using AcDream.App.UI;

namespace AcDream.App.Tests.UI;

public class MarkupDocumentTests
{
    private sealed class FakeBinding
    {
        public float HealthPercent => 0.5f;
        public uint? HealthCurrent => 109;
        public uint? HealthMax => 218;
        public float? ManaPercent => null;
        public uint? ManaCurrent => null;
        public uint? ManaMax => null;
    }

    [Fact]
    public void Build_CreatesPanelWithMeterFillLabelAndGeometry()
    {
        const string xml =
            "<panel id=\"acdream.vitals\" x=\"10\" y=\"30\" w=\"220\" h=\"96\" title=\"Vitals\">" +
            "  <meter id=\"health\" x=\"8\" y=\"24\" w=\"200\" h=\"14\" fill=\"{HealthPercent}\" cur=\"{HealthCurrent}\" max=\"{HealthMax}\" color=\"#FFFF0000\"/>" +
            "</panel>";

        var panel = MarkupDocument.Build(xml, new FakeBinding(), _ => ((uint)1, 32, 32));

        Assert.IsType<UiNineSlicePanel>(panel);
        Assert.Equal(10f, panel.Left);
        Assert.Equal(220f, panel.Width);
        Assert.Equal(2, panel.Children.Count);            // title UiLabel + 1 meter
        var meter = Assert.IsType<UiMeter>(panel.Children[1]);
        Assert.Equal(8f, meter.Left);
        Assert.Equal(200f, meter.Width);
        Assert.Equal(0.5f, meter.Fill());
        Assert.Equal("109/218", meter.Label());
    }

    [Fact]
    public void Build_NullBindingValuesYieldNullFillAndLabel()
    {
        const string xml =
            "<panel id=\"v\" x=\"0\" y=\"0\" w=\"10\" h=\"10\" title=\"V\">" +
            "  <meter id=\"mana\" x=\"0\" y=\"0\" w=\"10\" h=\"2\" fill=\"{ManaPercent}\" cur=\"{ManaCurrent}\" max=\"{ManaMax}\" color=\"#FF0000FF\"/>" +
            "</panel>";
        var panel = MarkupDocument.Build(xml, new FakeBinding(), _ => ((uint)1, 32, 32));
        var meter = Assert.IsType<UiMeter>(panel.Children[1]);
        Assert.Null(meter.Fill());
        Assert.Null(meter.Label());
    }
}