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

public class pickUpManager : MonoBehaviour
{
    public bool showIconsActive = true;

    public List<pickUpElementInfo> mainPickUpList = new List<pickUpElementInfo> ();

    public List<pickUpIconInfo> pickUpIconList = new List<pickUpIconInfo> ();

    public List<playerPickupIconManager> playerPickupIconManagerList = new List<playerPickupIconManager> ();

    int currentID = 0;


    public const string mainManagerName = "Pickup Manager";

    public static string getMainManagerName ()
    {
        return mainManagerName;
    }

    private static pickUpManager _pickUpManagerInstance;

    public static pickUpManager Instance { get { return _pickUpManagerInstance; } }

    bool instanceInitialized;


    public void getComponentInstance ()
    {
        if (instanceInitialized) {
            return;
        }

        if (_pickUpManagerInstance != null && _pickUpManagerInstance != this) {
            Destroy (this.gameObject);

            return;
        }

        _pickUpManagerInstance = this;

        instanceInitialized = true;
    }

    void Awake ()
    {
        getComponentInstance ();
    }

    public void addNewPlayer (playerPickupIconManager newPlayer)
    {
        if (!showIconsActive) {
            return;
        }

        playerPickupIconManagerList.Add (newPlayer);


        int pickUpIconListCount = pickUpIconList.Count;

        if (pickUpIconListCount > 0) {

            for (int i = 0; i < pickUpIconListCount; i++) {
                newPlayer.setPickUpIcon (
                    pickUpIconList [i].target,
                    pickUpIconList [i].iconTexture,
                    pickUpIconList [i].ID,
                    pickUpIconList [i].iconPrefab);
            }
        }
    }

    //set what type of pick up is this object, and the object that the icon has to follow
    public void setPickUpIcon (GameObject target, string pickupIconGeneralName, string pickupIconName)
    {
        if (!showIconsActive) {
            return;
        }

        int targetIndex = pickUpIconList.FindIndex (s => s.target == target);

        if (targetIndex > -1) {
            //print (target.name + " alredy added, cancelling");

            return;
        }

        pickUpIconInfo newIcon = new pickUpIconInfo ();

        newIcon.name = target.name;
        newIcon.ID = currentID;
        newIcon.target = target;

        newIcon.targetTransform = target.transform;

        Texture iconTexture = null;

        GameObject iconPrefab = null;

        int pickupListIndex = mainPickUpList.FindIndex (s => s.pickUpType.ToLower () == pickupIconGeneralName.ToLower ());

        if (pickupListIndex > -1) {
            pickUpElementInfo currentPickupElementInfo = mainPickUpList [pickupListIndex];

            bool useGeneralIcon = currentPickupElementInfo.useGeneralIcon;

            int customIndexTexture = -1;

            if (!pickupIconName.Equals ("")) {
                int pickupTypeIndex = currentPickupElementInfo.pickUpTypeList.FindIndex (s => s.Name.ToLower () == pickupIconName.ToLower ());

                if (pickupTypeIndex > -1) {
                    customIndexTexture = pickupTypeIndex;

                    useGeneralIcon = false;
                }
            }

            if (useGeneralIcon) {
                iconTexture = currentPickupElementInfo.generalIcon;
            } else {
                if (customIndexTexture > -1) {
                    iconTexture = currentPickupElementInfo.pickUpTypeList [customIndexTexture].pickupIcon;
                }
            }

            bool useCustomIconPrefab = currentPickupElementInfo.useCustomIconPrefab;

            if (customIndexTexture > -1) {
                if (currentPickupElementInfo.pickUpTypeList [customIndexTexture].useCustomIconPrefab) {
                    iconPrefab = currentPickupElementInfo.pickUpTypeList [customIndexTexture].customIconPrefab;

                    useCustomIconPrefab = false;
                }
            }

            if (useCustomIconPrefab) {
                iconPrefab = currentPickupElementInfo.customIconPrefab;
            }
        }

        newIcon.iconTexture = iconTexture;

        newIcon.iconPrefab = iconPrefab;

        pickUpIconList.Add (newIcon);

        for (int i = 0; i < playerPickupIconManagerList.Count; i++) {
            playerPickupIconManagerList [i].setPickUpIcon (target, iconTexture, currentID, iconPrefab);
        }

        currentID++;
    }

    //destroy the icon
    public void removeTarget (GameObject target)
    {
        if (!showIconsActive) {
            return;
        }

        for (int i = 0; i < pickUpIconList.Count; i++) {

            if (pickUpIconList [i].target != null) {
                if (pickUpIconList [i].target == target) {
                    removeAtTarget (pickUpIconList [i].ID, i);

                    return;
                }
            }
        }
    }

    public void removeAtTarget (int objectID, int objectIndex)
    {
        if (!showIconsActive) {
            return;
        }

        for (int i = 0; i < playerPickupIconManagerList.Count; i++) {
            playerPickupIconManagerList [i].removeAtTargetByID (objectID);
        }

        pickUpIconList.RemoveAt (objectIndex);
    }

    public void removeElementFromPickupListCalledByPlayer (int objectID)
    {
        if (!showIconsActive) {
            return;
        }

        for (int i = 0; i < pickUpIconList.Count; i++) {
            if (pickUpIconList [i].ID == objectID) {
                pickUpIconList.RemoveAt (i);
                return;
            }
        }
    }

    public void setPauseState (bool state, GameObject iconObject)
    {
        if (!showIconsActive) {
            return;
        }

        for (int i = 0; i < pickUpIconList.Count; i++) {
            if (pickUpIconList [i].target == iconObject) {

                pickUpIconList [i].paused = state;

                for (int j = 0; j < playerPickupIconManagerList.Count; j++) {
                    playerPickupIconManagerList [j].setPauseState (state, i);
                }
            }
        }
    }

    public void setNamesConfigured (int currentIndex)
    {
        pickUpElementInfo currentpickUpElementInfo = mainPickUpList [currentIndex];

        for (int i = 0; i < currentpickUpElementInfo.pickUpTypeList.Count; i++) {
            if (currentpickUpElementInfo.pickUpTypeList [i].pickUpObject != null) {
                currentpickUpElementInfo.pickUpTypeList [i].Name = currentpickUpElementInfo.pickUpTypeList [i].pickUpObject.name;
            }
        }
    }

    public void addNewPickup ()
    {
        pickUpElementInfo newPickupElementInfo = new pickUpElementInfo ();
        newPickupElementInfo.pickUpType = "New Pickup Type";
        mainPickUpList.Add (newPickupElementInfo);

        udpateComponent ();
    }

    public void addNewPickupToList (int index)
    {
        pickUpElementInfo.pickUpTypeElementInfo newPickupTypeElementInfo = new pickUpElementInfo.pickUpTypeElementInfo ();
        newPickupTypeElementInfo.Name = "New Pickup";
        mainPickUpList [index].pickUpTypeList.Add (newPickupTypeElementInfo);

        udpateComponent ();
    }

    public void udpateComponent ()
    {
        GKC_Utils.updateComponent (this);

        GKC_Utils.updateDirtyScene ("Update Pickup Manager", gameObject);
    }
}