Add Remind Me Later to SAI migration notification

app/_locales/en/messages.json

@@ -2,6 +2,9 @@
   "migrateSai": {
     "message": "A message from Maker: The new Multi-Collateral Dai token has been released. Your old tokens are now called Sai. Please upgrade your Sai tokens to the new Dai."
   },
+  "migrateSaiInfo": {
+    "message": "To dismiss this notification you can migrate your tokens or hide SAI from the token list."
+  },
   "migrate": {
     "message": "Migrate"
   },

app/scripts/controllers/app-state.js

@@ -13,6 +13,7 @@ class AppStateController {
     this.onInactiveTimeout = onInactiveTimeout || (() => {})
     this.store = new ObservableStore(extend({
       timeoutMinutes: 0,
+      mkrMigrationReminderTimestamp: null,
     }, initState))
     this.timer = null
 
@@ -23,6 +24,12 @@ class AppStateController {
     this._setInactiveTimeout(preferences.autoLogoutTimeLimit)
   }
 
+  setMkrMigrationReminderTimestamp (timestamp) {
+    this.store.updateState({
+      mkrMigrationReminderTimestamp: timestamp,
+    })
+  }
+
   /**
    * Sets the last active time to the current time
    * @return {void}

app/scripts/metamask-controller.js

@@ -508,6 +508,7 @@ module.exports = class MetamaskController extends EventEmitter {
 
       // AppStateController
       setLastActiveTime: nodeify(this.appStateController.setLastActiveTime, this.appStateController),
+      setMkrMigrationReminderTimestamp: nodeify(this.appStateController.setMkrMigrationReminderTimestamp, this.appStateController),
 
       // EnsController
       tryReverseResolveAddress: nodeify(this.ensController.reverseResolveAddress, this.ensController),

ui/app/components/app/dai-migration-component/dai-migration-notification.component.js

@@ -1,3 +1,4 @@
+import { DateTime } from 'luxon'
 import React, { PureComponent } from 'react'
 import PropTypes from 'prop-types'
 import HomeNotification from '../home-notification'
@@ -8,18 +9,37 @@ export default class DaiV1MigrationNotification extends PureComponent {
   }
 
   static defaultProps = {
+    mkrMigrationReminderTimestamp: null,
     string: '',
     symbol: '',
   }
 
   static propTypes = {
+    setMkrMigrationReminderTimestamp: PropTypes.func.isRequired,
+    mkrMigrationReminderTimestamp: PropTypes.string,
     string: PropTypes.string,
     symbol: PropTypes.string,
   }
 
+  remindMeLater = () => {
+    const nextWeek = DateTime.utc().plus({
+      days: 7,
+    })
+    this.props.setMkrMigrationReminderTimestamp(nextWeek.toString())
+  }
+
   render () {
     const { t } = this.context
-    const { string: balanceString, symbol } = this.props
+    const { mkrMigrationReminderTimestamp, string: balanceString, symbol } = this.props
+
+    if (mkrMigrationReminderTimestamp) {
+      const reminderDateTime = DateTime.fromISO(mkrMigrationReminderTimestamp, {
+        zone: 'UTC',
+      })
+      if (reminderDateTime > DateTime.utc()) {
+        return null
+      }
+    }
 
     if (!balanceString || !symbol) {
       return null
@@ -31,15 +51,27 @@ export default class DaiV1MigrationNotification extends PureComponent {
 
     return (
       <HomeNotification
-        descriptionText={t('migrateSai')}
+        descriptionText={(
+          <div>
+            {t('migrateSai')}
+            &nbsp;
+            <a
+              href="#"
+              onClick={() => {
+                window.open('https://blog.makerdao.com/multi-collateral-dai-is-live/', '_blank', 'noopener')
+              }}
+            >
+              {t('learnMore')}.
+            </a>
+          </div>
+        )}
         acceptText={t('migrate')}
         onAccept={() => {
           window.open('https://migrate.makerdao.com', '_blank', 'noopener')
         }}
-        ignoreText={t('learnMore')}
-        onIgnore={() => {
-          window.open('https://blog.makerdao.com/multi-collateral-dai-is-live/', '_blank', 'noopener')
-        }}
+        ignoreText={t('remindMeLater')}
+        onIgnore={this.remindMeLater}
+        infoText={t('migrateSaiInfo')}
       />
     )
   }

ui/app/components/app/dai-migration-component/dai-migration-notification.container.js

@@ -3,18 +3,32 @@ import { compose } from 'recompose'
 import DaiMigrationNotification from './dai-migration-notification.component'
 import withTokenTracker from '../../../helpers/higher-order-components/with-token-tracker'
 import { getSelectedAddress, getDaiV1Token } from '../../../selectors/selectors'
+import { setMkrMigrationReminderTimestamp } from '../../../store/actions'
 
 const mapStateToProps = (state) => {
+  const {
+    metamask: {
+      mkrMigrationReminderTimestamp,
+    },
+  } = state
+
   const userAddress = getSelectedAddress(state)
   const oldDai = getDaiV1Token(state)
 
   return {
+    mkrMigrationReminderTimestamp,
     userAddress,
     token: oldDai,
   }
 }
 
+const mapDispatchToProps = (dispatch) => {
+  return {
+    setMkrMigrationReminderTimestamp: (t) => dispatch(setMkrMigrationReminderTimestamp(t)),
+  }
+}
+
 export default compose(
-  connect(mapStateToProps),
+  connect(mapStateToProps, mapDispatchToProps),
   withTokenTracker,
 )(DaiMigrationNotification)

ui/app/store/actions.js

@@ -367,6 +367,7 @@ var actions = {
   // AppStateController-related actions
   SET_LAST_ACTIVE_TIME: 'SET_LAST_ACTIVE_TIME',
   setLastActiveTime,
+  setMkrMigrationReminderTimestamp,
 
   getContractMethodData,
   loadingMethoDataStarted,
@@ -2755,6 +2756,16 @@ function setLastActiveTime () {
   }
 }
 
+function setMkrMigrationReminderTimestamp (timestamp) {
+  return (dispatch) => {
+    background.setMkrMigrationReminderTimestamp(timestamp, (err) => {
+      if (err) {
+        return dispatch(actions.displayWarning(err.message))
+      }
+    })
+  }
+}
+
 function loadingMethoDataStarted () {
   return {
     type: actions.LOADING_METHOD_DATA_STARTED,