using System.Threading.Tasks;
using TMPro;
using UnityEngine;
using UnityEngine.Networking;
using UnityEngine.SceneManagement;

public class PresistentData : MonoBehaviour
{
    public static PresistentData Instance;
    private bool loadingDone = false;
    public static string latestVersion = null;
    public static string[] randomSplashes = null;

    private async void Awake()
    {
        if (Instance != null && Instance != this)
        {
            Destroy(gameObject);
            return;
        }

        Instance = this;
        DontDestroyOnLoad(gameObject);
        if (!loadingDone)
        {
            loadingDone = true;
            await GetLatestVersion();
            await GetRandomSplashes();
        }
    }

    private async static Task GetLatestVersion()
    {
        using UnityWebRequest request = UnityWebRequest.Get(Endpoints.LATEST_VERSION_ENDPOINT);
        request.SetRequestHeader("Requester", "BerryDashClient");
        request.SetRequestHeader("ClientVersion", Application.version);
        request.SetRequestHeader("ClientPlatform", Application.platform.ToString());
        await request.SendWebRequest();
        latestVersion = request.downloadHandler.text ?? "-1";
        if (
            SceneManager.GetActiveScene().name == "MainMenu" &&
            latestVersion != "-1" &&
            GameObject.Find("Canvas/LatestVersionText").TryGetComponent<TextMeshProUGUI>(out var text)
        )
        {
            text.text = "Latest: v" + latestVersion ?? "N/A";
            text.transform.GetChild(0).gameObject.SetActive(latestVersion != Application.version);
        }
    }

    private async static Task GetRandomSplashes()
    {
        using UnityWebRequest request = UnityWebRequest.Get(Endpoints.RANDOM_SPLASHES_ENDPOINT);
        request.SetRequestHeader("Requester", "BerryDashClient");
        request.SetRequestHeader("ClientVersion", Application.version);
        request.SetRequestHeader("ClientPlatform", Application.platform.ToString());
        await request.SendWebRequest();
        randomSplashes = request.downloadHandler.text.Split("\n") ?? null;
        if (
            SceneManager.GetActiveScene().name == "MainMenu" &&
            randomSplashes != null &&
            GameObject.Find("Canvas/SplashText").TryGetComponent<TextMeshProUGUI>(out var text)
        )
        {
            text.text = randomSplashes[Random.Range(0, randomSplashes.Length)];
        }
    }
}