feat: CTA UI preview

packages/cta-ui-base/package.json

@@ -32,6 +32,7 @@
     "@tanstack/react-query": "^5.66.5",
     "@uiw/codemirror-theme-github": "^4.23.10",
     "@uiw/react-codemirror": "^4.23.10",
+    "@webcontainer/api": "^1.3.5",
     "chalk": "^5.4.1",
     "class-variance-authority": "^0.7.1",
     "clsx": "^2.1.1",

packages/cta-ui-base/src/components/file-navigator.tsx

@@ -14,9 +14,12 @@ import { getFileClass, twClasses } from '../file-classes'
 
 import FileViewer from './file-viewer'
 import FileTree from './file-tree'
+import WebContainerProvider from './web-container-provider'
+import { WebContainerPreview } from './webcontainer-preview'
 
 import { Label } from './ui/label'
 import { Switch } from './ui/switch'
+import { Tabs, TabsList, TabsTrigger, TabsContent } from './ui/tabs'
 
 import type { FileTreeItem } from '../types'
 
@@ -181,27 +184,69 @@ export default function FileNavigator() {
 
   const ready = useReady()
 
+  // Prepare project files for WebContainer
+  const webContainerFiles = useMemo(() => {
+    console.log('Preparing WebContainer files, tree:', tree)
+    if (!tree) {
+      console.log('Tree is empty, returning empty array')
+      return []
+    }
+    const files = Object.entries(tree).map(([path, content]) => ({
+      path,
+      content,
+    }))
+    console.log('WebContainer files prepared:', files.length, 'files')
+    return files
+  }, [tree])
+
   if (!ready) {
     return null
   }
 
   return (
-    <div className="bg-white dark:bg-black/50 rounded-lg p-2 sm:p-4">
-      {mode === 'add' && <Filters />}
-      <div className="flex flex-row @container">
-        <div className="w-1/3 @6xl:w-1/4 bg-gray-500/10 rounded-l-lg">
-          <FileTree selectedFile={selectedFile} tree={fileTree} />
-        </div>
-        <div className="w-2/3 @6xl:w-3/4">
-          {selectedFile && modifiedFileContents ? (
-            <FileViewer
-              filePath={selectedFile}
-              originalFile={originalFileContents}
-              modifiedFile={modifiedFileContents}
-            />
-          ) : null}
-        </div>
+    <WebContainerProvider projectFiles={webContainerFiles}>
+      <div className="bg-white dark:bg-black/50 rounded-lg p-2 sm:p-4">
+        {mode === 'add' && <Filters />}
+        <Tabs defaultValue="files" className="w-full">
+          <TabsList className="mb-1 h-7 p-0.5 bg-transparent border border-gray-300 dark:border-gray-700">
+            <TabsTrigger
+              value="files"
+              className="text-xs h-6 px-3 py-0 data-[state=active]:bg-gray-200 dark:data-[state=active]:bg-gray-800"
+            >
+              Files
+            </TabsTrigger>
+            <TabsTrigger
+              value="preview"
+              className="text-xs h-6 px-3 py-0 data-[state=active]:bg-gray-200 dark:data-[state=active]:bg-gray-800"
+            >
+              Preview
+            </TabsTrigger>
+          </TabsList>
+
+          <TabsContent value="files" className="mt-0">
+            <div className="flex flex-row @container">
+              <div className="w-1/3 @6xl:w-1/4 bg-gray-500/10 rounded-l-lg">
+                <FileTree selectedFile={selectedFile} tree={fileTree} />
+              </div>
+              <div className="w-2/3 @6xl:w-3/4">
+                {selectedFile && modifiedFileContents ? (
+                  <FileViewer
+                    filePath={selectedFile}
+                    originalFile={originalFileContents}
+                    modifiedFile={modifiedFileContents}
+                  />
+                ) : null}
+              </div>
+            </div>
+          </TabsContent>
+
+          <TabsContent value="preview" className="mt-0">
+            <div className="h-[800px]">
+              <WebContainerPreview />
+            </div>
+          </TabsContent>
+        </Tabs>
       </div>
-    </div>
+    </WebContainerProvider>
   )
 }

packages/cta-ui-base/src/components/file-viewer.tsx

@@ -45,10 +45,18 @@ export default function FileViewer({
   }
   const language = getLanguage(filePath)
 
-  if (!originalFile || originalFile === modifiedFile) {
+  // Display placeholder for binary files
+  const displayModified = modifiedFile.startsWith('base64::')
+    ? '<binary file>'
+    : modifiedFile
+  const displayOriginal = originalFile?.startsWith('base64::')
+    ? '<binary file>'
+    : originalFile
+
+  if (!displayOriginal || displayOriginal === displayModified) {
     return (
       <CodeMirror
-        value={modifiedFile}
+        value={displayModified}
         theme={theme}
         height="100vh"
         width="100%"
@@ -60,8 +68,14 @@ export default function FileViewer({
   }
   return (
     <CodeMirrorMerge orientation="a-b" theme={theme} className="text-lg">
-      <CodeMirrorMerge.Original value={originalFile} extensions={[language]} />
-      <CodeMirrorMerge.Modified value={modifiedFile} extensions={[language]} />
+      <CodeMirrorMerge.Original
+        value={displayOriginal}
+        extensions={[language]}
+      />
+      <CodeMirrorMerge.Modified
+        value={displayModified}
+        extensions={[language]}
+      />
     </CodeMirrorMerge>
   )
 }

packages/cta-ui-base/src/components/web-container-provider.tsx

@@ -0,0 +1,42 @@
+import { createContext, useEffect, useState } from 'react'
+import { useStore } from 'zustand'
+import createWebContainerStore from '../hooks/use-webcontainer-store'
+
+export const WebContainerContext = createContext<ReturnType<
+  typeof createWebContainerStore
+> | null>(null)
+
+export default function WebContainerProvider({
+  children,
+  projectFiles,
+}: {
+  children: React.ReactNode
+  projectFiles: Array<{ path: string; content: string }>
+}) {
+  console.log(
+    'WebContainerProvider rendering with',
+    projectFiles.length,
+    'files',
+  )
+  const [containerStore] = useState(() => createWebContainerStore(true))
+
+  const updateProjectFiles = useStore(
+    containerStore,
+    (state) => state.updateProjectFiles,
+  )
+
+  useEffect(() => {
+    console.log(
+      'WebContainerProvider useEffect triggered with',
+      projectFiles.length,
+      'files',
+    )
+    updateProjectFiles(projectFiles)
+  }, [updateProjectFiles, projectFiles])
+
+  return (
+    <WebContainerContext.Provider value={containerStore}>
+      {children}
+    </WebContainerContext.Provider>
+  )
+}