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

namespace TwoFromTheCasketTest.DataModelsTest;

[TestFixture]
public class ServiceHistoryDataModelTests
{
    [Test]
    public void ServiceIdIsNullOrEmptyTest()
    {
        var serviceHistory = CreateDataModel(string.Empty, 100.0);
        Assert.That(() => serviceHistory.Validate(), Throws.TypeOf<ValidationException>());
    }

    [Test]
    public void ServiceIdIsNotGuidTest()
    {
        var serviceHistory = CreateDataModel("invalid-guid", 100.0);
        Assert.That(() => serviceHistory.Validate(), Throws.TypeOf<ValidationException>());
    }

    [Test]
    public void OldPriceIsLessOrEqualToZeroTest()
    {
        var serviceHistory = CreateDataModel(Guid.NewGuid().ToString(), 0);
        Assert.That(() => serviceHistory.Validate(), Throws.TypeOf<ValidationException>());

        serviceHistory = CreateDataModel(Guid.NewGuid().ToString(), -50.0);
        Assert.That(() => serviceHistory.Validate(), Throws.TypeOf<ValidationException>());
    }

    [Test]
    public void AllFieldsAreCorrectTest()
    {
        var serviceId = Guid.NewGuid().ToString();
        var oldPrice = 100.0;

        var serviceHistory = CreateDataModel(serviceId, oldPrice);

        Assert.That(() => serviceHistory.Validate(), Throws.Nothing);

        Assert.Multiple(() =>
        {
            Assert.That(serviceHistory.ServiceId, Is.EqualTo(serviceId));
            Assert.That(serviceHistory.OldPrice, Is.EqualTo(oldPrice));
            Assert.That(serviceHistory.ChangeDate, Is.EqualTo(DateTime.UtcNow).Within(TimeSpan.FromSeconds(1))); 
        });
    }

    private static ServiceHistoryDataModel CreateDataModel(string serviceId, double oldPrice)
    {
        return new ServiceHistoryDataModel(serviceId, oldPrice);
    }
}