Initial commit

.gitignore

@@ -0,0 +1,118 @@
+# User-specific stuff
+.idea/
+
+*.iml
+*.ipr
+*.iws
+
+# IntelliJ
+out/
+# mpeltonen/sbt-idea plugin
+.idea_modules/
+
+# JIRA plugin
+atlassian-ide-plugin.xml
+
+# Compiled class file
+*.class
+
+# Log file
+*.log
+
+# BlueJ files
+*.ctxt
+
+# Package Files #
+*.jar
+*.war
+*.nar
+*.ear
+*.zip
+*.tar.gz
+*.rar
+
+# virtual machine crash logs, see http://www.java.com/en/download/help/error_hotspot.xml
+hs_err_pid*
+
+*~
+
+# temporary files which can be created if a process still has a handle open of a deleted file
+.fuse_hidden*
+
+# KDE directory preferences
+.directory
+
+# Linux trash folder which might appear on any partition or disk
+.Trash-*
+
+# .nfs files are created when an open file is removed but is still being accessed
+.nfs*
+
+# General
+.DS_Store
+.AppleDouble
+.LSOverride
+
+# Icon must end with two \r
+Icon
+
+# Thumbnails
+._*
+
+# Files that might appear in the root of a volume
+.DocumentRevisions-V100
+.fseventsd
+.Spotlight-V100
+.TemporaryItems
+.Trashes
+.VolumeIcon.icns
+.com.apple.timemachine.donotpresent
+
+# Directories potentially created on remote AFP share
+.AppleDB
+.AppleDesktop
+Network Trash Folder
+Temporary Items
+.apdisk
+
+# Windows thumbnail cache files
+Thumbs.db
+Thumbs.db:encryptable
+ehthumbs.db
+ehthumbs_vista.db
+
+# Dump file
+*.stackdump
+
+# Folder config file
+[Dd]esktop.ini
+
+# Recycle Bin used on file shares
+$RECYCLE.BIN/
+
+# Windows Installer files
+*.cab
+*.msi
+*.msix
+*.msm
+*.msp
+
+# Windows shortcuts
+*.lnk
+
+.gradle
+build/
+
+# Ignore Gradle GUI config
+gradle-app.setting
+
+# Cache of project
+.gradletasknamecache
+
+**/build/
+
+# Common working directory
+run/
+
+# Avoid ignoring Gradle wrapper jar file (.jar files are usually ignored)
+!gradle-wrapper.jar

build.gradle

@@ -0,0 +1,64 @@
+plugins {
+    id 'java'
+}
+
+group = 'ru.redguy'
+version = '1.0.0'
+
+repositories {
+    maven {
+        name = 'redguy-repo'
+        url = 'https://repo.redguy.ru/repository/maven-public/'
+    }
+    mavenCentral()
+    maven {
+        name = 'papermc-repo'
+        url = 'https://papermc.io/repo/repository/maven-public/'
+    }
+    maven {
+        name = 'sonatype'
+        url = 'https://oss.sonatype.org/content/groups/public/'
+    }
+}
+
+dependencies {
+    compileOnly 'com.destroystokyo.paper:paper-api:1.16.5-R0.1-SNAPSHOT'
+    compileOnly 'me.filoghost.chestcommands:chestcommands-api:4.0.3'
+    compileOnly 'net.milkbowl.vault:VaultAPI:1.7'
+
+    implementation 'org.jetbrains:annotations:23.0.0'
+}
+
+def targetJavaVersion = 8
+java {
+    def javaVersion = JavaVersion.toVersion(targetJavaVersion)
+    sourceCompatibility = javaVersion
+    targetCompatibility = javaVersion
+    if (JavaVersion.current() < javaVersion) {
+        toolchain.languageVersion = JavaLanguageVersion.of(targetJavaVersion)
+    }
+}
+
+tasks.withType(JavaCompile).configureEach {
+    if (targetJavaVersion >= 10 || JavaVersion.current().isJava10Compatible()) {
+        options.release = targetJavaVersion
+    }
+}
+
+compileJava.options.encoding = 'UTF-8'
+
+processResources {
+    def props = [version: version]
+    inputs.properties props
+    filteringCharset 'UTF-8'
+    filesMatching('plugin.yml') {
+        expand props
+    }
+}
+
+jar {
+    configurations.implementation.canBeResolved = true;
+    from {
+        configurations.implementation.collect { it.isDirectory() ? it : zipTree(it) }
+    }
+}

