Start work on editing window

src/main/java/de/bommels05/befatorweb/BefatorWeb.java

@@ -142,6 +142,8 @@ public class BefatorWeb {
             }
         });
         LinkDatabase.LINKS_TABLE.getAll().forEach(BefatorWeb::addLinkToGraph);
+
+        new FileBrowserWindow().setVisible(true);
     }
 
     public static void addLinkToGraph(LinkDBEntry link) {

src/main/java/de/bommels05/befatorweb/SavedPaged.java

@@ -47,6 +47,10 @@ public record SavedPaged(String url, ContentType type, StatusCode status) {
             throw new IllegalArgumentException("Invalid content type: " + contentType);
         }
 
+        public boolean isText() {
+            return this != GIF && this != JPEG && this != PNG && this != ICO && this != BINARY;
+        }
+
         @Override
         public String toString() {
             return value;

src/main/java/de/bommels05/befatorweb/SiteCache.java

@@ -116,4 +116,22 @@ public class SiteCache {
         }
     }
 
+    private static String fixUrlPath(String url, SavedPaged.ContentType type) {
+        if (url.contains("?")) {
+            url = url.substring(0, url.indexOf("?"));
+        }
+
+        if (url.endsWith("/")) {
+            url = url + "index";
+        }
+        if (!url.substring(url.indexOf('/') + 1).contains(".")) {
+            return url + switch (type) {
+                case BINARY, PLAIN -> "";
+                case REDIRECT -> ".REDIRECT";
+                default -> "." + type.name().toLowerCase();
+            };
+        }
+        return url;
+    }
+
 }

src/main/java/de/bommels05/befatorweb/gui/FileBrowserWindow.java

@@ -0,0 +1,81 @@
+package de.bommels05.befatorweb.gui;
+
+import de.bommels05.befatorweb.SavedPaged;
+import de.bommels05.befatorweb.SiteCache;
+
+import javax.swing.*;
+import javax.swing.tree.DefaultMutableTreeNode;
+import java.nio.charset.StandardCharsets;
+import java.util.ArrayList;
+import java.util.List;
+import java.awt.*;
+import java.util.StringJoiner;
+import java.util.stream.Stream;
+
+public class FileBrowserWindow extends JFrame {
+
+    public FileBrowserWindow() {
+        super("Befator Web");
+
+        DefaultMutableTreeNode root = new DefaultMutableTreeNode("Websites");
+        List<String> pages = new ArrayList<>(SiteCache.getPages().stream().map(SavedPaged::url).toList());
+        addPages(pages, root);
+
+        JPanel editorPane = new JPanel();
+        JTextArea textArea = new JTextArea();
+        textArea.setEditable(true);
+        editorPane.add(textArea);
+        JTree files = new JTree(root);
+        files.addTreeSelectionListener(e -> {
+            StringJoiner joiner = new StringJoiner("/");
+            for (Object o : e.getPath().getPath()) {
+                if (!o.toString().equals("Websites")) {
+                    joiner.add(o.toString());
+                }
+            }
+            SavedPaged page = SiteCache.getPage(joiner.toString());
+            if (page == null && joiner.toString().endsWith("/index.html")) {
+                page = SiteCache.getPage(joiner.toString().substring(0, joiner.toString().lastIndexOf('/') + 1));
+            }
+            if (page != null) {
+                if (page.type().isText()) {
+                    textArea.setText(new String(page.getContent()));
+                } else {
+                    textArea.setText("Binary File");
+                }
+            } else {
+                textArea.setText("");
+            }
+        });
+        JPopupMenu menu = new JPopupMenu();
+        JMenuItem notepad = new JMenuItem("Notepad++");
+        menu.add(notepad);
+        files.setComponentPopupMenu(menu);
+        JSplitPane content = new JSplitPane(JSplitPane.HORIZONTAL_SPLIT, new JScrollPane(files), new JScrollPane(editorPane));
+        this.add(content);
+
+        this.pack();
+    }
+
+    private void addPages(List<String> pages, DefaultMutableTreeNode root) {
+        while (!pages.isEmpty()) {
+            String url = pages.get(0);
+            if (url.contains("/")) {
+                String parent = url.substring(0, url.indexOf('/'));
+                List<String> children = pages.stream().filter(s -> s.startsWith(parent + "/")).toList();
+                List<String> subPages = children.stream().map(s -> s.substring(url.indexOf("/") + 1)).toList();
+                DefaultMutableTreeNode parentNode = new DefaultMutableTreeNode(parent);
+                addPages(new ArrayList<>(subPages), parentNode);
+                root.add(parentNode);
+                pages.removeAll(children);
+            } else {
+                if (!url.isEmpty()) {
+                    root.add(new DefaultMutableTreeNode(url));
+                } else {
+                    root.add(new DefaultMutableTreeNode("index.html"));
+                }
+                pages.remove(0);
+            }
+        }
+    }
+}