using System;
using System.Collections;
using System.Collections.Generic;
using UnityEngine;
using UnityEngine.InputSystem;
using RPGCreationKit;
using RPGCreationKit.CellsSystem;
using RPGCreationKit.DialogueSystem;
using UnityEngine.UI;
using UnityEngine.EventSystems;
using RPGCreationKit.AI;
using XNode;

namespace RPGCreationKit.Player
{
	public class PlayerInteractor : PlayerMovements, IDialoguable
	{
		//[SerializeField] private PlayerInteractorUI interactorUI;
		[SerializeField] private LayerMask rayMask;
		[SerializeField] private Transform camT;

		public bool isInConversation;
		public bool isInteracting;
		public bool isReadingBook;
		public bool isLooting;
		public bool isCrafting;

		Ray ray;
		RaycastHit rayHit;
		[SerializeField] private Transform rayStartPoint;


		// Dialogue
		public IDialoguable speakingTo;
		[SerializeField] private float dialogueDistance = 2.5f; // The distance of which a dialogue is possible

		// Interact object
		public InteractiveObject_Behaviour interactiveObject;
		[SerializeField] private float interactiveObjectDistance = 2.5f; // The distance of which a dialogue is possible


		// Looting
		[HideInInspector] public LootingPoint objLooting; // If so, track the InteractiveObject
		[SerializeField] private float lootingPointDistance = 2.5f;   // The distance to interact with an InteractiveObject

		// Crafting
		[HideInInspector] public CraftingPoint objCrafting; // If so, track the InteractiveObject
		[SerializeField] private float CraftingDistance = 2.5f;

		// Items
		[SerializeField] private float itemDistance = 2.5f;
		[SerializeField] private float doorDistance = 2.5f;
		private bool cameraLookNPC;


		Rigidbody itemRigidbody;
		private ItemInWorld dragItemScript;
		Vector3 dragDirection;
		[SerializeField] private float dragDistance = 2.5f;
		public float dragForce = 50f;
		public bool dragKeyBeingHeld;
		public bool isDragging;

		string cmdStr;

		public void INPUT_DragKey(InputAction.CallbackContext value)
		{
			if (value.started)
				dragKeyBeingHeld = true;
			else if (value.canceled)
				dragKeyBeingHeld = false;
		}

		public override void Start()
		{
			base.Start();
		}

		public override void Update()
		{
			base.Update();

			// DialogueFix
			if (isInConversation && !RckInput.isUsingGamepad && uiManager.allPlayerQuestions.Count > 0 && uiManager.playerQuestionsContainer.gameObject.activeInHierarchy)
				Cursor.lockState = CursorLockMode.None;

			if (isInCutsceneMode || !isLoaded || !IsControlledByPlayer())
			{
				if (uiManager.Interact_text.isActiveAndEnabled)
					uiManager.Interact_text.gameObject.SetActive(false);
				return;
			}

			if (uiManager.Interact_text.isActiveAndEnabled)
				uiManager.Interact_text.gameObject.SetActive(false);

			cmdStr = RckInput.isUsingGamepad ? "(A)" : "E)";

			Raycast();
		}

		public override void FixedUpdate()
		{
			base.FixedUpdate();

			ManageDraggable();
		}


		public void Raycast()
		{
			ray = new Ray(camT.position, camT.forward);
			
			if(Physics.Raycast(ray, out rayHit, RCKSettings.INTERACTOR_RAYCAST_MAXDISTANCE, rayMask))
			{
				if (!RckPlayer.instance.iscrouching) {
					if (rayHit.distance <= dialogueDistance) {
						CheckForIDialoguable();
					}
				} else if (rayHit.distance <= lootingPointDistance)	{
					CheckForLootingPoint(true);
				}

				if (rayHit.distance <= itemDistance)
					CheckForItemsInWorld();

				if (rayHit.distance <= RCKSettings.PLAYER_DISTANCE_TO_DISPLAY_ENEMY_BAR) {
					CheckForIDamageable();
				} else {
				//	UnityEngine.Utility.WaitForSeconds(3.0f); @ Schaken -- Find another way to do this.
					uiManager.enemyHealthContainer.SetActive(false);
				}

				if (rayHit.distance <= interactiveObjectDistance)
					CheckForInteractiveObjects();

				if (rayHit.distance <= lootingPointDistance)
					CheckForLootingPoint(false);

				if (rayHit.distance <= doorDistance)
					CheckForDoors();

				if (rayHit.distance <= dragDistance)
					CheckForIDraggable();
					
				if (rayHit.distance <= CraftingDistance)
					CheckForCrafting();
			}
		}

		private void CheckForIDialoguable()
		{
			IDialoguable dialoguable = rayHit.transform.gameObject.GetComponent<IDialoguable>();

			if(dialoguable != null && dialoguable.CanDialogue() && !isInConversation)
			{
				// Set the UI
				uiManager.Interact_text.gameObject.SetActive(true);
				uiManager.Interact_text.text = cmdStr+" Speak: " + dialoguable.GetDialoguableName();


				if (input.actions.FindAction("Interact").triggered)
				{
					StartDialogue(dialoguable);
				}
			}
		}

		private void CheckForItemsInWorld()
		{
			if(rayHit.transform.CompareTag("RPG Creation Kit/ItemInWorld"))
			{
				// When we find one, we save this reference
				ItemInWorld obj = rayHit.transform.gameObject.GetComponent<ItemInWorld>();

				if (obj == null)
					return;

				if (obj.hasBeenTaken)
					return;

				uiManager.Interact_text.gameObject.SetActive(true);