gradle/wrapper/gradle-wrapper.properties

@@ -0,0 +1,5 @@
+distributionBase=GRADLE_USER_HOME
+distributionPath=wrapper/dists
+distributionUrl=https\://services.gradle.org/distributions/gradle-7.3.3-bin.zip
+zipStoreBase=GRADLE_USER_HOME
+zipStorePath=wrapper/dists

gradlew

@@ -0,0 +1,234 @@
+#!/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/master/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
+
+APP_HOME=$( cd "${APP_HOME:-./}" && pwd -P ) || exit
+
+APP_NAME="Gradle"
+APP_BASE_NAME=${0##*/}
+
+# Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.
+DEFAULT_JVM_OPTS='"-Xmx64m" "-Xms64m"'
+
+# Use the maximum available, or set MAX_FD != -1 to use that value.
+MAX_FD=maximum
+
+warn () {
+    echo "$*"
+} >&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 $MAX_FD in #(
+      max*)
+        MAX_FD=$( ulimit -H -n ) ||
+            warn "Could not query maximum file descriptor limit"
+    esac
+    case $MAX_FD in  #(
+      '' | soft) :;; #(
+      *)
+        ulimit -n "$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 "$CLASSPATH" \
+        org.gradle.wrapper.GradleWrapperMain \
+        "$@"
+
+# 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 +1,89 @@
+@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=.
+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%" == "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%"=="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!
+if  not "" == "%GRADLE_EXIT_CONSOLE%" exit 1
+exit /b 1
+
+:mainEnd
+if "%OS%"=="Windows_NT" endlocal
+
+:omega

settings.gradle

@@ -0,0 +1 @@
+rootProject.name = 'DynamicShop'

src/main/java/ru/redguy/dynamicshop/DynamicShop.java

@@ -0,0 +1,54 @@
+package ru.redguy.dynamicshop;
+
+import net.milkbowl.vault.economy.Economy;
+import org.bukkit.configuration.serialization.ConfigurationSerialization;
+import org.bukkit.plugin.RegisteredServiceProvider;
+import org.bukkit.plugin.java.JavaPlugin;
+import ru.redguy.dynamicshop.api.ShopItem;
+import ru.redguy.dynamicshop.commands.AddShopItemCommand;
+import ru.redguy.dynamicshop.commands.ShopCommand;
+
+public final class DynamicShop extends JavaPlugin {
+
+    static {
+        ConfigurationSerialization.registerClass(ShopItem.class, "ShopItem");
+    }
+
+    private static DynamicShop instance;
+
+    public static DynamicShop getInstance() {
+        return instance;
+    }
+
+    public Economy econ;
+
+    @Override
+    public void onEnable() {
+        instance = this;
+        getConfig().set("init",true);
+        saveConfig();
+        if(!setupEconomy()) {
+            getLogger().warning("Cannot find economy!");
+        }
+        getServer().getCommandMap().register("shop","shop",new ShopCommand("shop"));
+        getServer().getCommandMap().register("additem","shop",new AddShopItemCommand("additem"));
+        getServer().getCommandMap().register("reloadshop","shop",new AddShopItemCommand("reloadshop"));
+    }
+
+    @Override
+    public void onDisable() {
+
+    }
+
+    private boolean setupEconomy() {
+        if (getServer().getPluginManager().getPlugin("Vault") == null) {
+            return false;
+        }
+        RegisteredServiceProvider<Economy> rsp = getServer().getServicesManager().getRegistration(Economy.class);
+        if (rsp == null) {
+            return false;
+        }
+        econ = rsp.getProvider();
+        return true;
+    }
+}

