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)

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

        private void Start()
        {
            if (IsServer)
            {
                InitializePlatforms();
                StartCoroutine(DelayedServerSetup());

            }
        }
        #region DistancePlatform
        public List<Platform> platforms; // Assign all platforms in the Inspector
        private List<Platform> activePlatforms = new List<Platform>(); // Stores only active platforms
        private Dictionary<string, float> platformDistances = new Dictionary<string, float>(); // Stores distances
        private List<float> sortedUniqueDistances = new List<float>(); // Stores unique sorted distances
        public List<Transform> platformTransforms; // Assign platform GameObjects here
        public Transform centerPoint; // Center position where the shape will form
        public float shapeRadius = 5f;

       

        void Starter()
        {
            UpdateActivePlatforms();
            PrecomputeDistances();
        }

        public void ArrangePlatforms()
        {
            // Get only active platforms
            List<Transform> activePlatforms = platformTransforms.Where(p => p.gameObject.activeSelf).ToList();
            int count = activePlatforms.Count;

            if (count < 3)
            {
                Debug.LogWarning("Not enough platforms to form a shape!");
                return;
            }

            // Arrange them in a regular polygon shape
            PlacePlatformsInShape(activePlatforms, count);
        }

        private void PlacePlatformsInShape(List<Transform> platforms, int count)
        {
            float angleStep = 360f / count; // Equal angles for each platform
            float startAngle = 90f; // Start from the top (adjust if needed)

            for (int i = 0; i < count; i++)
            {
                float angle = startAngle + (i * angleStep);
                float radians = angle * Mathf.Deg2Rad;

                // Calculate new position using circle formula
                Vector3 newPosition = new Vector3(
                    centerPoint.position.x + shapeRadius * Mathf.Cos(radians),
                    centerPoint.position.y,
                    centerPoint.position.z + shapeRadius * Mathf.Sin(radians)
                );

                // Move platform to its new position
                platforms[i].position = newPosition;
            }
        }

        public void UpdateActivePlatforms()
        {
            // Refresh the active platforms list
            activePlatforms = platforms.Where(p => p.gameObject.activeSelf).ToList();
        }

        private void PrecomputeDistances()
        {
            platformDistances.Clear();
            sortedUniqueDistances.Clear();

            if (activePlatforms.Count < 2)
            {
                Debug.LogWarning("Not enough active platforms to calculate distances.");
                return;
            }

            HashSet<float> uniqueDistances = new HashSet<float>();

            // Compute and store distances between all active platform pairs
            for (int i = 0; i < activePlatforms.Count; i++)
            {
                for (int j = i + 1; j < activePlatforms.Count; j++)
                {
                    Platform platformA = activePlatforms[i];
                    Platform platformB = activePlatforms[j];

                    float rawDistance = Vector3.Distance(platformA.transform.position, platformB.transform.position);
                    float roundedDistance = Mathf.Round(rawDistance * 100f) / 100f; // Rounds to 2 decimal places

                    uniqueDistances.Add(roundedDistance);

                    string key = GetPlatformKey(platformA, platformB);
                    platformDistances[key] = roundedDistance;
                }
            }

            // Convert unique distances into a sorted list
            sortedUniqueDistances = uniqueDistances.OrderBy(d => d).ToList();

            Debug.Log("Sorted unique distances: " + string.Join(", ", sortedUniqueDistances));
        }

        public float CalculateScore(Platform platformA, Platform platformB)
        {
            if(platformA== null)
            {
                Debug.Log("platformA is null");
            }
            if(platformB == null)
            {
                Debug.Log("platformB is null");
            }
            if (!platformA.gameObject.activeSelf || !platformB.gameObject.activeSelf)
            {
                Debug.Log("One or both selected platforms are not active.");
                return -1;
            }
            Debug.Log("PlatformKey getter");
            string key = GetPlatformKey(platformA, platformB);
            Debug.Log("PlatformKey getter2");
            if (!platformDistances.ContainsKey(key))
            {
                Debug.LogError("Distance for selected platforms not found!");
                return -1;
            }

            float distance = platformDistances[key];
            float scoreMultiplier = GetMultiplier(distance);
            Debug.Log($"Platforms {platformA.name} & {platformB.name} selected. Distance: {distance:F2}, Score Multiplier: {scoreMultiplier}");
            return scoreMultiplier;
        }

        private float GetMultiplier(float distance)
        {
            if (sortedUniqueDistances.Count == 0)
            {
                return 1.0f; // Default if no distances are calculated
            }

