using System.Linq;
using Xunit;
using ytLive.Models;
using ytLive.Services;

namespace ytLive.Tests;

/// <summary>
/// The per-scene source access matrix from the source catalog (TASKS.md).
/// One integration test: each canonical scene allows exactly its matrix set,
/// nothing more; non-canonical scenes allow nothing.
/// </summary>
public class SceneAccessPolicyTests
{
    private static readonly SourceType[] All =
    {
        SourceType.DisplayCapture, SourceType.WindowCapture, SourceType.Background,
        SourceType.Image, SourceType.TextOverlay, SourceType.Chatbox,
        SourceType.Alerts, SourceType.Socials,
    };

    [Fact]
    public void SceneAccessPolicy_Enforces_The_Full_Access_Matrix()
    {
        var allowed = new[]
        {
            (Scene: "Starting", Types: new[]
            {
                SourceType.Background, SourceType.Image, SourceType.TextOverlay,
                SourceType.Alerts, SourceType.Socials,
            }),
            (Scene: "Live", Types: All),
            (Scene: "BRB", Types: new[]
            {
                SourceType.Background, SourceType.Image, SourceType.TextOverlay,
                SourceType.Chatbox, SourceType.Alerts, SourceType.Socials,
            }),
            (Scene: "Chat", Types: new[]
            {
                SourceType.Background, SourceType.Image, SourceType.TextOverlay,
                SourceType.Chatbox, SourceType.Alerts, SourceType.Socials,
            }),
            (Scene: "Ending", Types: new[]
            {
                SourceType.Background, SourceType.Image, SourceType.TextOverlay,
                SourceType.Alerts, SourceType.Socials,
            }),
        };

        foreach (var (scene, types) in allowed)
        {
            foreach (var type in types)
                Assert.True(
                    SceneAccessPolicy.Allows(scene, type),
                    $"{type} should be allowed in {scene}");

            foreach (var type in All.Where(t => !types.Contains(t)))
                Assert.False(
                    SceneAccessPolicy.Allows(scene, type),
                    $"{type} should NOT be allowed in {scene}");
        }

        Assert.False(SceneAccessPolicy.Allows(null, SourceType.Image));
        Assert.False(SceneAccessPolicy.Allows("My Scene", SourceType.Image));
        Assert.False(SceneAccessPolicy.Allows("  ", SourceType.TextOverlay));
    }
}