using GmRelay.Shared.Domain;
using GmRelay.Shared.Rendering;

namespace GmRelay.Bot.Tests.Rendering;

public sealed class SessionBatchViewBuilderTests
{
    [Fact]
    public void Build_ShouldOrderSessionsByDate()
    {
        var firstSessionId = Guid.NewGuid();
        var secondSessionId = Guid.NewGuid();
        var cancelledSessionId = Guid.NewGuid();

        var sessions = new[]
        {
            new SessionBatchDto(secondSessionId, new DateTime(2026, 4, 27, 18, 0, 0, DateTimeKind.Utc), SessionStatus.Planned, 4),
            new SessionBatchDto(cancelledSessionId, new DateTime(2026, 4, 28, 18, 0, 0, DateTimeKind.Utc), SessionStatus.Cancelled, null),
            new SessionBatchDto(firstSessionId, new DateTime(2026, 4, 26, 18, 0, 0, DateTimeKind.Utc), SessionStatus.Planned, 2)
        };
        var participants = new[]
        {
            new ParticipantBatchDto(secondSessionId, "Alice", "alice", ParticipantRegistrationStatus.Active),
            new ParticipantBatchDto(secondSessionId, "Charlie", null, ParticipantRegistrationStatus.Waitlisted),
            new ParticipantBatchDto(cancelledSessionId, "Bob", null, ParticipantRegistrationStatus.Active)
        };

        var result = SessionBatchViewBuilder.Build("Campaign", sessions, participants);

        Assert.Equal("Campaign", result.Title);
        Assert.Equal(3, result.Sessions.Count);
        Assert.Equal(firstSessionId, result.Sessions[0].SessionId);
        Assert.Equal(secondSessionId, result.Sessions[1].SessionId);
        Assert.Equal(cancelledSessionId, result.Sessions[2].SessionId);
    }

    [Fact]
    public void Build_ShouldCalculatePlayerCounts()
    {
        var sessionId = Guid.NewGuid();
        var sessions = new[] { new SessionBatchDto(sessionId, DateTime.UtcNow, SessionStatus.Planned, 4) };
        var participants = new[]
        {
            new ParticipantBatchDto(sessionId, "Alice", "alice", ParticipantRegistrationStatus.Active),
            new ParticipantBatchDto(sessionId, "Bob", null, ParticipantRegistrationStatus.Active),
            new ParticipantBatchDto(sessionId, "Charlie", null, ParticipantRegistrationStatus.Waitlisted)
        };

        var result = SessionBatchViewBuilder.Build("Test", sessions, participants);
        var session = result.Sessions[0];

        Assert.Equal(2, session.ActivePlayerCount);
        Assert.Equal(4, session.MaxPlayers);
        Assert.Equal(2, session.ActivePlayers.Count);
        Assert.Equal(1, session.WaitlistedPlayers.Count);
    }

    [Fact]
    public void Build_ShouldIncludeActionsForActiveSessions()
    {
        var sessionId = Guid.NewGuid();
        var sessions = new[] { new SessionBatchDto(sessionId, DateTime.UtcNow, SessionStatus.Planned, 4) };
        var participants = Array.Empty<ParticipantBatchDto>();

        var result = SessionBatchViewBuilder.Build("Test", sessions, participants);
        var actions = result.Sessions[0].AvailableActions;

        Assert.Equal(2, actions.Count);
        Assert.Equal("join_session", actions[0].ActionKey);
        Assert.Equal("leave_session", actions[1].ActionKey);
        Assert.Equal(sessionId, actions[0].SessionId);
        Assert.Equal(sessionId, actions[1].SessionId);
    }

    [Fact]
    public void Build_ShouldNotIncludeActionsForCancelledSessions()
    {
        var sessionId = Guid.NewGuid();
        var sessions = new[] { new SessionBatchDto(sessionId, DateTime.UtcNow, SessionStatus.Cancelled, null) };
        var participants = Array.Empty<ParticipantBatchDto>();

        var result = SessionBatchViewBuilder.Build("Test", sessions, participants);

        Assert.Empty(result.Sessions[0].AvailableActions);
    }

    [Fact]
    public void Build_ShouldMarkWaitlistActionWhenFull()
    {
        var sessionId = Guid.NewGuid();
        var sessions = new[] { new SessionBatchDto(sessionId, DateTime.UtcNow, SessionStatus.Planned, 1) };
        var participants = new[] { new ParticipantBatchDto(sessionId, "Alice", "alice", ParticipantRegistrationStatus.Active) };

        var result = SessionBatchViewBuilder.Build("Test", sessions, participants);
        var joinAction = result.Sessions[0].AvailableActions.First(a => a.ActionKey == "join_session");

        Assert.Contains("ожидания", joinAction.Label);
    }

    [Fact]
    public void Build_ShouldIncludePlayerUsernames()
    {
        var sessionId = Guid.NewGuid();
        var sessions = new[] { new SessionBatchDto(sessionId, DateTime.UtcNow, SessionStatus.Planned, null) };
        var participants = new[] { new ParticipantBatchDto(sessionId, "Alice", "alice", ParticipantRegistrationStatus.Active) };

        var result = SessionBatchViewBuilder.Build("Test", sessions, participants);
        var player = result.Sessions[0].ActivePlayers[0];

        Assert.Equal("Alice", player.DisplayName);
        Assert.Equal("alice", player.TelegramUsername);
    }
}