using Newtonsoft.Json.Linq;
using System.Collections;
using System.Collections.Generic;
using System.Linq;
using UnityEngine;
using UnityEngine.EventSystems;
using UnityEngine.UI;

namespace Assets.Scripts
{
    public class Inventory : MonoBehaviour
    {
        public GameObject head;
        public GameObject chest;
        public GameObject shoulders;
        public GameObject feet;
        public GameObject ring;
        public GameObject amulet;
        public GameObject leftHand;
        public GameObject rightHand;
        public GameObject dragImage;
        public GameObject itemDisplay;

        public GameObject[] bags;
        public GameObject[] slots;

        Dictionary<string, int> statBoost;

        public int currentBag = -1;

        GameObject startDrag;
        TooltipHandler tooltip;
        

        // Start is called before the first frame update
        void Start()
        {
            createStatBoost();
            tooltip = GameObject.Find("TooltipHandler").GetComponent<TooltipHandler>();
            itemDisplay.transform.localScale = new Vector3(0,0,0);
            changeCurrentBag(0);
        }

        // Update is called once per frame
        void Update()
        {
            checkInventoryColors();
            checkEquipColors();
        }

        private void createStatBoost()
        {
            if (statBoost == null)
            {
                statBoost = new Dictionary<string, int>();
                statBoost.Add("HP", 0);
                statBoost.Add("MP", 0);
                statBoost.Add("HPR", 0);
                statBoost.Add("MPR", 0);
                statBoost.Add("STR", 0);
                statBoost.Add("DEX", 0);
                statBoost.Add("INT", 0);
                statBoost.Add("LCK", 0);
            }
        }

        public void addItem(Item item)
        {
            if (item != null)
            {
                bool itemAdded = false;
                for (int i = 0; i < bags.Length; i++)
                {
                    for (int j = 0; j < slots.Length; j++)
                    {
                        if (slots[j].GetComponent<InventorySlot>().getItem(i) == null)
                        {
                            slots[j].GetComponent<InventorySlot>().setItem(item, i);
                            itemAdded = true;
                            slots[j].GetComponent<RawImage>().color = item.rarityColor;
                            slots[j].GetComponent<RawImage>().texture = item.image;
                            break;
                        }
                    }
                    if (itemAdded)
                    {
                        GameObject.Find("UIHandler").GetComponent<UIHandler>().showMessage("SUCCESS;You got an item!");
                        GameObject.Find("QuestLog").GetComponent<QuestLog>().updateQuests("collect", item, 1);
                        SteamWorksHandler.getItemAchievement(item);
                        break;
                    }
                }
                if (!itemAdded)
                {
                    GameObject.Find("UIHandler").GetComponent<UIHandler>().showMessage("ERROR;No inventory space left.");
                }
            }
        }

        public void changeCurrentBag(int index)
        {
            if (currentBag != -1)
            {
                bags[currentBag].transform.Find("Selected").GetComponent<RawImage>().color = Color.white;
            }
            currentBag = index;
            bags[currentBag].transform.Find("Selected").GetComponent<RawImage>().color = Color.cyan;
            checkInventoryColors();
            foreach(GameObject slot in slots)
            {
                slot.GetComponent<InventorySlot>().updateCurrentBag(currentBag);
            }
        }

        private void checkInventoryColors()
        {
            Item item;
            for (int i = 0; i < slots.Length; i++)
            {
                item = slots[i].GetComponent<InventorySlot>().getItem(currentBag);
                if (item != null)
                {
                    slots[i].GetComponent<RawImage>().color = item.rarityColor;
                    slots[i].GetComponent<RawImage>().texture = item.image;
                }
                else
                {
                    slots[i].GetComponent<RawImage>().color = Color.white;
                    slots[i].GetComponent<RawImage>().texture = null;
                }
            }
        }

        private void checkEquipColors()
        {
            GameObject slot = head;
            Item item;
            for (int i = 0; i < 8; i++)
            {
                switch (i)
                {
                    case 0:
                        slot = head;
                        break;
                    case 1:
                        slot = rightHand;
                        break;
                    case 2:
                        slot = leftHand;
                        break;
                    case 3:
                        slot = amulet;
                        break;
                    case 4:
                        slot = feet;
                        break;
                    case 5:
                        slot = shoulders;
                        break;
                    case 6:
                        slot = chest;
                        break;
                    case 7:
                        slot = ring;
                        break;
                }
                item = slot.GetComponent<InventorySlot>().getEquip();
                if (item != null)
                {
                    slot.GetComponent<RawImage>().color = item.rarityColor;
                    slot.GetComponent<RawImage>().texture = item.image;
                }
                else
                {
                    slot.GetComponent<RawImage>().color = Color.white;
                }
            }    
        }

        public void setDrag(GameObject slot)
        {
            startDrag = slot;
        }

