/**
 * Flap Portal — 只读查询（reader）
 */
import { Contract } from 'ethers';
import type { PortalConfig, QuoteExactInputParams, TokenStateV2, TokenStateV3, TokenStateV4, TokenStateV5, TokenStateV7, TokenStateV8 } from './types.js';
export declare const PORTAL_ABI: string[];
export declare class FlapPortal {
    private rpcUrl;
    protected portal: string;
    protected contract: Contract;
    private buyFeeRate;
    private sellFeeRate;
    constructor(cfg: PortalConfig);
    getTokenV2(token: string): Promise<TokenStateV2>;
    getTokenV3(token: string): Promise<TokenStateV3>;
    getTokenV4(token: string): Promise<TokenStateV4>;
    getTokenV5(token: string): Promise<TokenStateV5>;
    /**
     * 获取代币状态 V7（包含毕业相关信息）
     * 注意：仅部分链支持 V7（如 XLayer v5.7+），不支持的链会 revert
     */
    getTokenV7(token: string): Promise<TokenStateV7>;
    mapTokenStateV8(raw: unknown[]): TokenStateV8;
    /**
     * BSC TOKEN_TAXED_V3：买卖税在 buyTaxRate / sellTaxRate。
     * 用 V7 读会把残留 taxRate（常见 100 bps）当成当前税。
     */
    getTokenV8(token: string): Promise<TokenStateV8>;
    getTokenV8Safe(token: string): Promise<TokenStateV8>;
    /**
     * 计算距离毕业还需多少 OKB/ETH（含手续费）
     * @param state TokenStateV5 或 TokenStateV7
     * @returns 毕业相关信息
     */
    computeRemainingToGraduation(state: TokenStateV5 | TokenStateV7): {
        remainingOkb: string;
        graduationReserve: string;
        currentReserve: string;
        isGraduated: boolean;
        progressPercent: string;
    };
    computePriceAndProgress(state: TokenStateV5): {
        price: string;
        progress: string;
    };
    quoteBuy(state: TokenStateV5, inputEth: string): string;
    quoteSell(state: TokenStateV5, inputToken: string): string;
    previewBuy(token: string, ethAmount: bigint): Promise<bigint>;
    previewSell(token: string, tokenAmount: bigint): Promise<bigint>;
    quoteExactInput(params: QuoteExactInputParams): Promise<bigint>;
    getFeeRate(): Promise<{
        buyFeeRate: bigint;
        sellFeeRate: bigint;
    }>;
    nonce(): Promise<bigint>;
    version(): Promise<string>;
    getLocks(token: string): Promise<bigint[]>;
}