//
// Copyright Amazon.com Inc. or its affiliates.
// All Rights Reserved.
//
// SPDX-License-Identifier: Apache-2.0
//

import Amplify
import Foundation
import SQLite

/// A sub-protocol of `DataStoreStatement` that represents a SQL statement.
///
/// SQL statements include: `create table`, `insert`, `update`, `delete` and `select`.
protocol SQLStatement: DataStoreStatement where Variables == [Binding?] {}

/// An useful extension to add a default empty array to `SQLStatement.variables` to
/// concrete types conforming to `SQLStatement`.
extension SQLStatement {

    var variables: [Binding?] {
        return []
    }
}

extension SQLStatement {

    // `modelType` is deprecated, instead modelSchema should be used.
    var modelType: Model.Type {
        fatalError("""
        DataStoreStatement.modelType is deprecated. SQLStatement is an internal type and there should be \
        no references to modelType. If you encounter this error, please open a GitHub issue. \
        https://github.com/aws-amplify/amplify-ios/issues/new/choose
        """)
    }
}