feat: add redis (#1390)

docs/reference/notification.md

@@ -142,6 +142,12 @@ Generate token at https://pushover.net/apps/build.
 ???+ note
     `PUSHOVER_EXPIRE` and `PUSHOVER_RETRY` are only used when `PUSHOVER_PRIORITY="2"`
 
+## Redis
+
+| Environment variable | Description |
+|:---:|---|
+| `REDIS_URL` | Connection string in format (redis://[username]:[password]@[host][:port]/[database-id]) (redis://localhost:6379/1) |
+
 ## Slack
 
 | Environment variable | Description |
@@ -190,4 +196,4 @@ Generate all Twitter keys at: https://developer.twitter.com/
 | `TWITCH_CLIENT_SECRET`| Twitch client secret |
 | `TWITCH_ACCESS_TOKEN` | Twitch access token |
 | `TWITCH_REFRESH_TOKEN` | Twitch refresh token |
-| `TWITCH_CHANNEL` | Twitch channel |
+| `TWITCH_CHANNEL` | Twitch channel |

package.json

@@ -29,6 +29,7 @@
     "@jef/pushbullet": "^2.4.3",
     "@slack/web-api": "^5.14.0",
     "@types/random-useragent": "^0.3.0",
+    "@types/redis": "^2.8.28",
     "chalk": "^4.1.0",
     "cheerio": "^1.0.0-rc.3",
     "discord.js": "^12.5.1",
@@ -48,6 +49,7 @@
     "puppeteer-extra-plugin-block-resources": "^2.2.7",
     "puppeteer-extra-plugin-stealth": "^2.6.5",
     "pushover-notifications": "^1.2.2",
+    "redis": "^3.0.2",
     "top-user-agents": "^1.0.19",
     "twilio": "^3.54.1",
     "twitch": "^4.3.6",

src/config.ts

@@ -279,6 +279,9 @@ const notifications = {
 		token: envOrString(process.env.PUSHOVER_TOKEN),
 		username: envOrString(process.env.PUSHOVER_USER)
 	},
+	redis: {
+		url: envOrString(process.env.REDIS_URL)
+	},
 	slack: {
 		channel: envOrString(process.env.SLACK_CHANNEL),
 		token: envOrString(process.env.SLACK_TOKEN)

src/notification/notification.ts

@@ -14,6 +14,7 @@ import {sendTelegramMessage} from './telegram';
 import {sendTweet} from './twitter';
 import {sendTwilioMessage} from './twilio';
 import {sendTwitchMessage} from './twitch';
+import updateRedis from './redis';
 
 export function sendNotification(link: Link, store: Store) {
 	// Priority
@@ -33,4 +34,5 @@ export function sendNotification(link: Link, store: Store) {
 	sendTweet(link, store);
 	sendTwilioMessage(link, store);
 	sendTwitchMessage(link, store);
+	updateRedis(link, store);
 }

src/notification/redis.ts

@@ -0,0 +1,40 @@
+import {Link, Store} from '../store/model';
+import {config} from '../config';
+import {logger} from '../logger';
+import redis from 'redis';
+
+const {url} = config.notifications.redis;
+
+const client = redis.createClient({
+	url
+});
+
+const updateRedis = (link: Link, store: Store) => {
+	try {
+		if (url) {
+			const key = `${store.name}:${link.brand}:${link.model}`
+				.split(' ')
+				.join('-');
+
+			const value = {
+				...link,
+				labels: store.labels,
+				links: store.links,
+				name: store.name,
+				updatedAt: new Date().toUTCString()
+			};
+
+			const redisUpdated = client.set(key, JSON.stringify(value));
+
+			if (redisUpdated) {
+				logger.info('✔ redis updated');
+			} else {
+				logger.error(`✖ couldn't update redis for key (${key})`);
+			}
+		}
+	} catch (error: unknown) {
+		logger.error("✖ couldn't update redis", error);
+	}
+};
+
+export default updateRedis;