using System.Collections;
using System.Collections.Generic;
using System.Linq;
using Unity.BossRoom.Gameplay.GameplayObjects.Character;
using Unity.Netcode;
using UnityEngine;

namespace Unity.Multiplayer.Samples.BossRoom
{
    public class PlatformManager : NetworkBehaviour
    {
        public static PlatformManager Instance;
        public List<Platform> m_Platforms;
        public int numberOfPlayers = 2;   // Number of players (n)
        public float planeRadius = 4f;  // Radius of the circular plane

        private void Awake()
        {
            if (Instance != null && Instance != this)
            {
                Destroy(gameObject);
            }
            else
            {
                Instance = this;
            }
        }

        private void Start()
        {
            if (IsServer)
            {
                m_Platforms = GetComponentsInChildren<Platform>(true).ToList();
                for (int i = 0; i < m_Platforms.Count; i++)
                {
                    m_Platforms[i].AssignID(i + 1);  // Initialize platforms with unique IDs
                }
                StartCoroutine(DelayedServerSetup());
            }
            else
            {
                StartCoroutine(DelayedClientSetup());  // Delay to give time to load
            }
        }

        /// <summary>
        /// Coroutine to delay server-side setup.
        /// </summary>
        private IEnumerator DelayedServerSetup()
        {
            yield return new WaitForSeconds(0.5f);  // Delay for 0.5 seconds
            PlatformSelectionServerRpc();  // Call ServerRpc after delay
        }

        /// <summary>
        /// Coroutine to delay client-side setup.
        /// </summary>
        private IEnumerator DelayedClientSetup()
        {
            yield return new WaitForSeconds(0.5f);
            m_Platforms = GetComponentsInChildren<Platform>(true).ToList();  // Populate client platform list
            Debug.Log($"Client platform list initialized. Platform count: {m_Platforms.Count}");
        }

        [ServerRpc(RequireOwnership = false)]
        private void PlatformSelectionServerRpc()
        {
            int platformsToSpawn = PlayerPrefs.GetInt("NumberOfLobbyPlayers") - 1;

            m_Platforms.ForEach(platform => platform.gameObject.SetActive(false));
            Debug.Log("Disabled all platforms on the server.");

            if (platformsToSpawn > 0)
            {
                for (int i = 0; i < platformsToSpawn; i++)
                {
                    m_Platforms[i].gameObject.SetActive(true);
                    Debug.Log($"Enabled platform with ID {m_Platforms[i].PlatformID.Value} on server.");
                }
            }
            m_Platforms = m_Platforms.Where(platform => platform.gameObject.activeSelf).ToList();
            //float angleIncrement = 360f / platformsToSpawn;
            //for (int i = 0; i < platformsToSpawn; i++)
            //{
            //    m_Platforms[i].transform.position = new Vector3(
            //        Mathf.Cos(i * angleIncrement * Mathf.Deg2Rad) * planeRadius,
            //        0f,
            //        Mathf.Sin(i * angleIncrement * Mathf.Deg2Rad) * planeRadius
            //    );
            //}

            int[] platformIDs = m_Platforms.Select(p => p.PlatformID.Value).ToArray();
            ClientEnablePlatformClientRpc(platformIDs);
        }

        [ClientRpc]
        private void ClientEnablePlatformClientRpc(int[] platformIDs)
        {
            m_Platforms = GetComponentsInChildren<Platform>(true).ToList();  // Ensure the platform list is refreshed
            Debug.Log($"Client received platform IDs: {string.Join(",", platformIDs)}");
            Debug.Log($"Client platform list count: {m_Platforms.Count}");

            foreach (var platform in m_Platforms)
            {
                platform.gameObject.SetActive(false);
                Debug.Log($"Disabled platform with ID: {platform.PlatformID.Value}");
            }

            foreach (int id in platformIDs)
            {
                var platformToEnable = m_Platforms.FirstOrDefault(p => p.PlatformID.Value == id);
                if (platformToEnable != null)
                {
                    platformToEnable.gameObject.SetActive(true);
                    Debug.Log($"Enabled platform with ID: {id}");
                }
                else
                {
                    Debug.LogError($"Platform with ID {id} not found on client.");
                }
            }
            m_Platforms = m_Platforms.Where(platform => platform.gameObject.activeSelf).ToList();

        }
        public Platform FindNearestUnoccupiedPlatform(Vector3 position)
        {
            if (!IsServer)
            {
                Debug.LogError("FindNearestUnoccupiedPlatform should only be called on the server.");
                return null;
            }

            return m_Platforms
                .Where(platform => !platform.IsOccupied)
                .OrderBy(platform => Vector3.Distance(position, platform.transform.position))
                .FirstOrDefault();
        }

        public bool AreAllPlatformsOccupied()
        {
            return m_Platforms.All(platform => platform.IsOccupied);
        }

        public bool AssignPlayerToPlatform(ServerCharacter player)
        {
            if (!IsServer)
            {
                Debug.LogError("AssignPlayerToPlatform should only be called on the server.");
                return false;
            }

            var platform = m_Platforms.FirstOrDefault(p => !p.IsOccupied);
            if (platform != null)
            {
                platform.Occupy(player);
                return true;
            }

            Debug.LogWarning($"No unoccupied platforms available for {player.name}.");
            return false;
        }

        public Platform GetPlatformOccupiedByPlayer(ServerCharacter player)
        {
            return m_Platforms.FirstOrDefault(p => p.IsOccupied && p.GetOccupierId() == player.OwnerClientId);
        }

        public bool IsPlatformOccupied(Platform platform)
        {
            return platform.IsOccupied;
        }

        public Vector3 GetPlatformPosition(int platformId)
        {
            var platform = m_Platforms.FirstOrDefault(p => p.PlatformID.Value == platformId);
            return platform ? platform.transform.position : Vector3.zero;
        }

        public Platform GetPlatformById(int platformId)
        {
            return m_Platforms.FirstOrDefault(p => p.PlatformID.Value == platformId);
        }
    }
}