using StackExchange.Redis;

namespace BotSharp.Core.Infrastructures.Events;

public class RedisPublisher : IEventPublisher
{
    private readonly IConnectionMultiplexer _redis;
    private readonly ISubscriber _subscriber;
    private readonly ILogger _logger;

    public RedisPublisher(IConnectionMultiplexer redis, ILogger<RedisPublisher> logger)
    {
        _redis = redis;
        _logger = logger;
        _subscriber = _redis.GetSubscriber();
    }

    public async Task BroadcastAsync(string channel, string message)
    {
        await _subscriber.PublishAsync(channel, message);
    }

    public async Task PublishAsync(string channel, string message)
    {
        var db = _redis.GetDatabase();
        // Add a message to the stream, keeping only the latest 1 million messages
        await db.StreamAddAsync(channel, "message", message, 
            maxLength: 1000 * 10000);

        _logger.LogInformation($"Published message {channel} {message}");
    }
}