make it shorter.
+for %%i in ("%APP_HOME%") do set APP_HOME=%%~fi
+
+@rem Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.
+set DEFAULT_JVM_OPTS="-Xmx64m" "-Xms64m"
+
+@rem Find java.exe
+if defined JAVA_HOME goto findJavaFromJavaHome
+
+set JAVA_EXE=java.exe
+%JAVA_EXE% -version >NUL 2>&1
+if %ERRORLEVEL% equ 0 goto execute
+
+echo.
+echo ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH.
+echo.
+echo Please set the JAVA_HOME variable in your environment to match the
+echo location of your Java installation.
+
+goto fail
+
+:findJavaFromJavaHome
+set JAVA_HOME=%JAVA_HOME:"=%
+set JAVA_EXE=%JAVA_HOME%/bin/java.exe
+
+if exist "%JAVA_EXE%" goto execute
+
+echo.
+echo ERROR: JAVA_HOME is set to an invalid directory: %JAVA_HOME%
+echo.
+echo Please set the JAVA_HOME variable in your environment to match the
+echo location of your Java installation.
+
+goto fail
+
+:execute
+@rem Setup the command line
+
+set CLASSPATH=%APP_HOME%\gradle\wrapper\gradle-wrapper.jar
+
+
+@rem Execute Gradle
+"%JAVA_EXE%" %DEFAULT_JVM_OPTS% %JAVA_OPTS% %GRADLE_OPTS% "-Dorg.gradle.appname=%APP_BASE_NAME%" -classpath "%CLASSPATH%" org.gradle.wrapper.GradleWrapperMain %*
+
+:end
+@rem End local scope for the variables with windows NT shell
+if %ERRORLEVEL% equ 0 goto mainEnd
+
+:fail
+rem Set variable GRADLE_EXIT_CONSOLE if you need the _script_ return code instead of
+rem the _cmd.exe /c_ return code!
+set EXIT_CODE=%ERRORLEVEL%
+if %EXIT_CODE% equ 0 set EXIT_CODE=1
+if not ""=="%GRADLE_EXIT_CONSOLE%" exit %EXIT_CODE%
+exit /b %EXIT_CODE%
+
+:mainEnd
+if "%OS%"=="Windows_NT" endlocal
+
+:omega

