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

namespace SoftwareInstallationTests.DataModelsTests;

internal class WarehouseDataModelTests
{
    private WarehouseDataModel warehouse;

    [Test]
    public void IdIsEmptyTest()
    {
        warehouse = CreateDataModel(null, 10, 20, DateTime.Now);
        Assert.That(() => warehouse.Validate(), Throws.TypeOf<ValidationFieldException>());
        warehouse = CreateDataModel(string.Empty, 10, 20, DateTime.Now);
        Assert.That(() => warehouse.Validate(), Throws.TypeOf<ValidationFieldException>());
    }

    [Test]
    public void IdIsNotGuidTest()
    {
        warehouse = CreateDataModel("id", 10, 20, DateTime.Now);
        Assert.That(() => warehouse.Validate(), Throws.TypeOf<ValidationFieldException>());
    }

    [Test]
    public void MinCountIsLessOrZeroTest()
    {
        warehouse = CreateDataModel(Guid.NewGuid().ToString(), 0, 10, DateTime.Now);
        Assert.That(() => warehouse.Validate(), Throws.TypeOf<ValidationFieldException>());
        warehouse = CreateDataModel(Guid.NewGuid().ToString(), -10, 10, DateTime.Now);
        Assert.That(() => warehouse.Validate(), Throws.TypeOf<ValidationFieldException>());
    }

    [Test]
    public void CurrentCountIsLessOrZeroTest()
    {
        warehouse = CreateDataModel(Guid.NewGuid().ToString(), 10, 0, DateTime.Now);
        Assert.That(() => warehouse.Validate(), Throws.TypeOf<ValidationFieldException>());
        warehouse = CreateDataModel(Guid.NewGuid().ToString(), 10, -10, DateTime.Now);
        Assert.That(() => warehouse.Validate(), Throws.TypeOf<ValidationFieldException>());
    }

    [Test]
    public void CurrentCountIsLessThanMinCount()
    {
        warehouse = CreateDataModel(Guid.NewGuid().ToString(), 10, 0, DateTime.Now);
        Assert.That(() => warehouse.Validate(), Throws.TypeOf<ValidationFieldException>());
    }

    public void AllFieldsIsCorrectTest()
    {
        string warehouseId = Guid.NewGuid().ToString();
        int minCount = 10;
        int currentCount = 10;
        DateTime date = DateTime.UtcNow;
        WarehouseDataModel warehouse = CreateDataModel(warehouseId, minCount, currentCount, date);
        Assert.That(() => warehouse.Validate(), Throws.Nothing);
        Assert.Multiple(() =>
        {
            Assert.That(warehouse.Id, Is.EqualTo(warehouseId));
            Assert.That(warehouse.MinCount, Is.EqualTo(minCount));
            Assert.That(warehouse.CurrentCount, Is.EqualTo(currentCount));
            Assert.That(warehouse.ChangeDate, Is.EqualTo(date));
        });
    }

    private static WarehouseDataModel CreateDataModel(string? id, int minCount, int currentCount, DateTime date)
        => new(id, minCount, currentCount, date);
}