				if (obj.Item is BookItem)
				{
					uiManager.Interact_text.text = cmdStr+" Read: " + obj.Item.ItemName;
				}
				else
				{
					string action = obj.Metadata.IsOwnedByNPC ? " Steal: " : " Take: ";
					if (obj.Amount == 1)
						uiManager.Interact_text.text = cmdStr + action + obj.Item.ItemName;
					else
						// E) Take item.name (Number)
						uiManager.Interact_text.text = cmdStr + action + obj.Item.ItemName + " (" + obj.Amount + ")";
				}

				if (input.actions.FindAction("Interact").triggered)
				{
					if (obj.Item is BookItem) {
						// ReadBook
						if(!RckPlayer.instance.isReadingBook) {
							BookReaderManager.instance.ReadBook((BookItem)obj.Item, true, obj);
						}
					} else {
						TakeItemInWorld(obj);
					}
				}
			}
		}

		public void TakeItemInWorld(ItemInWorld _item)
		{
			_item.hasBeenTaken = true;
			
			inventory.AddItem(_item.Item, _item.Metadata, _item.Amount);


			// We trigger activators
			if (_item.events.EvaluateConditions())
			{
				QuestManager.instance.QuestDealerActivator(_item.events.questDealers);
				QuestManager.instance.QuestUpdaterActivator(_item.events.questUpdaters);
				ConsequenceManager.instance.ConsequencesActivator(gameObject, _item.events.consequences);
			}

			// Play sound
			if (_item.Item.sOnPickUp)
				GameAudioManager.instance.PlayOneShot(AudioSources.GeneralSounds, _item.Item.sOnPickUp);

			// If It's NOT created item, save the state
			if(!_item.isCreatedItem)
				_item.SaveOnFile(true);
			else
			{
				// Otherwise, remove it from the dictionary
				_item.DeleteCreatedRecord();
			}

			// Steal
			if (_item.Metadata.IsOwnedByNPC)
			{
				// Aggro nearby NPC's since you stole something
				// TODO: Optomize this, Just going over everything could become an issue when theres hundreds of NPC's
				// maybe use factions? getowner() - getfaction() - ifisinfaction,then... ?
				foreach (var activeCell in CellInformation.activeCells)
				{
					foreach (var AI in activeCell.Value.aiInWorld)
					{
						// if is in faction...
						AI.Value.TryEngageWithPlayer();
					}
				}
			}

			Destroy(_item.gameObject);
		}

		private void CheckForIDamageable()
		{
			IDamageable damageable = rayHit.transform.gameObject.GetComponent<IDamageable>();

			if (damageable != null && damageable.IsAlive() && !damageable.IsUnconscious())
			{
				if (damageable.ShouldDisplayHealthIfHostile() && (damageable.IsHostile() || damageable.IsHostileAgainstPC()))
				{
					uiManager.enemyHealthSlider.maxValue = damageable.GetMaxHP();
					uiManager.enemyHealthSlider.value = damageable.GetCurrentHP();
					uiManager.enemyName.text = damageable.GetEntityName();
					uiManager.enemyHealthContainer.SetActive(true);
				}
				else
					uiManager.enemyHealthContainer.SetActive(false);
			}
			else
				uiManager.enemyHealthContainer.SetActive(false);
		}

		/// <summary>
		/// Check with Rays if we're near InteractiveObjects
		/// </summary>
		private void CheckForInteractiveObjects()
		{
			// When we find one, we save this reference
			InteractiveObject_Behaviour obj = rayHit.transform.gameObject.GetComponent<InteractiveObject_Behaviour>();

			if (obj == null ||obj.interactiveObj == null)
				return;

			// If the NPC is interactable (not dead and not hostile and we're not yet in a conversation with him)
			if (obj.canInteract && !isInteracting)
			{

				// Set the UI
				uiManager.Interact_text.gameObject.SetActive(true);
				uiManager.Interact_text.text = cmdStr+" " + obj.interactiveObj.Action + ": " + obj.interactiveObj.Name;

				// Check for Key to speak with him
				if (input.actions.FindAction("Interact").triggered)
					InteractWithObject(obj);
			}
			else
				uiManager.Interact_text.gameObject.SetActive(false);
		}

		/// <summary>
		/// Called when we select to interact with an Object
		/// </summary>
		private void InteractWithObject(InteractiveObject_Behaviour obj)
		{
			input.SwitchCurrentActionMap("InteractUI");
			// Flag that we're interacting
			isInteracting = true;


			// If we can choose between multiple options
			if (obj.interactiveObj.InteractiveOptions.Length > 1)
			{
				// Disable player controls
				RckPlayer.instance.EnableDisableControls(false);

				// Set UI
				uiManager.interactiveObjectUIContainer.SetActive(true);

				uiManager.interactiveObjectName.text = obj.interactiveObj.Name;
				uiManager.interactiveObjectDescription.text = obj.interactiveObj.Description;

				// Instantiate InteractiveOptionsUI
				if (obj.interactiveObj.InteractiveOptions.Length > 0)
				{
					for (int i = 0; i < obj.interactiveObj.InteractiveOptions.Length; i++)
					{
						GameObject newOption = Instantiate(uiManager.interactiveOptionUIPrefab, uiManager.interactiveOptionContent);
						newOption.GetComponent<InteractiveObjectUI>().Init(obj, obj.interactiveObj, obj.interactiveObj.InteractiveOptions[i]);

						if (i == 0 && RckInput.isUsingGamepad)
							newOption.GetComponent<Selectable>().Select();
					}
				}
				// Otherwise if we have only one option
			}
			else if (obj.interactiveObj.InteractiveOptions.Length == 1)
			{
				// We just trigger the events
				DoInteractiveAction(obj, obj.interactiveObj.InteractiveOptions[0]);
			}
		}

