feat: add JavaScriptTask class

Signed-off-by: MiaoWoo <admin@yumc.pw>

src/main/java/pw/yumc/MiaoScript/Base.java

@@ -31,6 +31,10 @@ public class Base {
         return ProxyClass.class;
     }
 
+    public Class<?> getJavaScriptTaskClass() {
+        return JavaScriptTask.class;
+    }
+
     public String read(String path) throws IOException {
         return new String(Files.readAllBytes(new File(path).toPath()), StandardCharsets.UTF_8);
     }

src/main/java/pw/yumc/MiaoScript/JavaScriptTask.java

@@ -0,0 +1,39 @@
+package pw.yumc.MiaoScript;
+
+import java.util.concurrent.Delayed;
+import java.util.concurrent.TimeUnit;
+
+public class JavaScriptTask implements Delayed {
+    private final Object task;
+    private final long startTime;
+    private final long executeTime;
+
+    public JavaScriptTask(Object task, long ms) {
+        this.task = task;
+        this.startTime = System.currentTimeMillis();
+        this.executeTime = ms;
+    }
+
+    @Override
+    public long getDelay(TimeUnit unit) {
+        return unit.convert((this.startTime + this.executeTime) - System.currentTimeMillis(), TimeUnit.MILLISECONDS);
+    }
+
+    @Override
+    public int compareTo(Delayed delayed) {
+        JavaScriptTask task = (JavaScriptTask) delayed;
+        return (int) ((this.startTime + this.executeTime) - (task.getStartTime() + task.getExecuteTime()));
+    }
+
+    public Object getTask() {
+        return this.task;
+    }
+
+    public long getStartTime() {
+        return this.startTime;
+    }
+
+    public long getExecuteTime() {
+        return this.executeTime;
+    }
+}