// 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) 2018 by via donau
//   – Österreichische Wasserstraßen-Gesellschaft mbH
// Software engineering by Intevation GmbH
//
// Author(s):
//  * Sascha L. Teichmann <sascha.teichmann@intevation.de>

package common

import (
	"log"
	"strconv"
	"strings"
	"time"
)

// Attributes is a map of optional key/value attributes
// of a configuration.
type Attributes map[string]string

// Get fetches a value for given key out of the configuration.
// If the key was not found the bool component of the return value
// return false.
func (ca Attributes) Get(key string) (string, bool) {
	if ca == nil {
		return "", false
	}
	value, found := ca[key]
	return value, found
}

// Bool returns a bool value for a given key.
func (ca Attributes) Bool(key string) bool {
	s, found := ca.Get(key)
	return found && strings.ToLower(s) == "true"
}

// Time gives a time.Time for a given key.
func (ca Attributes) Time(key string) (time.Time, bool) {
	s, found := ca.Get(key)
	if !found {
		return time.Time{}, false
	}
	t, err := time.Parse("2006-01-02T15:04:05", s)
	if err != nil {
		log.Printf("error: %v\n", err)
		return time.Time{}, false
	}
	return t, true
}

func (ca Attributes) Int(key string) (int, bool) {
	s, found := ca.Get(key)
	if !found {
		return 0, false
	}
	i, err := strconv.Atoi(s)
	if err != nil {
		log.Printf("error: %v\n", err)
		return 0, false
	}
	return i, true
}