package middlewares

import (
	"fmt"
	"net/http"
	"pink_fox/packages/fw"
	"runtime/debug"
)

type ErrorMiddlewareServices interface {
	Debug() bool
	Logger() fw.Logger
	ResponseFactory() *fw.ResponseFactory
}

func ErrorMiddleware(services ErrorMiddlewareServices, next fw.ActionFunc) (response fw.Response, err fw.Error) {
	defer func() {
		if err_ := recover(); err_ != nil {
			err = fw.ErrPanic(fmt.Errorf("panic: %v", err_), debug.Stack())
			err = errorsHandler(services.ResponseFactory(), err, services.Debug(), services.Logger())
			response = nil
		}
	}()

	response, err = next()
	if err != nil {
		err = errorsHandler(services.ResponseFactory(), err, services.Debug(), services.Logger())
		return nil, err // ошибку отобразили
	}

	return nil, nil
}

func errorsHandler(responseFactory *fw.ResponseFactory, errIn fw.Error, debugOn bool, logger fw.Logger) fw.Error {
	if logger != nil {
		logger.Error(errIn.Message(), errIn.Trace())
	}

	textError := ""
	if debugOn {
		textError = errIn.Error()
	}

	response := responseFactory.View("errors/500.html", map[string]any{
		"title":   fmt.Sprintf("%d %s", http.StatusInternalServerError, http.StatusText(http.StatusInternalServerError)),
		"message": "We have a problem",
		"error":   textError,
	})
	response.WriteHeader(http.StatusInternalServerError)
	err := response.Render()
	if err != nil {
		return err.Add("ошибка при создании страницы ошибки")
	}

	return nil
}