using CoreLibrary.Joueurs;
using System.Runtime.Serialization.Json;
using System.Text;
using System.Xml;

namespace CoreLibrary.Persistance
{
    public class PersistanceJSON : IPersistance
    {

        public T[] Charger<T>()
        {
            string fichier = $"{typeof(T).Name}.json";
            string ancienDossier = Directory.GetCurrentDirectory();

            Directory.SetCurrentDirectory(Path.Combine(ancienDossier, "../../../../"));
            Console.WriteLine(Directory.GetCurrentDirectory());
            if(!Directory.Exists("Fichiers"))
            {
                Directory.SetCurrentDirectory(ancienDossier);
                return [];
            }
            else
            {
                Directory.SetCurrentDirectory(Path.Combine(Directory.GetCurrentDirectory(), "Fichiers"));
            }

            if (!File.Exists(fichier))
            {
                Directory.SetCurrentDirectory(ancienDossier);
                return [];
            }
;

            DataContractJsonSerializer jsonSerializer = new DataContractJsonSerializer(typeof(IEnumerable<T>));
            T[] elements;

            using (FileStream s = File.OpenRead(fichier))
            {
                elements = jsonSerializer.ReadObject(s) as T[];
            }

            Directory.SetCurrentDirectory(ancienDossier);
            return elements;
        }

        public void Enregistrer<T>(T[] elements)
        {
            string fichier = $"{typeof(T).Name}.json";
            string ancienDossier = Directory.GetCurrentDirectory();

            Directory.SetCurrentDirectory(Path.Combine(ancienDossier, "../../../../"));

            if (!Directory.Exists("Fichiers"))
            {
                Directory.CreateDirectory("Fichiers");
            }

            Directory.SetCurrentDirectory(Path.Combine(Directory.GetCurrentDirectory(), "Fichiers"));

            DataContractJsonSerializer jsonSerializer = new DataContractJsonSerializer(typeof(IEnumerable<T>));

            using(FileStream s = File.Create(fichier))
            {
                using(XmlDictionaryWriter writer = JsonReaderWriterFactory.CreateJsonWriter(
                                        s,
                                        Encoding.UTF8,
                                        false,
                                        true))
                {
                    jsonSerializer.WriteObject(writer, elements);
                }
            }

            Directory.SetCurrentDirectory(ancienDossier);
        }
    }
}