using ShippingCosts.Contracts;
using ShippingCosts.Implementations;

namespace ShippingCosts.Test;

public sealed class CountryDistanceProviderTests
{
    private readonly ICountryDistanceProvider _provider = new CountryDistanceProvider();

    [Theory]
    [InlineData("India", true)]
    [InlineData("Chile", false)]
    public void IsPossibleCountry(string country, bool isAvailable)
    {
        _provider.IsPossibleCountry(country)
                 .Should().Be(isAvailable);
    }

    [Theory]
    [InlineData("Brazil", 9820, false, false)]
    [InlineData("France", 1036, false, true)]
    [InlineData("Italy", 763, true, true)]
    [InlineData("Japan", 9278, false, false)]
    [InlineData("Switzerland", 692, true, false)]
    public void GetDistanceTo_ExistingCountry(string countryName, int expectedDistance, bool expectedIsDirectNeighbor,
                                              bool expectedIsEuMember)
    {
        _provider.GetDistanceTo(countryName)
                 .Should().NotBeNull("country exists and is in database")
                 .And.BeOfType<CountryDistanceInformation>()
                 .And.Match<CountryDistanceInformation>(x =>
                                                            x.ApproxDistance == expectedDistance &&
                                                            x.IsDirectNeighbor == expectedIsDirectNeighbor &&
                                                            x.IsEuMember == expectedIsEuMember);
    }

    [Theory]
    [InlineData("NonExistingCountry")]
    [InlineData("Atlantis")]
    public void GetDistanceTo_NonExistingCountry(string countryName)
    {
        _provider.GetDistanceTo(countryName).Should().BeNull("country does not exist");
    }

    [Fact]
    public void GetDistanceTo_EmptyCountryName()
    {
        _provider.GetDistanceTo(string.Empty).Should().BeNull("country name is empty");
    }

    [Fact]
    public void GetDistanceTo_NotDefinedCountry()
    {
        _provider.GetDistanceTo("Sweden")
                 .Should().BeNull("country exists, but is not in internal database");
    }
}