using GTANetworkAPI;
using Newtonsoft.Json;
using ReallifeGamemode.Database.Entities;
using ReallifeGamemode.Database.Models;
using ReallifeGamemode.Server.Extensions;
using ReallifeGamemode.Server.Job;
using ReallifeGamemode.Server.Services;
using ReallifeGamemode.Server.Util;
using ReallifeGamemode.Services;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Reflection;

namespace ReallifeGamemode.Server.Managers
{
  public class JobManager : Script
  {
    private static List<JobBase> _jobs = new List<JobBase>();

    public static void LoadJobs()
    {
      IEnumerable<Type> jobTypes = Assembly.GetExecutingAssembly().GetTypes().Where(t => t.IsSubclassOf(typeof(JobBase)) && !t.IsAbstract);

      foreach (var type in jobTypes)
      {
        var instance = Activator.CreateInstance(type) as JobBase;
        if (GetJob(instance.Id) != null)
        {
          throw new InvalidOperationException($"Double Job ID found: {instance.Id} | {instance.Name}");
        }
        _jobs.Add(instance);
        NAPI.Util.ConsoleOutput($"Loading job {instance.Name}");      
      }
      NAPI.Util.ConsoleOutput($"Loaded {_jobs.Count} jobs");
    }

    public static JobBase GetJob(int id) => _jobs.Where(j => j.Id == id).FirstOrDefault();

    public static T GetJob<T>() where T : JobBase
    {
      return _jobs.Where(j => j.GetType() == typeof(T)).FirstOrDefault() as T;
    }

    public static List<JobBase> GetJobs() => _jobs.OrderBy(j => j.Id).ToList();

    [RemoteEvent("CLIENT:JobCenter_CancelJob")]
    public void CancelJobEvent(Player player)
    {
      using (var dbContext = new DatabaseContext())
      {
        User u = player.GetUser(dbContext);

        if (u == null) return;

        if (u.JobId == null)
        {
          ChatService.ErrorMessage(player, "Du hast momentan keinen Job, den du kündigen könntest.");
          return;
        }

        u.JobId = null;

        ChatService.SendMessage(player, "~y~[JOBCENTER]~s~ Du hast deinen Job erfolgreich gekündigt.");

        dbContext.SaveChanges();
      }
    }

    [RemoteEvent("CLIENT:JobCenter_AcceptJob")]
    public void AcceptJobEvent(Player player, int jobId)
    {
      using (var dbContext = new DatabaseContext())
      {
        User u = player.GetUser(dbContext);

        if (u == null) return;

        if (u.JobId != null)
        {
          ChatService.ErrorMessage(player, "Du musst deinen alten Job kündigen, bevor du einen neuen ausüben kannst");
          return;
        }

        JobBase job = JobManager.GetJob(jobId);

        if (job == null)
        {
          ChatService.ErrorMessage(player, "Bei der Job-Annahme ist ein Fehler aufgetretet: Dieser Job wurde nicht gefunden");
          return;
        }

        ChatService.SendMessage(player, $"~y~[JOBCENTER]~s~ Du hast erfolgreich deinen neuen Job: ~o~{job.Name}~s~ angenommen.");

        u.JobId = jobId;

        dbContext.SaveChanges();
      }
    }

    [RemoteEvent("CLIENT:JobManager_ShowJobMenu")]
    public void ShowJobMenuEvent(Player player)
    {
      User u = player.GetUser();

      if (u.JobId == null) return;

      JobBase job = GetJob(u.JobId.Value);

      dynamic data = null;

      if (job.Id == 1 && job.GetUsersInJob().Contains(player))
      {
        var taxiCalls = JobManager.GetJob<TaxiDriverJob>().TaxiContracts;
        if (!taxiCalls.Any(t => t.Driver?.Handle == player.Handle)) // Spieler in keiner aktiven Fahrt
        {
          data = new
          {
            job.Id,
            Status = 0,
            JobData = new
            {
              TaxiCalls = taxiCalls
                  .Where(t => t.Driver == null)
                  .Select(t => new
                  {
                    t.Name,
                    Distance = Math.Round(t.Position.DistanceTo(player.Position), 0)
                  })
                  .OrderBy(t => t.Distance)
            }
          };
        }
        else // Spieler in aktiver Fahrt
        {
          data = new
          {
            job.Id,
            Status = 1,
            JobData = new
            {
              taxiCalls.Where(t => t.Driver.Handle == player.Handle).First().Name
            }
          };
        }

      }

      var json = JsonConvert.SerializeObject(data);

      player.TriggerEvent("SERVER:Job_ShowJobMenu", job.Name, json);
    }

    [RemoteEvent("CLIENT:Job_StartJob")]
    public void StartJobEvent(Player player)
    {
      User u = player.GetUser();

      if (u.JobId == null) return;

      JobBase job = GetJob(u.JobId.Value);

      if (job.GetUsersInJob().Contains(player))
      {
        ChatService.ErrorMessage(player, "Du bist schon in deinem Job aktiv");
        return;
      }

      if (job.NeedVehicleToStart && !job.GetJobVehicles().Any(v => v.GetVehicle().Handle.Value == player.Vehicle?.Handle.Value))
      {
        ChatService.ErrorMessage(player, "Zum Start dieses Jobs musst du in einem Jobfahrzeug sein");
        return;
      }

      job.StartJob(player);
    }

    [RemoteEvent("CLIENT:Job_StopJob")]
    public void StopJob(Player player)
    {
      User u = player.GetUser();

      if (u.JobId == null) return;

