import { DrizzleDb } from './drizzle.js';

/**
 * Schema installer for setting up database
 */
export declare class SchemaInstaller {
    private readonly db;
    constructor(db: DrizzleDb);
    /**
     * Install database schema
     */
    install(adminPassphrase?: string): Promise<void>;
    /**
     * Create all database tables
     */
    private createTables;
    /**
     * Verify schema installation
     * Returns the schema version if installed, null otherwise
     */
    verify(): Promise<string | null>;
    /**
     * Current schema version - increment when adding migrations
     */
    private readonly CURRENT_SCHEMA_VERSION;
    /**
     * Setup initial system configuration
     */
    private setupInitialConfig;
    /**
     * Get current schema version from system_config
     */
    getCurrentSchemaVersion(): Promise<string | null>;
    /**
     * Update schema version in system_config
     */
    private updateSchemaVersion;
    /**
     * Run pending migrations
     * Returns the number of migrations applied
     */
    migrate(): Promise<number>;
    /**
     * Migration 1.1.0: Add transitioned_at column to subscriptions
     */
    private migrateTo_1_1_0;
    /**
     * Compare two version strings (e.g., "1.0.0" vs "1.1.0")
     * Returns: -1 if v1 < v2, 0 if v1 == v2, 1 if v1 > v2
     */
    private compareVersions;
    /**
     * Drop all tables (use with caution!)
     */
    /**
     * Drop all Subscrio tables (in reverse dependency order)
     */
    dropAll(): Promise<void>;
}
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