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

public class DialoguePanelController : MonoBehaviour {
    [SerializeField] List<Transform> characterCGSpots;

    // Fill this with CharacterCG Prefab Variants according to
    // the poses in the order of the NPCCG Enum.
    [SerializeField] List<GameObject> characterCGIndex;

    List<GameObject> characterCGs = new List<GameObject>() { null, null, null, null };

    private List<int> currentCGIndices = new List<int>() { -1, -1, -1, -1 };

    private static Dictionary<ItemSubType, int> gloveIndex =
        new Dictionary<ItemSubType, int>() {
            { ItemSubType.NONE, -1 },
            { ItemSubType.ARCHER_GLOVES, 0 },
            { ItemSubType.BANDIT_GLOVES, 1 },
        };
    private static Dictionary<ItemSubType, int> bowIndex =
        new Dictionary<ItemSubType, int>() {
            { ItemSubType.NONE, 0 },
            { ItemSubType.ARCHER_BOW, 1 },
            { ItemSubType.BANDIT_BOW, 2 },
            { ItemSubType.FAIRY_BOW, 3 },
            { ItemSubType.ELITE_BOW, 4 },
        };
    private static Dictionary<ItemSubType, int> outfitIndex =
        new Dictionary<ItemSubType, int>() {
            { ItemSubType.NONE, 0 },
            { ItemSubType.ARCHER_TUNIC, 1 },
            { ItemSubType.BANDIT_OUTFIT, 2 },
            { ItemSubType.FAIRY_DRESS, 3 },
            { ItemSubType.ELITE_DRESS, 4 },
        };
    private static Dictionary<ItemSubType, int> shoeIndex =
        new Dictionary<ItemSubType, int>() {
            { ItemSubType.NONE, -1 },
            { ItemSubType.ARCHER_BOOTS, 0 },
            { ItemSubType.BANDIT_BOOTS, 1 },
            { ItemSubType.FAIRY_SANDALS, 2 },
            { ItemSubType.ELITE_BOOTS, 3 },
        };
    private static Dictionary<ItemSubType, int> outfitBackIndex =
        new Dictionary<ItemSubType, int>() {
            { ItemSubType.NONE, -1 },
            { ItemSubType.ARCHER_TUNIC, -1 },
            { ItemSubType.BANDIT_OUTFIT, -1 },
            { ItemSubType.FAIRY_DRESS, -1 },
            { ItemSubType.ELITE_DRESS, 0 },
        };

    public void Reset() {
        for (int i = 0; i < characterCGs.Count; i++) {
            if (characterCGs[i] != null) {
                Destroy(characterCGs[i]);
                characterCGs[i] = null;
            }
        }
        currentCGIndices = new List<int>() { -1, -1, -1, -1 };
    }

    public ItemSubType GetSubType(ItemType itemType) {
        if (!State.state.inventory.equipped.ContainsKey(itemType)) {
            return ItemSubType.NONE;
        }
        Item item = ((Item)State.state.inventory.equipped[itemType]);
        return (item != null) ? item.subType : ItemSubType.NONE;
    }

    public void SetTalkingPosition(int talkingSpot) {
        for (int i = 0; i < characterCGs.Count; i++) {
            if (characterCGs[i] != null) {
                characterCGs[i].GetComponent<CharacterCGController>().SetIsTalking(i == talkingSpot);
            }
        }
    }

    public void ShowCG(int location, NpcCG cgIndex, int expressionIndex) {
        if (cgIndex == NpcCG.NONE) {
            characterCGs[location].GetComponent<CharacterCGController>().SetCGLayers(null);
            return;
        }
        int index = (int)cgIndex - 1;

        ItemSubType shoesSubType = GetSubType(ItemType.EQUIP_SHOES);
        ItemSubType gloveSubType = GetSubType(ItemType.EQUIP_GLOVES);
        ItemSubType bowSubType = GetSubType(ItemType.EQUIP_BOW);
        ItemSubType outfitSubType = GetSubType(ItemType.EQUIP_OVERALL);


        List<int> indexList;
        if (cgIndex == NpcCG.AIRA_POSE1) {
            indexList = new List<int>() {
                /*BodyUnder=*/0,
                /*GloveUnder=*/gloveIndex[gloveSubType],
                /*Bow=*/bowIndex[bowSubType],
                /*BodyUpper=*/0,
                /*Shoes=*/shoeIndex[shoesSubType],
                /*Outfit=*/outfitIndex[outfitSubType],
                /*GloveOver=*/gloveIndex[gloveSubType],
                /*Face=*/ expressionIndex,
                /*FrontHair=*/0,
                /*outfitBack=*/outfitBackIndex[outfitSubType]};
        }
        else if (cgIndex == NpcCG.AIRA_POSE2) {
            indexList = new List<int>() {
                /*Body=*/0,
                /*Shoes=*/shoeIndex[shoesSubType],
                /*Outfit=*/outfitIndex[outfitSubType],
                /*Bow=*/bowIndex[bowSubType],
                /*Gloves=*/gloveIndex[gloveSubType],
                /*Face=*/ expressionIndex,
                /*Hair=*/0,
                /*OutfitBack=*/outfitBackIndex[outfitSubType]};
        } else {
            indexList = new List<int>() { 0, expressionIndex };
        }

        // Re-spawn the object in that slot if it's not already associated with the right CG.
        if (currentCGIndices[location] != index) {
            currentCGIndices[location] = index;
            if (characterCGs[location] != null) {
                Destroy(characterCGs[location]);
            }
            characterCGs[location] = Instantiate(characterCGIndex[index]);
        }
        characterCGs[location].transform.SetParent(transform);
        characterCGs[location].transform.position = characterCGSpots[location].transform.position;
        characterCGs[location].transform.localScale = characterCGSpots[location].transform.localScale;
        characterCGs[location].GetComponent<CharacterCGController>()
            .SetCGLayers(indexList);
    }
}