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

public class MapCreator : MonoBehaviour
{
    //List of existing MapParts
    [SerializeField] List<GameObject> mapPrefabs = new List<GameObject>();
    //List of existing placement objects
    [SerializeField] List<GameObject> interiorObjecs = new List<GameObject>();


     public List<GameObject> activeMapParts = new List<GameObject>();
     public List<GameObject> inactiveMapParts = new List<GameObject>();

    //placment objects that are currenly active inb scene
    public List<GameObject> activeInteriorObjects = new List<GameObject>();
    //placement objects that are moved to the object collector
    public List<GameObject> inactiveInteriorObjects = new List<GameObject>();


     [SerializeField] GameObject objectCollector;
     [SerializeField] GameObject startMapHere;

    Vector3 lastPlacePos;

    int humanIdCount = 0;
    int mapPartIdCount = 1;

    //
    void Start()
    {
        lastPlacePos = startMapHere.transform.position;

        PopulateMapPartsPool();
        PopulateInteriorObjPool();

        PlaceStartMapParts();
    }//end start

    //Create starting MapObjects inside the ppol
    void PopulateMapPartsPool()
    {
        for (int i = 0; i < 20; i++)
        {
            GameObject mapPart;
            //Get MapPart
            int chooseMapP= ChooseMapPart();
            GameObject chosenMapPart = mapPrefabs[chooseMapP].gameObject;

            //Create new instance of MapPart
            mapPart = Instantiate(chosenMapPart, objectCollector.transform);

            mapPart.name = "MapPart " + mapPartIdCount;
            mapPart.SetActive(false);

            //Add Composition to list
            inactiveMapParts.Add(mapPart);

            mapPartIdCount ++;
        }
    }//PopulateMapPartsPool end

    int ChooseMapPart()
    {
        int number = Random.Range(0, mapPrefabs.Count);
        return number;
    }

    void PlaceStartMapParts()
    {
        for (int i = 1; i < 10; i++)
        {
            //place mapPart at last empty position
            PlaceMapPart();
        }
    }

    //Place a MapPart
    public void PlaceMapPart()
    {
        //Select instance of MapPart
        GameObject mapPart = inactiveMapParts[0];

        mapPart.transform.position = lastPlacePos;
        mapPart.SetActive(true);

        //Add MPart to active list
        activeMapParts.Add(mapPart);

        //Rem MPart from inactive list
        inactiveMapParts.RemoveAt(0);

        //Add Placable Objects to MapPart
        PlaceInteriorObj(activeMapParts[0]);

        lastPlacePos = mapPart.transform.GetChild(9).transform.position;

    }//end PlaceMapPart

    public void RemoveMapPart()
    {
        if(inactiveMapParts.Count < 5)
        {   //move to ObjCollector
            activeMapParts[0].transform.position = objectCollector.transform.position;

            //Disable GameObject
            activeMapParts[0].gameObject.SetActive(false);

            //add MapP to inactive list
            inactiveMapParts.Add(activeMapParts[0]);

            //print(activeMapParts[0] + " Removed2");
            activeMapParts.RemoveAt(0);
        }
    }


    //----------Placeable Objects---------------------------------


    int ChooseInteriorObj()
    {
        int number = Random.Range(0, interiorObjecs.Count);
        return number;
    }

    void PopulateInteriorObjPool()
    {
        GameObject theObj = interiorObjecs[ChooseInteriorObj()];

        for (int i = 0; i < 9; i++)
        {
            Instantiate(theObj, GameManager.GMI.objectCollectorObj.transform);
            humanIdCount ++;
            theObj.GetComponent<IntriorObject>().idCount = humanIdCount;
            //theObj.GetComponent<IntriorObject>().placed = true;
            theObj.GetComponent<IntriorObject>().SetText();

            inactiveInteriorObjects.Add(theObj);
        }
    }//end PopulateInteriorObjPool

    void PlaceInteriorObj(GameObject mapPart)
    {
        for (int i = 0; i < 9; i++)
        {
            //dont spwawn everywhere
            if(RollIfPlaced())
            {
                Transform theTransform = mapPart.transform.GetChild(i).transform;
                //print(mapPart.transform.GetChild(i).transform.position);

                if(inactiveInteriorObjects.Count > 0 )
                {
                    mapPart.transform.position = theTransform.transform.position;
                    mapPart.SetActive(true);

                    print("PO: " +  inactiveInteriorObjects[0].GetComponentInChildren<TextMesh>().text + " placed on: " + mapPart.name + "child: " + mapPart.transform.GetChild(i));

                    activeInteriorObjects.Add(inactiveInteriorObjects[0]);
                    inactiveInteriorObjects.RemoveAt(0);
                }
                else
                {
                    print("no POs in pool");
                }

            }//end if
        }//end for
    }//end PPO

    public void RemoveInteriorObj(GameObject item)
    {
        print("PO removed");
        item.transform.position = GameManager.GMI.objectCollectorPosition;
        item.transform.eulerAngles = new Vector3(-90,0,0);
        item.GetComponent<Rigidbody>().velocity = new Vector3(0,0,0);
        item.GetComponent<Rigidbody>().useGravity = false;
        item.GetComponent<Rigidbody>().isKinematic = true;
        //item.GetComponentInChildren<TextMesh>().text = "removed";

        item.SetActive(false);
        item.GetComponent<IntriorObject>().checkLeaving = false;

        inactiveInteriorObjects.Add(item);
        activeInteriorObjects.Remove(item);
    }//end PPO


    //Randomizes if object are placed or not
    bool RollIfPlaced()
    {
        int number = Random.Range(0, 50);
        if(number == 0) {return true;}
        else {return false;}
    }


}//end class