		/// <summary>
		/// Called by InteractiveObject UI Buttons, perform interactive actions
		/// </summary>
		/// <param name="obj"></param>
		/// <param name="option"></param>
		public void DoInteractiveAction(InteractiveObject_Behaviour obj, InteractiveOptions option)
		{
			// We initialize the array element
			int arrayElement = -1;

			// We find at what index are the Events of the selected 'option'
			for (int i = 0; i < obj.interactiveObj.InteractiveOptions.Length; i++)
			{
				if (option == obj.interactiveObj.InteractiveOptions[i])
				{
					// We save it
					arrayElement = i;
					break;
				}
			}

			// We trigger activators
			if (obj.events[arrayElement].EvaluateConditions())
			{
				QuestManager.instance.QuestDealerActivator(obj.events[arrayElement].questDealers);
				QuestManager.instance.QuestUpdaterActivator(obj.events[arrayElement].questUpdaters);
				ConsequenceManager.instance.ConsequencesActivator(gameObject, obj.events[arrayElement].consequences);
			}

			// Trigger the Result Script
			if (!string.IsNullOrEmpty(obj.resultScripts[arrayElement]))
				RCKFunctions.ExecuteScript(obj.resultScripts[arrayElement]);

			// Enable player controls
			EnableDisableControls(true);

			uiManager.interactiveObjectUIContainer.SetActive(false);

			// Remove all the previous instantiated options
			foreach (Transform t in uiManager.interactiveOptionContent)
				Destroy(t.gameObject);


			StartCoroutine(StopInteractingFixed());
			input.SwitchCurrentActionMap("Player");

		}

		IEnumerator StopInteractingFixed() {
			yield return new WaitForEndOfFrame();
			isInteracting = false;
		}

		private void CheckForLootingPoint(bool isPickPocket) {
			if (isPickPocket == false) {
				if (rayHit.transform.CompareTag("RPG Creation Kit/Looting Point"))
				{
					// When we find one, we save this reference
					LootingPoint obj = rayHit.collider.transform.gameObject.GetComponent<LootingPoint>();

					// Set the UI
					if (!isLooting) {
						uiManager.Interact_text.gameObject.SetActive(true);
						if (obj.inventory.Items.Count > 0) {
							if (obj.locked) {
								uiManager.Interact_text.text = cmdStr+" Search: " + obj.pointName + " (Locked)";
							} else {
								uiManager.Interact_text.text = cmdStr+" Search: " + obj.pointName;
							}
						} else {
							if (obj.locked) {
								uiManager.Interact_text.text = cmdStr+" Search: " + obj.pointName + " (Empty) (Locked)";
							} else {
								uiManager.Interact_text.text = cmdStr+" Search: " + obj.pointName + " (Empty)";
							}
						}
					}

					// Check for Key to speak with him
					if (input.actions.FindAction("Interact").triggered) {
						if (obj.locked) {
							if (obj.key != null && Inventory.PlayerInventory.GetItemCount(obj.key.ItemID) > 0) {

								if (obj.onLocked != null) {
									GameAudioManager.instance.PlayOneShot(AudioSources.PlayerFPS, obj.onLocked);
								} else {
									Debug.Log("SCHAKEN - You need a UNLOCKING sound!!!");
								}
								StartCoroutine(UnlockThenOpen(obj)); // Added a delay for locking sound and realism
							} else {
								// We don't have the key, alert message the player
								AlertMessage.instance.InitAlertMessage("You don't have the key", 3f);

								if (obj.onUnlocked != null) {
									GameAudioManager.instance.PlayOneShot(AudioSources.PlayerFPS, obj.onUnlocked);
								}
							}
						} else {
							OpenLootPoint(obj);
						}
					}
				}	
			} else {
				// When we find one, we save this reference
				RckAI obj = rayHit.transform.gameObject.GetComponent<RckAI>();

				if (obj != null) {
					
					// Set the UI
					if (!isLooting) {
						
						uiManager.Interact_text.gameObject.SetActive(true);
						uiManager.Interact_text.text = cmdStr + " Pickpocket: " + obj.GetEntityName();
					}

					// Check for Key to speak with him
					if (input.actions.FindAction("Interact").triggered) {
						OpenLootPoint(obj);
					}
				}
				// Check for Key to speak with him
			}		
		}

		IEnumerator UnlockThenOpen(LootingPoint obj) {
			yield return new WaitForSeconds(0.7f);
			obj.UnlockContainer();
			OpenLootPoint(obj);
		}

		private void OpenLootPoint(RckAI _AI) {
			isLooting = true;
			LootingInventoryUI.instance.OpenLootingPanel(_AI.gameObject.GetComponentInChildren<LootingPoint>(), true, true, _AI);
		}

		private void OpenLootPoint(LootingPoint _point) {
			isLooting = true;
			objLooting = _point;

			if (_point.openSound)
				GameAudioManager.instance.PlayOneShot(AudioSources.GeneralSounds, _point.openSound);

			if (_point.anim != null) {
				_point.OpenCloseContainer();
				StartCoroutine(DelayOpenLootingPoint(_point));
			} else {
				LootingInventoryUI.instance.OpenLootingPanel(_point);
			}
		}

		IEnumerator DelayOpenLootingPoint(LootingPoint _point) {
			yield return new WaitForSeconds(0.7f);
			LootingInventoryUI.instance.OpenLootingPanel(_point);
		}

		private void CheckForDoors()
		{
			if(rayHit.transform.CompareTag("RPG Creation Kit/Door") || (rayHit.transform.CompareTag("RPG Creation Kit/Cave")))
			{
				// When we find one, we save this reference
				Door obj = rayHit.transform.gameObject.GetComponent<Door>();

