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58 lines
1.6 KiB
58 lines
1.6 KiB
import { ethErrors } from 'eth-rpc-errors';
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import { MESSAGE_TYPE } from '../../../../../shared/constants/app';
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/**
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* This internal method is used by our external provider to send metadata about
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* permission subjects so that we can e.g. display a proper name and icon in
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* our UI.
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*/
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const sendMetadata = {
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methodNames: [MESSAGE_TYPE.SEND_METADATA],
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implementation: sendMetadataHandler,
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hookNames: {
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addSubjectMetadata: true,
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subjectType: true,
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},
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};
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export default sendMetadata;
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/**
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* @typedef {Record<string, Function>} SendMetadataOptions
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* @property {Function} addSubjectMetadata - A function that records subject
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* metadata, bound to the requesting origin.
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* @property {string} subjectType - The type of the requesting origin / subject.
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*/
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/**
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* @param {import('json-rpc-engine').JsonRpcRequest<unknown>} req - The JSON-RPC request object.
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* @param {import('json-rpc-engine').JsonRpcResponse<true>} res - The JSON-RPC response object.
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* @param {Function} _next - The json-rpc-engine 'next' callback.
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* @param {Function} end - The json-rpc-engine 'end' callback.
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* @param {SendMetadataOptions} options
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*/
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function sendMetadataHandler(
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req,
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res,
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_next,
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end,
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{ addSubjectMetadata, subjectType },
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) {
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const { origin, params } = req;
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if (params && typeof params === 'object' && !Array.isArray(params)) {
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const { icon = null, name = null, ...remainingParams } = params;
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addSubjectMetadata({
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...remainingParams,
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iconUrl: icon,
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name,
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subjectType,
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origin,
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});
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} else {
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return end(ethErrors.rpc.invalidParams({ data: params }));
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}
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res.result = true;
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return end();
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}
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