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

namespace SmallSoftwareTests.DataModelsTests;


[TestFixture]
internal class SoftwareHistoryDataModelTests
{
    [Test]
    public void SoftwareIdIsNullOrEmptyTest()
    {
        var software = CreateDataModel(null, 10);
        Assert.That(() => software.Validate(),
        Throws.TypeOf<ValidationException>());
        software = CreateDataModel(string.Empty, 10);
        Assert.That(() => software.Validate(),
        Throws.TypeOf<ValidationException>());
    }
    [Test]
    public void SoftwareIdIsNotGuidTest()
    {
        var software = CreateDataModel("id", 10);
        Assert.That(() => software.Validate(),
        Throws.TypeOf<ValidationException>());
    }
    [Test]
    public void OldPriceIsLessOrZeroTest()
    {
        var software = CreateDataModel(Guid.NewGuid().ToString(), 0);
        Assert.That(() => software.Validate(),
        Throws.TypeOf<ValidationException>());
        software = CreateDataModel(Guid.NewGuid().ToString(), -10);
        Assert.That(() => software.Validate(),
        Throws.TypeOf<ValidationException>());
    }
    [Test]
    public void AllFieldsIsCorrectTest()
    {
        var softwareId = Guid.NewGuid().ToString();
        var oldPrice = 10;
        var softwareHistory = CreateDataModel(softwareId, oldPrice);
        Assert.That(() => softwareHistory.Validate(), Throws.Nothing);
        Assert.Multiple(() =>
        {
            Assert.That(softwareHistory.SoftwareId, Is.EqualTo(softwareId));
            Assert.That(softwareHistory.OldPrice, Is.EqualTo(oldPrice));
            Assert.That(softwareHistory.ChangeDate,
            Is.LessThan(DateTime.UtcNow));
            Assert.That(softwareHistory.ChangeDate,
            Is.GreaterThan(DateTime.UtcNow.AddMinutes(-1)));
        });
    }
    private static SoftwareHistoryDataModel CreateDataModel(string? softwareId,
    double oldPrice) =>
    new(softwareId, oldPrice);
}