src/main/java/ru/redguy/dynamicshop/api/Database.java

@@ -0,0 +1,91 @@
+package ru.redguy.dynamicshop.api;
+
+import org.bukkit.configuration.InvalidConfigurationException;
+import org.bukkit.configuration.file.YamlConfiguration;
+import org.jetbrains.annotations.Nullable;
+import ru.redguy.dynamicshop.DynamicShop;
+
+import java.io.File;
+import java.io.FileNotFoundException;
+import java.io.IOException;
+import java.util.ArrayList;
+import java.util.List;
+
+public class Database {
+    private static final Database instance = new Database();
+
+    public static Database getInstance() {
+        return instance;
+    }
+
+    private final File file = new File(DynamicShop.getInstance().getDataFolder(), "items.yml");
+    private final YamlConfiguration conf = new YamlConfiguration();
+
+    public Database() {
+        load();
+        save();
+    }
+
+    public void load() {
+        try {
+            conf.load(file);
+        } catch (FileNotFoundException e) {
+            try {
+                file.createNewFile();
+            } catch (IOException ex) {
+                throw new RuntimeException(ex);
+            }
+            try {
+                conf.load(file);
+            } catch (IOException | InvalidConfigurationException ex) {
+                throw new RuntimeException(ex);
+            }
+        } catch (IOException | InvalidConfigurationException e) {
+            throw new RuntimeException(e);
+        }
+    }
+
+    private void save() {
+        try {
+            conf.save(file);
+        } catch (IOException e) {
+            throw new RuntimeException(e);
+        }
+    }
+
+    public List<ShopItem> getItems() {
+        List<?> list = conf.getList("items");
+        if(list == null) list = new ArrayList<>();
+        List<ShopItem> shopItems = new ArrayList<>();
+        for (Object o : list) {
+            if(o instanceof ShopItem) {
+                shopItems.add((ShopItem) o);
+            }
+        }
+        return shopItems;
+    }
+
+    public void setItems(List<ShopItem> items) {
+        conf.set("items",items);
+        save();
+    }
+
+    @Nullable
+    public ShopItem getItem(int index) {
+        List<ShopItem> items = getItems();
+        if(items.size()<=index) return null;
+        return items.get(index);
+    }
+
+    public void setItem(int index, ShopItem item) {
+        List<ShopItem> items = getItems();
+        items.set(index,item);
+        setItems(items);
+    }
+
+    public void addItem(ShopItem item) {
+        List<ShopItem> items = getItems();
+        items.add(item);
+        setItems(items);
+    }
+}

src/main/java/ru/redguy/dynamicshop/api/ShopItem.java

@@ -0,0 +1,73 @@
+package ru.redguy.dynamicshop.api;
+
+import org.bukkit.Material;
+import org.bukkit.configuration.serialization.ConfigurationSerializable;
+import org.bukkit.configuration.serialization.SerializableAs;
+import org.bukkit.inventory.ItemStack;
+import org.jetbrains.annotations.Contract;
+import org.jetbrains.annotations.NotNull;
+
+import java.util.HashMap;
+import java.util.Map;
+
+@SerializableAs("ShopItem")
+public class ShopItem implements Cloneable, ConfigurationSerializable {
+    private ItemStack item;
+    private double price;
+
+    public ShopItem(ItemStack item, double price) {
+        this.item = item;
+        this.price = price;
+    }
+
+    public ItemStack getItem() {
+        return item;
+    }
+
+    public void setItem(ItemStack item) {
+        this.item = item;
+    }
+
+    public double getPrice() {
+        return price;
+    }
+
+    public void setPrice(double price) {
+        this.price = price;
+    }
+
+    @Contract("_ -> new")
+    public static @NotNull ShopItem deserialize(@NotNull Map<String, Object> args) {
+        ItemStack item = new ItemStack(Material.AIR);
+        double price = 0;
+        if(args.containsKey("item")) {
+            item = (ItemStack) args.get("item");
+        }
+
+        if(args.containsKey("price")) {
+            price = (Double) args.get("price");
+        }
+
+        return new ShopItem(item,price);
+    }
+
+    @Override
+    public @NotNull Map<String, Object> serialize() {
+        HashMap<String, Object> map = new HashMap<>();
+        map.put("item",item);
+        map.put("price",price);
+        return map;
+    }
+
+    @Override
+    public ShopItem clone() {
+        try {
+            ShopItem clone = (ShopItem) super.clone();
+            clone.item = item;
+            clone.price = price;
+            return clone;
+        } catch (CloneNotSupportedException e) {
+            throw new AssertionError();
+        }
+    }
+}

