Initial work on reflection, pulls version from resources.

build.gradle

@@ -1,55 +0,0 @@
-plugins {
-    id 'java'
-    id("xyz.jpenilla.run-paper") version "2.3.1"
-}
-
-group = 'io.github.adrianvic'
-version = '1.0.2-SNAPSHOT'
-
-repositories {
-    mavenCentral()
-    maven {
-        name = "papermc-repo"
-        url = "https://repo.papermc.io/repository/maven-public/"
-    }
-}
-
-dependencies {
-    compileOnly("io.papermc.paper:paper-api:1.21.10-R0.1-SNAPSHOT")
-}
-
-tasks {
-  runServer {
-    // Configure the Minecraft version for our task.
-    // This is the only required configuration besides applying the plugin.
-    // Your plugin's jar (or shadowJar if present) will be used automatically.
-    minecraftVersion("1.21")
-  }
-}
-
-def targetJavaVersion = 21
-java {
-    def javaVersion = JavaVersion.toVersion(targetJavaVersion)
-    sourceCompatibility = javaVersion
-    targetCompatibility = javaVersion
-    if (JavaVersion.current() < javaVersion) {
-        toolchain.languageVersion = JavaLanguageVersion.of(targetJavaVersion)
-    }
-}
-
-tasks.withType(JavaCompile).configureEach {
-    options.encoding = 'UTF-8'
-
-    if (targetJavaVersion >= 10 || JavaVersion.current().isJava10Compatible()) {
-        options.release.set(targetJavaVersion)
-    }
-}
-
-processResources {
-    def props = [version: version]
-    inputs.properties props
-    filteringCharset 'UTF-8'
-    filesMatching('plugin.yml') {
-        expand props
-    }
-}

build.gradle.kts

@@ -0,0 +1,93 @@
+plugins {
+    java
+    id("xyz.jpenilla.run-paper") version "2.3.1"
+}
+
+group = "io.github.adrianvic"
+version = "1.0.2-SNAPSHOT"
+
+repositories {
+    mavenCentral()
+    maven("https://repo.papermc.io/repository/maven-public/")
+}
+
+/* ----------------------------------------- */
+/*            SUPPORTED VERSIONS             */
+/* ----------------------------------------- */
+
+val mcVersions = listOf(
+        "b1_7_3",
+        "r1_21"
+)
+
+/* ----------------------------------------- */
+/*       CREATE SOURCE SET PER VERSION       */
+/* ----------------------------------------- */
+
+mcVersions.forEach { ver ->
+    val ss = sourceSets.create(ver) {
+        java.srcDir("src/$ver/java")
+
+        resources.setSrcDirs(listOf("src/$ver/resources", "src/main/resources"))
+
+        compileClasspath += sourceSets["main"].output
+        runtimeClasspath += output + compileClasspath
+    }
+
+    tasks.withType<ProcessResources> {
+        duplicatesStrategy = DuplicatesStrategy.EXCLUDE
+    }
+
+    configurations[ss.implementationConfigurationName]
+        .extendsFrom(configurations["implementation"])
+
+    configurations[ss.compileOnlyConfigurationName]
+        .extendsFrom(configurations["compileOnly"])
+
+}
+
+/* ----------------------------------------- */
+/*               DEPENDENCIES                */
+/* ----------------------------------------- */
+
+dependencies {
+    add("compileOnly", "io.papermc.paper:paper-api:1.21.10-R0.1-SNAPSHOT")
+    add("r1_21CompileOnly", "io.papermc.paper:paper-api:1.21.10-R0.1-SNAPSHOT")
+    add("b1_7_3CompileOnly", files("libs/beta173-api.jar"))
+}
+
+/* ----------------------------------------- */
+/*               BUILD TASKS                 */
+/* ----------------------------------------- */
+
+mcVersions.forEach { ver ->
+    tasks.register<Jar>("jar${ver.replace(".", "_").replace("-", "_").replace("/", "_").capitalize()}") {
+        duplicatesStrategy = DuplicatesStrategy.EXCLUDE
+        from(sourceSets["main"].output)
+        from(sourceSets[ver].output)
+        archiveClassifier.set(ver)
+
+        manifest {
+            attributes(
+                "Nemesis-Impl-Version" to ver
+            )
+        }
+
+    }
+}
+
+/* ----------------------------------------- */
+/*              JAVA SETTINGS                */
+/* ----------------------------------------- */
+
+java {
+    toolchain.languageVersion.set(JavaLanguageVersion.of(21))
+}
+
+tasks.withType<JavaCompile> {
+    options.encoding = "UTF-8"
+}
+
+tasks.runServer {
+    minecraftVersion("1.21")
+}

