refactored for maintainability

internal/notify/notify.go

@@ -0,0 +1,63 @@
+// Package notify provides utility functions for sending notifications to clients
+package notify
+
+import (
+	"net/http"
+
+	"git.haelnorr.com/h/golib/hws"
+	"git.haelnorr.com/h/golib/notify"
+	"git.haelnorr.com/h/oslstats/internal/throw"
+	"github.com/pkg/errors"
+)
+
+func notifyClient(
+	s *hws.Server,
+	w http.ResponseWriter,
+	r *http.Request,
+	level notify.Level,
+	title, message, details string,
+	action any,
+) {
+	subCookie, err := r.Cookie("ws_sub_id")
+	if err != nil {
+		throw.InternalServiceError(s, w, r, "Notification failed. Do you have cookies enabled?", errors.Wrap(err, "r.Cookie"))
+		return
+	}
+	subID := notify.Target(subCookie.Value)
+	nt := notify.Notification{
+		Target:  subID,
+		Title:   title,
+		Message: message,
+		Details: details,
+		Action:  action,
+		Level:   level,
+	}
+	s.NotifySub(nt)
+}
+
+// InternalServiceError notifies with error level
+func InternalServiceError(s *hws.Server, w http.ResponseWriter, r *http.Request, msg string, err error) {
+	notifyClient(s, w, r, notify.LevelError, "Internal Service Error", msg,
+		SerializeErrorDetails(http.StatusInternalServerError, err), nil)
+}
+
+// ServiceUnavailable notifies with error level
+func ServiceUnavailable(s *hws.Server, w http.ResponseWriter, r *http.Request, msg string, err error) {
+	notifyClient(s, w, r, notify.LevelError, "Service Unavailable", msg,
+		SerializeErrorDetails(http.StatusServiceUnavailable, err), nil)
+}
+
+// Warn notifies with warn level
+func Warn(s *hws.Server, w http.ResponseWriter, r *http.Request, title, msg string, action any) {
+	notifyClient(s, w, r, notify.LevelWarn, title, msg, "", action)
+}
+
+// Info notifies with info level
+func Info(s *hws.Server, w http.ResponseWriter, r *http.Request, title, msg string, action any) {
+	notifyClient(s, w, r, notify.LevelInfo, title, msg, "", action)
+}
+
+// Success notifies with success level
+func Success(s *hws.Server, w http.ResponseWriter, r *http.Request, title, msg string, action any) {
+	notifyClient(s, w, r, notify.LevelSuccess, title, msg, "", action)
+}