src/main/java/ru/redguy/dynamicshop/commands/AddShopItemCommand.java

@@ -0,0 +1,31 @@
+package ru.redguy.dynamicshop.commands;
+
+import org.bukkit.command.Command;
+import org.bukkit.command.CommandSender;
+import org.bukkit.entity.Player;
+import org.jetbrains.annotations.NotNull;
+import org.jetbrains.annotations.Nullable;
+import ru.redguy.dynamicshop.api.Database;
+import ru.redguy.dynamicshop.api.ShopItem;
+import ru.redguy.dynamicshop.gui.ShopGuiSell;
+
+public class AddShopItemCommand extends Command {
+    public AddShopItemCommand(@NotNull String name) {
+        super(name);
+    }
+
+    @Override
+    public boolean execute(@NotNull CommandSender sender, @NotNull String commandLabel, @NotNull String[] args) {
+        if(!(sender instanceof Player)) return true;
+        if(!sender.hasPermission("dynshop.add")) return true;
+        if(args.length!=1) return true;
+        Database.getInstance().addItem(new ShopItem(((Player) sender).getInventory().getItemInMainHand().clone(),Double.parseDouble(args[0].replace(',','.'))));
+        ShopGuiSell.update();
+        return true;
+    }
+
+    @Override
+    public @Nullable String getPermission() {
+        return "dynshop.add";
+    }
+}

src/main/java/ru/redguy/dynamicshop/commands/ShopCommand.java

@@ -0,0 +1,40 @@
+package ru.redguy.dynamicshop.commands;
+
+import com.google.common.collect.Lists;
+import org.bukkit.command.Command;
+import org.bukkit.command.CommandSender;
+import org.bukkit.entity.Player;
+import org.jetbrains.annotations.NotNull;
+import ru.redguy.dynamicshop.gui.ShopGuiBuy;
+import ru.redguy.dynamicshop.gui.ShopGuiSell;
+
+import java.util.Arrays;
+import java.util.List;
+import java.util.stream.Collectors;
+
+public class ShopCommand extends Command {
+    public ShopCommand(@NotNull String name) {
+        super(name);
+    }
+
+    @Override
+    public boolean execute(@NotNull CommandSender sender, @NotNull String commandLabel, @NotNull String[] args) {
+        if(args.length!=1) return true;
+        if(sender instanceof Player) {
+            if(args[0].equals("sell")) {
+                ShopGuiSell.open((Player) sender);
+            }
+            if(args[0].equals("buy")) {
+                ShopGuiBuy.open((Player) sender);
+            }
+        }
+        return true;
+    }
+
+    @Override
+    public @NotNull List<String> tabComplete(@NotNull CommandSender sender, @NotNull String alias, @NotNull String[] args) throws IllegalArgumentException {
+        String[] subCommands = {"sell","buy"};
+        if(args.length!=1) return Lists.newArrayList();
+        return Arrays.stream(subCommands).filter(s -> s.startsWith(args[0])).collect(Collectors.toList());
+    }
+}

src/main/java/ru/redguy/dynamicshop/commands/ShopReloadCommand.java

@@ -0,0 +1,29 @@
+package ru.redguy.dynamicshop.commands;
+
+import org.bukkit.command.Command;
+import org.bukkit.command.CommandSender;
+import org.jetbrains.annotations.NotNull;
+import org.jetbrains.annotations.Nullable;
+import ru.redguy.dynamicshop.api.Database;
+import ru.redguy.dynamicshop.gui.ShopGuiBuy;
+import ru.redguy.dynamicshop.gui.ShopGuiSell;
+
+public class ShopReloadCommand extends Command {
+    public ShopReloadCommand(@NotNull String name) {
+        super(name);
+    }
+
+    @Override
+    public boolean execute(@NotNull CommandSender sender, @NotNull String commandLabel, @NotNull String[] args) {
+        if(!sender.hasPermission("dynshop.reload")) return true;
+        Database.getInstance().load();
+        ShopGuiBuy.update();
+        ShopGuiSell.update();
+        return true;
+    }
+
+    @Override
+    public @Nullable String getPermission() {
+        return "dynshop.reload";
+    }
+}

