using PLib.Application.Abstractions;
using PLib.Application.Library;
using PLib.Domain.Videos;

namespace PLib.Tests.Library;

/// <summary>Hand-written double mirroring the EF repository's lookup-by-normalized-name rule.</summary>
internal sealed class InMemoryLabelRepository : ILabelRepository
{
    private readonly List<LibraryLabel> _labels = [];

    public Task<IReadOnlyList<LibraryLabel>> GetAllAsync(CancellationToken cancellationToken = default) =>
        Task.FromResult<IReadOnlyList<LibraryLabel>>([.. _labels]);

    public Task<IReadOnlyList<LabelSummary>> GetSummariesAsync(CancellationToken cancellationToken = default) =>
        Task.FromResult<IReadOnlyList<LabelSummary>>(
            [.. _labels.Select(label => new LabelSummary(label.Id, label.Name, label.Kind, label.Videos.Count, label.ImagePath))]);

    public Task<LibraryLabel?> FindAsync(
        LabelKind kind,
        string name,
        CancellationToken cancellationToken = default)
    {
        var normalized = LibraryLabel.Normalize(name);

        return Task.FromResult(_labels.FirstOrDefault(
            label => label.Kind == kind && label.NormalizedName == normalized));
    }

    public Task AddAsync(LibraryLabel label, CancellationToken cancellationToken = default)
    {
        _labels.Add(label);
        return Task.CompletedTask;
    }

    public Task RemoveAsync(LibraryLabel label, CancellationToken cancellationToken = default)
    {
        _labels.Remove(label);
        return Task.CompletedTask;
    }
}