Add Discord notification (#35)

add discord notification

src/functions/cronTrigger.js

@@ -6,6 +6,7 @@ import {
   getCheckLocation,
   getKVMonitors,
   setKVMonitors,
+  notifyDiscord,
 } from './helpers'
 
 function getDate() {
@@ -88,6 +89,15 @@ export async function processCronTrigger(event) {
       event.waitUntil(notifyTelegram(monitor, monitorOperational))
     }
 
+    // Send Discord message on monitor change
+    if (
+      monitorStatusChanged &&
+      typeof SECRET_DISCORD_WEBHOOK_URL !== 'undefined' &&
+      SECRET_DISCORD_WEBHOOK_URL !== 'default-gh-action-secret'
+    ) {
+      event.waitUntil(notifyDiscord(monitor, monitorOperational))
+    }
+
     // make sure checkDay exists in checks in cases when needed
     if (
       (config.settings.collectResponseTimes || !monitorOperational) &&

src/functions/helpers.js

@@ -90,6 +90,30 @@ export async function notifyTelegram(monitor, operational) {
   })
 }
 
+// Visualize your payload using https://leovoel.github.io/embed-visualizer/
+export async function notifyDiscord(monitor, operational) {
+  const payload = {
+    username: `${config.settings.title}`,
+    avatar_url: `${config.settings.url}/${config.settings.logo}`,
+    embeds: [
+      {
+        title: `${monitor.name} is ${getOperationalLabel(operational)} ${
+          operational ? ':white_check_mark:' : ':x:'
+        }`,
+        description: `\`${monitor.method ? monitor.method : 'GET'} ${
+          monitor.url
+        }\` - :eyes: [Status Page](${config.settings.url})`,
+        color: operational ? 3581519 : 13632027,
+      },
+    ],
+  }
+  return fetch(SECRET_DISCORD_WEBHOOK_URL, {
+    body: JSON.stringify(payload),
+    method: 'POST',
+    headers: { 'Content-Type': 'application/json' },
+  })
+}
+
 export function useKeyPress(targetKey) {
   const [keyPressed, setKeyPressed] = useState(false)