// Package mapstruct provides bidirectional conversion between Go structs and maps.
// It supports:
// - Struct <-> map[string]any
// - Struct <-> map[string]string
// - Custom type conversion via hooks
// - Nested structs and pointers
// - Field name mapping via struct tags
package mapstruct

import (
	"reflect"
)

// HookFunc defines a function type for custom field conversion.
type HookFunc func(reflect.Value, reflect.StructField) (any, error)

// StringHookFunc defines a function type for custom string-to-value conversion.
type StringHookFunc func(string, reflect.StructField) (any, error)

// Direction indicates the conversion direction.
//type Direction int
//
//const (
//	StructToMap Direction = iota
//	MapToStruct
//)

// commonOptions contains options shared by both conversions.
type commonOptions struct {
	TagName    string
	FieldHooks map[string]HookFunc
}

// newCommonOptions creates a new commonOptions with defaults.
func newCommonOptions() *commonOptions {
	return &commonOptions{
		TagName: "json",
	}
}