common/pkg/web/response.go

package web

import (
	"github.com/gofiber/fiber/v3"
	"github.com/pkg/errors"
)

type ListResponse[E any] struct {
	Total int64 `json:"total"`
	List  []E   `json:"list"`
}

type Response struct {
	Code int         `json:"code"`
	Msg  string      `json:"msg,omitempty"`
	Data interface{} `json:"data,omitempty"`
}

func ErrHandle(ctx fiber.Ctx, err error) error {
	// Status code defaults to 500
	code := fiber.StatusInternalServerError

	// Retrieve the custom status code if it's a *fiber.Error
	var e *fiber.Error
	if errors.As(err, &e) {
		code = e.Code
	}

	// Send custom error page
	err = ctx.Status(code).JSON(Response{
		Code: code,
		Msg:  err.Error(),
	})
	if err != nil {
		// In case the SendFile fails
		return ctx.Status(fiber.StatusInternalServerError).SendString("Internal Server Error")
	}

	// Return from handler
	return nil
}