using System;
using System.Threading;
using System.Threading.Tasks;
using FinlyticCore.Models;
using FinlyticCore.Util;
using Microsoft.Extensions.Configuration;
using Microsoft.Extensions.Hosting;
using Microsoft.Extensions.Logging;

namespace FinlyticBackend.Util;

/// <summary>
/// Managed MQTT client for web gateway endpoints enabling RPC communication with background microservices.
/// </summary>
public class WebMqttClient : ManagedMqttClient, IHostedService
{
    private readonly ILogger<WebMqttClient> _logger;
    private readonly IConfiguration _configuration;

    public WebMqttClient(ILogger<WebMqttClient> logger, IConfiguration configuration) : base(logger)
    {
        _logger = logger;
        _configuration = configuration;
    }

    public async Task StartAsync(CancellationToken cancellationToken)
    {
        var config = new MqttConfiguration
        {
            Host = _configuration["MQTT:Host"] ?? _configuration["MQTT__Host"] ?? "localhost",
            Port = Convert.ToInt32(_configuration["MQTT:Port"] ?? _configuration["MQTT__Port"] ?? "1883"),
            ClientId = $"{(_configuration["MQTT:ClientId"] ?? _configuration["MQTT__ClientId"] ?? "finlytic_backend_rpc")}_{Guid.NewGuid()}"
        };

        _logger.LogInformation("Starting Web MQTT RPC Client. Host: {Host}, ClientId: {ClientId}", config.Host, config.ClientId);
        await ConnectAsync(config);
    }

    public async Task StopAsync(CancellationToken cancellationToken)
    {
        _logger.LogInformation("Stopping Web MQTT RPC Client.");
        await DisconnectAsync();
    }

    protected override async Task OnConnectedAsync()
    {
        _logger.LogInformation("Web MQTT RPC client connected. Subscribing to RPC response channels...");
        await SubscribeAsync("services/response/news_Get/#");
        await SubscribeAsync("services/response/news_GetDaily/#");
        await SubscribeAsync("services/response/sentiment_GetArticle/#");
        await SubscribeAsync("services/response/sentiment_GetIsin/#");
        await SubscribeAsync("services/response/fundamentals_Get/#");
        await SubscribeAsync("services/response/events_GetAll/#");
        await SubscribeAsync("services/response/events_GetByMonth/#");
        await SubscribeAsync("services/response/ta_GetAnalysis/#");
        await SubscribeAsync("services/response/tr_GetLivePrice/#");
        await SubscribeAsync("services/response/assets_Get/#");
        await SubscribeAsync("services/response/assets_Search/#");
        await SubscribeAsync("services/response/assets_GetDiscovery/#");
        await SubscribeAsync("services/response/trades_Get/#");

        await SubscribeAsync("services/response/trades_Close/#");
        await SubscribeAsync("services/response/analyzer_TriggerManual/#");
        await SubscribeAsync("services/response/health_Ping/#");
    }

    protected override Task OnMessageReceivedAsync(string topic, string payload)
    {
        return Task.CompletedTask;
    }
}