015/backend/internal/utils/http_result.go

package utils

import (
	"errors"
	"net/http"

	"github.com/labstack/echo/v4"
)

func HTTPErrorHandler(c echo.Context, err error, options ...HTTPBaseResponseProps) error {
	return HTTPBaseHandler(c, WithMessage(err.Error()), WithCode(http.StatusBadRequest))
}

type HTTPBaseResponse struct {
	code    int
	message string
	data    map[string]any
}

type HTTPBaseResponseProps func(props *HTTPBaseResponse) error

func WithCode(code int) HTTPBaseResponseProps {
	return func(props *HTTPBaseResponse) error {
		if code < 100 || code > 599 {
			return errors.New("code should be positive")
		}
		props.code = code
		return nil
	}
}

func WithMessage(message string) HTTPBaseResponseProps {
	return func(props *HTTPBaseResponse) error {
		if message == "" {
			return errors.New("message should not be empty")
		}
		props.message = message
		return nil
	}
}

func WithData(data map[string]any) HTTPBaseResponseProps {
	return func(props *HTTPBaseResponse) error {
		props.data = data
		return nil
	}
}

func HTTPBaseHandler(c echo.Context, options ...HTTPBaseResponseProps) error {
	props := HTTPBaseResponse{code: http.StatusOK, message: "success", data: map[string]any{}}
	for _, option := range options {
		err := option(&props)
		if err != nil {
			return err
		}
	}

	return c.JSON(props.code, map[string]any{
		"code":    props.code,
		"message": props.message,
		"data":    props.data,
	})
}

func HTTPSuccessHandler(c echo.Context, data map[string]any, options ...HTTPBaseResponseProps) error {
	return HTTPBaseHandler(c, WithData(data))
}