using NorthBridgeContract.DataModels;
using NorthBridgeContract.Exceptions;

namespace NorthBridgeTest.DataModelsTests
{
    [TestFixture]
    internal class SupplyDataModelTests
    {
        [Test]
        public void IdIsNullOrEmptyTest()
        {
            var components = CreateComponents();
            var supply = CreateDataModel(null, Guid.NewGuid().ToString(), DateTime.Now, components);
            Assert.That(() => supply.Validate(), Throws.TypeOf<ValidationException>());

            supply = CreateDataModel(string.Empty, Guid.NewGuid().ToString(), DateTime.Now, components);
            Assert.That(() => supply.Validate(), Throws.TypeOf<ValidationException>());
        }

        [Test]
        public void IdIsNotGuidTest()
        {
            var supply = CreateDataModel("id", Guid.NewGuid().ToString(), DateTime.Now, CreateComponents());
            Assert.That(() => supply.Validate(), Throws.TypeOf<ValidationException>());
        }

        [Test]
        public void StorageIdIsNullOrEmptyTest()
        {
            var components = CreateComponents();
            var supply = CreateDataModel(Guid.NewGuid().ToString(), null, DateTime.Now, components);
            Assert.That(() => supply.Validate(), Throws.TypeOf<ValidationException>());

            supply = CreateDataModel(Guid.NewGuid().ToString(), string.Empty, DateTime.Now, components);
            Assert.That(() => supply.Validate(), Throws.TypeOf<ValidationException>());
        }

        [Test]
        public void StorageIdIsNotGuidTest()
        {
            var supply = CreateDataModel(Guid.NewGuid().ToString(), "id", DateTime.Now, CreateComponents());
            Assert.That(() => supply.Validate(), Throws.TypeOf<ValidationException>());
        }

        [Test]
        public void ComponentsListIsEmptyTest()
        {
            var supply = CreateDataModel(Guid.NewGuid().ToString(), Guid.NewGuid().ToString(), DateTime.Now, new List<ComponentInSupplyDataModel>());
            Assert.That(() => supply.Validate(), Throws.TypeOf<ValidationException>());
        }

        [Test]
        public void AllFieldsAreCorrectTest()
        {
            var supplyId = Guid.NewGuid().ToString();
            var storageId = Guid.NewGuid().ToString();
            var date = DateTime.Now;
            var components = CreateComponents();

            var supply = CreateDataModel(supplyId, storageId, date, components);
            Assert.That(() => supply.Validate(), Throws.Nothing);

            Assert.Multiple(() =>
            {
                Assert.That(supply.Id, Is.EqualTo(supplyId));
                Assert.That(supply.StorageId, Is.EqualTo(storageId));
                Assert.That(supply.Date, Is.EqualTo(date));
                Assert.That(supply.Components, Is.EquivalentTo(components));
            });
        }

        private static SupplyDataModel CreateDataModel(string? id, string? storageId, DateTime date, List<ComponentInSupplyDataModel> components) =>
            new(id, storageId, date, components);

        private static List<ComponentInSupplyDataModel> CreateComponents() =>
            new()
            {
            new ComponentInSupplyDataModel(Guid.NewGuid().ToString(), Guid.NewGuid().ToString(), 5),
            new ComponentInSupplyDataModel(Guid.NewGuid().ToString(), Guid.NewGuid().ToString(), 10)
            };
        
    }
}