Refactor .env file copying script to implement custom gitignore handling

This update enhances the script by replacing the glob-based search for .env files with a custom directory traversal method that respects .gitignore rules. The new implementation allows for more precise control over which files are included, improving the script's functionality in various project structures.

scripts/move-env-to-worktree.ts

@@ -1,22 +1,128 @@
 #!/usr/bin/env tsx
 
 import { promises as fs } from 'node:fs';
-import { join, relative, dirname } from 'node:path';
+import { join, relative, dirname, basename } from 'node:path';
-import { glob } from 'glob';
 
 const SOURCE_REPO = join(process.env.HOME!, 'buster', 'buster');
 const TARGET_REPO = process.cwd();
 
+interface GitignoreRules {
+  patterns: string[];
+  directory: string;
+}
+
+// Simple gitignore pattern matcher
+function matchesGitignorePattern(path: string, pattern: string): boolean {
+  // Remove leading/trailing slashes
+  pattern = pattern.trim();
+  if (pattern.startsWith('#') || pattern === '') return false;
+  
+  const isNegation = pattern.startsWith('!');
+  if (isNegation) pattern = pattern.slice(1);
+  
+  // Handle directory-only patterns (ending with /)
+  const isDirPattern = pattern.endsWith('/');
+  if (isDirPattern) pattern = pattern.slice(0, -1);
+  
+  // Simple glob matching (basic implementation)
+  // Convert pattern to regex
+  let regexPattern = pattern
+    .replace(/\./g, '\\.')
+    .replace(/\*/g, '[^/]*')
+    .replace(/\?/g, '[^/]')
+    .replace(/\*\*/g, '.*');
+  
+  // If pattern doesn't start with /, it can match anywhere
+  if (!pattern.startsWith('/')) {
+    regexPattern = `(^|/)${regexPattern}`;
+  } else {
+    regexPattern = `^${regexPattern.slice(1)}`;
+  }
+  
+  if (isDirPattern) {
+    regexPattern += '(/|$)';
+  } else {
+    regexPattern += '(/|$)';
+  }
+  
+  const regex = new RegExp(regexPattern);
+  const matches = regex.test(path);
+  
+  return isNegation ? !matches : matches;
+}
+
+async function loadGitignoreRules(dir: string): Promise<string[]> {
+  try {
+    const gitignorePath = join(dir, '.gitignore');
+    const content = await fs.readFile(gitignorePath, 'utf-8');
+    return content
+      .split('\n')
+      .map(line => line.trim())
+      .filter(line => line && !line.startsWith('#'));
+  } catch {
+    return [];
+  }
+}
+
+function isIgnored(path: string, gitignoreStack: GitignoreRules[]): boolean {
+  for (const rules of gitignoreStack) {
+    const relativePath = relative(rules.directory, path);
+    if (relativePath && !relativePath.startsWith('..')) {
+      for (const pattern of rules.patterns) {
+        if (matchesGitignorePattern(relativePath, pattern)) {
+          return true;
+        }
+      }
+    }
+  }
+  return false;
+}
+
+async function findEnvFiles(dir: string, baseDir: string = dir): Promise<string[]> {
+  const envFiles: string[] = [];
+  
+  async function walkDir(currentDir: string, gitignoreStack: GitignoreRules[]) {
+    try {
+      // Load gitignore rules for current directory
+      const localRules = await loadGitignoreRules(currentDir);
+      if (localRules.length > 0) {
+        gitignoreStack = [...gitignoreStack, { patterns: localRules, directory: currentDir }];
+      }
+      
+      const entries = await fs.readdir(currentDir, { withFileTypes: true });
+      
+      for (const entry of entries) {
+        const fullPath = join(currentDir, entry.name);
+        const relativePath = relative(baseDir, fullPath);
+        
+        // Check if this path is ignored
+        if (isIgnored(fullPath, gitignoreStack)) {
+          continue;
+        }
+        
+        if (entry.isDirectory()) {
+          // Always skip .git directory
+          if (entry.name === '.git') continue;
+          await walkDir(fullPath, gitignoreStack);
+        } else if (entry.name.startsWith('.env')) {
+          envFiles.push(relativePath);
+        }
+      }
+    } catch (error) {
+      // Skip directories we can't read
+      console.warn(`Skipping directory: ${currentDir}`);
+    }
+  }
+  
+  await walkDir(dir, []);
+  return envFiles;
+}
+
 async function copyEnvFiles() {
   try {
     console.info(`Searching for .env files in ${SOURCE_REPO}...`);
     
-    const envFiles = await glob('**/.env*', {
+    const envFiles = await findEnvFiles(SOURCE_REPO);
-      cwd: SOURCE_REPO,
-      absolute: false,
-      dot: true,
-      ignore: ['**/node_modules/**', '**/.git/**']
-    });
 
     if (envFiles.length === 0) {
       console.warn('No .env files found in source repository');