src/main/kotlin/net/hareworks/kommandlib/main.kt

@@ -0,0 +1,188 @@
+package net.hareworks.kommandlib
+
+import kotlin.collections.listOf
+import org.bukkit.Bukkit
+import org.bukkit.command.CommandMap
+import org.bukkit.command.CommandSender
+import org.bukkit.command.PluginCommand
+import org.bukkit.command.TabCompleter
+import org.bukkit.plugin.java.JavaPlugin
+
+class KommandLib(plugin: JavaPlugin, vararg routes: Pair<String, Argument>) {
+  val routes = routes.toMap()
+  init {
+    val f = Bukkit.getServer().javaClass.getDeclaredField("commandMap")
+    f.isAccessible = true
+    val commandMap = f.get(Bukkit.getServer()) as CommandMap
+    for ((name, _) in routes) {
+      commandMap.register(
+          plugin.getName(),
+          (PluginCommand::class
+                  .java
+                  .declaredConstructors
+                  .first()
+                  .apply { isAccessible = true }
+                  .newInstance(name, plugin) as
+                  PluginCommand)
+              .apply {
+                this.name = name
+                this.setExecutor { sender, _, alias, args ->
+                  val route = getLastRoute(arrayOf(alias, *args))
+                  if (route.size == args.size + 1) route.last().onCommand(sender, args)
+                  true
+                }
+                this.tabCompleter = TabCompleter { sender, _, alias, args ->
+                  val route = getLastRoute(arrayOf(alias, *args))
+                  if (route.size == args.size) route.last().getCompletList(sender, args)
+                  else listOf()
+                }
+              }
+      )
+    }
+  }
+
+  fun getLastRoute(args: Array<String>): List<Argument> {
+    val list = mutableListOf<Argument>(routes[args[0]] ?: throw Exception("Invalid command"))
+    var i = 1
+    while (i + 1 <= args.size) {
+      if (list.last().routes.isEmpty()) break
+      val route =
+          list.last().routes.values.sortedBy { it.priority }.find { it.typeCheck(args[i]) } ?: break
+      list.add(route)
+      i += route.unit
+    }
+    return list
+  }
+
+  fun unregister() {
+    val f = Bukkit.getServer().javaClass.getDeclaredField("commandMap")
+    f.isAccessible = true
+    val commandMap = f.get(Bukkit.getServer()) as CommandMap
+    for ((name, _) in routes) {
+      commandMap.getCommand(name)?.unregister(commandMap)
+    }
+  }
+}
+
+abstract class Argument(
+    vararg routes: Pair<String, Argument>,
+    val execute: (CommandSender, Array<Any>) -> Unit
+) {
+  val routes = routes.toMap()
+  var name: String = ""
+    get() = field
+    protected set(value) {
+      field = value
+    }
+  var permission: String = ""
+    set(value) {
+      field = value
+      if (value.isEmpty()) return
+      for ((_, route) in routes) {
+        route.permission = value + "." + route.name
+      }
+    }
+
+  init {
+    for ((name, route) in routes) {
+      route.name = name
+    }
+  }
+
+  abstract var priority: Int
+  open var unit: Int = 1
+  abstract fun onCommand(sender: CommandSender, args: Array<String>)
+  abstract fun typeCheck(arg: String): Boolean
+  abstract fun toValue(args: Array<String>): Any
+
+  abstract fun suggest(sender: CommandSender, args: Array<String>): List<String>
+
+  fun getCompletList(sender: CommandSender, args: Array<String>): List<String> {
+    return routes
+        .values
+        .filter { sender.hasPermission(it.permission) }
+        .map { it.suggest(sender, args) }
+        .flatten()
+  }
+}
+
+class Route(vararg routes: Pair<String, Argument>, execute: (CommandSender, Array<Any>) -> Unit) :
+    Argument(*routes, execute = execute) {
+  override var priority: Int = 2
+  override fun onCommand(sender: CommandSender, args: Array<String>) {
+    execute(sender, args.map { it }.toTypedArray())
+  }
+  override fun typeCheck(arg: String): Boolean {
+    return this.name == arg
+  }
+  override fun toValue(args: Array<String>): Any {
+    return args.joinToString(" ")
+  }
+
+  override fun suggest(sender: CommandSender, args: Array<String>): List<String> {
+    return if (sender.hasPermission(this.permission) && this.name.startsWith(args.last()))
+        listOf(this.name)
+    else listOf()
+  }
+}
+
+class Text(vararg routes: Pair<String, Argument>, execute: (CommandSender, Array<Any>) -> Unit) :
+    Argument(*routes, execute = execute) {
+  override var priority: Int = 0
+  override fun typeCheck(arg: String): Boolean {
+    return true
+  }
+  override fun toValue(args: Array<String>): Any {
+    return args.joinToString(" ")
+  }
+  override fun onCommand(sender: CommandSender, args: Array<String>) {
+    execute(sender, args.map { it }.toTypedArray())
+  }
+
+  override fun suggest(sender: CommandSender, args: Array<String>): List<String> {
+    return listOf(args.last())
+  }
+}
+
+class Integer(vararg routes: Pair<String, Argument>, execute: (CommandSender, Array<Any>) -> Unit) :
+    Argument(*routes, execute = execute) {
+  override var priority: Int = 1
+  override fun typeCheck(arg: String): Boolean {
+    return arg.toIntOrNull() != null
+  }
+
+  override fun onCommand(sender: CommandSender, args: Array<String>) {
+    execute(sender, args.map { it.toInt() }.toTypedArray())
+  }
+
+  override fun toValue(args: Array<String>): Any {
+    return args[0].toInt()
+  }
+
+  override fun suggest(sender: CommandSender, args: Array<String>): List<String> {
+    return listOf()
+  }
+}
+
+class Position(
+    vararg routes: Pair<String, Argument>,
+    execute: (CommandSender, Array<Any>) -> Unit
+) : Argument(*routes, execute = execute) {
+  override var priority: Int = 3
+  override var unit: Int = 3
+  override fun typeCheck(arg: String): Boolean {
+    return true
+  }
+
+  override fun onCommand(sender: CommandSender, args: Array<String>) {
+    execute(sender, args.map { it }.toTypedArray())
+  }
+
+  override fun toValue(args: Array<String>): Any {
+    return Triple(args[0].toDouble(), args[1].toDouble(), args[2].toDouble())
+  }
+
+  override fun suggest(sender: CommandSender, args: Array<String>): List<String> {
+    return listOf()
+  }
+}

