export class TextFilePolicy {
  constructor() {
    this.maxSizeBytes = 1 * 1024 * 1024;
    this.allowedExtensions = new Set([
      ".txt", ".md", ".json", ".xml", ".yaml", ".yml", ".js", ".jsx", ".ts", ".tsx",
      ".css", ".html", ".py", ".java", ".go", ".rs", ".sql", ".sh", ".env", ".ini", ".toml"
    ]);
  }

  isTextPath(path) {
    const idx = path.lastIndexOf(".");
    if (idx === -1) return true;
    const ext = path.slice(idx).toLowerCase();
    return this.allowedExtensions.has(ext);
  }

  isSupportedFile(path, size) {
    return this.isTextPath(path) && size <= this.maxSizeBytes;
  }
}