import type { CurrencyCode, ConversionResult, ExchangeRatesResult, ConvertParams, ExchangeRatesParams } from '@mixxtor/currencyx-js';
import { BaseCurrencyExchange } from '@mixxtor/currencyx-js';
import type { DatabaseConfig } from '../types.js';
import type { CacheService } from '@adonisjs/cache/types';
import { PROVIDER_CURRENCY_MODEL } from '../symbols.js';
import type { LucidModel } from '@adonisjs/lucid/types/model';
export declare class DatabaseExchange<Model extends LucidModel = LucidModel> extends BaseCurrencyExchange {
    #private;
    [PROVIDER_CURRENCY_MODEL]: InstanceType<Model>;
    readonly name = "database";
    protected model?: Model;
    private columns;
    private configModel?;
    private cache?;
    private cacheSetupPromise?;
    private config;
    constructor(config: DatabaseConfig<Model>);
    /**
     * Imports the model from the provider, returns and caches it
     * for further operations.
     */
    protected getModel(): Promise<Model>;
    /**
     * Imports the cache service from the provider, returns and caches it
     * for further operations.
     */
    protected getCacheService(): Promise<CacheService>;
    /**
     * Convert currency using database rates
     */
    convert(params: ConvertParams): Promise<ConversionResult>;
    /**
     * Get latest rates (required abstract method)
     */
    latestRates(params?: ExchangeRatesParams & {
        cache?: boolean;
    }): Promise<ExchangeRatesResult>;
    /**
     * Clear the currency cache
     */
    clearCache(): Promise<void>;
    /**
     * Refresh currency data from database
     */
    refreshCurrencyData(): Promise<void>;
    /**
     * Get convert rate (required abstract method)
     */
    getConvertRate(from: CurrencyCode, to: CurrencyCode): Promise<number | undefined>;
    /**
     * Cleanup method for graceful shutdown
     */
    cleanup(): Promise<void>;
}