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

import Amplify
import Foundation

extension Book {

    // MARK: - CodingKeys
    public enum CodingKeys: String, ModelKey {
        case id
        case title
        case authors
    }

    public static let keys = CodingKeys.self

    // MARK: - ModelSchema

    public static let schema = defineSchema { model in
        let book = Book.keys

        model.fields(
            .id(),
            .field(book.title, is: .required, ofType: .string),
            .hasMany(book.authors,
                     ofType: BookAuthor.self,
                     associatedWith: BookAuthor.keys.author)
        )
    }

    public class Path : ModelPath<Book> {}

    public static var rootPath: PropertyContainerPath? { Path() }

}

extension ModelPath where ModelType == Book {
    var id: FieldPath<String> { id() }
    var authors: ModelPath<BookAuthor> { BookAuthor.Path(name: "authors", isCollection: true, parent: self) }
}