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

namespace Unity.Multiplayer.Samples.BossRoom
{
    public class PlatformManager : MonoBehaviour
    {
        public static PlatformManager Instance = null;
        private List<Platform> m_Platforms;

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

        private void Start()
        {
            m_Platforms = GetComponentsInChildren<Platform>().ToList();
            // Assign unique IDs to each platform
            for (int i = 0; i < m_Platforms.Count; i++)
            {
                m_Platforms[i].AssignID(i + 1); // IDs start from 1
            }

            Debug.Log("All platforms have been assigned unique IDs.");
        }

        /// <summary>
        /// Finds an unoccupied platform and assigns the player to it.
        /// </summary>
        /// <param name="player">The ServerCharacter to assign.</param>
        /// <returns>True if successfully assigned, false otherwise.</returns>
        public bool AssignPlayerToPlatform(ServerCharacter player)
        {
            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;
        }

        /// <summary>
        /// Finds the platform currently occupied by the given player.
        /// </summary>
        /// <param name="player">The ServerCharacter to search for.</param>
        /// <returns>The platform occupied by the player, or null if not found.</returns>
        public Platform GetPlatformOccupiedByPlayer(ServerCharacter player)
        {
            return m_Platforms.FirstOrDefault(p => p.Occupier == player);
        }

        /// <summary>
        /// Checks if a specific platform is occupied.
        /// </summary>
        /// <param name="platform">The platform to check.</param>
        /// <returns>True if the platform is occupied, false otherwise.</returns>
        public bool IsPlatformOccupied(Platform platform)
        {
            return platform.IsOccupied;
        }
        
        public Vector3 GetPlatformPosition(int platformId)
        {
            var platform = m_Platforms.FirstOrDefault(p => p.PlatformID == platformId);
            return platform ? platform.transform.position : Vector3.zero;
        }

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

        
    }
}