				// Set the UI
				uiManager.Interact_text.gameObject.SetActive(true);

				if (obj.teleports && rayHit.transform.CompareTag("RPG Creation Kit/Door")) {
					uiManager.Interact_text.text = cmdStr+" Door to: " + obj.toCell.cellName;
				} else if (obj.teleports && rayHit.transform.CompareTag("RPG Creation Kit/Cave")) {
					uiManager.Interact_text.text = cmdStr+" Enter: " + obj.toCell.cellName;
				} else {
					if (obj.isOpened) {
						uiManager.Interact_text.text = cmdStr+" Close: Door";
					} else {
						if (obj.locked) {
							uiManager.Interact_text.text = cmdStr+" Open: Door (Locked)";
						} else {
							uiManager.Interact_text.text = cmdStr+" Open: Door";
						}
					}
				}

				// Check for opening door
				if (input.actions.FindAction("Interact").triggered && !WorldManager.instance.isLoading) {
					if (obj.locked) {
						// We have the key
						if (obj.key != null && Inventory.PlayerInventory.GetItemCount(obj.key.ItemID) > 0) {
							if (obj.onDoorOpenLocked != null) {
								GameAudioManager.instance.PlayOneShot(AudioSources.PlayerFPS, obj.onDoorOpenUnlocked);
							}

							StartCoroutine(UnlockDoorThenOpen(obj));// Just delaying for realism and sounds
							//obj.UnlockDoor();
							//OpenDoor(obj);
						} else {
							// We don't have the key, alert message the player
							AlertMessage.instance.InitAlertMessage("You don't have the key to open this door", 3f);

							if (obj.onDoorOpenLocked != null) {
								GameAudioManager.instance.PlayOneShot(AudioSources.PlayerFPS, obj.onDoorOpenLocked);
							}
						}
					} else {
						if (obj.onDoorOpen != null) {
							GameAudioManager.instance.PlayOneShot(AudioSources.PlayerFPS, obj.onDoorOpen);
						}

						OpenDoor(obj);
					}
				}
			}  
		}

		IEnumerator UnlockDoorThenOpen(Door obj) {
			yield return new WaitForSeconds(0.7f);
			obj.UnlockDoor();
			OpenDoor(obj);
		}

		private void OpenDoor(Door obj) {
			if (obj.onDoorOpen) {
				GameAudioManager.instance.PlayOneShot(AudioSources.GeneralSounds, obj.onDoorOpen);
			} else {
				Debug.Log("SCHAKEN - Add sounds here!");
			}

			if (obj.teleports) {
				FreezeAndDisableControl();
				WorldManager.instance.LoadCell(obj.toCell, UnityEngine.Random.Range(int.MinValue, int.MaxValue), false, obj, null, true);
			} else {
				// Open door by rotating pivot/playing animation
				obj.OpenCloseDoor();
			}
		}

		private void CheckForCrafting() {
			if (rayHit.transform.CompareTag("RPG Creation Kit/Crafting")) {
				// When we find one, we save this reference
				CraftingPoint obj = rayHit.collider.transform.gameObject.GetComponent<CraftingPoint>();

				// Set the UI
				if (!isCrafting) {
					uiManager.Interact_text.gameObject.SetActive(true);
					uiManager.Interact_text.text = cmdStr+" Use: " + obj.pointName;
				}

				// Check for Key to speak with him
				if (input.actions.FindAction("Interact").triggered) {
					GameAudioManager.instance.PlayOneShot(AudioSources.PlayerFPS, obj.Using);
					AlchemyManager.instance.OpenAlchemyPanel();
				}
			}
		}

		public void StartDialogue(IDialoguable dialoguable) {
			speakingTo = dialoguable;
			dialoguable.SetSpeakerIndex(0); // Always 0 here because the player is talking to someone
			dialoguable.OnDialogueStarts(this.gameObject);			
			DialogueLogic(dialoguable.GetCurrentDialogueGraph());
		}

		void DialogueLogic(DialogueGraph dialogue) {
			if (dialogue != null) {
				StartCoroutine(ExecuteNode(dialogue.GetEntryNode()));
			}
		}

		public bool isPlainLineDialogue = false;
		IEnumerator ExecuteNode(XNode.Node _node)
		{
			// Trigger Events and Script
			DialogueNode globalNode = (DialogueNode)_node;

			RCKFunctions.ExecuteEvents(globalNode.events);

			if (!string.IsNullOrEmpty(globalNode.resultScript))
				RCKFunctions.ExecuteScript(globalNode.resultScript);

			if (_node is EntryNode)
			{
				EntryNode thisNode = (EntryNode)_node;
				StartCoroutine(ExecuteNode(thisNode.GetOutputPort("firstNode").Connection.node));
			}
			else if (_node is ConditionsNode)
			{
				ConditionsNode thisNode = (ConditionsNode)_node;

				bool conditionsResult = RCKFunctions.VerifyConditions(thisNode.conditions);

				if (conditionsResult)
					StartCoroutine(ExecuteNode(thisNode.GetOutputPort("resultTrue").Connection.node));
				else
					StartCoroutine(ExecuteNode(thisNode.GetOutputPort("resultFalse").Connection.node));

			}
			else if (_node is NPCDialogueLineNode)
			{
				NPCDialogueLineNode thisNode = (NPCDialogueLineNode)_node;

				// Set the Dialoguable state
				speakingTo.OnSpeakALine(thisNode);

				if (!thisNode.plainLine)
				{
					input.SwitchCurrentActionMap("DialogueUI");

					// Flag that we're in conversation
					isInConversation = true;

					// Disable player controls
					mouseLook.SetLookAtTarget(speakingTo.GetEntityLookAtPos());
					EnableDisableControls(false);

					// Set the UI properly
					uiManager.heardDialogues.gameObject.SetActive(false);

					uiManager.playerQuestionsContainer.SetActive(false);
					uiManager.compassGameObject.SetActive(false);
					uiManager.crosshairGameObject.SetActive(false);


