package raw_sql_tpl

import (
	"errors"
	"reflect"
	"strconv"
	"time"
)

const (
	timeWriteFormat = time.DateTime + ".000000 +08:00"
)

func parseValue(value any) (string, error) {
	valueValue := reflect.ValueOf(value)

	if !valueValue.IsValid() {
		return "", errors.New("无效值")
	}

	if valueValue.Kind() == reflect.Ptr && valueValue.IsNil() {
		return "", errors.New("空值")
	}

	if valueValue.Kind() == reflect.Ptr {
		valueValue = valueValue.Elem()
	}

	switch v := valueValue.Interface().(type) {
	case string:
		return "'" + v + "'", nil
	case bool:
		return strconv.FormatBool(v), nil
	case time.Time:
		return "'" + v.Format(timeWriteFormat) + "'", nil
	case int:
		return strconv.Itoa(v), nil
	case int8:
		return strconv.FormatInt(int64(v), 10), nil
	case int16:
		return strconv.FormatInt(int64(v), 10), nil
	case int32:
		return strconv.FormatInt(int64(v), 10), nil
	case int64:
		return strconv.FormatInt(v, 10), nil
	case uint:
		return strconv.FormatUint(uint64(v), 10), nil
	case uint8:
		return strconv.FormatUint(uint64(v), 10), nil
	case uint16:
		return strconv.FormatUint(uint64(v), 10), nil
	case uint32:
		return strconv.FormatUint(uint64(v), 10), nil
	case uint64:
		return strconv.FormatUint(v, 10), nil
	default:
		return "", errors.New("不支持的类型")
	}
}