using System;
using Model;

namespace TestDataManager;

public class DataManagerTest_WithMemberData3
{
    [Theory]
    [MemberData(nameof(GetTestData_BorrowBook), parameters: true)]
    public async void TestBorrowBook_Success(bool expectedResult, Book bookToBorrow, Person borrower, IDataManager dataManager)
    {
        bool result = await dataManager.BorrowBook(bookToBorrow, borrower);
        Book? book = (await dataManager.GetBooksByIsbn(bookToBorrow?.Isbn, 0, 100)).SingleOrDefault();
        Person? person = (await dataManager.GetPersonsByName(borrower?.LastName, 0, 100)).SingleOrDefault();
    
        Assert.Equal(expectedResult, result);

        Assert.NotNull(book);
        Assert.NotNull(person);
        Assert.Contains(book, person.Books);
        Assert.Equal(person, book.Borrower);
    }

    [Theory]
    [MemberData(nameof(GetTestData_BorrowBook), parameters: false)]
    public async void TestBorrowBook_Fail(bool expectedResult, Book bookToBorrow, Person borrower, IDataManager dataManager)
    {
        bool result = await dataManager.BorrowBook(bookToBorrow, borrower);
        Book? book = (await dataManager.GetBooksByIsbn(bookToBorrow?.Isbn, 0, 100)).SingleOrDefault();
        Person? person = (await dataManager.GetPersonsByName(borrower?.LastName, 0, 100)).SingleOrDefault();
    
        Assert.Equal(expectedResult, result);

        if(person != null && book != null)
        {
            Assert.DoesNotContain(book, person.Books);
            Assert.NotEqual(person, book.Borrower);
        }
    }

    public static IEnumerable<object[]> GetTestData_BorrowBook(bool expectedResult)
    {
        var testData = new List<object[]>
        {
            //T1. no book and no borrower
        new object[] { false, null, null, new BorrowBookStub() },
        
        //T2. no book
        new object[] { false, null, new Person("John", "Coltrane"), new BorrowBookStub() },
        
        //T3. no borrower
        new object[] { false, new Book( "Les Pardaillan", "Michel Zévaco", "978-2221098417"), null, new BorrowBookStub() },
        
        //T4. new book and new borrower
        new object[] { false, new Book( "Les Pardaillan", "Michel Zévaco", "978-2221098417"), new Person("John", "Coltrane"), new BorrowBookStub() },

        //T5. new book and already known borrower
        new object[] { false, new Book( "Les Pardaillan", "Michel Zévaco", "978-2221098417"), new Person(1, "Chick", "Corea"), new BorrowBookStub() },

        //T6. already known but free book and new borrower
        new object[] { false, new Book(2, "Les Misérables", "Victor Hugo", "979-8850172916"), new Person("John", "Coltrane"), new BorrowBookStub() },

        //T7. already known but already borrowed book and new borrower
        new object[] { false, new Book(1, "Les Trois Mousquetaires", "Alexandre Dumas", "979-8415441792"), new Person("John", "Coltrane"), new BorrowBookStub() },

        //T8. already known but free book and already known borrower
        new object[] { true, new Book(2, "Les Misérables", "Victor Hugo", "979-8850172916"), new Person(1, "Chick", "Corea"), new BorrowBookStub() },
        
        //T9. already known but already borrowed book by another borrower and already known borrower
        new object[] { false, new Book(1, "Les Trois Mousquetaires", "Alexandre Dumas", "979-8415441792"), new Person(2, "Stanley", "Clarke"), new BorrowBookStub() },

        //T10. already known but already borrowed book by this borrower and already known borrower
        new object[] { true, new Book(1, "Les Trois Mousquetaires", "Alexandre Dumas", "979-8415441792"), new Person(1, "Chick", "Corea"), new BorrowBookStub() },
        };

        return testData.Where(data => (bool)data[0] == expectedResult);
    }
}