					// Npc Name
					uiManager.npc_Name.text = speakingTo.GetDialoguableName();
					uiManager.npc_Name.gameObject.SetActive(true);

					// Npc Line
					uiManager.npc_Line.text = thisNode.line;
					uiManager.npc_Line.gameObject.SetActive(true);

					// Whole Dialogue UI
					uiManager.dialogueContainer.SetActive(true);

					cameraLookNPC = true;
				}
				else
				{
					// Flag that we're in conversation
					isInConversation = true;
					isPlainLineDialogue = true;

					uiManager.heardDialogues.text = thisNode.line;
					uiManager.heardDialogues.gameObject.SetActive(true);
				}

				// - End UI

				// - End Updaters
				// Play the audio if exists
				if (thisNode.audioClip != null)
				{
					speakingTo.PlayAudioClip(thisNode.audioClip);
				}

				// Play talking animation if choosen
				if(!string.IsNullOrEmpty(thisNode.dialogueAnimationStr))
				{
					speakingTo.GetAnimator().CrossFade(thisNode.dialogueAnimationStr, .1f);
				}

				// Check for the timing of the line
				bool outOfTime = false;
				float startTime = Time.time;

				// To wait until the line ends
				while (!outOfTime)
				{
					// If we press X button
					if (input.actions.FindAction("SkipDialogue").triggered && Time.time - startTime >= 0.5f && !thisNode.plainLine || 
						WorldManager.instance.isLoading)
						outOfTime = true;

					// If the time expires
					if (!thisNode.useLenghtOfClip)
					{
						if (Time.time - startTime >= thisNode.lineTime)
							outOfTime = true;
					}
					else
					{
						if (Time.time - startTime >= thisNode.audioClip.length)
							outOfTime = true;
					}

					yield return null;
				}

				// Line has finished and player was teleported
				if (WorldManager.instance.isLoading)
				{
					// Reset the player status
					isInConversation = false;
					isPlainLineDialogue = false;

					// Disable the UI
					if (!thisNode.plainLine)
					{
						uiManager.dialogueContainer.SetActive(false);


						uiManager.compassGameObject.SetActive(true);
						uiManager.crosshairGameObject.SetActive(true);
						EnableDisableControls(false);

						cameraLookNPC = false;
					}
					else
					{
						uiManager.heardDialogues.gameObject.SetActive(false);
					}

					// Destroy every previous question
					foreach (Transform t in uiManager.playerQuestionsContent)
						Destroy(t.gameObject);

					speakingTo = null;

					yield break;
				}

				// Stop the audio source
				if(speakingTo != null)
					speakingTo.StopAudio();


				// Check what we have to do next
				switch (thisNode.afterLine)
				{
					case AfterLine.NPC_DialogueLine:
						// If we have to trigger another dialogue line, we just re-start this courutine with the new line
						StartCoroutine(ExecuteNode(thisNode.GetOutputPort("nextLine").Connection.node));
						yield break;

					case AfterLine.PlayerQuestions:

						// Play listening animation if choosen
						if (!string.IsNullOrEmpty(thisNode.dialogueAnimationListeningStr))
						{
							speakingTo.GetAnimator().CrossFade(thisNode.dialogueAnimationListeningStr, .1f);
						}

						if (thisNode.removePreviousQuestions)
						{
							foreach (Transform t in uiManager.playerQuestionsContent)
								Destroy(t.gameObject);
						}
						else if (thisNode.questionsToRemove.Length > 0)
						{
							List<GameObject> toDelete = new List<GameObject>();
							foreach (Transform t in uiManager.playerQuestionsContent)
							{
								for (int i = 0; i < thisNode.questionsToRemove.Length; i++)
								{
									if (t.GetComponent<PlayerQuestionUI>().question.qID == thisNode.questionsToRemove[i])
										toDelete.Add(t.gameObject);
								}
							}

							foreach (GameObject go in toDelete)
							{
								Destroy(go);
							}
						}

						List<PlayerQuestionUI> questions = new List<PlayerQuestionUI>();
						// Check if we have to add some new question
						for (int i = 0; i < thisNode.playerQuestions.Count; i++)
						{
							int tempPosition = thisNode.playerQuestions[i].Position;
							// In case, add them
							GameObject newQuestion = Instantiate(uiManager.playerQuestionPrefab, uiManager.playerQuestionsContent);

							if (tempPosition == 0)
								tempPosition = i;

							questions.Add(newQuestion.GetComponent<PlayerQuestionUI>());

							newQuestion.GetComponent<PlayerQuestionUI>()
								.Init(thisNode.playerQuestions[i], speakingTo,
								(DialogueNode)thisNode.GetOutputPort("playerQuestions " + i).Connection.node,
								thisNode.playerQuestions[i].Question, thisNode.playerQuestions[i].DeleteAfterAnswer,
								tempPosition);

							newQuestion.GetComponent<RectTransform>().SetSiblingIndex(tempPosition);
						}


						// Set the UI to allow the player to ask questions
						uiManager.npc_Line.gameObject.SetActive(false);
						uiManager.playerQuestionsContainer.SetActive(true);

						// Reset the scroll bar of the PlayerQuestionScrollView
						if (uiManager.playerQuestionsContainer.GetComponentInChildren<Scrollbar>() != null)
							uiManager.playerQuestionsContainer.GetComponentInChildren<Scrollbar>().value = 1f;

						speakingTo.OnFinishedSpeakingALine();

						yield return new WaitForEndOfFrame();
						uiManager.ReorderQuestions();
						uiManager.PreventUnselectedQuestionWithGamepad();

						yield return new WaitForEndOfFrame();
						uiManager.PreventUnselectedQuestionWithGamepad();

						yield break;

					case AfterLine.EndDialogue:

						speakingTo.OnDialogueEnds(this.gameObject);

