feat: add error handler for toasts

components/toasts/errors.go

@@ -0,0 +1,33 @@
+package toasts
+
+import (
+	"errors"
+
+	"github.com/gofiber/fiber/v2"
+	htmx "github.com/zeiss/fiber-htmx"
+)
+
+// DefaultErrorHandler is the default error handler for toasts.
+var DefaultErrorHandler = func(c *fiber.Ctx, err error) error {
+	code := fiber.StatusInternalServerError
+
+	var te Toast
+	if !errors.As(err, &te) {
+		te = Error("there has been an unexpected error")
+	}
+
+	if te.Level != SUCCESS {
+		htmx.ReSwap(c, "none")
+	}
+
+	te.SetHXTriggerHeader(c)
+
+	var e *fiber.Error
+	if errors.As(err, &e) {
+		code = e.Code
+	}
+
+	c.Set(fiber.HeaderContentType, fiber.MIMETextPlainCharsetUTF8)
+
+	return c.Status(code).SendString(err.Error())
+}