src/renderer/constants/action_types.js

@@ -165,6 +165,9 @@ export const CHANNEL_SUBSCRIBE = 'CHANNEL_SUBSCRIBE';
 export const CHANNEL_UNSUBSCRIBE = 'CHANNEL_UNSUBSCRIBE';
 export const HAS_FETCHED_SUBSCRIPTIONS = 'HAS_FETCHED_SUBSCRIPTIONS';
 export const SET_SUBSCRIPTION_LATEST = 'SET_SUBSCRIPTION_LATEST';
+export const CHECK_SUBSCRIPTION_STARTED = 'CHECK_SUBSCRIPTION_STARTED';
+export const CHECK_SUBSCRIPTION_COMPLETED = 'CHECK_SUBSCRIPTION_COMPLETED';
+export const CHECK_SUBSCRIPTIONS_SUBSCRIBE = 'CHECK_SUBSCRIPTIONS_SUBSCRIBE';
 
 // Video controls
 export const SET_VIDEO_PAUSE = 'SET_VIDEO_PAUSE';

src/renderer/redux/actions/app.js

@@ -11,6 +11,7 @@ import { doFetchDaemonSettings } from 'redux/actions/settings';
 import { doAuthenticate } from 'redux/actions/user';
 import { doBalanceSubscribe } from 'redux/actions/wallet';
 import { doPause } from 'redux/actions/media';
+import { doCheckSubscriptions } from 'redux/actions/subscriptions';
 
 import {
   selectCurrentModal,
@@ -298,6 +299,7 @@ export function doDaemonReady() {
       dispatch(doCheckUpgradeAvailable());
     }
     dispatch(doCheckUpgradeSubscribe());
+    dispatch(doCheckSubscriptions());
   };
 }
 

src/renderer/redux/actions/content.js

@@ -289,7 +289,7 @@ export function doLoadVideo(uri) {
   };
 }
 
-export function doPurchaseUri(uri) {
+export function doPurchaseUri(uri, specificCostInfo) {
   return (dispatch, getState) => {
     const state = getState();
     const balance = selectBalance(state);
@@ -322,7 +322,7 @@ export function doPurchaseUri(uri) {
       return;
     }
 
-    const costInfo = makeSelectCostInfoForUri(uri)(state);
+    const costInfo = makeSelectCostInfoForUri(uri)(state) || specificCostInfo;
     const { cost } = costInfo;
 
     if (cost > balance) {
@@ -359,8 +359,8 @@ export function doFetchClaimsByChannel(uri, page) {
       const claimResult = result[uri] || {};
       const { claims_in_channel: claimsInChannel, returned_page: returnedPage } = claimResult;
 
-      if(claimResult && claimResult.claims_in_channel && claimResult.claims_in_channel.length) {
-        let latest = claimResult.claims_in_channel[0];
+      if(claimsInChannel && claimsInChannel.length) {
+        let latest = claimsInChannel[0];
         dispatch(setSubscriptionLatest({
           channelName: latest.channel_name,
           uri: `${latest.channel_name}#${latest.value.publisherSignature.certificateId}`

src/renderer/redux/actions/subscriptions.js

@@ -1,6 +1,12 @@
 // @flow
 import * as ACTIONS from 'constants/action_types';
-import type { Subscription, Dispatch } from 'redux/reducers/subscriptions';
+import type { Subscription, Dispatch, SubscriptionState } from 'redux/reducers/subscriptions';
+import { selectSubscriptions } from 'redux/selectors/subscriptions';
+import Lbry from 'lbry';
+import { doPurchaseUri } from 'redux/actions/content';
+import { doNavigate } from 'redux/actions/navigation';
+
+const CHECK_SUBSCRIPTIONS_INTERVAL = 10 * 60 * 1000;
 
 export const doChannelSubscribe = (subscription: Subscription) => (dispatch: Dispatch) =>
   dispatch({
@@ -14,6 +20,50 @@ export const doChannelUnsubscribe = (subscription: Subscription) => (dispatch: D
     data: subscription,
   });
 
+export const doCheckSubscriptions = () => (dispatch: Dispatch, getState: () => SubscriptionState) => {
+  const checkSubscriptionsTimer = setInterval(
+    () => selectSubscriptions(getState()).map((subscription: Subscription) => dispatch(doCheckSubscription(subscription))),
+    CHECK_SUBSCRIPTIONS_INTERVAL
+  );
+  dispatch({
+    type: ACTIONS.CHECK_SUBSCRIPTIONS_SUBSCRIBE,
+    data: { checkSubscriptionsTimer },
+  });
+};
+
+export const doCheckSubscription = (subscription: Subscription) => (dispatch: Dispatch) => {
+  dispatch({
+    type: ACTIONS.CHECK_SUBSCRIPTION_STARTED,
+    data: subscription,
+  });
+
+  Lbry.claim_list_by_channel({ uri: subscription.uri, page: 1 }).then(result => {
+    const claimResult = result[subscription.uri] || {};
+    const { claims_in_channel: claimsInChannel } = claimResult;
+
+    let count = claimsInChannel.reduce((prev, cur, index) => `${cur.name}#${cur.claim_id}` === subscription.latest ? index : prev, -1)
+
+    if(count !== 0) {
+      if(!claimsInChannel[0].value.stream.metadata.fee) {
+        dispatch(doPurchaseUri(`${claimsInChannel[0].name}#${claimsInChannel[0].claim_id}`, {cost: 0}));
+      }
+
+      const notif = new window.Notification(subscription.channelName, {
+        body: `Posted ${claimsInChannel[0].value.stream.metadata.title}${count > 1 ? ` and ${count-1} other new items` : '' }${count < 0 ? ' and 9+ other new items' : ''}`,
+        silent: false,
+      });
+      notif.onclick = () => {
+        dispatch(doNavigate('/show', { uri: `lbry://${claimsInChannel[0].name}#${claimsInChannel[0].claim_id}` }))
+      };
+    }
+
+    dispatch({
+      type: ACTIONS.CHECK_SUBSCRIPTION_COMPLETED,
+      data: subscription
+    });
+  });
+}
+
 export const setSubscriptionLatest = (subscription: Subscription, uri: string) => (dispatch: Dispatch) =>
 {
   return dispatch({

src/renderer/redux/reducers/subscriptions.js

@@ -37,7 +37,15 @@ type setSubscriptionLatest = {
   }
 }
 
-export type Action = doChannelSubscribe | doChannelUnsubscribe | HasFetchedSubscriptions | setSubscriptionLatest;
+type CheckSubscriptionStarted = {
+  type: ACTIONS.CHECK_SUBSCRIPTION_STARTED
+}
+
+type CheckSubscriptionCompleted = {
+  type: ACTIONS.CHECK_SUBSCRIPTION_COMPLETED
+}
+
+export type Action = doChannelSubscribe | doChannelUnsubscribe | HasFetchedSubscriptions | setSubscriptionLatest | CheckSubscriptionStarted | CheckSubscriptionCompleted | Function;
 export type Dispatch = (action: Action) => any;
 
 const defaultState = {