import invariant from "tiny-invariant";
import { toHex, zeroAddress } from "viem";
import {
    DISABLE_GAS_SPONSORSHIP_PARAM,
    REFUND_ADDRESS_PARAM,
    REFUND_NATIVE_ETH_PARAM,
    RENEGADE_API_KEY_HEADER,
    REQUEST_EXTERNAL_MATCH_ROUTE,
} from "../constants.js";
import type { AuthConfig } from "../createAuthConfig.js";
import { BaseError, type BaseErrorType } from "../errors/base.js";
import type { ExternalOrder, SponsoredMatchResponse } from "../types/externalMatch.js";
import { postWithSymmetricKey } from "../utils/http.js";

export type GetExternalMatchBundleParameters = {
    order: ExternalOrder;
    doGasEstimation?: boolean;
    receiverAddress?: `0x${string}`;
    // TODO: Replace this with `disableGasSponsorship` to match API parameter name
    useGasSponsorship?: boolean;
    refundAddress?: `0x${string}`;
    refundNativeEth?: boolean;
};

export type GetExternalMatchBundleReturnType = SponsoredMatchResponse;

export type GetExternalMatchBundleErrorType = BaseErrorType;

export async function getExternalMatchBundle(
    config: AuthConfig,
    parameters: GetExternalMatchBundleParameters,
): Promise<GetExternalMatchBundleReturnType> {
    const {
        order: {
            base,
            quote,
            side,
            baseAmount = BigInt(0),
            quoteAmount = BigInt(0),
            minFillSize = BigInt(0),
        },
        doGasEstimation = false,
        receiverAddress = "",
        useGasSponsorship = true,
        refundAddress = zeroAddress,
        refundNativeEth = false,
    } = parameters;
    const { apiSecret, apiKey } = config;
    invariant(apiSecret, "API secret not specified in config");
    invariant(apiKey, "API key not specified in config");
    const symmetricKey = config.utils.b64_to_hex_hmac_key(apiSecret);

    const body = config.utils.new_external_order(
        base,
        quote,
        side,
        toHex(baseAmount),
        toHex(quoteAmount),
        toHex(minFillSize),
        doGasEstimation,
        receiverAddress,
    );

    let url = config.getBaseUrl(REQUEST_EXTERNAL_MATCH_ROUTE);
    const searchParams = new URLSearchParams({
        [DISABLE_GAS_SPONSORSHIP_PARAM]: (!useGasSponsorship).toString(),
        [REFUND_ADDRESS_PARAM]: refundAddress,
        [REFUND_NATIVE_ETH_PARAM]: refundNativeEth.toString(),
    });
    url += `?${searchParams.toString()}`;

    const res = await postWithSymmetricKey(config, {
        url,
        body,
        key: symmetricKey,
        headers: {
            [RENEGADE_API_KEY_HEADER]: apiKey,
        },
    });
    if (!res.match_bundle) {
        throw new BaseError("No match bundle found");
    }
    return res;
}