package data_mapping

import (
	"errors"
	"reflect"
)

type DataMapping struct {
	Name       string
	SqlMapping *SqlMapping
}

func ParseDataMapping(e any) (*DataMapping, error) {
	if e == nil {
		return nil, errors.New("没有传递实体")
	}

	entityType := reflect.TypeOf(e)
	if entityType.Kind() == reflect.Ptr {
		entityType = entityType.Elem()
	}

	if entityType.Kind() != reflect.Struct {
		return nil, errors.New("传递的不是实体结构")
	}

	sqlMapping, err := parseSqlMapping(entityType)
	if err != nil {
		return nil, err
	}

	return &DataMapping{
		Name:       entityType.String(),
		SqlMapping: sqlMapping,
	}, nil
}