using RioJoy.Core.Overlay;
using RioJoy.Overlay;
using SkiaSharp;
using Xunit;

namespace RioJoy.Core.Tests.Overlay;

public class ProfileWallpaperGeneratorTests
{
    [Fact]
    public void Generate_WritesWallpaperPng_AtCanvasSize()
    {
        string templatePath = TestRepo.CustomBackground("regions.json");
        OverlayTemplate template = OverlayTemplateStore.Load(templatePath);
        string templateDir = Path.GetDirectoryName(templatePath)!;

        var labels = new Dictionary<string, string> { ["a-00"] = "DEMO", ["b-00"] = "FIRE" };
        string outPath = Path.Combine(Path.GetTempPath(), $"riojoy-wp-{Guid.NewGuid():N}.png");

        try
        {
            string written = new ProfileWallpaperGenerator().Generate(template, templateDir, labels, outPath);

            Assert.Equal(outPath, written);
            Assert.True(File.Exists(outPath));

            using SKBitmap bmp = SKBitmap.Decode(outPath);
            Assert.Equal(template.Width, bmp.Width);
            Assert.Equal(template.Height, bmp.Height);
        }
        finally
        {
            if (File.Exists(outPath)) File.Delete(outPath);
        }
    }

    [Fact]
    public void Generate_WithoutBaseImagePath_Throws()
    {
        var template = new OverlayTemplate { Width = 10, Height = 10 }; // BaseImagePath null
        Assert.Throws<InvalidOperationException>(() =>
            new ProfileWallpaperGenerator().Generate(
                template, ".", new Dictionary<string, string>(),
                Path.Combine(Path.GetTempPath(), $"x-{Guid.NewGuid():N}.png")));
    }
}