using System.Collections;
using System.Collections.Generic;
using UnityEngine;
using UnityEngine.UI;

public class NPCDialogue : MonoBehaviour
{
    public string name;
    public Text nameText;
    public Text nameText1;
    public Text nameText2;
    public Text dialogueText;
    //first dialogue
    public DialogueNpcTest dialogue;
    //dialogue during quest
    public DialogueNpcTest dialogueWQuest;
    //dialotgue after quest
    public DialogueNpcTest dialogueAQuest;
        //first dialogue
    public DialogueNpcTest dialoguePolish;
    //dialogue during quest
    public DialogueNpcTest dialogueWQuestPolish;
    //dialotgue after quest
    public DialogueNpcTest dialogueAQuestPolish;

    private string language;

    private Queue<string> sentences;
    private Queue<string> sentencesWQuest;
    private Queue<string> sentencesAQuest;
    public GameObject Panel;

    public string requiredItem;
    public GameObject QuestPanel;
    public GameObject FinishQuestPanel;

    bool triggered = false;

    public int isQuest;
    //  0 - NPC no quest
    //  1 - NPC with quest that hasnt been started
    //  2 - NPC with ongoing quest
    //  3 - NPC with quest that has been finished

    void Awake()
    {
        requiredItem = "Axe";
    }
    
    void Start()
    {
        sentences = new Queue<string>();
        sentencesWQuest = new Queue<string>();
        sentencesAQuest = new Queue<string>();
    }

    public void TriggerDialogue()
    {
        language = PlayerPrefs.GetString("language");
        if (isQuest == 2)
        {
            if (PlayerPrefs.HasKey("language"))
            {
                language = PlayerPrefs.GetString("language");
                if (language == "English")
                {
                    StartDialogue(dialogueWQuest);
                }
                else if (language == "Polish")
                {
                    StartDialogue(dialogueWQuestPolish);
                }
            }
            else
            {
                StartDialogue(dialogueWQuest);
            }
        }
        else if (isQuest == 3)
        {
            if (PlayerPrefs.HasKey("language"))
            {
                language = PlayerPrefs.GetString("language");
                if (language == "English")
                {
                    StartDialogue(dialogueAQuest);
                }
                else if (language == "Polish")
                {
                    StartDialogue(dialogueAQuestPolish);
                }
            }
            else
            {
                StartDialogue(dialogueAQuest);
            }
        }
        else
        {
            if (PlayerPrefs.HasKey("language"))
            {
                language = PlayerPrefs.GetString("language");
                if (language == "English")
                {
                    StartDialogue(dialogue);
                }
                else if (language == "Polish")
                {
                    StartDialogue(dialoguePolish);
                }
            }
            else
            {
                StartDialogue(dialogue);
            }
        }
    }

    void OnTriggerExit2D(Collider2D collision)
    {
        if (Panel != null)
        {

            Panel.SetActive(false);
            QuestPanel.SetActive(false);
            FinishQuestPanel.SetActive(false);

        }
        triggered = false;
    }

    private void OnTriggerEnter2D(Collider2D collision)
    {
        if (collision.tag == "Player")
        {
            triggered = true;
        }
    }

    void Update()
    {
 
        if (triggered)
        {
            if (Input.GetKeyDown(KeyCode.E))
            {
                if (Panel != null)
                {
                    Panel.SetActive(true);
                }
                if (isQuest == 2)
                {
                    var questItem = InventoryUIManager.Instance.FindItemInWarehouseByName(requiredItem);
                    if(!questItem.Equals(new KeyValuePair<int, Item>()))
                    {
                        FinishQuestPanel.SetActive(true);
                        Panel.SetActive(false);
                    } else {
                        if (PlayerPrefs.HasKey("language"))
                        {
                            language = PlayerPrefs.GetString("language");
                            if (language == "English")
                            {
                                StartDialogue(dialogueWQuest);
                            }
                            else if (language == "Polish")
                            {
                                StartDialogue(dialogueWQuestPolish);
                            }
                        }
                        else
                        {
                            StartDialogue(dialogueWQuest);
                        }
                    }

