// This is Free Software under GNU Affero General Public License v >= 3.0
// without warranty, see README.md and license for details.
//
// SPDX-License-Identifier: AGPL-3.0-or-later
// License-Filename: LICENSES/AGPL-3.0.txt
//
// Copyright (C) 2019, 2020 by via donau
//   – Österreichische Wasserstraßen-Gesellschaft mbH
// Software engineering by Intevation GmbH
//
// Author(s):
//  * Sascha L. Teichmann <sascha.teichmann@intevation.de>

package controllers

import (
	"fmt"
	"net/http"
	"strconv"
	"time"

	"gemma.intevation.de/gemma/pkg/common"
)

func parseFormTime(
	rw http.ResponseWriter,
	req *http.Request,
	field string,
	def time.Time,
) (time.Time, bool) {
	f := req.FormValue(field)
	if f == "" {
		return def.UTC(), true
	}
	v, err := common.ParseTime(f)
	if err != nil {
		http.Error(
			rw, fmt.Sprintf("Invalid format for '%s'.", field),
			http.StatusBadRequest,
		)
		return time.Time{}, false
	}
	return v.UTC(), true
}

func parseFormInt(
	rw http.ResponseWriter,
	req *http.Request,
	field string,
	def int,
) (int, bool) {
	f := req.FormValue(field)
	if f == "" {
		return def, true
	}
	v, err := strconv.Atoi(f)
	if err != nil {
		http.Error(
			rw, fmt.Sprintf("Invalid format for '%s'.", field),
			http.StatusBadRequest,
		)
		return 0, false
	}
	return v, true
}