import simpleGit, { SimpleGit } from 'simple-git';
import * as path from 'path';
import * as fs from 'fs';
import * as os from 'os';
export class GithubService {
private git: SimpleGit;
private tempDir: string;
constructor() {
this.git = simpleGit();
this.tempDir = path.join(os.tmpdir(), 'codeguard-scans');
if (!fs.existsSync(this.tempDir)) {
fs.mkdirSync(this.tempDir, { recursive: true });
}
}
/**
* Validates if a string is a git URL
*/
isValidUrl(url: string): boolean {
try {
const trimmed = url.trim();
// Allow http, https, git, ssh
return /^(?:http|https|git|ssh)(?::\/\/|@)/.test(trimmed);
} catch {
return false;
}
}
/**
* Clones a repository to a temporary directory
* @param url Repository URL
* @param token Optional Git Token (PAT)
*/
async cloneRepo(url: string, token?: string): Promise<string> {
let finalUrl = url;
// Inject token if provided (Basic Auth)
if (token) {
// Check if https
if (url.startsWith('https://')) {
const urlWithoutProtocol = url.replace('https://', '');
finalUrl = `https://${token}@${urlWithoutProtocol}`;
}
}
const repoName = this.extractRepoName(url);
const timestamp = Date.now();
const destPath = path.join(this.tempDir, `${repoName}_${timestamp}`);
if (fs.existsSync(destPath)) {
fs.rmSync(destPath, { recursive: true, force: true });
}
fs.mkdirSync(destPath, { recursive: true });
console.error(`[GithubService] Cloning ${url} to ${destPath}...`);
try {
await this.git.clone(finalUrl, destPath);
return destPath;
} catch (error) {
console.error('[GithubService] Clone failed:', error);
throw new Error(`Failed to clone repository: ${error instanceof Error ? error.message : String(error)}`);
}
}
/**
* Extracts repo name from URL
*/
private extractRepoName(url: string): string {
const parts = url.split('/');
let name = parts[parts.length - 1];
if (name.endsWith('.git')) {
name = name.replace('.git', '');
}
return name;
}
/**
* Clean up a scanned directory
*/
async cleanup(pathToRemove: string): Promise<void> {
if (pathToRemove.startsWith(this.tempDir) && fs.existsSync(pathToRemove)) {
fs.rmSync(pathToRemove, { recursive: true, force: true });
}
}
}