      JobBase job = GetJob(u.JobId.Value);

      if (!job.GetUsersInJob().Contains(player))
      {
        ChatService.ErrorMessage(player, "Du führst deinen Job momentan nicht aus");
        return;
      }

      if (job.NeedVehicleToStart && player.Vehicle != null)
      {
        VehicleStreaming.SetEngineState(player.Vehicle, false);
      }

      job.StopJob(player);
    }

    [ServerEvent(Event.PlayerExitVehicle)]
    public void JobManagerPlayerExitVehicle(Player player, Vehicle veh)
    {
      User u = player.GetUser();

      if (u.JobId == null) return;

      JobBase job = GetJob(u.JobId.Value);

      if (job.GetUsersInJob().Contains(player) && job.NeedVehicleToStart)
      {
        job.StopJob(player);
        return;
      }
    }

    [ServerEvent(Event.PlayerEnterVehicle)]
    public void JobManagerPlayerEnterVehicle(Player player, Vehicle veh, sbyte seat)
    {
      if (seat == 0) return;
      ServerVehicle sVeh = veh.GetServerVehicle();
      if (sVeh == null) return;
      if (sVeh is JobVehicle jV && jV.JobId == 1) // Spieler steigt in Taxi ein
      {
        var taxiJob = JobManager.GetJob<TaxiDriverJob>();

        Player driver = veh.GetDriver();
        if (!driver.HasData("DriverPrice")) return;
        int taxiPrice = driver.GetData<int>("DriverPrice");
        float km = 0;
        if (!driver.HasData("FareKm")) { driver.SetData<float>("FareKm", km); }
        km = driver.GetData<float>("FareKm");
        if (driver.HasData("Passager")) return;
        driver.SetData<int>("Passager", player.GetUser().Id);
        driver.SetData<bool>("hasPassager", true);
        using (var dbContext = new DatabaseContext())
        {
          User contractUser = player.GetUser(dbContext);
          contractUser.Handmoney -= (int)Math.Round(km * taxiPrice);
          dbContext.SaveChanges();
          contractUser.Player.TriggerEvent("SERVER:SET_HANDMONEY", contractUser.Handmoney);
        }
        player.TriggerEvent("CLIENT:startCustomerFare", taxiPrice, km);

        var taxiContracts = taxiJob.TaxiContracts.Where(t => t.Name == player.Name);
        if (taxiContracts.Count() == 0) return;

        var contract = taxiContracts.First();
        taxiJob.TaxiContracts.Remove(contract);

        if (driver != null && contract.Driver != null && contract.Driver.Handle != veh.GetDriver().Handle)
        {
          ChatService.SendMessage(contract.Driver, $"!{{02FCFF}}{player.Name} ist in ein Taxi eingestiegen, der Auftrag wurde beendet.");
          ChatService.SendMessage(player, $"!{{02FCFF}}Du bist in ein Taxi eingestiegen, der Auftrag wurde beendet.");
        }      
      }
    }

    [ServerEvent(Event.PlayerExitVehicle)]
    public void JobManagerPlayerEnterVehicle(Player player, Vehicle veh)
    {
      ServerVehicle sVeh = veh.GetServerVehicle();
      if (sVeh == null) return;
      if (sVeh is JobVehicle jV && jV.JobId == 1) // Spieler steigt in Taxi aus
      {
        var taxiJob = JobManager.GetJob<TaxiDriverJob>();
        if (veh.Occupants.Count == 0) return;
        Player driver = veh.GetDriver();
        if (driver == null) return;
        if (player.GetUser().Id != driver.GetData<int>("Passager")) { player.TriggerEvent("CLIENT:cancelFare"); return; }
        player.TriggerEvent("CLIENT:cancelFareCustomer");
        driver.TriggerEvent("CLIENT:resetFareClock");
        driver.ResetData("Passager");
        driver.ResetData("hasPassager");
        driver.SetData<float>("FareKm", 0);
        foreach (Player occupant in veh.Occupants)
        {
          if (occupant == driver) continue;
          occupant.WarpOutOfVehicle();
        }
      }
    }


    [RemoteEvent("CLIENT:JobManager_TaxiJob_AcceptCall")]
    public void TaxiJobAcceptCall(Player player, string name)
    {
      var taxiJob = JobManager.GetJob<TaxiDriverJob>();

      if (!taxiJob.TaxiContracts.Any(t => t.Name == name))
      {
        ChatService.ErrorMessage(player, "Dieser Spieler hat kein Taxi gerufen oder der Auftrag ist nicht mehr aktuell");
        return;
      }

      var job = taxiJob.TaxiContracts.Where(t => t.Name == name).First();

      var target = PlayerService.GetPlayerByNameOrId(name);
      if (target == null)
      {
        taxiJob.TaxiContracts.Remove(job);
        ChatService.ErrorMessage(player, "Dieser Spieler ist nicht mehr online");
        return;
      }

      job.Driver = player;

      player.TriggerEvent("SERVER:Util_setWaypoint", target.Position.X, target.Position.Y);
      player.SetData<bool>("hasPassager", true);

      ChatService.SendMessage(target, $"!{{02FCFF}}Dein Auftrag wurde von {player.Name} angenommen. Warte an deiner aktuellen Position.");
      ChatService.SendMessage(target, $"!{{02FCFF}}Für die Anfahrt fallen zusätzlich Kosten auf.");
      ChatService.SendMessage(player, $"!{{02FCFF}}Du hast den Auftrag von {name} angenommen. Hole ihn nun ab.");
    }
  }
}