src/b1_7_3/java/io/github/adrianvic/nemesiseye/impl/b1_7_3.java

@@ -0,0 +1,6 @@
+package io.github.adrianvic.nemesiseye.impl;
+
+import io.github.adrianvic.nemesiseye.reflection.Glimmer;
+
+public class b1_7_3 implements Glimmer {
+}

src/b1_7_3/resources/plugin.yml

@@ -0,0 +1,5 @@
+name: "Eye-of-Nemesis"
+version: '1.0.2-SNAPSHOT'
+main: io.github.adrianvic.nemesiseye.Nemesis
+author: 'Adrian Victor'
+description: "Change what players can do based in custom criteria."

src/b1_7_3/resources/version.properties

@@ -0,0 +1 @@
+impl.version=b1_7_3

src/main/java/io/github/adrianvic/nemesiseye/Config.java

@@ -1,7 +1,6 @@
 package io.github.adrianvic.nemesiseye;
 
 import io.github.adrianvic.nemesiseye.policy.Policy;
-import io.github.adrianvic.nemesiseye.policy.PolicyParser;
 import io.github.adrianvic.nemesiseye.policy.PolicyParsers;
 import org.bukkit.configuration.file.YamlConfiguration;
 

src/main/java/io/github/adrianvic/nemesiseye/Nemesis.java

@@ -1,23 +1,67 @@
 package io.github.adrianvic.nemesiseye;
 
 import io.github.adrianvic.nemesiseye.commands.Eye;
+import io.github.adrianvic.nemesiseye.reflection.Glimmer;
 import org.bukkit.plugin.java.JavaPlugin;
 
+import java.io.IOException;
+import java.io.InputStream;
+import java.util.Properties;
+
 public final class Nemesis extends JavaPlugin {
+    private Glimmer glim;
+    private static final String VERSION_PROP = "impl.version";
+    private static Nemesis instance;
 
     @Override
     public void onEnable() {
+        instance = this;
+        glim = loadGlim();
         getServer().getPluginManager().registerEvents(new EventListener(), this);
         Config.getInstance().load();
         getCommand("eye").setExecutor(new Eye());
     }
 
+    private String readImplVersion() {
+        Properties props = new Properties();
+        try (InputStream is = getClass().getClassLoader()
+                .getResourceAsStream("version.properties")) {
+            if (is == null) {
+                throw new IllegalStateException("version.properties not found on classpath.");
+            }
+            props.load(is);
+        } catch (IOException e) {
+            throw new IllegalStateException("Failed to load version.properties", e);
+        }
+        String version = props.getProperty(VERSION_PROP);
+        if (version == null || version.isBlank()) {
+            throw new IllegalStateException(VERSION_PROP + " property missing in version.properties.");
+        }
+        return version.trim();
+    }
+
+    private Glimmer loadGlim() {
+        String implVersion = readImplVersion();
+        String className = "io.github.adrianvic.nemesiseye.impl." + implVersion;
+
+        try {
+            Class<?> clazz = Class.forName(className, true, getClass().getClassLoader());
+            if (!Glimmer.class.isAssignableFrom(clazz)) {
+                throw new IllegalStateException(className + " does not implement Glimmer.");
+            }
+            return (Glimmer) clazz.getDeclaredConstructor().newInstance();
+        } catch (ReflectiveOperationException e) {
+            throw new IllegalStateException("Failed to instantiate " + className, e);
+        }
+    }
+
     @Override
     public void onDisable() {
-        // Plugin shutdown logic
     }
 
     public static Nemesis getInstance() {
-        return getPlugin(Nemesis.class);
+        return instance;
     }
+
+    public Glimmer getGlimmer() { return glim; }
 }

src/main/java/io/github/adrianvic/nemesiseye/reflection/Glimmer.java

@@ -0,0 +1,5 @@
+package io.github.adrianvic.nemesiseye.reflection;
+
+public interface Glimmer {
+
+}

src/r1_21/java/io/github/adrianvic/nemesiseye/impl/r1_21.java

@@ -0,0 +1,4 @@
+package io.github.adrianvic.nemesiseye.impl;
+
+public class r1_21 {
+}

src/r1_21/resources/version.properties

@@ -0,0 +1 @@
+impl.version=r1_21