using ClaudeDo.Data.Models;
using ClaudeDo.Ui.ViewModels.Islands;
using Xunit;
using TaskStatus = ClaudeDo.Data.Models.TaskStatus;

namespace ClaudeDo.Ui.Tests.ViewModels;

/// <summary>
/// [UX-Struktur A2/A4] Group 1's disabled-reason properties (grayed out with an explanation
/// instead of hidden — see task A1) and the hover-or-selected gate for the optional row actions.
/// </summary>
public class TaskRowContextMenuTests
{
    private static TaskRowViewModel MakeRow() => new() { Id = "t1" };

    [Fact]
    public void SendToQueueDisabledReason_Null_When_Sendable()
    {
        var row = MakeRow();
        row.Status = TaskStatus.Idle;
        Assert.True(row.CanSendToQueue);
        Assert.Null(row.SendToQueueDisabledReason);
    }

    [Fact]
    public void SendToQueueDisabledReason_Set_When_AlreadyQueued()
    {
        var row = MakeRow();
        row.Status = TaskStatus.Queued;
        Assert.False(row.CanSendToQueue);
        Assert.NotNull(row.SendToQueueDisabledReason);
    }

    [Fact]
    public void SendToQueueDisabledReason_Set_When_Manual()
    {
        var row = MakeRow();
        row.Status = TaskStatus.Idle;
        row.IsManual = true;
        Assert.False(row.CanSendToQueue);
        Assert.NotNull(row.SendToQueueDisabledReason);
    }

    [Fact]
    public void CancelDisabledReason_Null_While_Running()
    {
        var row = MakeRow();
        row.Status = TaskStatus.Running;
        Assert.Null(row.CancelDisabledReason);
    }

    [Fact]
    public void CancelDisabledReason_Set_When_NotRunning()
    {
        var row = MakeRow();
        row.Status = TaskStatus.Idle;
        Assert.NotNull(row.CancelDisabledReason);
    }

    [Theory]
    [InlineData(TaskStatus.Idle)]
    [InlineData(TaskStatus.Running)]
    [InlineData(TaskStatus.Done)]
    public void QuickSessionDisabledReason_Is_Always_Null(TaskStatus status)
    {
        var row = MakeRow();
        row.Status = status;
        row.IsManual = true;
        Assert.Null(row.QuickSessionDisabledReason);
    }

    [Fact]
    public void RefineDisabledReason_Null_When_Refinable()
    {
        var row = MakeRow();
        row.Status = TaskStatus.Idle;
        Assert.True(row.CanRefine);
        Assert.Null(row.RefineDisabledReason);
    }

    [Fact]
    public void RefineDisabledReason_Set_When_Manual()
    {
        var row = MakeRow();
        row.Status = TaskStatus.Idle;
        row.IsManual = true;
        Assert.False(row.CanRefine);
        Assert.NotNull(row.RefineDisabledReason);
    }

    [Fact]
    public void RefineDisabledReason_Set_When_Refining()
    {
        var row = MakeRow();
        row.Status = TaskStatus.Idle;
        row.IsRefining = true;
        Assert.False(row.CanRefine);
        Assert.NotNull(row.RefineDisabledReason);
    }

    [Fact]
    public void RefineDisabledReason_Set_When_NotIdle()
    {
        var row = MakeRow();
        row.Status = TaskStatus.Running;
        Assert.False(row.CanRefine);
        Assert.NotNull(row.RefineDisabledReason);
    }

    [Fact]
    public void PlanningDisabledReason_Null_When_OpenAvailable()
    {
        var row = MakeRow();
        row.Status = TaskStatus.Idle;
        Assert.True(row.CanOpenPlanningSession);
        Assert.Null(row.PlanningDisabledReason);
    }

    [Fact]
    public void PlanningDisabledReason_Null_When_PlanningActive()
    {
        var row = MakeRow();
        row.Status = TaskStatus.Idle;
        row.PlanningPhase = PlanningPhase.Active;
        Assert.True(row.CanResumeOrDiscardPlanning);
        Assert.Null(row.PlanningDisabledReason);
    }

    [Fact]
    public void PlanningDisabledReason_Set_When_Finalized()
    {
        var row = MakeRow();
        row.Status = TaskStatus.Idle;
        row.PlanningPhase = PlanningPhase.Finalized;
        Assert.False(row.CanOpenPlanningSession);
        Assert.False(row.CanResumeOrDiscardPlanning);
        Assert.False(row.CanFinalizePlanning);
        Assert.NotNull(row.PlanningDisabledReason);
    }

    [Fact]
    public void PlanningDisabledReason_Set_When_Manual()
    {
        var row = MakeRow();
        row.Status = TaskStatus.Idle;
        row.IsManual = true;
        Assert.NotNull(row.PlanningDisabledReason);
    }

    [Theory]
    [InlineData(false, false, false)]
    [InlineData(true,  false, true)]
    [InlineData(false, true,  true)]
    [InlineData(true,  true,  true)]
    public void ShowRowActions_Follows_Hover_Or_Selection(bool isHovered, bool isSelected, bool expected)
    {
        var row = MakeRow();
        row.IsHovered = isHovered;
        row.IsSelected = isSelected;
        Assert.Equal(expected, row.ShowRowActions);
    }
}