DreamfireJavaAPI.java

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/*
 * MIT License
 *
 * Copyright (c) 2025 Dreamfire Studio
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to deal
 * in the Software without restriction, including without limitation the rights
 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 * copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in all
 * copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
 * SOFTWARE.
 */
package com.dreamfirestudios.dreamcore.DreamJava;
 
import org.bukkit.plugin.java.JavaPlugin;
 
import java.io.File;
import java.io.FileInputStream;
import java.io.IOException;
import java.net.URISyntaxException;
import java.util.ArrayList;
import java.util.List;
import java.util.zip.ZipEntry;
import java.util.zip.ZipInputStream;
 
public class DreamfireJavaAPI {
 
    public static List<Class<?>> getAutoRegisterClasses(JavaPlugin javaPlugin) {
        try {
            return getAutoRegisterClassesRaw(javaPlugin);
        } catch (URISyntaxException | IOException | ClassNotFoundException e) {
            throw new RuntimeException("Error while retrieving auto-register classes", e);
        }
    }
 
    public static List<Class<?>> getAutoRegisterClassesRaw(JavaPlugin javaPlugin)
            throws URISyntaxException, IOException, ClassNotFoundException {
        List<Class<?>> annotatedClasses = new ArrayList<>();
        for (Class<?> clazz : getAllClassesFromPlugin(javaPlugin)) {
            if (clazz.isAnnotationPresent(PulseAutoRegister.class)) {
                annotatedClasses.add(clazz);
            }
        }
        return annotatedClasses;
    }
 
    public static List<Class<?>> getAllClassesFromPlugin(JavaPlugin javaPlugin)
            throws URISyntaxException, IOException, ClassNotFoundException {
 
        List<Class<?>> classes = new ArrayList<>();
        for (String className : getAllClassNamesFromPlugin(javaPlugin)) {
            classes.add(Class.forName(className));
        }
        return classes;
    }
 
    private static List<String> getAllClassNamesFromPlugin(JavaPlugin javaPlugin)
            throws URISyntaxException, IOException {
        File pluginFile = new File(javaPlugin.getClass().getProtectionDomain().getCodeSource().getLocation().toURI());
        List<String> classNames = new ArrayList<>();
        try (ZipInputStream zipStream = new ZipInputStream(new FileInputStream(pluginFile))) {
            ZipEntry entry;
            while ((entry = zipStream.getNextEntry()) != null) {
                if (isValidClassEntry(entry, javaPlugin)) {
                    String className = entry.getName().replace('/', '.').replace(".class", "");
                    classNames.add(className);
                }
            }
        }
        return classNames;
    }
 
    private static boolean isValidClassEntry(ZipEntry entry, JavaPlugin javaPlugin) {
        if (entry.isDirectory() || !entry.getName().endsWith(".class") || entry.getName().contains("$")) {
            return false;
        }
        String className = entry.getName().replace('/', '.').replace(".class", "");
        return className.startsWith(javaPlugin.getClass().getPackageName());
    }
}