using MeterVault.Core.Domain;

namespace MeterVault.Core.Tests;

/// <summary>
/// Which connector serves which source. The source dialog and the connector page's way back both lean
/// on it, and a wrong answer produces a source that saves cleanly and never ingests.
/// </summary>
public sealed class SourceRoutingTests
{
    [Theory]
    [InlineData(SourceType.HomeAssistant, EndpointType.HomeAssistant)]
    [InlineData(SourceType.Mqtt, EndpointType.MqttBroker)]
    [InlineData(SourceType.Tasmota, EndpointType.MqttBroker)]
    public void Live_sources_need_a_connector(SourceType source, EndpointType endpoint)
    {
        Assert.Equal(endpoint, SourceRouting.RequiredEndpoint(source));
        Assert.True(SourceRouting.Serves(endpoint, source));
    }

    [Theory]
    [InlineData(SourceType.Manual)]
    [InlineData(SourceType.Import)]
    [InlineData(SourceType.Virtual)]
    public void Other_sources_need_none(SourceType source)
    {
        Assert.Null(SourceRouting.RequiredEndpoint(source));
        Assert.All(Enum.GetValues<EndpointType>(), endpoint => Assert.False(SourceRouting.Serves(endpoint, source)));
    }

    [Fact]
    public void A_connector_never_serves_the_other_kind()
    {
        Assert.False(SourceRouting.Serves(EndpointType.HomeAssistant, SourceType.Tasmota));
        Assert.False(SourceRouting.Serves(EndpointType.MqttBroker, SourceType.HomeAssistant));
    }

    [Fact]
    public void Every_connector_kind_defaults_to_a_source_it_serves()
    {
        foreach (var endpoint in Enum.GetValues<EndpointType>())
        {
            Assert.True(SourceRouting.Serves(endpoint, SourceRouting.DefaultSourceFor(endpoint)));
        }
    }
}