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

namespace ButcherShopTests.DataModelTests;

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

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

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

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

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

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

    [Test]
    public void AllFieldsIsCorrectTest()
    {
        var saleId = Guid.NewGuid().ToString();
        var workerId = Guid.NewGuid().ToString();
        var sum = 10;
        var isCancel = true;
        var products = CreateSubDataModel();
        var sale = CreateDataModel(saleId, workerId, sum, isCancel, products);
        Assert.That(() => sale.Validate(), Throws.Nothing);
        Assert.Multiple(() =>
        {
            Assert.That(sale.Id, Is.EqualTo(saleId));
            Assert.That(sale.WorkerId, Is.EqualTo(workerId));
            Assert.That(sale.Sum, Is.EqualTo(sum));
            Assert.That(sale.IsCancel, Is.EqualTo(isCancel));
            Assert.That(sale.Products, Is.EquivalentTo(products));
        });
    }
    private static SaleDataModel CreateDataModel(string? id, string? workerId,double sum, bool isCancel, List<SaleProductDataModel>? products) 
        =>new(id, workerId, sum, isCancel, products);
    private static List<SaleProductDataModel> CreateSubDataModel()
        => [new(Guid.NewGuid().ToString(), Guid.NewGuid().ToString(), 1)];
}