                }
                else if (isQuest == 3)
                {
                    if (PlayerPrefs.HasKey("language"))
                    {
                        language = PlayerPrefs.GetString("language");
                        if (language == "English")
                        {
                            StartDialogue(dialogueAQuest);
                        }
                        else if (language == "Polish")
                        {
                            StartDialogue(dialogueAQuestPolish);
                        }
                    }
                    else
                    {
                        StartDialogue(dialogueAQuest);
                    }
                }
                else
                {
                    if (PlayerPrefs.HasKey("language"))
                    {
                        language = PlayerPrefs.GetString("language");
                        if (language == "English")
                        {
                            StartDialogue(dialogue);
                        }
                        else if (language == "Polish")
                        {
                            StartDialogue(dialoguePolish);
                        }
                    }
                    else
                    {
                        StartDialogue(dialogue);
                    }
                }
            }
        }
    }


    public void StartDialogue(DialogueNpcTest dialogue)
    { 
        nameText.text = dialogue.name;
        nameText1.text = dialogue.name;
        nameText2.text = dialogue.name;

        sentences.Clear();

        foreach(string sentence in dialogue.sentences)
        {
            sentences.Enqueue(sentence);
        }


        DisplayNextSentence();
    }

    public void DisplayNextSentence()
    {
        if (isQuest == 2)
        {
            if (sentences.Count == 0)
            {
                var questItem = InventoryUIManager.Instance.FindItemInWarehouseByName(requiredItem);
                if(!questItem.Equals(new KeyValuePair<int, Item>()))
                {
                    FinishQuestPanel.SetActive(true);
                    Panel.SetActive(false);
                    return;
                }
                else
                {
                    EndDialogue();
                    return;
                }
            }
            string sentence = sentences.Dequeue();
            dialogueText.text = sentence;
        }
        else if (isQuest == 0)
        {
            if (sentences.Count == 0)
            {
                EndDialogue();
                return;
            }
            string sentence = sentences.Dequeue();
            dialogueText.text = sentence;
        }
        else if (isQuest == 3)
        {
            if (sentences.Count == 0)
            {
                EndDialogue();
                return;
            }
            string sentence = sentences.Dequeue();
            dialogueText.text = sentence;
        }
        else if (isQuest == 1)
        {
            if (sentences.Count == 0)
            {
                QuestPanel.SetActive(true);
                Panel.SetActive(false);
                return;
            }
            string sentence = sentences.Dequeue();
            dialogueText.text = sentence;
        }

    }

    public void EndDialogue()
    {
        Panel.SetActive(false);
        QuestPanel.SetActive(false);
        FinishQuestPanel.SetActive(false);

    }

    public void QuestAccepted()
    {
        isQuest = 2;
        QuestPanel.SetActive(false);
        if(!gameObject.GetComponent<NPCQuest>().IsTaskAccepted())
        {
            // 1. Add task to palyer quests list
            Task myTask = gameObject.GetComponent<NPCQuest>().AcceptTask();
        
            TaskUIManager.Instance.Add(myTask);

            // 2. Drop Axe On Map
            gameObject.GetComponent<NPCQuest>().DropItem();
        } else {
            Debug.Log("Ten task został juz rozpoczęty!");
        }
    }

    public void FinishQuest()
    {
        // 1. Take item from palyer
        var questItem = InventoryUIManager.Instance.FindItemInWarehouseByName(requiredItem);

        InventoryUIManager.Instance.RemoveByPosition(questItem[0].Key);

        // 3. remove quest from player list
        var task = TaskUIManager.Instance.FindTaskByName(gameObject.GetComponent<NPCQuest>().quest.Title);

        if (task.Count == 0)
            Debug.LogError($"Task '{gameObject.GetComponent<NPCQuest>().quest.Title}' not found");
        else
            TaskUIManager.Instance.RemoveByName(gameObject.GetComponent<NPCQuest>().quest.Title);

        // 3. Set as finished
        isQuest = 3;
        EndDialogue();
    }

}