package migrator

import (
	"database/sql"
	"reflect"
)

// ColumnType column type implements ColumnType interface
type ColumnType struct {
	SQLColumnType      *sql.ColumnType
	NameValue          sql.NullString
	DataTypeValue      sql.NullString
	ColumnTypeValue    sql.NullString
	PrimaryKeyValue    sql.NullBool
	UniqueValue        sql.NullBool
	AutoIncrementValue sql.NullBool
	LengthValue        sql.NullInt64

	callbackTypeAfterFind    callbackType = "AfterFind"
)

// ErrUnsupportedDataType unsupported data type
var ErrUnsupportedDataType = errors.New("unsupported data type")

type Schema struct {
	Name                      string
	ModelType                 reflect.Type
	Table                     string
	PrioritizedPrimaryField   *Field
	DBNames                   []string
	PrimaryFields             []*Field

}

func TestAssociationEmptyQueryClause(t *testing.T) {
	type Organization struct {
		gorm.Model
		Name string
	}
	type Region struct {
		gorm.Model
		Name          string
		Organizations []Organization `gorm:"many2many:region_orgs;"`
	}
	type RegionOrg struct {
		RegionId       uint
		OrganizationId uint
		Empty          myType
	}

}

// Type returns the type of the table.
func (ct TableType) Type() string {
	return ct.TypeValue
}

// Comment returns the comment of current table.
func (ct TableType) Comment() (comment string, ok bool) {
	return ct.CommentValue.String, ct.CommentValue.Valid