using System;
using System.Collections;
using System.Collections.Generic;
using Firebase.Extensions;
using Firebase.Storage;
using TMPro;
using UnityEngine;
using UnityEngine.Networking;
using UnityEngine.UI;

public class PropositionFrame : MonoBehaviour
{
    public RawImage picture;
    public GameObject voterStickerPrefab;
    public TextMeshProUGUI playerName;
    public Transform playerGrid;

    private List<Player> currentVoters = new List<Player>();
    private Proposition proposition;

    public void Initialize(Proposition _proposition)
    {
        Debug.Log($"Initializing {_proposition.owner}'s proposition", this);
        proposition = _proposition;
        playerName.text = proposition.owner.name;

        if (!string.IsNullOrEmpty(proposition.photoUrl))
            DisplayPicture(proposition.photoUrl);
    }

    private void DisplayPicture(string _url)
    {
        Debug.Log($"Downloading {_url}");

        StorageReference imageRef = FirebaseStorage.DefaultInstance.GetReferenceFromUrl(_url);
        imageRef.GetDownloadUrlAsync().ContinueWithOnMainThread(task =>
        {
            if (task.IsFaulted || task.IsCanceled)
            {
                Debug.LogException(task.Exception);
            }
            else
            {
                Debug.Log("Download URL: " + task.Result);
                StartCoroutine(DownloadImage(task.Result.AbsolutePath, _texture =>
                {
                    Debug.Log("Set texture in the raw image");
                    picture.texture = _texture;
                }));
            }
        });
    }

    private IEnumerator DownloadImage(string _url, Action<Texture> callback_OnTextureDownloaded)
    {
        UnityWebRequest request = UnityWebRequestTexture.GetTexture(_url);
        yield return request.SendWebRequest();

        if (request.result != UnityWebRequest.Result.Success)
        {
            Debug.LogError(request.error);
        }
        else
        {
            callback_OnTextureDownloaded?.Invoke(((DownloadHandlerTexture)request.downloadHandler).texture);
        }
    }

    public void UpdateVoters(List<Player> _newVoters)
    {
        Debug.Log($"There are some new voters for {proposition.owner}'s proposition", this);
        foreach (Player p in _newVoters)
        {
            if (!currentVoters.Contains(p))
            {
                currentVoters.Add(p);
                VoterSticker sticker = Instantiate(voterStickerPrefab, playerGrid).GetComponent<VoterSticker>();
                sticker.playerNameLabel.text = p.name;
                Debug.Log($"{p.name} has just voted for {proposition.owner.name}'s proposition.");
            }
        }
    }
}