migrate to typescript

src/utils/youtubeApi.ts

@@ -0,0 +1,69 @@
+import {config} from '../config';
+import {Logger} from './logger';
+import * as redis from './redis';
+// @ts-ignore
+import YouTubeAPI from 'youtube-api';
+
+import {YouTubeAPI as youtubeApiTest} from '../../test/youtubeMock';
+
+let _youtubeApi: {
+    listVideos: (videoID: string, callback: (err: string | boolean, data: any) => void) => void
+};
+// If in test mode, return a mocked youtube object
+//   otherwise return an authenticated youtube api
+if (config.mode === "test") {
+    _youtubeApi = youtubeApiTest;
+}
+else {
+    _youtubeApi = YouTubeAPI;
+
+    YouTubeAPI.authenticate({
+        type: "key",
+        key: config.youtubeAPIKey,
+    });
+
+    // YouTubeAPI.videos.list wrapper with cacheing
+    _youtubeApi.listVideos = (videoID: string, callback: (err: string | boolean, data: any) => void) => {
+        const part = 'contentDetails,snippet';
+        if (videoID.length !== 11 || videoID.includes(".")) {
+            callback("Invalid video ID", undefined);
+            return;
+        }
+
+        const redisKey = "youtube.video." + videoID;
+        redis.get(redisKey, (getErr: string, result: string) => {
+            if (getErr || !result) {
+                Logger.debug("redis: no cache for video information: " + videoID);
+                YouTubeAPI.videos.list({
+                    part,
+                    id: videoID,
+                }, (ytErr: boolean | string, data: any) => {
+                    if (!ytErr) {
+                        // Only set cache if data returned
+                        if (data.items.length > 0) {
+                            redis.set(redisKey, JSON.stringify(data), (setErr: string) => {
+                                if (setErr) {
+                                    Logger.warn(setErr);
+                                } else {
+                                    Logger.debug("redis: video information cache set for: " + videoID);
+                                }
+                                callback(false, data); // don't fail
+                            });
+                        } else {
+                            callback(false, data); // don't fail
+                        }
+                    } else {
+                        callback(ytErr, data);
+                    }
+                });
+            } else {
+                Logger.debug("redis: fetched video information from cache: " + videoID);
+                callback(getErr, JSON.parse(result));
+            }
+        });
+    };
+}
+
+export {
+    _youtubeApi as YouTubeAPI
+}