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/**
* @license
* Copyright 2025 Google LLC
* SPDX-License-Identifier: Apache-2.0
*/
import * as fs from 'fs';
import * as path from 'path';
/**
* WorkspaceContext manages multiple workspace directories and validates paths
* against them. This allows the CLI to operate on files from multiple directories
* in a single session.
*/
export class WorkspaceContext {
private directories: Set<string>;
private initialDirectories: Set<string>;
/**
* Creates a new WorkspaceContext with the given initial directory and optional additional directories.
* @param initialDirectory The initial working directory (usually cwd)
* @param additionalDirectories Optional array of additional directories to include
*/
constructor(initialDirectory: string, additionalDirectories: string[] = []) {
this.directories = new Set<string>();
this.initialDirectories = new Set<string>();
this.addDirectoryInternal(initialDirectory);
this.addInitialDirectoryInternal(initialDirectory);
for (const dir of additionalDirectories) {
this.addDirectoryInternal(dir);
this.addInitialDirectoryInternal(dir);
}
}
/**
* Adds a directory to the workspace.
* @param directory The directory path to add (can be relative or absolute)
* @param basePath Optional base path for resolving relative paths (defaults to cwd)
*/
addDirectory(directory: string, basePath: string = process.cwd()): void {
this.addDirectoryInternal(directory, basePath);
}
/**
* Internal method to add a directory with validation.
*/
private addDirectoryInternal(
directory: string,
basePath: string = process.cwd(),
): void {
const absolutePath = path.isAbsolute(directory)
? directory
: path.resolve(basePath, directory);
if (!fs.existsSync(absolutePath)) {
throw new Error(`Directory does not exist: ${absolutePath}`);
}
const stats = fs.statSync(absolutePath);
if (!stats.isDirectory()) {
throw new Error(`Path is not a directory: ${absolutePath}`);
}
let realPath: string;
try {
realPath = fs.realpathSync(absolutePath);
} catch (_error) {
throw new Error(`Failed to resolve path: ${absolutePath}`);
}
this.directories.add(realPath);
}
private addInitialDirectoryInternal(
directory: string,
basePath: string = process.cwd(),
): void {
const absolutePath = path.isAbsolute(directory)
? directory
: path.resolve(basePath, directory);
if (!fs.existsSync(absolutePath)) {
throw new Error(`Directory does not exist: ${absolutePath}`);
}
const stats = fs.statSync(absolutePath);
if (!stats.isDirectory()) {
throw new Error(`Path is not a directory: ${absolutePath}`);
}
let realPath: string;
try {
realPath = fs.realpathSync(absolutePath);
} catch (_error) {
throw new Error(`Failed to resolve path: ${absolutePath}`);
}
this.initialDirectories.add(realPath);
}
/**
* Gets a copy of all workspace directories.
* @returns Array of absolute directory paths
*/
getDirectories(): readonly string[] {
return Array.from(this.directories);
}
getInitialDirectories(): readonly string[] {
return Array.from(this.initialDirectories);
}
setDirectories(directories: readonly string[]): void {
this.directories.clear();
for (const dir of directories) {
this.addDirectoryInternal(dir);
}
}
/**
* Checks if a given path is within any of the workspace directories.
* @param pathToCheck The path to validate
* @returns True if the path is within the workspace, false otherwise
*/
isPathWithinWorkspace(pathToCheck: string): boolean {
try {
const absolutePath = path.resolve(pathToCheck);
let resolvedPath = absolutePath;
if (fs.existsSync(absolutePath)) {
try {
resolvedPath = fs.realpathSync(absolutePath);
} catch (_error) {
return false;
}
}
for (const dir of this.directories) {
if (this.isPathWithinRoot(resolvedPath, dir)) {
return true;
}
}
return false;
} catch (_error) {
return false;
}
}
/**
* Checks if a path is within a given root directory.
* @param pathToCheck The absolute path to check
* @param rootDirectory The absolute root directory
* @returns True if the path is within the root directory, false otherwise
*/
private isPathWithinRoot(
pathToCheck: string,
rootDirectory: string,
): boolean {
const relative = path.relative(rootDirectory, pathToCheck);
return (
!relative.startsWith(`..${path.sep}`) &&
relative !== '..' &&
!path.isAbsolute(relative)
);
}
}
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