namespace Model;

public interface IDataManager
{
    Task<IEnumerable<Book>> GetBooks(int index, int count);
    Task<IEnumerable<Book>> GetBooksByTitle(string? title, int index, int count);
    Task<IEnumerable<Book>> GetBooksByAuthor(string? author, int index, int count);
    Task<IEnumerable<Book>> GetBooksByIsbn(string? isbn, int index, int count);
    Task<Book?> GetBookById(long id);

    Task<IEnumerable<Person>> GetPersons(int index, int count);
    Task<IEnumerable<Person>> GetPersonsByName(string? name, int index, int count);
    Task<Person?> GetPersonById(long id);
    Task<IEnumerable<Book>> GetBooksBorrowedBy(Person? person, int index, int count);

    Task<Book> CreateBook(string title, string author, string isbn);
    Task<Book?> UpdateBook(long id, Book book);
    Task<bool> DeleteBook(long id);

    Task<Person> CreatePerson(string firstName, string lastName);
    Task<Person?> UpdatePerson(long id, Person person);
    Task<bool> DeletePerson(long id);

    Task<bool> BorrowBook(Book book, Person person);
    Task<bool> ReturnBook(Book book, Person person);
}