using ClaudeDo.Data;
using ClaudeDo.Ui.Services;
using ClaudeDo.Ui.ViewModels.Islands;
using Microsoft.EntityFrameworkCore;
using TaskStatus = ClaudeDo.Data.Models.TaskStatus;

namespace ClaudeDo.Ui.Tests.ViewModels;

// Usability-Audit 2026-09-10: the detail pane showed nothing when a task was blocked on a
// predecessor -- the header bar now renders a "Waiting on #N" line bound straight to the same
// Task.IsWaiting/DependencyWaitLabel TasksIslandViewModel already computes (no new VM logic here).
public class DetailsIslandDependencyWaitTests : IDisposable
{
    private readonly string _dbPath;

    public DetailsIslandDependencyWaitTests()
    {
        _dbPath = Path.Combine(Path.GetTempPath(), $"claudedo_dep_wait_test_{Guid.NewGuid():N}.db");
        using var ctx = NewContext();
        ctx.Database.EnsureCreated();
    }

    public void Dispose()
    {
        try { File.Delete(_dbPath); } catch { }
        try { File.Delete(_dbPath + "-wal"); } catch { }
        try { File.Delete(_dbPath + "-shm"); } catch { }
    }

    private ClaudeDoDbContext NewContext()
    {
        var opts = new DbContextOptionsBuilder<ClaudeDoDbContext>()
            .UseSqlite($"Data Source={_dbPath}")
            .Options;
        return new ClaudeDoDbContext(opts);
    }

    private DetailsIslandViewModel NewVm()
    {
        var factory = new TestDbFactory(NewContext);
        return new DetailsIslandViewModel(factory, new DefaultStub(), new NullServiceProvider(), new ClaudeDo.Ui.Services.MergeCoordinator());
    }

    [Fact]
    public void UnblockedTask_HasNoWaitingLine()
    {
        var vm = NewVm();
        vm.Bind(new TaskRowViewModel { Id = Guid.NewGuid().ToString("N"), Number = 1, Status = TaskStatus.Queued });

        Assert.False(vm.Task!.IsWaiting);
        Assert.Null(vm.Task.DependencyWaitLabel);
    }

    [Fact]
    public void BlockedTask_ExposesWaitingLineViaBoundRow()
    {
        var vm = NewVm();
        var row = new TaskRowViewModel
        {
            Id = Guid.NewGuid().ToString("N"),
            Number = 2,
            Status = TaskStatus.Queued,
            IsBlockedByDependency = true,
            DependencyWaitLabel = "#42",
        };

        vm.Bind(row);

        Assert.True(vm.Task!.IsWaiting);
        Assert.Equal("#42", vm.Task.DependencyWaitLabel);
    }
}