src/main/java/ru/redguy/dynamicshop/gui/ShopGuiBuy.java

@@ -0,0 +1,30 @@
+package ru.redguy.dynamicshop.gui;
+
+import me.filoghost.chestcommands.api.Menu;
+import org.bukkit.entity.Player;
+import ru.redguy.dynamicshop.DynamicShop;
+import ru.redguy.dynamicshop.gui.icons.ItemIconBuy;
+
+public class ShopGuiBuy {
+    private static final Menu menu = Menu.create(DynamicShop.getInstance(),"Магазин | Покупка",6);
+
+    static {
+        populateIcons();
+    }
+
+    public static void open(Player player) {
+        menu.open(player);
+    }
+
+    public static void update() {
+        menu.refreshOpenViews();
+    }
+
+    private static void populateIcons() {
+        for (int row = 0; row < 3; row++) {
+            for (int id = 0; id < 9; id++) {
+                menu.setIcon(row,id,new ItemIconBuy(row*9+id));
+            }
+        }
+    }
+}

src/main/java/ru/redguy/dynamicshop/gui/ShopGuiSell.java

@@ -0,0 +1,30 @@
+package ru.redguy.dynamicshop.gui;
+
+import me.filoghost.chestcommands.api.Menu;
+import org.bukkit.entity.Player;
+import ru.redguy.dynamicshop.DynamicShop;
+import ru.redguy.dynamicshop.gui.icons.ItemIconSell;
+
+public class ShopGuiSell {
+    private static final Menu menu = Menu.create(DynamicShop.getInstance(),"Магазин | Продажа",6);
+
+    static {
+        populateIcons();
+    }
+
+    public static void open(Player player) {
+        menu.open(player);
+    }
+
+    public static void update() {
+        menu.refreshOpenViews();
+    }
+
+    private static void populateIcons() {
+        for (int row = 0; row < 3; row++) {
+            for (int id = 0; id < 9; id++) {
+                menu.setIcon(row,id,new ItemIconSell(row*9+id));
+            }
+        }
+    }
+}

src/main/java/ru/redguy/dynamicshop/gui/icons/ItemIconBuy.java

@@ -0,0 +1,64 @@
+package ru.redguy.dynamicshop.gui.icons;
+
+import me.filoghost.chestcommands.api.Icon;
+import me.filoghost.chestcommands.api.MenuView;
+import net.kyori.adventure.text.Component;
+import net.kyori.adventure.text.format.TextColor;
+import org.bukkit.Material;
+import org.bukkit.entity.Player;
+import org.bukkit.inventory.ItemStack;
+import org.jetbrains.annotations.NotNull;
+import org.jetbrains.annotations.Nullable;
+import ru.redguy.dynamicshop.DynamicShop;
+import ru.redguy.dynamicshop.api.Database;
+import ru.redguy.dynamicshop.api.ShopItem;
+import ru.redguy.dynamicshop.gui.ShopGuiBuy;
+import ru.redguy.dynamicshop.gui.ShopGuiSell;
+
+import java.math.BigDecimal;
+import java.math.RoundingMode;
+import java.util.ArrayList;
+import java.util.List;
+
+public class ItemIconBuy implements Icon {
+    private final int index;
+
+    public ItemIconBuy(int index) {
+        this.index = index;
+    }
+
+    @Override
+    public @Nullable ItemStack render(@NotNull Player player) {
+        ShopItem item = Database.getInstance().getItem(index);
+        if (item == null) return null;
+        ItemStack stack = item.getItem().clone();
+        if (stack.getType() == Material.AIR) return null;
+        List<Component> lore = new ArrayList<>();
+        lore.add(Component.text("Цена: ").color(TextColor.color(255, 255, 255)).append(Component.text(item.getPrice() + 1).color(TextColor.color(255, 100, 0))));
+        stack.lore(lore);
+        return stack;
+    }
+
+    @Override
+    public void onClick(@NotNull MenuView menuView, @NotNull Player player) {
+        ShopItem item = Database.getInstance().getItem(index);
+        if (item == null) return;
+        if (item.getItem().getType() == Material.AIR) return;
+        if (!DynamicShop.getInstance().econ.has(player, item.getPrice() + 1)) return;
+
+        player.getInventory().addItem(item.getItem().clone());
+        DynamicShop.getInstance().econ.withdrawPlayer(player, item.getPrice() + 1);
+        item.setPrice(round(item.getPrice() + 0.1d, 2));
+        Database.getInstance().setItem(index, item);
+        ShopGuiSell.update();
+        ShopGuiBuy.update();
+    }
+
+    public static double round(double value, int places) {
+        if (places < 0) throw new IllegalArgumentException();
+
+        BigDecimal bd = BigDecimal.valueOf(value);
+        bd = bd.setScale(places, RoundingMode.HALF_DOWN);
+        return bd.doubleValue();
+    }
+}

