using Microsoft.Extensions.Logging;

namespace ZB.MOM.WW.OtOpcUa.Driver.AbLegacy.Tests;

/// <summary>Thread-safe capturing logger shared by the remediation tests (poll loops log from pool threads).</summary>
internal sealed class AbLegacyTestLogger : ILogger<AbLegacyDriver>
{
    /// <summary>Every entry logged, in order.</summary>
    public System.Collections.Concurrent.ConcurrentQueue<(LogLevel Level, string Message)> Entries { get; } = new();

    /// <summary>The Warning-level messages logged.</summary>
    public IReadOnlyList<string> Warnings => [.. Entries.Where(e => e.Level == LogLevel.Warning).Select(e => e.Message)];

    /// <inheritdoc />
    public IDisposable? BeginScope<TState>(TState state) where TState : notnull => null;

    /// <inheritdoc />
    public bool IsEnabled(LogLevel logLevel) => true;

    /// <inheritdoc />
    public void Log<TState>(LogLevel logLevel, EventId eventId, TState state, Exception? exception,
        Func<TState, Exception?, string> formatter) => Entries.Enqueue((logLevel, formatter(state, exception)));
}