Notifications: Add support for Microsoft Teams (#812)

pkg/notifications/teams.go

@@ -0,0 +1,52 @@
+package notifications
+
+import (
+	"bytes"
+	"encoding/json"
+	"fmt"
+	"net/http"
+	"strings"
+)
+
+func init() {
+	initers = append(initers, func(cfg map[string]string) Notifier {
+		url, ok := cfg["slack_url"]
+		if !ok {
+			return nil
+		}
+
+		notifier := &slackNotifier{
+			URL: url,
+		}
+		return notifier
+	})
+}
+
+// teamsNotifier sends notifications to teams or mattermost
+type teamsNotifier struct {
+	URL string
+}
+
+func (s *teamsNotifier) Notify(domain, provider, msg string, err error, preview bool) {
+	var payload struct {
+		Username string `json:"username"`
+		Text     string `json:"text"`
+	}
+	payload.Username = "DnsControl"
+
+	// Format changes as 'preformated' text
+	msg = strings.ReplaceAll(msg, "\n", "\n    ")
+
+	if preview {
+		payload.Text = fmt.Sprintf("**DnsControl Preview %s**\n%s", domain, msg)
+	} else if err != nil {
+		payload.Text = fmt.Sprintf("**DnsControl Error Making Changes %s**\n%s\nError: %s", domain, msg, err)
+	} else {
+		payload.Text = fmt.Sprintf("**DnsControl Successfully Changed %s**\n%s", domain, msg)
+	}
+
+	json, _ := json.Marshal(payload)
+	http.Post(s.URL, "text/json", bytes.NewReader(json))
+}
+
+func (s *teamsNotifier) Done() {}