/***********************************************************************************************************************
 *
 *   MIT License
 *
 *   Copyright (c) 2022 Nicolas JUHEL
 *
 *   Permission is hereby granted, free of charge, to any person obtaining a copy
 *   of this software and associated documentation files (the "Software"), to deal
 *   in the Software without restriction, including without limitation the rights
 *   to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 *   copies of the Software, and to permit persons to whom the Software is
 *   furnished to do so, subject to the following conditions:
 *
 *   The above copyright notice and this permission notice shall be included in all
 *   copies or substantial portions of the Software.
 *
 *   THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 *   IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 *   FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 *   AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 *   LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 *   OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
 *   SOFTWARE.
 *
 *
 **********************************************************************************************************************/

package perm

import (
	"reflect"

	libmap "github.com/go-viper/mapstructure/v2"
)

func ViperDecoderHook() libmap.DecodeHookFuncType {
	return func(from reflect.Type, to reflect.Type, data interface{}) (interface{}, error) {
		var (
			z = Perm(0)
			t string
			k bool
		)

		// Check if the data type matches the expected one
		if from.Kind() != reflect.String {
			return data, nil
		} else if t, k = data.(string); !k {
			return data, nil
		}

		// Check if the target type matches the expected one
		if to != reflect.TypeOf(z) {
			return data, nil
		}

		// Format/decode/parse the data and return the new value
		return parseString(t)
	}
}