@metamask/snaps-rpc-methods/dist/permitted/resolveInterface.mjs

MetaMask Snaps JSON-RPC method implementations

import { rpcErrors } from "@metamask/rpc-errors";
import { StructError, create, object, string } from "@metamask/superstruct";
import { JsonStruct } from "@metamask/utils";
const hookNames = {
    resolveInterface: true,
};
export const resolveInterfaceHandler = {
    methodNames: ['snap_resolveInterface'],
    implementation: getResolveInterfaceImplementation,
    hookNames,
};
const ResolveInterfaceParametersStruct = object({
    id: string(),
    value: JsonStruct,
});
/**
 * The `snap_resolveInterface` method implementation.
 *
 * @param req - The JSON-RPC request object.
 * @param res - The JSON-RPC response object.
 * @param _next - The `json-rpc-engine` "next" callback. Not used by this
 * function.
 * @param end - The `json-rpc-engine` "end" callback.
 * @param hooks - The RPC method hooks.
 * @param hooks.resolveInterface - The function to resolve the interface.
 * @returns Nothing.
 */
async function getResolveInterfaceImplementation(req, res, _next, end, { resolveInterface }) {
    const { params } = req;
    try {
        const validatedParams = getValidatedParams(params);
        const { id, value } = validatedParams;
        await resolveInterface(id, value);
        res.result = null;
    }
    catch (error) {
        return end(error);
    }
    return end();
}
/**
 * Validate the resolveInterface method `params` and returns them cast to the correct
 * type. Throws if validation fails.
 *
 * @param params - The unvalidated params object from the method request.
 * @returns The validated resolveInterface method parameter object.
 */
function getValidatedParams(params) {
    try {
        return create(params, ResolveInterfaceParametersStruct);
    }
    catch (error) {
        if (error instanceof StructError) {
            throw rpcErrors.invalidParams({
                message: `Invalid params: ${error.message}.`,
            });
        }
        /* istanbul ignore next */
        throw rpcErrors.internal();
    }
}
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