import { BaseRestClient } from "./base";
import { BinanceRestClient } from "./binance/rest";

/** 交易所 ID 到 RestClient 构造器的注册表 */
const registry: Record<string, () => BaseRestClient> = {
    binance: () => new BinanceRestClient(),
};

/**
 * 创建交易所 REST 客户端。
 *
 * 根据交易所 ID 返回对应的 RestClient 实例，
 * 外部无需感知具体子类。
 *
 * @param exchangeId - 交易所标识（如 "binance"）
 * @returns 对应交易所的 RestClient 实例
 * @throws 如果 exchangeId 未注册
 */
export function createRestClient(exchangeId: string): BaseRestClient {
    const factory = registry[exchangeId];
    if (!factory) {
        const supported = Object.keys(registry).join(", ");
        throw new Error(
            `[exchanges] 不支持的交易所: "${exchangeId}"，当前支持: ${supported}`,
        );
    }
    return factory();
}

export { BaseRestClient } from "./base";
export { BinanceRestClient } from "./binance/rest";
export { KLINE_INTERVAL_MS } from "./constants";