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global.window = global
const SwGlobalListener = require('sw-stream/lib/sw-global-listener.js')
const connectionListener = new SwGlobalListener(global)
const setupMultiplex = require('../../app/scripts/lib/stream-utils.js').setupMultiplex
const DbController = require('idb-global')
const SwPlatform = require('../../app/scripts/platforms/sw')
const MetamaskController = require('../../app/scripts/metamask-controller')
const Migrator = require('../../app/scripts/lib/migrator/')
const migrations = require('../../app/scripts/migrations/')
const firstTimeState = require('../../app/scripts/first-time-state')
const STORAGE_KEY = 'metamask-config'
const METAMASK_DEBUG = process.env.METAMASK_DEBUG
global.metamaskPopupIsOpen = false
const log = require('loglevel')
global.log = log
log.setDefaultLevel(METAMASK_DEBUG ? 'debug' : 'warn')
global.addEventListener('install', function (event) {
event.waitUntil(global.skipWaiting())
})
global.addEventListener('activate', function (event) {
event.waitUntil(global.clients.claim())
})
log.debug('inside:open')
// state persistence
const dbController = new DbController({
key: STORAGE_KEY,
})
start().catch(log.error)
async function start () {
log.debug('MetaMask initializing...')
const initState = await loadStateFromPersistence()
await setupController(initState)
log.debug('MetaMask initialization complete.')
}
//
// State and Persistence
//
async function loadStateFromPersistence () {
// migrations
const migrator = new Migrator({ migrations })
const initialState = migrator.generateInitialState(firstTimeState)
dbController.initialState = initialState
const versionedData = await dbController.open()
const migratedData = await migrator.migrateData(versionedData)
await dbController.put(migratedData)
return migratedData.data
}
async function setupController (initState, client) {
//
// MetaMask Controller
//
const platform = new SwPlatform()
const controller = new MetamaskController({
// platform specific implementation
platform,
// User confirmation callbacks:
showUnconfirmedMessage: noop,
unlockAccountMessage: noop,
showUnapprovedTx: noop,
// initial state
initState,
})
global.metamaskController = controller
controller.store.subscribe(async (state) => {
try {
const versionedData = await versionifyData(state)
await dbController.put(versionedData)
} catch (e) { console.error('METAMASK Error:', e) }
})
async function versionifyData (state) {
const rawData = await dbController.get()
return {
data: state,
meta: rawData.meta,
}
}
//
// connect to other contexts
//
connectionListener.on('remote', (portStream, messageEvent) => {
log.debug('REMOTE CONECTION FOUND***********')
connectRemote(portStream, messageEvent.data.context)
})
function connectRemote (connectionStream, context) {
var isMetaMaskInternalProcess = (context === 'popup')
if (isMetaMaskInternalProcess) {
// communication with popup
controller.setupTrustedCommunication(connectionStream, 'MetaMask')
global.metamaskPopupIsOpen = true
} else {
// communication with page
setupUntrustedCommunication(connectionStream, context)
}
}
function setupUntrustedCommunication (connectionStream, originDomain) {
// setup multiplexing
var mx = setupMultiplex(connectionStream)
// connect features
controller.setupProviderConnection(mx.createStream('provider'), originDomain)
controller.setupPublicConfig(mx.createStream('publicConfig'))
}
}
// // this will be useful later but commented out for linting for now (liiiinting)
// function sendMessageToAllClients (message) {
// global.clients.matchAll().then(function (clients) {
// clients.forEach(function (client) {
// client.postMessage(message)
// })
// })
// }
function noop () {}
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