using System.Reactive.Linq;
using InnovEnergy.Lib.Devices.IEM3kGridMeter;
using InnovEnergy.Lib.Protocols.DBus;
using InnovEnergy.Lib.Protocols.Modbus.Clients;
using InnovEnergy.Lib.Utils;
using InnovEnergy.Lib.Utils.Reflection;
using InnovEnergy.Lib.Victron.VeDBus;

namespace InnovEnergy.App.SchneiderDriver;

public static class SchneiderMeterDriver
{
    
    public static Task<Exception> Run(String hostName, Bus dbusAddress)
    {
        return Run(hostName, ModbusTcpClient.DefaultPort, dbusAddress);
    }
    public static async Task<Exception> Run(String hostName, UInt16 port, Bus dbusAddress)
    {
        // var ep = new UnixDomainSocketEndPoint("/home/eef/graber_dbus.sock");
        // var auth = AuthenticationMethod.ExternalAsRoot();
        // dbusAddress = new Bus(ep, auth);

        var schneider = new Iem3KGridMeterDevice(hostName, port, Config.ModbusNodeId);

       
        var schneiderStatus = Observable
                         .Interval(Config.UpdatePeriod)
                         .Select(_ => schneider.Read())
                         .Publish();

        var x = schneider.Read();
        
        // Print the output of schneider.Read()
        if (x != null)
        {
            Console.WriteLine("Schneider Read Output:");
            Console.WriteLine($"ActivePowerL1: {x.ActivePowerL1}");
            Console.WriteLine($"ActivePowerL2: {x.ActivePowerL2}");
            Console.WriteLine($"ActivePowerL3: {x.ActivePowerL3}");
            // Add more properties if needed
        }
        else
        {
            Console.WriteLine("Failed to read data from Schneider device.");
        }
        
        var poller = schneiderStatus.Connect();

        var properties = Config.DefaultProperties;
      
        
        // Step 1: Access Config.Signals
        var signalsCollection = Config.Signals;
        
        /*var signals = Config
                     .Signals
                     .Select(signal => schneiderStatus.Select(signal.ToVeProperty))
                     .Merge()
                     .Do(p => properties.Set(p));*/
        
        var signals = Config
            .Signals
            .Select(signal => schneiderStatus
                .Select(reading =>
                {
                    var property = signal.ToVeProperty(reading);
                    if (property == null)
                    {
                        Console.WriteLine($"Warning: Signal {signal} produced a null property.");
                    }
                    else
                    {
                        Console.WriteLine($"Transformed Signal to Property: {property}");
                    }
                    return property;
                })
                .Where(property => property != null))
            .Merge()
            .Do(p =>
            {
                Console.WriteLine($"Setting property: {p}");
                properties.Set(p);
            });
        
        // Log initial signals
        /*Console.WriteLine("Initial Signals:");
        foreach (var signal in signalsCollection)
        {
            Console.WriteLine($"Signal: {signal}");
        }*/

        // TODO: remove when possible
        // Apparently some VE services need to be periodically reminded that
        // this service is /Connected
        Console.WriteLine("Goes to subscribe");
        schneiderStatus.Subscribe(_ => properties.Set("/Connected", 1));
        Console.WriteLine("Subscribed successfully");
        
        // Wait until status is read once to make sure all
        // properties are set when we go onto the bus.
        var dbus = schneiderStatus
                  .Skip(1)
                  .Take(1)
                  .SelectMany(_ => PublishPropertiesOnDBus(properties, dbusAddress));

        return await signals
            .MergeErrors(dbus)
            .Finally(poller.Dispose)
            .SelectErrors();

    }

    
    private static Task<Exception> PublishPropertiesOnDBus(VeProperties properties, Bus bus)
    {
        Console.WriteLine($"Connecting to DBus {bus}");
        return properties.PublishOnDBus(bus, Config.BusName);
    }
}