						// Reset the player status
						isInConversation = false;

						// Disable the UI
						if (!thisNode.plainLine)
						{
							uiManager.dialogueContainer.SetActive(false);


							uiManager.compassGameObject.SetActive(true);
							uiManager.crosshairGameObject.SetActive(true);
							EnableDisableControls(true);

							cameraLookNPC = false;
							EndDialogue();
						}
						else
						{
							isPlainLineDialogue = false;
							uiManager.heardDialogues.gameObject.SetActive(false);
						}

						// Destroy every previous question
						foreach (Transform t in uiManager.playerQuestionsContent)
							Destroy(t.gameObject);

						// Reset speaking to animator
						if(speakingTo != null && speakingTo.GetAnimator() != null)
							speakingTo.GetAnimator().SetTrigger("CancelDialogueAnimation");

						speakingTo = null;

						yield break;

					case AfterLine.Continue:
						StartCoroutine(ExecuteNode(thisNode.GetOutputPort("output").Connection.node));
						break;
				}
			}
			else if (_node is PlayerQuestionsNode)
			{
				PlayerQuestionsNode thisNode = (PlayerQuestionsNode)_node;

				// Play listening animation if choosen
				if (!string.IsNullOrEmpty(thisNode.dialogueAnimationListeningStr))
				{
					speakingTo.GetAnimator().CrossFade(thisNode.dialogueAnimationListeningStr, .1f);
				}
				else
				{
					// Reset speaking to animator
					speakingTo.GetAnimator().SetTrigger("CancelDialogueAnimation");
				}

				// Flag that we're in conversation
				isInConversation = true;

				input.SwitchCurrentActionMap("DialogueUI");

				mouseLook.SetLookAtTarget(speakingTo.GetEntityLookAtPos());
				// Disable player controls
				EnableDisableControls(false);

				// Set the UI properly
				uiManager.heardDialogues.gameObject.SetActive(false);

				uiManager.playerQuestionsContainer.SetActive(false);
				uiManager.compassGameObject.SetActive(false);
				uiManager.crosshairGameObject.SetActive(false);


				// Npc Name
				uiManager.npc_Name.text = speakingTo.GetDialoguableName();
				uiManager.npc_Name.gameObject.SetActive(true);

				// Whole Dialogue UI
				uiManager.dialogueContainer.SetActive(true);

				cameraLookNPC = true;

				if (thisNode.removePreviousQuestions)
				{
					foreach (Transform t in uiManager.playerQuestionsContent)
						Destroy(t.gameObject);
				}
				else if (thisNode.questionsToRemove.Length > 0)
				{
					List<GameObject> toDelete = new List<GameObject>();
					foreach (Transform t in uiManager.playerQuestionsContent)
					{
						for (int i = 0; i < thisNode.questionsToRemove.Length; i++)
						{
							if (t.GetComponent<PlayerQuestionUI>().question.qID == thisNode.questionsToRemove[i])
								toDelete.Add(t.gameObject);
						}
					}

					foreach (GameObject go in toDelete)
					{
						Destroy(go);
					}
				}

				List<PlayerQuestionUI> questions = new List<PlayerQuestionUI>();
				// Check if we have to add some new question
				for (int i = 0; i < thisNode.playerQuestions.Count; i++)
				{
					int tempPosition = thisNode.playerQuestions[i].Position;
					// In case, add them
					GameObject newQuestion = Instantiate(uiManager.playerQuestionPrefab, uiManager.playerQuestionsContent);

					if (tempPosition == 0)
						tempPosition = i;

					questions.Add(newQuestion.GetComponent<PlayerQuestionUI>());

					newQuestion.GetComponent<PlayerQuestionUI>()
						.Init(thisNode.playerQuestions[i], speakingTo,
						(DialogueNode)thisNode.GetOutputPort("playerQuestions " + i).Connection.node,
						thisNode.playerQuestions[i].Question, thisNode.playerQuestions[i].DeleteAfterAnswer,
						tempPosition);

					newQuestion.GetComponent<RectTransform>().SetSiblingIndex(tempPosition);
				}

				// Set the UI to allow the player to ask questions
				uiManager.npc_Line.gameObject.SetActive(false);
				uiManager.playerQuestionsContainer.SetActive(true);

				// Reset the scroll bar of the PlayerQuestionScrollView
				if (uiManager.playerQuestionsContainer.GetComponentInChildren<Scrollbar>() != null)
					uiManager.playerQuestionsContainer.GetComponentInChildren<Scrollbar>().value = 1f;

				speakingTo.OnFinishedSpeakingALine();


				yield return new WaitForEndOfFrame();
				uiManager.ReorderQuestions();

				uiManager.PreventUnselectedQuestionWithGamepad();

				yield return new WaitForEndOfFrame();
				uiManager.PreventUnselectedQuestionWithGamepad();
			}
			else if (_node is ChangeDialogueNode)
			{
				ChangeDialogueNode thisNode = (ChangeDialogueNode)_node;

				if (thisNode.onNPCWhosSpeaking)
				{
					speakingTo.ChangeDialogueGraph(thisNode.newDialogue);

					if (thisNode.startDialogueImmediatly)
					{
						var npcSpeakingSaved = speakingTo;
						EndDialogue();

						StartDialogue(npcSpeakingSaved);
					}
					else
						StartCoroutine(ExecuteNode(thisNode.GetOutputPort("output").Connection.node));

