import { Method } from 'mppx';

/**
 * Bridge MPP server — verifies bridged cross-chain payments.
 *
 * The client pays on a source chain and calls the bridge settle endpoint.
 * The settle endpoint executes the cross-chain swap and pays the merchant
 * on the target chain. This server method verifies the target chain tx.
 *
 * Usage:
 * ```ts
 * import { Mppx } from 'mppx/server'
 * import { bridgeCharge } from '@relai-fi/x402/mpp/bridge-server'
 * import { evmCharge } from '@relai-fi/x402/mpp/evm-server'
 *
 * const mppx = Mppx.create({
 *   secretKey: process.env.MPP_SECRET_KEY,
 *   methods: [
 *     // Direct payment on SKALE
 *     evmCharge({ recipient: '0x...', tokenAddress: '0x...', chainId: 1187947933, rpcUrl: '...' }),
 *     // Cross-chain bridge to SKALE
 *     bridgeCharge({ recipient: '0x...', tokenAddress: '0x...', chainId: 1187947933, rpcUrl: '...' }),
 *   ],
 * })
 * ```
 */

interface BridgeChargeConfig {
    /** Target chain: recipient (merchant) EVM address */
    recipient: string;
    /** Target chain: ERC-20 token contract address */
    tokenAddress: string;
    /** Target chain: EVM chain ID */
    chainId: number;
    /** Target chain: RPC URL for verification */
    rpcUrl: string;
    /** Target chain: token decimals (default 6) */
    decimals?: number;
    /** Target chain: human-readable network name (e.g. "skale-base") */
    network?: string;
    /** Bridge settle endpoint (auto-discovered from /bridge/info if not set) */
    settleEndpoint?: string;
    /** Supported source chains in CAIP-2 (auto-discovered if not set) */
    supportedSourceChains?: string[];
    /** Supported source token addresses (auto-discovered if not set) */
    supportedSourceAssets?: string[];
    /** Bridge payTo map: { [caip2]: bridgeReceiverAddress } (auto-discovered if not set) */
    payTo?: Record<string, string>;
    /** Solana fee payer address (auto-discovered if not set) */
    feePayerSvm?: string;
    /** Bridge fee in basis points (auto-discovered if not set) */
    feeBps?: number;
    /** Payment facilitator URL (auto-discovered if not set) */
    paymentFacilitator?: string;
    /** RelAI API base URL for auto-discovery (default: https://api.relai.fi) */
    baseUrl?: string;
    /** Service key hash for tracking */
    serviceKeyHash?: string;
}
declare function bridgeCharge(config: BridgeChargeConfig): Method.AnyServer;

export { type BridgeChargeConfig, bridgeCharge };