        public GameObject getDrag()
        {
            return startDrag;
        }

        public Item getEquip(ItemPlace place)
        {
            switch (place)
            {
                case ItemPlace.LEFTHAND:
                    return leftHand.GetComponent<InventorySlot>().getEquip();
                case ItemPlace.RIGHTHAND:
                    return rightHand.GetComponent<InventorySlot>().getEquip();
                case ItemPlace.HELMET:
                    return head.GetComponent<InventorySlot>().getEquip();
                case ItemPlace.BOOTS:
                    return feet.GetComponent<InventorySlot>().getEquip();
                case ItemPlace.SHOULDER:
                    return shoulders.GetComponent<InventorySlot>().getEquip();
                case ItemPlace.AMULET:
                    return amulet.GetComponent<InventorySlot>().getEquip();
                case ItemPlace.RING:
                    return ring.GetComponent<InventorySlot>().getEquip();
                case ItemPlace.ARMOR:
                    return chest.GetComponent<InventorySlot>().getEquip();
                default:
                    return null;
            }
        }

        public void calculateStatBoost(Dictionary<string, int> attributes, bool isAddition)
        {
            foreach (string key in attributes.Keys)
            {
                if (isAddition)
                {
                    statBoost[key] = statBoost[key] + attributes[key];
                }
                else
                {
                    statBoost[key] = statBoost[key] - attributes[key];
                }
            }
        }

        public Dictionary<string, int> getEquipmentBonus()
        {
            createStatBoost();
            return statBoost;
        }

        public string saveGame()
        {
            string result = "";
            int counter = 0;
            GameObject equip = head;
            string slotname = "";
            result = result + "\"equipment\": {\r\n";
            for (int i = 0; i < 8; i++)
            {
                switch (i)
                {
                    case 0:
                        equip = head;
                        slotname = "head";
                        break;
                    case 1:
                        equip = rightHand;
                        slotname = "rightHand";
                        break;
                    case 2:
                        equip = leftHand;
                        slotname = "leftHand";
                        break;
                    case 3:
                        equip = amulet;
                        slotname = "amulet";
                        break;
                    case 4:
                        equip = feet;
                        slotname = "feet";
                        break;
                    case 5:
                        equip = shoulders;
                        slotname = "shoulders";
                        break;
                    case 6:
                        equip = chest;
                        slotname = "chest";
                        break;
                    case 7:
                        equip = ring;
                        slotname = "ring";
                        break;
                }
                if (equip.GetComponent<InventorySlot>().getEquip() != null)
                {
                    result = result + "\""+slotname+"\": {\r\n";
                    result = result + equip.GetComponent<InventorySlot>().saveGame();
                    result = result + "\r\n}";
                }
                else
                {
                    result = result + "\"" + slotname + "\": \"empty\"";
                }
                if (i != 7)
                {
                    result = result + ",\r\n";
                }
            }
            result = result + "\r\n},\r\n";
            result = result + "\"bags\": {\r\n";
            foreach (GameObject slot in slots)
            {
                result = result + "\"slot" + counter + "\": {\r\n";
                result = result + slot.GetComponent<InventorySlot>().saveGame();
                result = result + "\r\n}";
                if (counter < slots.Length - 1)
                {
                    result = result + ",\r\n";
                }
                counter++;
            }
            result = result + "\r\n}";
            return result;
        }

        public void loadInventory(JToken json)
        {
            loadEquipment(json["equipment"]);
            var jsonData = JObject.Parse(json["bags"].ToString()).Children();
            List<JToken> tokens = jsonData.Children().ToList();
            int counter = 0;
            foreach (JToken slot in tokens)
            {
                if (slot["bag1"].ToString() != "empty")
                {
                    slots[counter].GetComponent<InventorySlot>().loadSlot(slot["bag1"], 0);
                }
                if (slot["bag2"].ToString() != "empty")
                {
                    slots[counter].GetComponent<InventorySlot>().loadSlot(slot["bag2"], 1);
                }
                if (slot["bag3"].ToString() != "empty")
                {
                    slots[counter].GetComponent<InventorySlot>().loadSlot(slot["bag3"], 2);
                }
                counter++;
            }
        }

        private void loadEquipment(JToken slot)
        {
            GameObject equip = head;
            string slotname = "";
            for (int i = 0; i < 8; i++)
            {
                switch (i)
                {
                    case 0:
                        equip = head;
                        slotname = "head";
                        break;
                    case 1:
                        equip = rightHand;
                        slotname = "rightHand";
                        break;
                    case 2:
                        equip = leftHand;
                        slotname = "leftHand";
                        break;
                    case 3:
                        equip = amulet;
                        slotname = "amulet";
                        break;
                    case 4:
                        equip = feet;
                        slotname = "feet";
                        break;
                    case 5:
                        equip = shoulders;
                        slotname = "shoulders";
                        break;
                    case 6:
                        equip = chest;
                        slotname = "chest";
                        break;
                    case 7:
                        equip = ring;
                        slotname = "ring";
                        break;
                }
                if (slot[slotname].ToString() != "empty")
                {
                    equip.GetComponent<InventorySlot>().loadSlot(slot[slotname], -1);
                    createStatBoost();
                    calculateStatBoost(equip.GetComponent<InventorySlot>().getEquip().getAttributes(), true);
                }
            }
        }
    }
}