/**
 * Configuration Manager
 *
 * Handles reading/writing configuration and credentials files
 * with proper security measures.
 */
import { CredentialsFile, GlobalConfigFile, ProjectLinkFile, SyncQueueFile, SyncQueueItem } from "./types";
/**
 * Global Configuration Manager
 */
export declare const globalConfig: {
    /**
     * Read global configuration, merging defaults and environment variables
     */
    read(): GlobalConfigFile;
    /**
     * Write global configuration
     */
    write(config: Partial<GlobalConfigFile>): void;
    /**
     * Get a specific configuration value
     */
    get<K extends keyof GlobalConfigFile>(key: K): GlobalConfigFile[K];
    /**
     * Set a specific configuration value
     */
    set<K_1 extends keyof GlobalConfigFile>(key: K_1, value: GlobalConfigFile[K_1]): void;
    /**
     * Reset configuration to defaults
     */
    reset(): void;
};
/**
 * Credentials Manager
 */
export declare const credentials: {
    /**
     * Read stored credentials
     */
    read(): CredentialsFile | null;
    /**
     * Write credentials (with secure file permissions)
     */
    write(creds: Omit<CredentialsFile, "updatedAt" | "cliVersion">): void;
    /**
     * Clear stored credentials
     */
    clear(): void;
    /**
     * Check if credentials exist and are not expired
     */
    isValid(): boolean;
    /**
     * Check if credentials exist (may be expired)
     */
    exists(): boolean;
    /**
     * Check if token needs refresh (expires within 5 minutes)
     */
    needsRefresh(): boolean;
};
/**
 * Project Link Manager
 */
export declare const projectLink: {
    /**
     * Read project link configuration
     */
    read(projectDir?: string): ProjectLinkFile | null;
    /**
     * Write project link configuration
     */
    write(link: ProjectLinkFile, projectDir?: string): void;
    /**
     * Remove project link
     */
    remove(projectDir?: string): void;
    /**
     * Check if project is linked
     */
    exists(projectDir?: string): boolean;
    /**
     * Update sync metadata after successful sync
     */
    updateSyncMetadata(metadata: {
        lastSyncedAt: string;
        localSchemaHash: string;
        remoteSchemaHash: string;
    }, projectDir?: string): void;
};
/**
 * Sync Queue Manager
 */
export declare const syncQueue: {
    /**
     * Read sync queue
     */
    read(projectDir?: string): SyncQueueFile;
    /**
     * Write sync queue
     */
    write(queue: SyncQueueFile, projectDir?: string): void;
    /**
     * Add operation to queue
     */
    add(operation: Omit<SyncQueueItem, "id" | "queuedAt" | "retryCount">, projectDir?: string): string;
    /**
     * Remove operation from queue
     */
    remove(id: string, projectDir?: string): void;
    /**
     * Get pending operations count
     */
    count(projectDir?: string): number;
    /**
     * Clear all operations
     */
    clear(projectDir?: string): void;
    /**
     * Update operation retry count and error
     */
    updateRetry(id: string, error: string, projectDir?: string): void;
};
/**
 * Create a backup of a file
 */
export declare function createBackup(filePath: string, projectDir?: string): string;