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metamask-extension/app/scripts/lib/rpc-method-middleware/handlers/get-provider-state.js
Erik Marks 3bf94164ac
@metamask/inpage-provider@^8.0.0 (#8640)
* @metamask/inpage-provider@^8.0.0
* Replace public config store with JSON-RPC notifications
* Encapsulate notification permissioning in permissions controller
* Update prefix of certain internal RPC methods and notifications
* Add accounts to getProviderState
* Send accounts with isUnlocked notification (#10007)
* Rename provider streams, notify provider of stream failures (#10006)
2020-12-08 11:48:47 -08:00

47 lines
1.4 KiB
JavaScript

import { MESSAGE_TYPE } from '../../enums'
/**
* This RPC method gets background state relevant to the provider.
* The background sends RPC notifications on state changes, but the provider
* first requests state on initialization.
*/
const getProviderState = {
methodNames: [MESSAGE_TYPE.GET_PROVIDER_STATE],
implementation: getProviderStateHandler,
}
export default getProviderState
/**
* @typedef {Object} ProviderStateHandlerResult
* @property {string} chainId - The current chain ID.
* @property {boolean} isUnlocked - Whether the extension is unlocked or not.
* @property {string} networkVersion - The current network ID.
*/
/**
* @typedef {Object} ProviderStateHandlerOptions
* @property {() => ProviderStateHandlerResult} getProviderState - A function that
* gets the current provider state.
*/
/**
* @param {import('json-rpc-engine').JsonRpcRequest<[]>} req - The JSON-RPC request object.
* @param {import('json-rpc-engine').JsonRpcResponse<ProviderStateHandlerResult>} res - The JSON-RPC response object.
* @param {Function} _next - The json-rpc-engine 'next' callback.
* @param {Function} end - The json-rpc-engine 'end' callback.
* @param {ProviderStateHandlerOptions} options
*/
async function getProviderStateHandler(
req,
res,
_next,
end,
{ getProviderState: _getProviderState },
) {
res.result = {
...(await _getProviderState(req.origin)),
}
return end()
}