using System;
using System.Linq;
using Paca.Browser.Media;
using Paca.Browser.Tabs;
using Xunit;

namespace Paca.Tests.Browser;

public class ChromeMediaSessionPiPTests
{
    [Fact]
    public void MediaSessionCoordinator_Tracks_Active_Sessions()
    {
        var coordinator = new MediaSessionCoordinator();
        var tabId1 = Guid.NewGuid();
        var tabId2 = Guid.NewGuid();

        coordinator.RegisterOrUpdateSession(new MediaSessionItem(
            tabId1,
            "Cool Music Video",
            "YouTube",
            "https://www.youtube.com/watch?v=123",
            IsPlaying: true,
            SupportsPiP: true,
            Duration: 210.0,
            CurrentPosition: 45.0
        ));

        coordinator.RegisterOrUpdateSession(new MediaSessionItem(
            tabId2,
            "Podcast Episode 99",
            "Spotify",
            "https://open.spotify.com/track/456",
            IsPlaying: false,
            SupportsPiP: false,
            Duration: 3600.0,
            CurrentPosition: 1200.0
        ));

        Assert.Equal(2, coordinator.ActiveSessions.Count);

        var primary = coordinator.GetPrimaryPlayingSession();
        Assert.NotNull(primary);
        Assert.Equal(tabId1, primary.TabId);
        Assert.Equal("Cool Music Video", primary.Title);

        // Update tab1 to paused and tab2 to playing
        coordinator.RegisterOrUpdateSession(primary with { IsPlaying = false });
        var tab2Item = coordinator.ActiveSessions.First(s => s.TabId == tabId2);
        coordinator.RegisterOrUpdateSession(tab2Item with { IsPlaying = true });

        var newPrimary = coordinator.GetPrimaryPlayingSession();
        Assert.NotNull(newPrimary);
        Assert.Equal(tabId2, newPrimary.TabId);

        // Remove session when tab closes
        coordinator.RemoveSession(tabId1);
        Assert.Single(coordinator.ActiveSessions);
        Assert.Equal(tabId2, coordinator.ActiveSessions[0].TabId);
    }

    [Fact]
    public void MediaSessionCoordinator_Generates_Valid_PiP_Scripts()
    {
        var coordinator = new MediaSessionCoordinator();
        var pipScript = coordinator.GeneratePiPInjectionScript();
        Assert.Contains("requestPictureInPicture", pipScript);
        Assert.Contains("document.pictureInPictureElement", pipScript);

        var toggleScript = coordinator.GeneratePlayPauseToggleScript();
        Assert.Contains(".paused", toggleScript);
        Assert.Contains(".play()", toggleScript);
        Assert.Contains(".pause()", toggleScript);
    }

    [Fact]
    public void OmniboxActionEvaluator_Matches_Media_And_PiP()
    {
        var pipActions = OmniboxActionEvaluator.GetMatchingActions("pip");
        Assert.Contains(pipActions, a => a.ActionId == "action:media-controls");

        var mediaActions = OmniboxActionEvaluator.GetMatchingActions("미디어 컨트롤");
        Assert.Contains(mediaActions, a => a.ActionId == "action:media-controls");

        var action = OmniboxActionEvaluator.AllActions.FirstOrDefault(a => a.ActionId == "action:media-controls");
        Assert.NotNull(action);
        Assert.Contains("PIP", action.DisplayTitle);
    }
}