Make ports configurable

src/main/java/tech/nevets/beerestapi/Main.java

@@ -1,44 +1,27 @@
 package tech.nevets.beerestapi;
 
-import io.javalin.Javalin;
-
-import java.io.BufferedReader;
-import java.io.FileReader;
-import java.io.IOException;
-import java.util.ArrayList;
+import java.util.List;
 import java.util.Random;
 import java.util.concurrent.ThreadLocalRandom;
 
+import static spark.Spark.*;
+
 public class Main {
-    public static ArrayList<String> urls = new ArrayList<>();
+    public static List<String> urls = List.of(
+            "vetlog.jpg",
+            ""
+    );
 
     public static void main(String[] args) {
-        getImageUrlList();
-        Javalin app = Javalin.create().start(8080);
-
-        app.get("/bee", ctx -> {
-            ctx.json("{\"link\": \"https://img.nevets.tech/" + getRandomUrl() + "\"}");
-        });
-    }
-
-    public static void getImageUrlList() {
-        String line;
-        BufferedReader in = null;
-
-        try {
-            in = new BufferedReader(new FileReader("./image-urls.txt"));
-            while ((line = in.readLine()) != null) {
-                urls.add(line);
-            }
-        } catch (IOException e) {
-            e.printStackTrace();
-        } finally {
-            try {
-                in.close();
-            } catch (IOException e) {
-                e.printStackTrace();
-            }
+        if (args[0] != null) {
+            port(Integer.parseInt(args[0]));
+        } else {
+            port(8080);
         }
+
+        get("/bee", (req, res) -> {
+            return "{\"link\": \"https://img.nevets.tech/" + getRandomUrl() + "\"}";
+        });
     }
 
     public static String getRandomUrl() {