using System.Collections;
using UnityEngine;
using Pooling;
using AppleHills.Core.Settings;
using AppleHills.Core.Interfaces;

namespace Minigames.DivingForPictures
{
    /// <summary>
    /// Spawns bubbles at intervals, randomizing their properties and assigning a random sprite to each.
    /// </summary>
    public class BubbleSpawner : MonoBehaviour, IPausable
    {
        public Bubble bubblePrefab;
        public Sprite[] bubbleSprites; // Assign in inspector
        
        private DivingDeveloperSettings _devSettings;
        private IDivingMinigameSettings _gameSettings;

        private float _timer;
        private float _nextSpawnInterval;
        private BubblePool _bubblePool;
        private Camera _mainCamera; // Cache camera reference
        private bool _isSurfacing = false;
        
        // Pause state
        private bool _isPaused = false;
        
        // Coroutines for pause/resume
        private Coroutine _spawnCoroutine;
        
        // IPausable implementation
        public bool IsPaused => _isPaused;

        void Awake()
        {
            _mainCamera = Camera.main;
            
            // Get developer settings and game settings
            _devSettings = GameManager.GetDeveloperSettings<DivingDeveloperSettings>();
            _gameSettings = GameManager.GetSettingsObject<IDivingMinigameSettings>();
            
            if (_devSettings == null)
            {
                Debug.LogError("[BubbleSpawner] Failed to load developer settings!");
                return;
            }
            
            if (_devSettings.BubbleUseObjectPooling)
            {
                // Create the bubble pool
                GameObject poolGO = new GameObject("BubblePool");
                poolGO.transform.SetParent(transform);
                _bubblePool = poolGO.AddComponent<BubblePool>();
                _bubblePool.initialPoolSize = _devSettings.BubbleInitialPoolSize;
                _bubblePool.maxPoolSize = _devSettings.BubbleMaxPoolSize;
                _bubblePool.Initialize(bubblePrefab);
                
                // Periodically check for pool statistics in debug builds
                #if DEVELOPMENT_BUILD || UNITY_EDITOR
                InvokeRepeating(nameof(LogPoolStats), 5f, 30f);
                #endif
            }
            
            SetNextSpawnInterval();
        }

        void Start()
        {
            // Register with DivingGameManager for pause/resume events
            DivingGameManager gameManager = FindFirstObjectByType<DivingGameManager>();
            if (gameManager != null)
            {
                gameManager.RegisterPausableComponent(this);
            }
            
            // Start spawning if not paused
            StartSpawningCoroutine();
        }
        
        void OnDestroy()
        {
            // Unregister from DivingGameManager
            DivingGameManager gameManager = FindFirstObjectByType<DivingGameManager>();
            if (gameManager != null)
            {
                gameManager.UnregisterPausableComponent(this);
            }
            
            // Clean up any active coroutines
            StopAllCoroutines();
        }
        
        /// <summary>
        /// Pauses the bubble spawner and all bubbles
        /// </summary>
        public void Pause()
        {
            if (_isPaused) return; // Already paused
            
            _isPaused = true;
            
            // Stop spawning coroutine
            if (_spawnCoroutine != null)
            {
                StopCoroutine(_spawnCoroutine);
                _spawnCoroutine = null;
            }
            
            // Pause all active bubbles
            Bubble[] activeBubbles = FindObjectsOfType<Bubble>();
            foreach (var bubble in activeBubbles)
            {
                if (bubble != null)
                {
                    bubble.Pause();
                }
            }
            
            Debug.Log("[BubbleSpawner] Paused");
        }
        
        /// <summary>
        /// Resumes the bubble spawner and all bubbles
        /// </summary>
        public void Resume()
        {
            if (!_isPaused) return; // Already running
            
            _isPaused = false;
            
            // Restart spawning coroutine
            StartSpawningCoroutine();
            
            // Resume all active bubbles
            Bubble[] activeBubbles = FindObjectsOfType<Bubble>();
            foreach (var bubble in activeBubbles)
            {
                if (bubble != null)
                {
                    bubble.Resume();
                }
            }
            
            Debug.Log("[BubbleSpawner] Resumed");
        }
        
        /// <summary>
        /// Starts the bubble spawning coroutine if it's not already running
        /// </summary>
        private void StartSpawningCoroutine()
        {
            if (_spawnCoroutine == null && !_isPaused)
            {
                _spawnCoroutine = StartCoroutine(SpawnBubblesRoutine());
            }
        }

