using TileServer.Domain;
using TileServer.Domain.Tiles;

namespace TileServer.UnitTests;

public sealed class TileCoordinateTests
{
    [Fact]
    public void Ancestor_ShiftsToParentZoom()
    {
        var child = new TileCoordinate(3, 5, 6);
        Assert.Equal(new TileCoordinate(1, 1, 1), child.Ancestor(1));
        Assert.Equal(child, child.Ancestor(3));
    }

    [Fact]
    public void ToTmsY_FlipsXyzOrigin()
    {
        var tile = new TileCoordinate(3, 1, 0);
        Assert.Equal(7, tile.ToTmsY());
    }

    [Fact]
    public void ClampMaxZoom_CapsAtPlanetilerLimit()
    {
        Assert.Equal(15, PlanetilerLimits.ClampMaxZoom(18));
        Assert.Equal(15, PlanetilerLimits.ClampMaxZoom(15));
        Assert.Equal(0, PlanetilerLimits.ClampMaxZoom(-1));
    }

    [Theory]
    [InlineData(0, 0, 0, true)]
    [InlineData(1, 2, 0, false)]
    [InlineData(-1, 0, 0, false)]
    public void IsValid_RespectsZoomBounds(int z, int x, int y, bool expected)
        => Assert.Equal(expected, new TileCoordinate(z, x, y).IsValid);
}

public sealed class ResourceNameTests
{
    [Theory]
    [InlineData("central-fed-district", true)]
    [InlineData("osm-bright", true)]
    [InlineData("Dark", false)]
    [InlineData("1south", false)]
    [InlineData("", false)]
    public void IsValid_AcceptsLowercaseIds(string value, bool expected)
        => Assert.Equal(expected, ResourceName.IsValid(value));
}