src/main/java/ru/redguy/dynamicshop/gui/icons/ItemIconSell.java

@@ -0,0 +1,65 @@
+package ru.redguy.dynamicshop.gui.icons;
+
+import me.filoghost.chestcommands.api.Icon;
+import me.filoghost.chestcommands.api.MenuView;
+import net.kyori.adventure.text.Component;
+import net.kyori.adventure.text.format.TextColor;
+import org.bukkit.Material;
+import org.bukkit.entity.Player;
+import org.bukkit.inventory.ItemStack;
+import org.jetbrains.annotations.NotNull;
+import org.jetbrains.annotations.Nullable;
+import ru.redguy.dynamicshop.DynamicShop;
+import ru.redguy.dynamicshop.api.Database;
+import ru.redguy.dynamicshop.api.ShopItem;
+import ru.redguy.dynamicshop.gui.ShopGuiBuy;
+import ru.redguy.dynamicshop.gui.ShopGuiSell;
+
+import java.math.BigDecimal;
+import java.math.RoundingMode;
+import java.util.ArrayList;
+import java.util.List;
+
+public class ItemIconSell implements Icon {
+    private int index;
+
+    public ItemIconSell(int index) {
+        this.index = index;
+    }
+
+    @Override
+    public @Nullable ItemStack render(@NotNull Player player) {
+        ShopItem item = Database.getInstance().getItem(index);
+        if(item == null) return null;
+        ItemStack stack = item.getItem().clone();
+        if (stack.getType() == Material.AIR) return null;
+        List<Component> lore = new ArrayList<>();
+        lore.add(Component.text("Цена: ").color(TextColor.color(255,255,255)).append(Component.text(item.getPrice()).color(TextColor.color(255,100,0))));
+        stack.lore(lore);
+        return stack;
+    }
+
+    @Override
+    public void onClick(@NotNull MenuView menuView, @NotNull Player player) {
+        ShopItem item = Database.getInstance().getItem(index);
+        if(item == null) return;
+        if (item.getItem().getType() == Material.AIR) return;
+        if(!player.getInventory().containsAtLeast(item.getItem().clone(),item.getItem().clone().getAmount())) return;
+        if(item.getPrice()<=1) return;
+
+        player.getInventory().removeItem(item.getItem().clone());
+        DynamicShop.getInstance().econ.depositPlayer(player,item.getPrice());
+        item.setPrice(round(item.getPrice()-0.1d,2));
+        Database.getInstance().setItem(index,item);
+        ShopGuiSell.update();
+        ShopGuiBuy.update();
+    }
+
+    public static double round(double value, int places) {
+        if (places < 0) throw new IllegalArgumentException();
+
+        BigDecimal bd = BigDecimal.valueOf(value);
+        bd = bd.setScale(places, RoundingMode.HALF_DOWN);
+        return bd.doubleValue();
+    }
+}

src/main/resources/plugin.yml

@@ -0,0 +1,8 @@
+name: DynamicShop
+version: '${version}'
+main: ru.redguy.dynamicshop.DynamicShop
+api-version: 1.16
+prefix: DynShop
+authors: [ RedGuy ]
+description: Plugin who provides shop with dynamic pricing
+website: https://redguy.ru