src/main/kotlin/net/hareworks/simplymcdb/App.kt

@@ -0,0 +1,43 @@
+package net.hareworks.simplymcdb
+
+import net.hareworks.simplymcdb.config.init as initConfig
+import net.hareworks.simplymcdb.database.Database
+import net.hareworks.simplymcdb.command.smcdb
+import net.hareworks.kommandlib.KommandLib
+import org.bukkit.plugin.java.JavaPlugin
+
+public class App : JavaPlugin() {
+  public var enabled: Boolean = false
+    private set
+  companion object {
+    lateinit var instance: App
+      private set
+  }
+  lateinit var command: KommandLib
+    private set
+  override fun onEnable() {
+    instance = this
+    logger.info("simplymcdb enabled.")
+
+    initConfig()
+    Database.connect()
+    command = KommandLib(this, "smcdb" to smcdb)
+  }
+  override fun onDisable() {
+    enabled = false
+    Database.disconnect()
+    command.unregister()
+    logger.info("simplymcdb disabled.")
+  }
+
+  public fun enable() {
+    enabled = true
+    logger.info("simplymcdb enabled.")
+  }
+
+  public fun disable() {
+    enabled = false
+    logger.info("simplymcdb disabled.")
+    Database.disconnect()
+  }
+}

src/main/kotlin/net/hareworks/simplymcdb/Command.kt

@@ -0,0 +1,81 @@
+package net.hareworks.simplymcdb.command
+
+import net.hareworks.kommandlib.*
+import net.hareworks.simplymcdb.App
+import net.hareworks.simplymcdb.config.reload as reloadConfig
+import net.kyori.adventure.text.minimessage.MiniMessage
+import org.bukkit.entity.Player
+
+public val smcdb: Route =
+ Route(
+   "config" to
+    Route(
+      "reload" to
+       Route { sender, _ ->
+         sender.sendMessage("reloading config...")
+         reloadConfig()
+         sender.sendMessage("reloaded.")
+       }
+        .apply {
+          permission =
+           "simplydb.command.config.reload"
+        },
+      "fetch" to
+       Route { sender, _ ->
+         sender.sendMessage("fetching config...")
+       }
+        .apply {
+          permission =
+           "simplydb.command.config.fetch"
+        },
+      "upload" to
+       Route { sender, _ ->
+         sender.sendMessage("uploading config...")
+       }
+        .apply {
+          permission =
+           "simplydb.command.config.upload"
+        },
+      "help" to
+       Route { sender, _ ->
+         var help =
+          MiniMessage.miniMessage()
+           .deserialize(
+            """<red>simplymcdb config help
+<gray>reload: <green>reload the config from config.yml
+<gray>fetch: <green>fetch the config from the database
+<gray>upload: <green>upload the current config to the database
+"""
+           )
+         sender.sendMessage(help)
+       }
+        .apply {
+          permission =
+           "simplydb.command.config"
+        }
+     ) { sender, _ ->
+      (sender as Player).performCommand("smcdb config help")
+    }
+     .apply { permission = "simplydb.command.config" },
+   "on" to
+    Route { sender, _ ->
+      if (App.instance.enabled) {
+        sender.sendMessage("simplymcdb is already enabled.")
+        return@Route
+      }
+      App.instance.enable()
+      sender.sendMessage("simplymcdb enabled.")
+    }
+     .apply { permission = "simplydb.command.on" },
+   "off" to
+    Route { sender, _ ->
+      if (!App.instance.enabled) {
+        sender.sendMessage("simplymcdb is already disabled.")
+        return@Route
+      }
+      App.instance.disable()
+      sender.sendMessage("simplymcdb disabled.")
+    }
+     .apply { permission = "simplydb.command.off" },
+  ) { sender, _ -> sender.sendMessage("simplymcdb command") }
+  .apply { permission = "simplydb.command" }

