chore(server): Move api-server in to it's own DIR

api-server/server/rss/index.js

@@ -0,0 +1,86 @@
+import _ from 'lodash';
+import compareDesc from 'date-fns/compare_desc';
+import debug from 'debug';
+
+import { getMediumFeed } from './medium';
+import { getLybsynFeed } from './lybsyn';
+
+const log = debug('fcc:rss:news-feed');
+
+const fiveMinutes = 1000 * 60 * 5;
+
+class NewsFeed {
+  constructor() {
+
+    this.state = {
+      readyState: false,
+      mediumFeed: [],
+      lybsynFeed: [],
+      combinedFeed: []
+    };
+    this.refreshFeeds();
+
+    setInterval(this.refreshFeeds, fiveMinutes);
+  }
+
+  setState = stateUpdater => {
+    const newState = stateUpdater(this.state);
+    this.state = _.merge({}, this.state, newState);
+    return;
+  }
+
+  refreshFeeds = () => {
+    const currentFeed = this.state.combinedFeed.slice(0);
+    log('grabbing feeds');
+    return Promise.all([
+    getMediumFeed(),
+    getLybsynFeed()
+  ]).then(
+    ([mediumFeed, lybsynFeed]) => this.setState(
+      state => ({
+        ...state,
+        mediumFeed,
+        lybsynFeed
+      })
+    ))
+    .then(() => {
+      log('crossing the streams');
+      const { mediumFeed, lybsynFeed} = this.state;
+      const combinedFeed = [ ...mediumFeed, ...lybsynFeed ].sort((a, b) => {
+        return compareDesc(a.isoDate, b.isoDate);
+      });
+      this.setState(state => ({
+        ...state,
+        combinedFeed,
+        readyState: true
+      }));
+    })
+    .catch(err => {
+      console.log(err);
+      this.setState(state => ({
+        ...state,
+        combinedFeed: currentFeed
+      }));
+    });
+  }
+
+
+    getFeed = () => new Promise((resolve) => {
+      let notReadyCount = 0;
+
+      function waitForReady() {
+        log('notReadyCount', notReadyCount);
+        notReadyCount++;
+        return this.state.readyState || notReadyCount === 5 ?
+          resolve(this.state.combinedFeed) :
+          setTimeout(waitForReady, 100);
+      }
+      log('are we ready?', this.state.readyState);
+      return this.state.readyState ?
+        resolve(this.state.combinedFeed) :
+        setTimeout(waitForReady, 100);
+    })
+
+}
+
+export default NewsFeed;