				}
				else
				{
					RCKFunctions.ChangeDialogueToRckAI(thisNode.npcRef, thisNode.newDialogue.ID);
					StartCoroutine(ExecuteNode(thisNode.GetOutputPort("output").Connection.node));
				}

				yield break;
			}
			else if (_node is ChangeStateNode)
			{
				ChangeStateNode thisNode = (ChangeStateNode)_node;

				switch (thisNode.stateChange)
				{
					case ChangeStateNode.DialogueStateChange.Trade:

						if (thisNode.toCurrentNPC)
							RCKFunctions.StartTrading(speakingTo.GetEntityGameObject().GetComponent<Merchant>());

						// TODO find npc and do stuff
						break;

					case ChangeStateNode.DialogueStateChange.Loot:

						// TODO find looting point and do stuff

						break;

					case ChangeStateNode.DialogueStateChange.Teleport:

						//WorldStreaming.manager.Teleport(thisNode.coordinates);

						break;

					case ChangeStateNode.DialogueStateChange.ChangeCell:

						//WorldStreaming.manager.StartLoadingInterior(thisNode.cell.worldspace, thisNode.cell, null, thisNode.coordinates);

						break;

					case ChangeStateNode.DialogueStateChange.SpeakToNPC:

						// TODO Find the NPC and do stuff

						break;
				}

				if (thisNode.interruptsDialogue)
					EndDialogue();

				StartCoroutine(ExecuteNode(thisNode.GetOutputPort("output").Connection.node));
			}
			else if (_node is RandomNode)
			{
				RandomNode thisNode = (RandomNode)_node;
				StartCoroutine(ExecuteNode(thisNode.PickRandomExit()));
			}
			else if(_node is Dialogue_AISetFieldNode)
			{
				Dialogue_AISetFieldNode thisNode = (Dialogue_AISetFieldNode)_node;
				thisNode.OnStart();

				if(thisNode.speakerID == 0) // Its to the NPC we're talking to
				{
					var component = speakingTo.GetEntityGameObject().GetComponent<RckAI>(); // it's always the speaker with id 0 because it's player to ai dialogue

					if (component == null)
					{
						Debug.Log("Dialogue Node : Tried to SetField but the given Component: \"RckAI\" was not found on Speaker Index 0. Node fails.");
						yield break;
					}

					var field = component.GetType().GetField(thisNode.FieldToSet);

					field.SetValue(component, thisNode.storedValue.GetValue());
				}

				StartCoroutine(ExecuteNode(thisNode.GetOutputPort("output").Connection.node));
			}
			else if(_node is Dialogue_AIInvokeNode)
			{
				Dialogue_AIInvokeNode thisNode = (Dialogue_AIInvokeNode)_node;

				NodesHelper.AIInvokeCall(thisNode.MethodToCall, speakingTo.GetEntityGameObject().GetComponent<RckAI>(), thisNode.parameters);

				StartCoroutine(ExecuteNode(thisNode.GetOutputPort("output").Connection.node));
			}
			else if (_node is EndNode)
			{
				EndNode thisNode = (EndNode)_node;

				// Reset speaking to animator
				speakingTo.GetAnimator().SetTrigger("CancelDialogueAnimation");
				speakingTo.OnDialogueEnds(this.gameObject);

				EndDialogue();
				yield break;
			}

			yield return null;
		}

		void EndDialogue()
		{
			//speakingTo.OnDialogueEnds(this.gameObject);
			mouseLook.ApplyCurrentRotation();
			mouseLook.ClearLookAt();

			// Reset the player status
			isInConversation = false;
			isPlainLineDialogue = false;

			// Disable the UI
			uiManager.dialogueContainer.SetActive(false);


			uiManager.compassGameObject.SetActive(true);
			uiManager.crosshairGameObject.SetActive(true);
			EnableDisableControls(true);

			cameraLookNPC = false;
			uiManager.heardDialogues.gameObject.SetActive(false);

			// Destroy every previous question
			foreach (Transform t in uiManager.playerQuestionsContent)
				Destroy(t.gameObject);

			speakingTo = null;

			// Input scheme
			input.SwitchCurrentActionMap("Player");

		}
		public static int SortByPosition(PlayerQuestionUI p1, PlayerQuestionUI p2)
		{
			return p1.position.CompareTo(p2.position);
		}

		/// <summary>
		/// Method called from PlayerQuestionUI to ask a question
		/// </summary>
		/// <param name="npc">The NPC with we are speaking with</param>
		/// <param name="response">His response to our question</param>
		/// <param name="DestroyQuestion">Destroy the question after answer?</param>
		/// <param name="theQuestion">The question to destroy</param>
		public void AskQuestion(IDialoguable _dialoguable, XNode.Node response, bool DestroyQuestion, GameObject theQuestion = null, bool isNpcToNpcDialogue = false, IDialoguable[] _dialoguables = null)
		{
			if (!isNpcToNpcDialogue)
				StartCoroutine(ExecuteNode(response));
			else
			{
				isInConversation = false;
				speakingTo = null;
				_dialoguable.ExecuteDialogueNode(response, _dialoguables);
			}

			// DestroyQuestion = What we said in the ScriptableObject
			// Destroy after .05f seconds to not have bad effects in the PlayerQuestionUI (Question disappear before the panel's fadeout)
			if (DestroyQuestion)
				Destroy(theQuestion, .05f);
		}

		private void CheckForIDraggable()
		{
			IDraggable draggable = rayHit.transform.gameObject.GetComponent<IDraggable>();

			if (draggable != null && !isDragging)
			{
				if(!isDragging && dragKeyBeingHeld)
				{
					itemRigidbody = draggable.GetGameObject().GetComponent<Rigidbody>();
					dragItemScript = draggable.GetGameObject().GetComponent<ItemInWorld>();

					if (itemRigidbody != null)
					{
						draggable.OnBeingDragged();

