import Store from 'electron-store';

/**
 * Key Manager - Manages user encryption keys stored in electron-store
 */

const store = new Store({
    encryptionKey: 'eritors-scribe-secure-key'
});

/**
 * Get user encryption key from secure store
 * @param userId - User ID
 * @returns User's encryption key or null if not found
 */
export function getUserEncryptionKey(userId: string): string {
    const key: string | undefined = store.get(`encryptionKey-${userId}`) as string | undefined;
    if (key === undefined) {
        throw new Error(`Unknown encryptionKey`);
    }
    return key;
}

/**
 * Set user encryption key in secure store
 * @param userId - User ID
 * @param encryptionKey - Encryption key to store
 */
export function setUserEncryptionKey(userId: string, encryptionKey: string): void {
    store.set(`encryptionKey-${userId}`, encryptionKey);
}

/**
 * Check if user has an encryption key
 * @param userId - User ID
 * @returns True if key exists
 */
export function hasUserEncryptionKey(userId: string): boolean {
    return store.has(`encryptionKey-${userId}`);
}

/**
 * Delete user encryption key
 * @param userId - User ID
 */
export function deleteUserEncryptionKey(userId: string): void {
    store.delete(`encryptionKey-${userId}`);
}