Added Slack Webhook support

server/notification.js

@@ -124,6 +124,93 @@ class Notification {
             console.log(error)
             return false;
         }
+            
+        } else if (notification.type === "slack") {
+            try {
+                if (heartbeatJSON == null) {
+                    let data = {
+                        "blocks": [{
+                                "type": "header",
+                                "text": {
+                                    "type": "plain_text",
+                                    "text": "Uptime Kuma - Slack Testing"
+                                }
+                            },
+                            {
+                                "type": "section",
+                                "fields": [{
+                                        "type": "mrkdwn",
+                                        "text": "*Message*\nSlack Testing"
+                                    },
+                                    {
+                                        "type": "mrkdwn",
+                                        "text": "*Time (UTC)*\nSlack Testing"
+                                    }
+                                ]
+                            },
+                            {
+                                "type": "actions",
+                                "elements": [
+                                    {
+                                        "type": "button",
+                                        "text": {
+                                            "type": "plain_text",
+                                            "text": "Visit Uptime Kuma",
+                                        },
+                                        "value": "Uptime-Kuma",
+                                        "url": notification.slackbutton
+                                    }
+                                ]
+                            }
+                        ]
+                    }
+                    let res = await axios.post(notification.slackwebhookURL, data)
+                    return true;
+                }
+
+                const time = heartbeatJSON["time"];
+                let data = {
+                    "blocks": [{
+                            "type": "header",
+                            "text": {
+                                "type": "plain_text",
+                                "text": "Uptime Kuma Alert"
+                            }
+                        },
+                        {
+                            "type": "section",
+                            "fields": [{
+                                    "type": "mrkdwn",
+                                    "text": '*Message*\n'+msg
+                                },
+                                {
+                                    "type": "mrkdwn",
+                                    "text": "*Time (UTC)*\n"+time
+                                }
+                            ]
+                        },
+                        {
+                                "type": "actions",
+                                "elements": [
+                                    {
+                                        "type": "button",
+                                        "text": {
+                                            "type": "plain_text",
+                                            "text": "Visit Uptime Kuma",
+                                        },
+                                        "value": "Uptime-Kuma",
+                                        "url": notification.slackbutton
+                                    }
+                                ]
+                            }
+                        ]
+                    }
+                let res = await axios.post(notification.slackwebhookURL, data)
+                return true;
+            } catch (error) {
+                console.log(error)
+                return false;
+            }
 
         } else {
             throw new Error("Notification type is not supported")