using System;
using System.Collections;
using System.Collections.Generic;
using System.Linq;
using Cinemachine;
using UnityEngine;
using UnityEngine.Tilemaps;
using UnityEngine.UI;


public class GameManagerScript : MonoBehaviour {
    CinemachineBrain camBrain;

    RoundManager roundManager;

    [SerializeField] List<GameObject> enemies;
    [SerializeField] List<GameObject> humans;
    [SerializeField] GameObject initPanel;
    [SerializeField] GameObject initCreaturePanel;

    [SerializeField] Grid grid;
    [SerializeField] Tilemap tileMap;

    List<Creature> combatants = new();

    static GameManagerScript instance;
    public static GameManagerScript GetInstance() {
        return instance;
    }

    private void Start() {
        instance = this;
        combatants.AddRange(enemies.Select(e => e.GetComponent<Creature>()));
        combatants.AddRange(humans.Select(h => h.GetComponent<Creature>()));
    }

    private void Awake() {
        if (camBrain == null) {
            camBrain = Camera.main.GetComponent<CinemachineBrain>();
        }

        if (roundManager == null) {
            roundManager = GameObject.Find("RoundManager").GetComponent<RoundManager>();
        }
    }

    public CinemachineVirtualCamera GetActiveCamera() {
        CinemachineVirtualCamera cam = camBrain.ActiveVirtualCamera as CinemachineVirtualCamera;

        return cam;
    }

    internal void RollInitiative() {
        combatants.ForEach(creature => {
            creature.RollInit();
        });

        combatants.Sort((x, y) => x.GetInit().CompareTo(y.GetInit()));
        ClearInitPanel();
        BuildInitPanel();
        roundManager.StartFirstRound(combatants);
    }

    private void ClearInitPanel() {
        int children = initPanel.transform.childCount;
        for (int i = children - 1; i >= 0; i--) {
            GameObject.Destroy(initPanel.transform.GetChild(i).gameObject);
        }
    }

    public void ShowInitPanel(Boolean show) {
        initPanel.SetActive(show);
    }

    internal void BuildInitPanel() {
        initPanel.SetActive(true);
        combatants.ForEach(c => {
            GameObject creturePanel = GameObject.Instantiate(initCreaturePanel, Vector3.zero, Quaternion.identity);
            creturePanel.transform.localScale = new Vector3(1, 1, 1);
            creturePanel.transform.SetParent(initPanel.transform);
            creturePanel.GetComponent<InitCreaturePanelScript>().SetImage(c.GetComponent<Creature>().GetSprite());

            Debug.Log(c.name + " init: " + c.GetComponent<Creature>().GetInit() + " Dex " + c.GetComponent<Creature>().Dex + " pos: " + grid.WorldToCell(c.transform.localPosition));

            c.SetPositionInGrid(grid.WorldToCell(c.transform.localPosition));
        });

    }

    public List<Creature> GetCombatants() {
        return combatants;
    }
}