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* Backup utility for MCP client configurations
* Creates timestamped backups before modifying config files
*/
import { existsSync, copyFileSync, mkdirSync } from "fs";
import { dirname, basename, join } from "path";
import { BackupOptions, BackupResult } from "./types";
/**
* Generate backup filename with timestamp
*/
export function generateBackupFilename(originalPath: string): string {
const dir = dirname(originalPath);
const name = basename(originalPath);
const timestamp = new Date().toISOString().replace(/[:.]/g, "-");
return join(dir, `${name}.backup-${timestamp}`);
}
/**
* Create a backup of a config file
*/
export function createBackup(options: BackupOptions): BackupResult {
const { configPath, backupDir } = options;
// Check if source file exists
if (!existsSync(configPath)) {
return {
created: false,
error: "Config file does not exist, no backup needed",
};
}
try {
// Determine backup path
let backupPath: string;
if (backupDir) {
// Ensure backup directory exists
Eif (!existsSync(backupDir)) {
mkdirSync(backupDir, { recursive: true });
}
const timestamp = new Date().toISOString().replace(/[:.]/g, "-");
backupPath = join(backupDir, `${basename(configPath)}.backup-${timestamp}`);
} else {
backupPath = generateBackupFilename(configPath);
}
// Copy file to backup location
copyFileSync(configPath, backupPath);
return {
created: true,
backupPath,
};
} catch (error) {
return {
created: false,
error: error instanceof Error ? error.message : String(error),
};
}
}
/**
* Restore a backup file
*/
export function restoreBackup(backupPath: string, targetPath: string): boolean {
try {
if (!existsSync(backupPath)) {
return false;
}
// Ensure target directory exists
const targetDir = dirname(targetPath);
if (!existsSync(targetDir)) {
mkdirSync(targetDir, { recursive: true });
}
copyFileSync(backupPath, targetPath);
return true;
} catch {
return false;
}
}
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