feat(format): Enhance format module with rollback, diff reporting, and improved parallel execution

ts/mod_format/classes.changecache.ts

@@ -0,0 +1,144 @@
+import * as plugins from './mod.plugins.js';
+import * as paths from '../paths.js';
+
+export interface IFileCache {
+  path: string;
+  checksum: string;
+  modified: number;
+  size: number;
+}
+
+export interface ICacheManifest {
+  version: string;
+  lastFormat: number;
+  files: IFileCache[];
+}
+
+export class ChangeCache {
+  private cacheDir: string;
+  private manifestPath: string;
+  private cacheVersion = '1.0.0';
+  
+  constructor() {
+    this.cacheDir = plugins.path.join(paths.cwd, '.nogit', 'gitzone-cache');
+    this.manifestPath = plugins.path.join(this.cacheDir, 'manifest.json');
+  }
+  
+  async initialize(): Promise<void> {
+    await plugins.smartfile.fs.ensureDir(this.cacheDir);
+  }
+  
+  async getManifest(): Promise<ICacheManifest> {
+    const exists = await plugins.smartfile.fs.fileExists(this.manifestPath);
+    if (!exists) {
+      return {
+        version: this.cacheVersion,
+        lastFormat: 0,
+        files: []
+      };
+    }
+    
+    const content = await plugins.smartfile.fs.toStringSync(this.manifestPath);
+    return JSON.parse(content);
+  }
+  
+  async saveManifest(manifest: ICacheManifest): Promise<void> {
+    await plugins.smartfile.memory.toFs(JSON.stringify(manifest, null, 2), this.manifestPath);
+  }
+  
+  async hasFileChanged(filePath: string): Promise<boolean> {
+    const absolutePath = plugins.path.isAbsolute(filePath) 
+      ? filePath 
+      : plugins.path.join(paths.cwd, filePath);
+    
+    // Check if file exists
+    const exists = await plugins.smartfile.fs.fileExists(absolutePath);
+    if (!exists) {
+      return true; // File doesn't exist, so it's "changed" (will be created)
+    }
+    
+    // Get current file stats
+    const stats = await plugins.smartfile.fs.stat(absolutePath);
+    const content = await plugins.smartfile.fs.toStringSync(absolutePath);
+    const currentChecksum = this.calculateChecksum(content);
+    
+    // Get cached info
+    const manifest = await this.getManifest();
+    const cachedFile = manifest.files.find(f => f.path === filePath);
+    
+    if (!cachedFile) {
+      return true; // Not in cache, so it's changed
+    }
+    
+    // Compare checksums
+    return cachedFile.checksum !== currentChecksum || 
+           cachedFile.size !== stats.size ||
+           cachedFile.modified !== stats.mtimeMs;
+  }
+  
+  async updateFileCache(filePath: string): Promise<void> {
+    const absolutePath = plugins.path.isAbsolute(filePath) 
+      ? filePath 
+      : plugins.path.join(paths.cwd, filePath);
+    
+    // Get current file stats
+    const stats = await plugins.smartfile.fs.stat(absolutePath);
+    const content = await plugins.smartfile.fs.toStringSync(absolutePath);
+    const checksum = this.calculateChecksum(content);
+    
+    // Update manifest
+    const manifest = await this.getManifest();
+    const existingIndex = manifest.files.findIndex(f => f.path === filePath);
+    
+    const cacheEntry: IFileCache = {
+      path: filePath,
+      checksum,
+      modified: stats.mtimeMs,
+      size: stats.size
+    };
+    
+    if (existingIndex !== -1) {
+      manifest.files[existingIndex] = cacheEntry;
+    } else {
+      manifest.files.push(cacheEntry);
+    }
+    
+    manifest.lastFormat = Date.now();
+    await this.saveManifest(manifest);
+  }
+  
+  async getChangedFiles(filePaths: string[]): Promise<string[]> {
+    const changedFiles: string[] = [];
+    
+    for (const filePath of filePaths) {
+      if (await this.hasFileChanged(filePath)) {
+        changedFiles.push(filePath);
+      }
+    }
+    
+    return changedFiles;
+  }
+  
+  async clean(): Promise<void> {
+    const manifest = await this.getManifest();
+    const validFiles: IFileCache[] = [];
+    
+    // Remove entries for files that no longer exist
+    for (const file of manifest.files) {
+      const absolutePath = plugins.path.isAbsolute(file.path) 
+        ? file.path 
+        : plugins.path.join(paths.cwd, file.path);
+      
+      if (await plugins.smartfile.fs.fileExists(absolutePath)) {
+        validFiles.push(file);
+      }
+    }
+    
+    manifest.files = validFiles;
+    await this.saveManifest(manifest);
+  }
+  
+  private calculateChecksum(content: string | Buffer): string {
+    return plugins.crypto.createHash('sha256').update(content).digest('hex');
+  }
+}