using MagicCarpetContracts.DataModels;
using MagicCarpetContracts.Enums;
using MagicCarpetContracts.Exceptions;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace MagicCarpetTests.DataModelTests;

[TestFixture]
internal class SaleDataModelTests
{
    [Test]
    public void IdIsNullOrEmptyTest()
    {
        var sale = CreateDataModel(null, Guid.NewGuid().ToString(), Guid.NewGuid().ToString(), 10, DiscountType.OnSale, 10, false, CreateSubDataModel());
        Assert.That(() => sale.Validate(), Throws.TypeOf<ValidationException>());
        sale = CreateDataModel(string.Empty, Guid.NewGuid().ToString(), Guid.NewGuid().ToString(), 10, DiscountType.OnSale, 10, false, CreateSubDataModel());
        Assert.That(() => sale.Validate(), Throws.TypeOf<ValidationException>());
    }

    [Test]
    public void IdIsNotGuidTest()
    {
        var sale = CreateDataModel("id", Guid.NewGuid().ToString(), Guid.NewGuid().ToString(), 10, DiscountType.OnSale, 10, false, CreateSubDataModel());
        Assert.That(() => sale.Validate(), Throws.TypeOf<ValidationException>());
    }
    [Test]
    public void EmployeeIdIsNullOrEmptyTest()
    {
        var sale = CreateDataModel(Guid.NewGuid().ToString(), null, Guid.NewGuid().ToString(), 10, DiscountType.OnSale, 10, false, CreateSubDataModel());
        Assert.That(() => sale.Validate(), Throws.TypeOf<ValidationException>());
        sale = CreateDataModel(Guid.NewGuid().ToString(), string.Empty, Guid.NewGuid().ToString(), 10, DiscountType.OnSale, 10, false, CreateSubDataModel());
        Assert.That(() => sale.Validate(), Throws.TypeOf<ValidationException>());
    }

    [Test]
    public void EmployeeIdIsNotGuidTest()
    {
        var sale = CreateDataModel(Guid.NewGuid().ToString(), "employeeId", Guid.NewGuid().ToString(), 10, DiscountType.OnSale, 10, false, CreateSubDataModel());
        Assert.That(() => sale.Validate(), Throws.TypeOf<ValidationException>());
    }

    [Test]
    public void ClientIdIsNotGuidTest()
    {
        var sale = CreateDataModel(Guid.NewGuid().ToString(), Guid.NewGuid().ToString(), "clientId", 10, DiscountType.OnSale, 10, false, CreateSubDataModel());
        Assert.That(() => sale.Validate(), Throws.TypeOf<ValidationException>());
    }

    [Test]
    public void SumIsLessOrZeroTest()
    {
        var sale = CreateDataModel(Guid.NewGuid().ToString(), Guid.NewGuid().ToString(), Guid.NewGuid().ToString(), 0, DiscountType.OnSale, 10, false, CreateSubDataModel());
        Assert.That(() => sale.Validate(), Throws.TypeOf<ValidationException>());
        sale = CreateDataModel(Guid.NewGuid().ToString(), Guid.NewGuid().ToString(), Guid.NewGuid().ToString(), -10, DiscountType.OnSale, 10, false, CreateSubDataModel());
        Assert.That(() => sale.Validate(), Throws.TypeOf<ValidationException>());
    }

    [Test]
    public void ToursIsNullOrEmptyTest()
    {
        var sale = CreateDataModel(Guid.NewGuid().ToString(), Guid.NewGuid().ToString(), Guid.NewGuid().ToString(), 10, DiscountType.OnSale, 10, false, null);
        Assert.That(() => sale.Validate(), Throws.TypeOf<ValidationException>());
        sale = CreateDataModel(Guid.NewGuid().ToString(), Guid.NewGuid().ToString(), Guid.NewGuid().ToString(), 10, DiscountType.OnSale, 10, false, []);
        Assert.That(() => sale.Validate(), Throws.TypeOf<ValidationException>());
    }

    [Test]
    public void AllFieldsIsCorrectTest()
    {
        var saleId = Guid.NewGuid().ToString();
        var employeeId = Guid.NewGuid().ToString();
        var clientId = Guid.NewGuid().ToString();
        var sum = 10;
        var discountType = DiscountType.Certificate;
        var discount = 1;
        var isCancel = true;
        var tours = CreateSubDataModel();
        var sale = CreateDataModel(saleId, employeeId, clientId, sum, discountType, discount, isCancel, tours);
        Assert.That(() => sale.Validate(), Throws.Nothing);
        Assert.Multiple(() =>
        {
            Assert.That(sale.Id, Is.EqualTo(saleId));
            Assert.That(sale.EmployeeId, Is.EqualTo(employeeId));
            Assert.That(sale.ClientId, Is.EqualTo(clientId));
            Assert.That(sale.Sum, Is.EqualTo(sum));
            Assert.That(sale.DiscountType, Is.EqualTo(discountType));
            Assert.That(sale.Discount, Is.EqualTo(discount));
            Assert.That(sale.IsCancel, Is.EqualTo(isCancel));
            Assert.That(sale.Tours, Is.EquivalentTo(tours));
        });
    }

    private static SaleDataModel CreateDataModel(string? id, string? employeeId, string? clientId, double sum, DiscountType discountType, 
        double discount, bool isCancel, List<SaleTourDataModel>? tours) =>
        new(id, employeeId, clientId, sum, discountType, discount, isCancel, tours);

    private static List<SaleTourDataModel> CreateSubDataModel()
        => [new(Guid.NewGuid().ToString(), Guid.NewGuid().ToString(), 1)];
}