// Copyright 2023 The Xorm Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.

package convert

import (
	"fmt"
	"reflect"
	"strconv"
)

func AsKind(vv reflect.Value, tp reflect.Type) (interface{}, error) {
	switch tp.Kind() {
	case reflect.Ptr:
		return AsKind(vv.Elem(), tp.Elem())
	case reflect.Int64:
		return vv.Int(), nil
	case reflect.Int:
		return int(vv.Int()), nil
	case reflect.Int32:
		return int32(vv.Int()), nil
	case reflect.Int16:
		return int16(vv.Int()), nil
	case reflect.Int8:
		return int8(vv.Int()), nil
	case reflect.Uint64:
		return vv.Uint(), nil
	case reflect.Uint:
		return uint(vv.Uint()), nil
	case reflect.Uint32:
		return uint32(vv.Uint()), nil
	case reflect.Uint16:
		return uint16(vv.Uint()), nil
	case reflect.Uint8:
		return uint8(vv.Uint()), nil
	case reflect.String:
		return vv.String(), nil
	case reflect.Slice:
		if tp.Elem().Kind() == reflect.Uint8 {
			v, err := strconv.ParseInt(string(vv.Interface().([]byte)), 10, 64)
			if err != nil {
				return nil, err
			}
			return v, nil
		}
	}
	return nil, fmt.Errorf("unsupported primary key type: %v, %v", tp, vv)
}