using GTANetworkAPI;
using ReallifeGamemode.Server.Entities;
using ReallifeGamemode.Server.Extensions;
using ReallifeGamemode.Server.Job;
using ReallifeGamemode.Server.Models;
using ReallifeGamemode.Server.Services;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Reflection;
using System.Text;

namespace ReallifeGamemode.Server.Managers
{
    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(Client player)
        {
            using(var dbContext = new DatabaseContext())
            {
                User u = player.GetUser(dbContext);

                if (u == null) return;

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

                u.JobId = null;

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

                dbContext.SaveChanges();
            }
        }

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

                if (u == null) return;

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

                JobBase job = JobManager.GetJob(jobId);

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

                player.SendChatMessage($"~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(Client player)
        {
            User u = player.GetUser();

            if (u.JobId == null) return;

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

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

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

            if (u.JobId == null) return;

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

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

            job.StartJob(player);
        }
    }
}