first commit

app/utils/fileUtils.ts

@@ -0,0 +1,105 @@
+import ignore from 'ignore';
+
+// Common patterns to ignore, similar to .gitignore
+export const IGNORE_PATTERNS = [
+  'node_modules/**',
+  '.git/**',
+  'dist/**',
+  'build/**',
+  '.next/**',
+  'coverage/**',
+  '.cache/**',
+  '.vscode/**',
+  '.idea/**',
+  '**/*.log',
+  '**/.DS_Store',
+  '**/npm-debug.log*',
+  '**/yarn-debug.log*',
+  '**/yarn-error.log*',
+];
+
+export const MAX_FILES = 1000;
+export const ig = ignore().add(IGNORE_PATTERNS);
+
+export const generateId = () => Math.random().toString(36).substring(2, 15);
+
+export const isBinaryFile = async (file: File): Promise<boolean> => {
+  const chunkSize = 1024;
+  const buffer = new Uint8Array(await file.slice(0, chunkSize).arrayBuffer());
+
+  for (let i = 0; i < buffer.length; i++) {
+    const byte = buffer[i];
+
+    if (byte === 0 || (byte < 32 && byte !== 9 && byte !== 10 && byte !== 13)) {
+      return true;
+    }
+  }
+
+  return false;
+};
+
+export const shouldIncludeFile = (path: string): boolean => {
+  return !ig.ignores(path);
+};
+
+const readPackageJson = async (files: File[]): Promise<{ scripts?: Record<string, string> } | null> => {
+  const packageJsonFile = files.find((f) => f.webkitRelativePath.endsWith('package.json'));
+
+  if (!packageJsonFile) {
+    return null;
+  }
+
+  try {
+    const content = await new Promise<string>((resolve, reject) => {
+      const reader = new FileReader();
+      reader.onload = () => resolve(reader.result as string);
+      reader.onerror = reject;
+      reader.readAsText(packageJsonFile);
+    });
+
+    return JSON.parse(content);
+  } catch (error) {
+    console.error('Error reading package.json:', error);
+    return null;
+  }
+};
+
+export const detectProjectType = async (
+  files: File[],
+): Promise<{ type: string; setupCommand: string; followupMessage: string }> => {
+  const hasFile = (name: string) => files.some((f) => f.webkitRelativePath.endsWith(name));
+
+  if (hasFile('package.json')) {
+    const packageJson = await readPackageJson(files);
+    const scripts = packageJson?.scripts || {};
+
+    // Check for preferred commands in priority order
+    const preferredCommands = ['dev', 'start', 'preview'];
+    const availableCommand = preferredCommands.find((cmd) => scripts[cmd]);
+
+    if (availableCommand) {
+      return {
+        type: 'Node.js',
+        setupCommand: `npm install && npm run ${availableCommand}`,
+        followupMessage: `Found "${availableCommand}" script in package.json. Running "npm run ${availableCommand}" after installation.`,
+      };
+    }
+
+    return {
+      type: 'Node.js',
+      setupCommand: 'npm install',
+      followupMessage:
+        'Would you like me to inspect package.json to determine the available scripts for running this project?',
+    };
+  }
+
+  if (hasFile('index.html')) {
+    return {
+      type: 'Static',
+      setupCommand: 'npx --yes serve',
+      followupMessage: '',
+    };
+  }
+
+  return { type: '', setupCommand: '', followupMessage: '' };
+};