src/main/kotlin/net/hareworks/simplymcdb/Config.kt

@@ -0,0 +1,16 @@
+package net.hareworks.simplymcdb.config
+
+import net.hareworks.simplymcdb.App
+import org.bukkit.configuration.file.YamlConfiguration
+
+public val config: YamlConfiguration = YamlConfiguration()
+
+public fun init() {
+  App.instance.saveDefaultConfig()
+  config.load(App.instance.dataFolder.resolve("config.yml"))
+}
+
+public fun reload() {
+  config.load(App.instance.dataFolder.resolve("config.yml"))
+  App.instance.logger.info("config reloaded.")
+}

src/main/kotlin/net/hareworks/simplymcdb/Event.kt

@@ -0,0 +1,17 @@
+package net.hareworks.simplymcdb.event
+
+import net.hareworks.simplymcdb.App
+import org.bukkit.event.Listener
+import org.bukkit.event.EventHandler
+import org.bukkit.event.player.PlayerJoinEvent
+import net.kyori.adventure.text.minimessage.MiniMessage
+
+public object EventListener : Listener {
+  @EventHandler
+  fun onJoin(event: PlayerJoinEvent) {
+    if (event.player.hasPermission("simplymcdb.admin") || !App.instance.enabled) {
+      val mm = MiniMessage.miniMessage().deserialize("<red>simplymcdb is disabled.")
+      event.player.sendMessage(mm)
+    }
+  }
+}

src/main/kotlin/net/hareworks/simplymcdb/PlayerData.kt

@@ -0,0 +1,8 @@
+package net.hareworks.simplymcdb.playerdata
+
+public class PlayerData {
+  override fun toString() : String {
+    return "PlayerData"
+  }
+}
+  

src/main/kotlin/net/hareworks/simplymcdb/database/Database.kt

@@ -0,0 +1,81 @@
+package net.hareworks.simplymcdb.database
+
+import net.hareworks.simplymcdb.App
+import net.hareworks.simplymcdb.config.config
+import org.jetbrains.exposed.sql.*
+import org.jetbrains.exposed.sql.Database
+import org.jetbrains.exposed.sql.Table
+import org.jetbrains.exposed.sql.transactions.transaction
+
+object Players : Table() {
+  val uuid = varchar("uuid", 36)
+  val name = varchar("name", 16)
+  val lastLogin = long("last_login")
+  val lastLogout = long("last_logout")
+  val playTime = long("play_time")
+  val firstLogin = long("first_login")
+  val lastIp = varchar("last_ip", 15)
+  val lastServer = varchar("last_server", 255)
+
+  override val primaryKey = PrimaryKey(uuid)
+}
+
+public object Database {
+  public var instance: Database? = null
+    private set
+  public fun connect() {
+    val type = config.getString("database.type")
+    val host = config.getString("database.host")
+    val port = config.getInt("database.port")
+    val database = config.getString("database.database")
+    val user = config.getString("database.user")
+    val password = config.getString("database.password")
+    if (type == null || host == null || database == null || user == null || password == null) {
+      App.instance.logger.warning("Database configuration is invalid")
+      return
+    }
+    try {
+      instance =
+              when (type) {
+                "mysql" ->
+                        Database.connect(
+                                "jdbc:mysql://$host:$port/$database",
+                                "com.mysql.cj.jdbc.Driver",
+                                user,
+                                password
+                        )
+                "postgresql" ->
+                        Database.connect(
+                                "jdbc:postgresql://$host:$port/$database",
+                                "org.postgresql.Driver",
+                                user,
+                                password
+                        )
+                else -> {
+                  App.instance.logger.warning("Database type is invalid")
+                  return
+                }
+              }
+    } catch (e: Exception) {
+      App.instance.logger.warning("Database connection failed")
+      e.printStackTrace()
+    }
+    if (instance == null) return
+    App.instance.logger.info("Database connected: $host:$port/$database")
+    transaction { addLogger(StdOutSqlLogger)
+      SchemaUtils.create(Players)
+      Players.selectAll().forEach {
+        App.instance.logger.info(it[Players.name])
+      }
+    }
+  }
+  public fun disconnect() {
+    instance?.let {
+      it.connector().close()
+      instance = null
+      App.instance.logger.info("Database disconnected")
+      return
+    }
+    App.instance.logger.warning("Database is not connected")
+  }
+}

src/main/resources/config.yml

@@ -0,0 +1,8 @@
+enable: false
+database:
+  type: postgresql
+  host: localhost
+  port: 5432
+  database: smcdb
+  user: smcdb
+  password: SaN1m_wk2eh9