// Licensed to the .NET Foundation under one or more agreements.
// The .NET Foundation licenses this file to you under the MIT license.
 
using System.Runtime.CompilerServices;
using System.Threading.Channels;
using Aspire.Hosting.ConsoleLogs;
 
namespace Aspire.Hosting.Tests.Utils;
 
internal sealed class TestConsoleLogsService : IConsoleLogsService
{
    private readonly Func<string, Channel<IReadOnlyList<LogEntry>>>? _getConsoleLogsChannel;
 
    public TestConsoleLogsService(Func<string, Channel<IReadOnlyList<LogEntry>>>? getConsoleLogsChannel = null)
    {
        _getConsoleLogsChannel = getConsoleLogsChannel;
    }
 
    public async IAsyncEnumerable<IReadOnlyList<LogEntry>> GetAllLogsAsync(string resourceName, [EnumeratorCancellation] CancellationToken cancellationToken)
    {
        if (_getConsoleLogsChannel == null)
        {
            throw new InvalidOperationException("No console logs writer.");
        }
 
        var channel = _getConsoleLogsChannel(resourceName);
 
        await foreach (var result in channel.Reader.ReadAllAsync(cancellationToken))
        {
            yield return result;
        }
    }
}