Add support for images

frontend/src/App.scss

@@ -22,6 +22,21 @@ $navbar-height: 64px;
   }
 }
 
+.image-preview {
+  width: 100%;
+  height: 100%;
+  display: flex;
+  justify-content: center;
+  align-items: center;
+  overflow: auto;
+}
+
+.image-preview img {
+  max-width: 100%;
+  max-height: 100%;
+  object-fit: contain;
+}
+
 .page-content {
   padding: 0 $padding;
 }

frontend/src/components/FileTree.js

@@ -7,6 +7,7 @@ import {
   GitCommit,
   Plus,
   Trash,
+  Image,
 } from '@geist-ui/icons';
 
 const FileTree = ({
@@ -37,8 +38,15 @@ const FileTree = ({
     );
   };
 
-  const renderIcon = ({ type }) =>
-    type === 'directory' ? <Folder /> : <File />;
+  const isImageFile = (fileName) => {
+    const imageExtensions = ['.jpg', '.jpeg', '.png', '.gif', '.webp', '.svg'];
+    return imageExtensions.some((ext) => fileName.toLowerCase().endsWith(ext));
+  };
+
+  const renderIcon = ({ type, name }) => {
+    if (type === 'directory') return <Folder />;
+    return isImageFile(name) ? <Image /> : <File />;
+  };
 
   return (
     <div>

frontend/src/components/MainContent.js

@@ -1,4 +1,4 @@
-import React, { useState } from 'react';
+import React, { useState, useEffect } from 'react';
 import {
   Grid,
   Breadcrumbs,
@@ -14,7 +14,17 @@ import { Code, Eye } from '@geist-ui/icons';
 import Editor from './Editor';
 import FileTree from './FileTree';
 import MarkdownPreview from './MarkdownPreview';
-import { commitAndPush, saveFileContent, deleteFile } from '../services/api';
+import {
+  commitAndPush,
+  saveFileContent,
+  deleteFile,
+  getFileUrl,
+} from '../services/api';
+
+const isImageFile = (filePath) => {
+  const imageExtensions = ['.jpg', '.jpeg', '.png', '.gif', '.webp', '.svg'];
+  return imageExtensions.some((ext) => filePath.toLowerCase().endsWith(ext));
+};
 
 const MainContent = ({
   content,
@@ -33,6 +43,21 @@ const MainContent = ({
   const { setToast } = useToasts();
   const [newFileModalVisible, setNewFileModalVisible] = useState(false);
   const [newFileName, setNewFileName] = useState('');
+  const [isCurrentFileImage, setIsCurrentFileImage] = useState(false);
+
+  useEffect(() => {
+    const currentFileIsImage = isImageFile(selectedFile);
+    setIsCurrentFileImage(currentFileIsImage);
+    if (currentFileIsImage) {
+      setActiveTab('preview');
+    }
+  }, [selectedFile]);
+
+  const handleTabChange = (value) => {
+    if (!isCurrentFileImage || value === 'preview') {
+      setActiveTab(value);
+    }
+  };
 
   const handlePull = async () => {
     try {
@@ -153,13 +178,17 @@ const MainContent = ({
         >
           <div className="content-header">
             {renderBreadcrumbs()}
-            <Tabs value={activeTab} onChange={setActiveTab}>
-              <Tabs.Item label={<Code />} value="source" />
+            <Tabs value={activeTab} onChange={handleTabChange}>
+              <Tabs.Item
+                label={<Code />}
+                value="source"
+                disabled={isCurrentFileImage}
+              />
               <Tabs.Item label={<Eye />} value="preview" />
             </Tabs>
           </div>
           <div className="content-body">
-            {activeTab === 'source' ? (
+            {activeTab === 'source' && !isCurrentFileImage ? (
               <Editor
                 content={content}
                 onChange={onContentChange}
@@ -167,8 +196,23 @@ const MainContent = ({
                 filePath={selectedFile}
                 themeType={themeType}
               />
+            ) : isCurrentFileImage ? (
+              <div className="image-preview">
+                <img
+                  src={getFileUrl(selectedFile)}
+                  alt={selectedFile}
+                  style={{
+                    maxWidth: '100%',
+                    maxHeight: '100%',
+                    objectFit: 'contain',
+                  }}
+                />
+              </div>
             ) : (
-              <MarkdownPreview content={content} />
+              <MarkdownPreview
+                content={content}
+                baseUrl={window.API_BASE_URL}
+              />
             )}
           </div>
         </Grid>

frontend/src/components/MarkdownPreview.js

@@ -6,7 +6,7 @@ import { Prism as SyntaxHighlighter } from 'react-syntax-highlighter';
 import { vscDarkPlus } from 'react-syntax-highlighter/dist/esm/styles/prism';
 import 'katex/dist/katex.min.css';
 
-const MarkdownPreview = ({ content }) => {
+const MarkdownPreview = ({ content, baseUrl }) => {
   return (
     <div className="markdown-preview">
       <ReactMarkdown
@@ -30,6 +30,14 @@ const MarkdownPreview = ({ content }) => {
               </code>
             );
           },
+          img({ src, alt, ...props }) {
+            // Check if the src is a relative path
+            if (src && !src.startsWith('http') && !src.startsWith('data:')) {
+              // Prepend the baseUrl to create an absolute path
+              src = `${baseUrl}/files/${src}`;
+            }
+            return <img src={src} alt={alt} {...props} />;
+          },
         }}
       >
         {content}

frontend/src/hooks/useFileManagement.js

@@ -13,6 +13,11 @@ const DEFAULT_FILE = {
   content: '# Welcome to NovaMD\n\nStart editing here!',
 };
 
+const isImageFile = (filePath) => {
+  const imageExtensions = ['.jpg', '.jpeg', '.png', '.gif', '.webp', '.svg'];
+  return imageExtensions.some((ext) => filePath.toLowerCase().endsWith(ext));
+};
+
 const useFileManagement = (gitEnabled = false) => {
   const [content, setContent] = useState(DEFAULT_FILE.content);
   const [files, setFiles] = useState([]);
@@ -76,8 +81,12 @@ const useFileManagement = (gitEnabled = false) => {
     }
 
     try {
-      const fileContent = await fetchFileContent(filePath);
-      setContent(fileContent);
+      if (!isImageFile(filePath)) {
+        const fileContent = await fetchFileContent(filePath);
+        setContent(fileContent);
+      } else {
+        setContent(''); // Set empty content for image files
+      }
       setSelectedFile(filePath);
       setIsNewFile(false);
       setHasUnsavedChanges(false);

frontend/src/services/api.js

@@ -127,3 +127,7 @@ export const commitAndPush = async (message) => {
     throw error;
   }
 };
+
+export const getFileUrl = (filePath) => {
+  return `${API_BASE_URL}/files/${filePath}`;
+};