using System.Diagnostics.CodeAnalysis;
using System.Reactive.Concurrency;
using System.Reactive.Linq;
using System.Reactive.Threading.Tasks;
using CliWrap;
using CliWrap.Buffered;
using InnovEnergy.App.RemoteSupportConsole;
using InnovEnergy.Lib.Utils;
using InnovEnergy.Lib.Victron.VictronVRM;
using SQLite;
using static System.Text.Json.JsonSerializer;
using Installation = InnovEnergy.App.VrmGrabber.DataTypes.Installation;


namespace InnovEnergy.App.VrmGrabber.Database;

public class InstallationDetails
{
    public InstallationDetails(String ip, IReadOnlyList<Detail> details)
    {
        Details = details;
        Ip = ip;
    }

    public IReadOnlyList<Detail>? Details { get; set; }
    public String Ip { get; set; }
}

public static partial class Db 
{
    internal const String DbPath = "./db.sqlite";
    public static Dictionary<Lib.Victron.VictronVRM.Installation, InstallationDetails> InstallationsAndDetails;

    private static SQLiteConnection Connection { get; } = new SQLiteConnection(DbPath);
    public static TableQuery<Installation>              Installations            => Connection.Table<Installation>();
    public static void Init()
    {
        // used to force static constructor
    }
    
    static Db()
    {
        // on startup create/migrate tables

        Connection.RunInTransaction(() =>
        {
            // Connection.CreateTable<Installation>();
        });// on startup create/migrate tables

        InstallationsAndDetails = new Dictionary<Lib.Victron.VictronVRM.Installation, InstallationDetails>();
        
        Observable.Interval(TimeSpan.FromMinutes(5)) //Repeat(0)
            .ObserveOn(TaskPoolScheduler.Default)
            .SubscribeOn(TaskPoolScheduler.Default)
            .StartWith(0) // Do it right away (on startup)
            .Select(UpdateInstallationsAndDetailsFromVrm)
            // .Select(t => t.ToObservable())
            // .Concat()
            .Subscribe(d => InstallationsAndDetails = d, exception => exception.WriteLine());
    }

    [UnconditionalSuppressMessage("Trimming", "IL2026:Members annotated with 'RequiresUnreferencedCodeAttribute' require dynamic access otherwise can break functionality when trimming application code", Justification = "<Pending>")]
    private static Dictionary<Lib.Victron.VictronVRM.Installation, InstallationDetails> UpdateInstallationsAndDetailsFromVrm(Int64 _)
    {
        var fileContent = File.ReadAllTextAsync("./token.json").Result;
        
        var acc = Deserialize<AccToken>(fileContent);
        var user = VrmAccount.Token(acc.idUser, acc.token);
        var installations = user.GetInstallations().Result; 
        return installations.Take(30)
              .Do(i=>i.Name.WriteLine())
              .ToDictionary(i => i, GetInstallationDetails);
    }

    private static InstallationDetails GetInstallationDetails(Lib.Victron.VictronVRM.Installation i)
    {
        // Thread.Sleep(3000);
        IReadOnlyList<Detail> details;
        try
        {
            details = i.GetDetails().Result;
            
            var ip = VpnInfo.LookUpIp(i.Identifier, details.MachineSerial()).Result ?? "Unknown";
        
            if(ip != "Unknown")
                UpdateInstallationName(i, ip);
        
            return new InstallationDetails(ip,details);
        }
        catch (Exception e)
        {
            Console.WriteLine(e);
        }

        return new InstallationDetails("Unkown", Array.Empty<Detail>());
    }

    private static async Task UpdateInstallationName(Lib.Victron.VictronVRM.Installation installation, String ip)
    {
        var command = Cli.Wrap("ssh")
            .WithArguments($@"root@{ip}")
            .AppendArgument("-o StrictHostKeyChecking=accept-new")
            .AppendArgument($"echo '{installation.Name}' > /data/innovenergy/openvpn/installation-name");
        Console.WriteLine(command.ToString());
        var x = await command
            .WithValidation(CommandResultValidation.None).ExecuteBufferedAsync();
        if (x.ExitCode != 0)
        {  Console.WriteLine(x.StandardError);
           Console.WriteLine("Renaming did not work");
        }
    }
}

public class AccToken
{
    public UInt64 idUser { get; init;} 
    public String token { get; init;}
}