            // Find the index of the selected distance in the sorted list
            int index = sortedUniqueDistances.IndexOf(distance);

            // Multiplier starts from 1.0 and increases by 0.1 per step
            return 1.0f + (index * 0.1f);
        }

        private string GetPlatformKey(Platform platformA, Platform platformB)
        {
            return platformA.name + "_" + platformB.name;
        }
        #endregion
        /// <summary>
        /// Initializes platform list and assigns unique IDs.
        /// </summary>
        private void InitializePlatforms()
        {
            m_Platforms = GetComponentsInChildren<Platform>(true).ToList();
            for (int i = 0; i < m_Platforms.Count; i++)
            {
                m_Platforms[i].AssignID(i + 1);  // Assign unique IDs to platforms
            }
        }

        /// <summary>
        /// Delayed server setup to allow other components to initialize.
        /// </summary>
        private IEnumerator DelayedServerSetup()
        {
            yield return new WaitForSeconds(0.5f);
            PlatformSelection();
        }

        /// <summary>
        /// Server-side logic to select and enable platforms based on player count.
        /// </summary>
        private void PlatformSelection()
        {

            int platformsToSpawn = PlayerPrefs.GetInt("NumberOfLobbyPlayers",1) - 1;
            //int platformsToSpawn = 2;

            // Disable all platforms initially
            foreach (var platform in m_Platforms)
            {
                platform.gameObject.SetActive(false);
            }

            // Enable required number of platforms
            for (int i = 0; i < platformsToSpawn; i++)
            {
                Debug.Log(m_Platforms[i].gameObject.name + " is activated");
                m_Platforms[i].gameObject.SetActive(true);
            }

            m_Platforms = m_Platforms.Where(platform => platform.gameObject.activeSelf).ToList();
            int[] platformIDs = m_Platforms.Select(p => p.PlatformID.Value).ToArray();

            // Notify clients to enable corresponding platforms
            ClientEnablePlatformClientRpc(platformIDs);
        }

        /// <summary>
        /// ClientRpc to enable platforms on the client side.
        /// </summary>
        [ClientRpc]
        private void ClientEnablePlatformClientRpc(int[] platformIDs)
        {
            m_Platforms = GetComponentsInChildren<Platform>(true).ToList();
            // Disable all platforms initially
            foreach (var platform in m_Platforms)
            {
                platform.gameObject.SetActive(false);
            }

            // Enable specified platforms
            foreach (int id in platformIDs)
            {
                var platformToEnable = m_Platforms.FirstOrDefault(p => p.PlatformID.Value == id);
                if (platformToEnable != null)
                {
                    platformToEnable.gameObject.SetActive(true);
                }
            }

            m_Platforms = m_Platforms.Where(platform => platform.gameObject.activeSelf).ToList();

            Starter();

        }

        /// <summary>
        /// Finds the nearest unoccupied platform to a given position.
        /// Server-only method.
        /// </summary>
        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();
        }

        /// <summary>
        /// Checks if all platforms are occupied.
        /// </summary>
        public bool AreAllPlatformsOccupied()
        {
            return m_Platforms.All(platform => platform.IsOccupied);
        }

        /// <summary>
        /// Gets the platform occupied by a specific player.
        /// </summary>
        public Platform GetPlatformOccupiedByPlayer(ServerCharacter player)
        {
            return m_Platforms.FirstOrDefault(p => p.IsOccupied && p.GetOccupierId() == player.OwnerClientId);
        }

        /// <summary>
        /// Checks if a platform is occupied.
        /// </summary>
        public bool IsPlatformOccupied(Platform platform)
        {
            return platform.IsOccupied;
        }

        /// <summary>
        /// Gets the position of a platform by its ID.
        /// </summary>
        public Vector3 GetPlatformPosition(int platformId)
        {
            var platform = m_Platforms.FirstOrDefault(p => p.PlatformID.Value == platformId);
            return platform ? platform.transform.position : Vector3.zero;
        }

        /// <summary>
        /// Gets a platform by its ID.
        /// </summary>
        public Platform GetPlatformById(int platformId)
        {
            return m_Platforms.FirstOrDefault(p => p.PlatformID.Value == platformId);
        }
    }
}


//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
//            PlatformSelection();  // 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}");
//        }
//        private void PlatformSelection()
//        {
//            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();
//            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);
//        }
//    }
//}