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

public class RQNA_Manager : MonoBehaviour
{
    public static RQNA_Manager instance;
    public GameObject answerPrefab, questionPrefab;
    public Transform answerPanel, questionPanel;
    public List<RQNA_QuestionClass> questions = new List<RQNA_QuestionClass>();
    public int answered = 0;

    public void Awake()
    {
        instance = this;
        answerPanel = GameObject.Find("AnswerPanel").transform;
        questionPanel = GameObject.Find("QuestionPanel").transform;
        SetupQuestion();
        SetupAnswer();
        GameControl.instance.StartedGame();
    }

    public void SetupQuestion()
    {
        List<int> usableNumbers = new List<int>();
        for (int n = 0; n < questions.Count; n++)
        {
            usableNumbers.Add(n);
        }
        for(int i = 0; i < questions.Count; i++)
        {
            int rng = Random.Range(0,usableNumbers.Count);
            int toUse = usableNumbers[rng];
            RQNA_Dropper temp = Instantiate(questionPrefab, questionPanel, false).GetComponent<RQNA_Dropper>();
            temp.Setup(questions[toUse].questionStr,toUse,questions[i].answer.Count);
            usableNumbers.RemoveAt(rng);
        }
    }

    public void SetupAnswer()
    {
        List<int> usableNumbers = new List<int>();
        if (questions[0].answer.Count > 1)
        {
            List<List<int>> questionNumbers = new List<List<int>>();
            for (int n = 0; n < questions.Count; n++)
            {
                List<int> empty = new List<int>();
                questionNumbers.Add(empty);
                for (int a = 0; a < questions[n].answer.Count; a++)
                {
                    questionNumbers[n].Add(a);
                }
            }
            List<int> usableIndex = new List<int>();
            for (int i = 0; i < questionNumbers.Count; i++)
            {
                usableIndex.Add(i);
            }
            for (int b = 0; b < questions[0].answer.Count * questions.Count; b++)
            {
                int rng = Random.Range(0, usableIndex.Count);
                int usedInd = usableIndex[rng];
                List<int> toUse = questionNumbers[usedInd];
                int rng2 = Random.Range(0, toUse.Count);
                int toUse2 = toUse[rng2];
                RQNA_Dragger temp = Instantiate(answerPrefab, answerPanel, false).GetComponent<RQNA_Dragger>();
                temp.Setup(questions[usedInd].answer[toUse2], usedInd);
                questionNumbers[usedInd].RemoveAt(rng2);
                Debug.Log("Spawned " + toUse2 + " answer from group " + usedInd);
                if(questionNumbers[usedInd].Count == 0)
                {
                    usableIndex.RemoveAt(rng);
                }
            }
        }
        else
        {
            for (int n = 0; n < questions.Count; n++)
            {
                usableNumbers.Add(n);
            }
            for (int n = 0; n < questions.Count; n++)
            {
                int rng = Random.Range(0, usableNumbers.Count);
                int toUse = usableNumbers[rng];
                RQNA_Dragger temp = Instantiate(answerPrefab, answerPanel, false).GetComponent<RQNA_Dragger>();
                temp.Setup(questions[toUse].answer[0], toUse);
                usableNumbers.RemoveAt(rng);
            }
        }
        
    }

    public void CorrectAnswer()
    {
        answered++;
        if (answered == questions.Count * questions[0].answer.Count)
        {
            GameControl.instance.FinishGame();
        }
    }
}