using GTANetworkAPI;
using Microsoft.EntityFrameworkCore;
using ReallifeGamemode.Server.Entities;
using ReallifeGamemode.Server.Models;
using System;
using System.Linq;

/**
* @overview Life of German Reallife - Client Extension (ClientExtension.cs)
* @author hydrant
* @copyright (c) 2008 - 2018 Life of German
*/

namespace ReallifeGamemode.Server.Extensions
{
    public static class ClientExtension
    {
        /// <summary>
        /// Gibt das User-Objekt eines Client's zurück.
        /// Gibt nichts zurück, wenn der Client nicht eingeloggt ist
        /// </summary>
        /// <param name="client">Der Client, dessen User man bekommen möchte</param>
        /// <param name="context">Ein eventuell vorhandener Datenbank-Context, falls man Änderungen in der Datenbank vornehmen will</param>
        /// <returns></returns>
        public static User GetUser(this Client client, DatabaseContext context = null)
        {
            if (!client.IsLoggedIn()) return null;
            if(context == null)
            {
                using (context = new DatabaseContext())
                {
                    return context
                        .Users
                        .Include(u => u.Faction)
                        .Include(u => u.FactionRank)
                        .FirstOrDefault(u => u.Name == client.Name);
                }
            }
            else
            {
                return context
                    .Users
                    .Include(u => u.Faction)
                    .Include(u => u.FactionRank)
                    .FirstOrDefault(u => u.Name == client.Name);
            }
        }

        public static Character GetCharacter(this User user, DatabaseContext context = null)
        {
            if (context == null)
            {
                using (context = new DatabaseContext())
                {
                    return context.Characters.FirstOrDefault(u => u.UserId == user.Id);
                }
            }
            else
            {
                return context.Characters.FirstOrDefault(u => u.UserId == user.Id);
            }
        }

        /// <summary>
        /// Gibt zurück, ob ein Client eingeloggt ist
        /// </summary>
        /// <param name="player">Der Client, dessen Login-Status man bekommen möchte</param>
        /// <returns></returns>
        public static bool IsLoggedIn(this Client player)
        {
            return player.HasData("isLoggedIn") ? player.GetData("isLoggedIn") : false;
        }

        public static Vector3 GetPositionFromPlayer(Client player, float distance, int offset = 0)
        {
            var pos = player.Position;
            var a = player.Heading + offset;
            var rad = a * Math.PI / 180;
            var newpos = new Vector3(pos.X + (distance * Math.Sin(-rad)),
                pos.Y + (distance * Math.Cos(-rad)),
                pos.Z);
            return newpos;
        }

    }
}