using System.Diagnostics.CodeAnalysis;
using System.Text.Json;
using Models.Model.Backend;
using Models.Model.External;
using NetMQ;
using NetMQ.Sockets;

namespace Manager;

public static class Commands
{
    public static void GetProgress()
    {
        Console.WriteLine("Getting progress ...");
        
        CommunicationObject communicationObject = new();
        communicationObject.Command = CommunicationCommand.GetScanningProgress;
        
        ScanningStatus temp = GetProgress(communicationObject);
        
        Console.WriteLine($"Total filtered:           {temp.TotalFiltered:n0}");
        Console.WriteLine($"Total discarded:          {temp.TotalDiscarded:n0}");
        Console.WriteLine($"Total percentage scanned: {temp.PercentageOfIpv4Scanned}");
        Console.WriteLine($"Total Ips left:           {temp.AmountOfIpv4Left:n0}");
        Console.WriteLine($"Filtered DB size:         {temp.FilteredDbSize} Kb");
        Console.WriteLine($"Discarded DB size:        {temp.DiscardedDbSize} Kb");
        Console.WriteLine($"Mydb DB size:             {temp.MyDbSize} Kb");
    }
    
    public static void StopServer()
    {
        CommunicationObject communicationObject = new();
        communicationObject.Command = CommunicationCommand.StopScanning;
        
        Console.WriteLine(SendAndRecieveStringMessage(communicationObject));
    }
    
    public static void Vacuum()
    {
        CommunicationObject communicationObject = new();
        communicationObject.Command = CommunicationCommand.DbVacuum;
        
        Console.WriteLine(SendAndRecieveStringMessage(communicationObject));
    }
    
    public static void ReIndex()
    {
        CommunicationObject communicationObject = new();
        communicationObject.Command = CommunicationCommand.DbReindex;
        
        Console.WriteLine(SendAndRecieveStringMessage(communicationObject));
    }

    public static void SetRuntimeVariable(RuntimeVariable runtimeVariable, string value)
    {
        CommunicationObject communicationObject = new()
        {
            Command = CommunicationCommand.ChangeRuntimeVariable,
            Variable = runtimeVariable.ToString(),
            VariableValue = value
        };
        
        SendAndRecieveStringMessage(communicationObject);
    }
    
    public static void GetHelp()
    {
        Console.WriteLine("Available commands:");
        Console.WriteLine("  stop  - stops the server");
        Console.WriteLine("  clear - clears the console");
        Console.WriteLine("  q     - quits the program");
        Console.WriteLine("  p     - print the progress information of the scanner");
        Console.WriteLine("  g     - manual garbage collect on the server");
        Console.WriteLine("  r     - manual reindex the databases");
        Console.WriteLine("  v     - manual vacuum the databases");
        Console.WriteLine("  R     - change runtime variable");
        Console.WriteLine("  lR    - list runtime variables");
        Console.WriteLine("  help  - shows this help");
        Console.WriteLine();
    }
    
    public static void PrintRuntimeVariables()
    {
        Console.WriteLine("Runtime variables:");
        Console.WriteLine($"{RuntimeVariable.ScannerTimeout.ToString()}   - Sets the timeout in milliseconds for the scanner");
        Console.WriteLine($"{RuntimeVariable.ContentFilter.ToString()}    - Sets the timeout in milliseconds for the content filter");
        Console.WriteLine($"{RuntimeVariable.DbContent.ToString()}        - Sets the wait time in milliseconds for the content database if the queue is empty");
        Console.WriteLine($"{RuntimeVariable.DbDiscarded.ToString()}      - Sets the wait time in milliseconds for the discarded database if the queue is empty");
    }

    [RequiresDynamicCode("Calls System.Text.Json.JsonSerializer.SerializeToUtf8Bytes<TValue>(TValue, JsonSerializerOptions)")]
    [RequiresUnreferencedCode("Calls System.Text.Json.JsonSerializer.SerializeToUtf8Bytes<TValue>(TValue, JsonSerializerOptions)")]
    private static string? SendAndRecieveStringMessage(CommunicationObject communicationObject)
    {
        //byte[] bytes = MessagePackSerializer.Serialize(communicationObject, ContractlessStandardResolver.Options);
        
        byte[] lol = JsonSerializer.SerializeToUtf8Bytes(communicationObject);
        
        using RequestSocket client = new();
        client.Connect("tcp://127.0.0.1:5556");
        client.SendFrame(lol);
        byte[] msg = client.ReceiveFrameBytes();
        client.Close();
        
        return JsonSerializer.Deserialize<string>(msg);
    }

    [RequiresUnreferencedCode("Calls System.Text.Json.JsonSerializer.SerializeToUtf8Bytes<TValue>(TValue, JsonSerializerOptions)")]
    [RequiresDynamicCode("Calls System.Text.Json.JsonSerializer.SerializeToUtf8Bytes<TValue>(TValue, JsonSerializerOptions)")]
    private static ScanningStatus GetProgress(CommunicationObject communicationObject)
    {
        //byte[] bytes = MessagePackSerializer.Serialize(communicationObject, ContractlessStandardResolver.Options);

        byte[] lol = JsonSerializer.SerializeToUtf8Bytes(communicationObject);
        
        
        using RequestSocket client = new();
        client.Connect("tcp://127.0.0.1:5556");
        client.SendFrame(lol);
        byte[] msg = client.ReceiveFrameBytes();
        client.Close();
        
        return JsonSerializer.Deserialize<ScanningStatus>(msg);
    }
}