						BeginDragItem();
					}
				}
			}
		}

		private void BeginDragItem()
		{
			//if (ItemUnderFeet())
			//	return;
			itemRigidbody.angularVelocity = Vector3.zero;
			itemRigidbody.velocity = Vector3.zero;

			itemRigidbody.useGravity = false;

			isDragging = true;
		}

		public float powerVector = 5f;

		public float droppingDistance = 3f;
		public float moveThresold = .1f;
		public float stopThresold = .1f;

		private void ManageDraggable()
		{
			if (isDragging && itemRigidbody != null)
			{
				if (!dragKeyBeingHeld)
					StopDragging();
				else if(itemRigidbody != null && dragKeyBeingHeld && dragItemScript.canBeDragged)
				{
					//if (ItemUnderFeet())
					//{
					//	StopDragging();
					//	return;
					//}

					//itemRigidbody.position = Vector3.Lerp(itemRigidbody.position, mainCamera.transform.position + mainCamera.transform.forward * 1f, (dragForce * Time.deltaTime));
					//itemRigidbody.MovePosition(Vector3.Lerp(itemRigidbody.transform.position, mainCamera.transform.position + mainCamera.transform.forward, Time.fixedDeltaTime * dragForce));

					//Vector3 toCameraCenterVector = (mainCamera.transform.position + mainCamera.transform.forward) - itemRigidbody.transform.position;
					//toCameraCenterVector = toCameraCenterVector.normalized;

					//itemRigidbody.AddForce(Vector3.MoveTowards(itemRigidbody.transform.position, toCameraCenterVector, dragForce * Time.deltaTime) * powerVector, ForceMode.VelocityChange);
					//itemRigidbody.velocity = Vector3.zero;

					Vector3 toCameraCenterVector = (mainCamera.transform.position + mainCamera.transform.forward) - itemRigidbody.transform.position;
					toCameraCenterVector = toCameraCenterVector.normalized * .25f;

					var dst = Vector3.Distance(itemRigidbody.transform.position, mainCamera.transform.position + mainCamera.transform.forward);
					if (dst > moveThresold)
						dragForce = 1000f;
					else
						dragForce = 150f;

					if(dst > stopThresold)
						itemRigidbody.AddForce(toCameraCenterVector * (dragForce * Time.fixedDeltaTime), ForceMode.VelocityChange);

					itemRigidbody.velocity = Vector3.zero;


					Debug.DrawRay(itemRigidbody.transform.position, toCameraCenterVector, Color.red);

					if (Mathf.Abs(mouseLook.x) > 2f || Mathf.Abs(mouseLook.y) > 2f)
					{
						dragDirection = new Vector3(mouseLook.x, mouseLook.y, 0);
						dragDirection = transform.TransformDirection(dragDirection.normalized * (dragForce * Time.fixedDeltaTime));
					}
					else
						dragDirection = Vector3.zero;

					if (Vector3.Distance(mainCamera.transform.position + mainCamera.transform.forward, itemRigidbody.transform.position) > droppingDistance)
						StopDragging();
				}
			}
			else
			{
				isDragging = false;
			}
		}


		public void DisplayHeardLine(string _line, float _time)
		{
			uiManager.heardDialogues.text = _line;
			uiManager.heardDialogues.gameObject.SetActive(true);

			Invoke("HideHeardLine", _time);
		}

		public void HideHeardLine()
		{
			uiManager.heardDialogues.gameObject.SetActive(false);
		}

		/// <summary>
		/// Called when we stop to drag the item, reset its state to default world item
		/// </summary>
		public void StopDragging()
		{
			itemRigidbody.useGravity = true;
			itemRigidbody.velocity = Vector3.zero;

			itemRigidbody = null;
			isDragging = false;
		}

		public void SetSpeakerIndex(int index)
		{
			throw new System.NotImplementedException();
		}

		public void DialogueLogic(IDialoguable[] entities, DialogueGraph dialogue)
		{
			throw new System.NotImplementedException();
		}

		public IEnumerator ExecuteDialogueNode(Node _node, IDialoguable[] _entities)
		{
			throw new System.NotImplementedException();
		}

		public void SpeakToEntity(IDialoguable target)
		{
			throw new System.NotImplementedException();
		}

		public void ChangeDialogueGraph(DialogueGraph _newDialogueGraph)
		{
			throw new System.NotImplementedException();
		}

		public bool CanDialogue()
		{
			return (isAlive && !isInConversation && !isInteracting && !isLooting && isLoaded);
		}

		public string GetDialoguableName()
		{
			throw new System.NotImplementedException();
		}

		public void OnDialogueStarts(GameObject target)
		{
			throw new System.NotImplementedException();
		}

		public void OnDialogueEnds(GameObject target)
		{
			throw new System.NotImplementedException();
		}

		public DialogueGraph GetCurrentDialogueGraph()
		{
			throw new System.NotImplementedException();
		}

		public void OnSpeakALine(NPCDialogueLineNode currentNode)
		{
			throw new System.NotImplementedException();
		}

		public void OnFinishedSpeakingALine()
		{
			throw new System.NotImplementedException();
		}

		public Transform GetEntityLookAtPos()
		{
			throw new System.NotImplementedException();
		}

		public GameObject GetEntityGameObject()
		{
			return gameObject;
		}

		public void PlayAudioClip(AudioClip clip)
		{
			throw new System.NotImplementedException();
		}

		public void StopAudio()
		{
			throw new System.NotImplementedException();
		}

		public bool IsTalking()
		{
			throw new System.NotImplementedException();
		}

		Animator IDialoguable.GetAnimator()
		{
			throw new System.NotImplementedException();
		}

		int IDialoguable.GetSpeakerIndex()
		{
			throw new System.NotImplementedException();
		}


		void IDialoguable.ForceToStopDialogue()
		{
			throw new System.NotImplementedException();
		}
	}
}