        /// <summary>
        /// Sets the next spawn interval using randomized timing
        /// </summary>
        private void SetNextSpawnInterval()
        {
            if (_devSettings == null) return;
            
            _nextSpawnInterval = GetRandomizedInterval();
            Debug.Log($"[BubbleSpawner] Next spawn interval set to: {_nextSpawnInterval:F2}s");
        }

        /// <summary>
        /// Returns a randomized interval for bubble spawning.
        /// </summary>
        /// <returns>Randomized interval in seconds.</returns>
        float GetRandomizedInterval()
        {
            return _devSettings.BubbleSpawnInterval * Random.Range(0.8f, 1.2f);
        }

        /// <summary>
        /// Spawns a bubble with randomized properties and assigns a random sprite.
        /// </summary>
        void SpawnBubble()
        {
            float x = Random.Range(_devSettings.BubbleSpawnXMin, _devSettings.BubbleSpawnXMax);
            Vector3 spawnPos = new Vector3(x, _devSettings.BubbleSpawnY, 0f);
            
            Bubble bubble;
            if (_devSettings.BubbleUseObjectPooling && _bubblePool != null)
            {
                bubble = _bubblePool.GetBubble();
                bubble.transform.position = spawnPos;
            }
            else
            {
                bubble = Instantiate(bubblePrefab, spawnPos, Quaternion.identity, transform);
            }
            
            // Randomize bubble properties
            float baseSpeed = Random.Range(_devSettings.BubbleSpeedRange.x, _devSettings.BubbleSpeedRange.y);
            
            // Apply surfacing speed reduction if needed
            if (_isSurfacing)
            {
                bubble.speed = baseSpeed * _devSettings.BubbleSurfacingSpeedFactor;
            }
            else
            {
                bubble.speed = baseSpeed;
            }
            
            bubble.wobbleSpeed = Random.Range(_devSettings.BubbleWobbleSpeedRange.x, _devSettings.BubbleWobbleSpeedRange.y);
            
            // Set base scale (initial size) for the bubble
            float baseScale = Random.Range(_devSettings.BubbleScaleRange.x, _devSettings.BubbleScaleRange.y);
            bubble.SetBaseScale(baseScale);
            
            // Assign random sprite to BubbleSprite
            if (bubbleSprites != null && bubbleSprites.Length > 0)
            {
                Sprite randomSprite = bubbleSprites[Random.Range(0, bubbleSprites.Length)];
                bubble.SetBubbleSprite(randomSprite);
            }

            // Random rotation
            bubble.transform.rotation = Quaternion.Euler(0f, 0f, Random.Range(0f, 360f));
            
            // Pass min/max scale for wobble clamping
            bubble.SetWobbleScaleLimits(_devSettings.BubbleWobbleMinScale, _devSettings.BubbleWobbleMaxScale);
            
            // If the game is already paused, pause this bubble immediately
            if (_isPaused)
            {
                bubble.Pause();
            }
        }

        /// <summary>
        /// Start surfacing mode - slow down all bubbles
        /// </summary>
        public void StartSurfacing()
        {
            if (_isSurfacing) return; // Already surfacing
            
            _isSurfacing = true;
            
            // Slow down all existing bubbles
            Bubble[] activeBubbles = FindObjectsByType<Bubble>(FindObjectsSortMode.None);
            foreach (Bubble bubble in activeBubbles)
            {
                bubble.speed *= _devSettings.BubbleSurfacingSpeedFactor;
            }
            
            Debug.Log($"[BubbleSpawner] Started surfacing mode. Bubbles slowed to {_devSettings.BubbleSurfacingSpeedFactor * 100}% speed.");
        }

        /// <summary>
        /// Logs the current pool statistics for debugging
        /// </summary>
        private void LogPoolStats()
        {
            if (_bubblePool != null)
            {
                _bubblePool.LogPoolStats();
            }
        }

        /// <summary>
        /// Coroutine that handles the bubble spawning logic
        /// </summary>
        private IEnumerator SpawnBubblesRoutine()
        {
            Debug.Log("[BubbleSpawner] Started bubble spawning coroutine");
            
            while (enabled && gameObject.activeInHierarchy && !_isPaused)
            {
                SpawnBubble();
                SetNextSpawnInterval(); // Set interval for next spawn
                yield return new WaitForSeconds(_nextSpawnInterval);
            }
            
            _spawnCoroutine = null;
            
            Debug.Log("[BubbleSpawner] Bubble spawning coroutine ended");
        }
    }
}