using System.Collections.Generic;
using Unity.Netcode;
using System.Linq;
using Unity.Collections;
using UnityEngine;

namespace PashaBibko.PenguinChase.Network
{
    public class GameNetworkClient : NetworkBehaviour
    {
        public static int LocalClientCount { get; set; }
        public static string LocalName { get; set; }

        private static readonly Dictionary<ulong, GameNetworkClient> sConnectedClients = new();
        private static bool sDoneInitialSearch = false;
        
        public static GameNetworkClient LocalClient { get; private set; }

        public static GameNetworkClient[] ConnectedClients => sConnectedClients.Values.ToArray();
        public static int ConnectedClientCount => sConnectedClients.Count;

        private readonly NetworkVariable<FixedString32Bytes> mPlayerName = new
        (
            default,
            NetworkVariableReadPermission.Everyone,
            NetworkVariableWritePermission.Owner
        );

        private readonly NetworkVariable<int> mLocalPlayerCount = new
        (
            0,
            NetworkVariableReadPermission.Everyone,
            NetworkVariableWritePermission.Owner
        );
        
        public int LocalPlayerCount => mLocalPlayerCount.Value;
        public string PlayerName => mPlayerName.Value.ToString();
        
        private void Start()
        {
            // If it is the local instance registers it as such
            if (IsOwner)
            {
                mLocalPlayerCount.Value = LocalClientCount;
                mPlayerName.Value = LocalName;
                
                LocalClient = this;
                
                Debug.Log($"[Game Network Client] has had start called [{LocalName} | {mPlayerName.Value}]");
            }

            // Searches for existing clients if it is the first one to be locally loaded
            if (!sDoneInitialSearch)
            {
                GameNetworkClient[] clients = FindObjectsByType<GameNetworkClient>(FindObjectsSortMode.None);
                foreach (GameNetworkClient client in clients)
                {
                    ulong clientId = client.OwnerClientId;
                    sConnectedClients.Add(clientId, this);
                }
                
                sDoneInitialSearch = true;
            }

            // Else adds it to the global list of clients
            else
            {
                sConnectedClients.Add(OwnerClientId, this);
            }
        }

        public override void OnDestroy() => sConnectedClients.Remove(OwnerClientId);
    }
}