From 4ba6832845ab2755e20d82ba8bec37a610e0c882 Mon Sep 17 00:00:00 2001
From: dymik739 <user@109.86.70.81>
Date: Sat, 11 Mar 2023 13:14:02 +0200
Subject: [PATCH] main class file code fixes

---
 labs/2/Main.java | 77 ++++++++++++++++++++++++++----------------------
 1 file changed, 42 insertions(+), 35 deletions(-)

diff --git a/labs/2/Main.java b/labs/2/Main.java
index 97a3ca3..13a03d6 100644
--- a/labs/2/Main.java
+++ b/labs/2/Main.java
@@ -1,18 +1,19 @@
 import java.util.Objects;
+import java.lang.Exception;
 
 import java.io.File;
 import java.io.FileNotFoundException;
 import java.util.Scanner;
-import java.io.FileWriter;
 
 import java.net.URL;
 import java.io.BufferedInputStream;
+import java.io.FileOutputStream;
 
 public class Main {
-    private boolean disable_networking = false;
 
-    public void main(String[] args) {
+    public static void main(String[] args) {
         boolean help_enqueued = false;
+        boolean allow_networking = true;
         int verbosity = 1;
         
         int p = 0;
@@ -20,13 +21,14 @@ public class Main {
             try {
                 if (Objects.equals(args[p], "-h")) {    
                     help_enqueued = true;
+                    p += 1;
                 }
                 else if (Objects.equals(args[p], "-v")) {
                     verbosity = Integer.parseInt(args[p+1]);
                     p += 2;
                 }
                 else if (Objects.equals(args[p], "--offline")) {
-                    disable_networking = true;
+                    allow_networking = false;
                     p += 2;
                 }
                 else {
@@ -42,48 +44,53 @@ public class Main {
         }
 
         if (help_enqueued) {
-            printHelp();
+            printHelp(allow_networking);
             System.exit(0);
         }
     }
 
-    public fetchResource(String remote_url, String output_filename) {
-        BufferedInputStream in = new BufferedInputStream(new URL(remote_url).openStream());
-        FileOutputStream fileOutputStream = new FileOutputStream()
-
-        byte dataBuffer[] = new byte[1024];
-        int bytesRead;
-        while ((bytesRead = in.read(dataBuffer, 0, 1024)) != -1) {
-            fileOutputStream.write(dataBuffer, 0, bytesRead);
+    private static void fetchResource(String remote_url, String output_filename) {
+        try {
+            BufferedInputStream in = new BufferedInputStream(new URL(remote_url).openStream());
+            FileOutputStream fileOutputStream = new FileOutputStream(output_filename);
+    
+            byte dataBuffer[] = new byte[1024];
+            int bytesRead;
+            while ((bytesRead = in.read(dataBuffer, 0, 1024)) != -1) {
+                fileOutputStream.write(dataBuffer, 0, bytesRead);
+            }
+        } catch (Exception e) {
+            System.out.println("[ERROR] Failed to fetch resource " + output_filename + "from " + remote_url + " due to the following exception: " + e);
         }
     }
 
-    public printHelp() {
-        String help_text = "";
-
+    private static void printHelp(boolean allow_net) {
         try {
             File help_file = new File("src/help.txt");
-            Scanner help_file_scanner = new Scanner(help_file);
 
-        } catch (FileNotFoundException e) {
-            System.err.println("[WARN] Help file missing.");
-            if (!disable_networking) {
-                System.err.println("[INFO] Trying to recover it from the git server");
-                fetchResource("http://139.162.162.130:3000/", "src/help.txt");
-                File help_file = new File("src/help.txt");
-                Scanner help_file_scanner = new Scanner(help_file);
-            } else {
-                System.err.println("[INFO] --offline flag is set, not recovering");
-                System.exit(1);
+            if (!help_file.exists()) {
+                System.err.println("[WARN] Help file is missing.");
+                if (allow_net) {
+                    System.err.println("[INFO] Trying to recover it from the git server");
+                    fetchResource("http://139.162.162.130:3000/dymik739/oop-labs-collection/raw/branch/lab2-dev/labs/2/src/help.txt", "src/help.txt");
+                } else {
+                    System.err.println("[INFO] Networking is disabled, not recovering");
+                    System.exit(1);
+                }
             }
+    
+            Scanner help_file_scanner = new Scanner(help_file);
+            String help_text = "";
+    
+            while (help_file_scanner.hasNextLine()) {
+                help_text += help_file_scanner.nextLine();
+            }
+    
+            help_file_scanner.close(); 
+            System.out.println(help_text);
+        } catch (Exception e) {
+            System.out.println("[ERROR] Failed to read help due to the following exception: " + e);
+            System.exit(1);
         }
-        
-        while (help_file_scanner.hasNextLine()) {
-            help_text += help_file_scanner.nextLine();
-        }
-
-        help_file_scanner.close();
-                    
-        System.out.println(help_text);
     }
 }