v0.1.0 (#17)

pkg/channels/message.go

@@ -0,0 +1,65 @@
+package channels
+
+import (
+	"fmt"
+	"strings"
+
+	"git.omukk.dev/wrenn/wrenn/pkg/events"
+)
+
+// FormatMessage produces a human-readable notification string containing
+// the event summary, resource details, actor, and timestamp.
+func FormatMessage(e events.Event) string {
+	var b strings.Builder
+
+	b.WriteString(formatSummary(e))
+	fmt.Fprintf(&b, "\n\nEvent: %s", e.Event)
+	fmt.Fprintf(&b, "\nResource: %s %s", e.Resource.Type, e.Resource.ID)
+	fmt.Fprintf(&b, "\nActor: %s", formatActor(e.Actor))
+	fmt.Fprintf(&b, "\nTeam: %s", e.TeamID)
+	fmt.Fprintf(&b, "\nTime: %s", e.Timestamp)
+
+	return b.String()
+}
+
+func formatSummary(e events.Event) string {
+	switch e.Event {
+	case events.CapsuleCreated:
+		return fmt.Sprintf("Capsule %s created", e.Resource.ID)
+	case events.CapsuleRunning:
+		return fmt.Sprintf("Capsule %s is running", e.Resource.ID)
+	case events.CapsulePaused:
+		return fmt.Sprintf("Capsule %s paused", e.Resource.ID)
+	case events.CapsuleDestroyed:
+		return fmt.Sprintf("Capsule %s destroyed", e.Resource.ID)
+	case events.SnapshotCreated:
+		return fmt.Sprintf("Template snapshot %s created", e.Resource.ID)
+	case events.SnapshotDeleted:
+		return fmt.Sprintf("Template snapshot %s deleted", e.Resource.ID)
+	case events.HostUp:
+		return fmt.Sprintf("Host %s is up", e.Resource.ID)
+	case events.HostDown:
+		return fmt.Sprintf("Host %s is down", e.Resource.ID)
+	default:
+		return fmt.Sprintf("%s %s", e.Resource.Type, e.Resource.ID)
+	}
+}
+
+func formatActor(a events.Actor) string {
+	switch a.Type {
+	case events.ActorSystem:
+		return "system"
+	case events.ActorUser:
+		if a.Name != "" {
+			return fmt.Sprintf("%s (%s)", a.Name, a.ID)
+		}
+		return a.ID
+	case events.ActorAPIKey:
+		if a.Name != "" {
+			return fmt.Sprintf("api_key %s (%s)", a.Name, a.ID)
+		}
+		return fmt.Sprintf("api_key %s", a.ID)
+	default:
+		return string(a.Type)
+	}
+}