package handler

import (
	"mstore/app/router"
	"mstore/pkg/auxhttp"
)

const (
	authTag = "authpass"
	userTag = "username"
)

func (hand *Handler) AuthMiddleware(next router.Handler) router.Handler {
	var handlerFunc router.HandlerFunc

	handlerFunc = func(rctx *router.Context) {
		hand.logg.Debugf("Call authorization middleware")
		success, username, err := hand.CheckAccess(rctx)
		if success && err == nil {
			rctx.SetBool(authTag, true)
			rctx.SetString(userTag, username)
		}
		if err != nil {
			hand.logg.Errorf("Authorization middleware error: %v", err)
		}
		next.ServeHTTP(rctx)

	}
	return handlerFunc
}

func (hand *Handler) CheckAccess(rctx *router.Context) (bool, string, error) {
	var err error
	var success bool
	var username string
	var password string

	authHeader := rctx.GetHeader("Authorization")
	if authHeader != "" {
		hand.logg.Debugf("Authorization header is %s", authHeader)
		username, password, err = auxhttp.ParseBasicAuth(authHeader)
		if err != nil {
			return success, username, err
		}
		hand.logg.Debugf("Authorization username is %s:%s", username, password)
	}

	success = true

	return success, username, err
}