using System;
using System.Collections;
using Mirror;
using UnityEngine;
using UnityEngine.Networking;
using UnityEngine.UI;
using DG.Tweening;

public class GameTutorialManager : MonoBehaviour
{
    public const string CpuOpponentName = "CPU";
    public const string DefaultGameSceneName = "Game";

    public static bool tutorialModeTrigger = false;
    public bool isTutorial = false;
    public static bool tutorialModeEnabled = false;

    public AiBotController aiController;

    [Header("UI")]
    public CanvasGroup intro_shoot;
    public CanvasGroup intro_goal;
    public float introFadeDuration = 0.3f;

    Button _introShootButton;
    Button _introGoalButton;
    bool _shootIntroDismissed;
    bool _goalIntroDismissed;
    bool _introVisible;

    void Awake()
    {
#if UNITY_SERVER
        tutorialModeEnabled = false;
        tutorialModeTrigger = false;
        HideIntroImmediate(intro_shoot);
        HideIntroImmediate(intro_goal);
        enabled = false;
        return;
#endif

        tutorialModeEnabled = false;
        if (isTutorial)
            tutorialModeTrigger = true;

        if (tutorialModeTrigger)
            tutorialModeEnabled = true;

        tutorialModeTrigger = false;

        if (!tutorialModeEnabled)
        {
            HideIntroImmediate(intro_shoot);
            HideIntroImmediate(intro_goal);
        }
    }

    void OnEnable()
    {
        GameManager.OnTeamChanged += OnTeamChanged;
    }

    void OnDisable()
    {
        GameManager.OnTeamChanged -= OnTeamChanged;
    }

    void OnDestroy()
    {
        if (tutorialModeEnabled)
            tutorialModeEnabled = false;

        if (intro_shoot != null)
            DOTween.Kill(intro_shoot);
        if (intro_goal != null)
            DOTween.Kill(intro_goal);
    }

    void Start()
    {
        if (tutorialModeEnabled)
        {
            NetManager.StopNetworkingForSceneChange();

            NetworkManager.singleton.networkAddress = "localhost";
            NetworkManager.singleton.StartHost();

            WireIntroButtons();
            HideIntroImmediate(intro_goal);
            HideIntroImmediate(intro_shoot);

            StartCoroutine(SetupAiWhenReady());
            StartCoroutine(ShowShootIntroWhenReady());
        }
    }

    void WireIntroButtons()
    {
        if (intro_shoot != null)
            _introShootButton = intro_shoot.GetComponentInChildren<Button>(true);
        if (intro_goal != null)
            _introGoalButton = intro_goal.GetComponentInChildren<Button>(true);

        if (_introShootButton != null)
            _introShootButton.onClick.AddListener(OnShootIntroDismissed);
        if (_introGoalButton != null)
            _introGoalButton.onClick.AddListener(OnGoalIntroDismissed);
    }

    IEnumerator ShowShootIntroWhenReady()
    {
        while (GameManager.instance == null || !GameManager.instance.gameStarted)
            yield return null;

        while (NetPlayer.localPlayer == null)
            yield return null;

        ShowIntro(intro_shoot);
    }

    void OnTeamChanged(Team team)
    {
        if (!tutorialModeEnabled || _introVisible)
            return;
        if (team != GetPlayerTeam())
            return;
        if (!_shootIntroDismissed || _goalIntroDismissed)
            return;

        ShowIntro(intro_goal);
    }

    void OnShootIntroDismissed()
    {
        if (_shootIntroDismissed)
            return;

        _shootIntroDismissed = true;
        DismissIntro(intro_shoot);
    }

    void OnGoalIntroDismissed()
    {
        if (_goalIntroDismissed)
            return;

        _goalIntroDismissed = true;
        DismissIntro(intro_goal);
    }

    void ShowIntro(CanvasGroup group)
    {
        if (group == null)
            return;

        EnsureTutorialCanvasVisible(group);
        DOTween.Kill(group);

        group.gameObject.SetActive(true);
        group.alpha = 1f;
        group.interactable = true;
        group.blocksRaycasts = true;

        _introVisible = true;
        if (GameManager.instance != null)
            GameManager.instance.SetTurnTimerPaused(true);
    }

    void DismissIntro(CanvasGroup group)
    {
        if (group == null)
            return;

        group.interactable = false;
        group.blocksRaycasts = false;

        DOTween.Kill(group);
        group.DOFade(0f, introFadeDuration)
            .SetEase(Ease.InOutSine)
            .OnComplete(() =>
            {
                group.gameObject.SetActive(false);
                _introVisible = false;
                if (GameManager.instance != null)
                    GameManager.instance.SetTurnTimerPaused(false);
            });
    }

    static void HideIntroImmediate(CanvasGroup group)
    {
        if (group == null)
            return;

        DOTween.Kill(group);
        group.alpha = 0f;
        group.interactable = false;
        group.blocksRaycasts = false;
        group.gameObject.SetActive(false);
    }

    static void EnsureTutorialCanvasVisible(CanvasGroup group)
    {
        Transform root = group.transform.root;
        if (root.localScale == Vector3.zero)
            root.localScale = Vector3.one;
    }

    static Team GetPlayerTeam()
    {
        if (NetPlayer.localPlayer != null)
            return NetPlayer.localPlayer.myTeam;
        return GameManager.MyTeam;
    }

    /// <summary>Call from the main menu before loading the game scene.</summary>
    public static void PrepareLaunch(MatchmadePlayer myPlayer, MatchmadePlayer cpuPlayer, Team myTeam = Team.Red)
    {
        LoginManager.ClearMatchYourTeam();
        GameManager.MyTeam = myTeam;
        GameManager.MatchRcPrizeCoins = 0;
        GameManager.ConfigureDedicatedMatchReporting(0);

        if (myTeam == Team.Red)
        {
            GameManager.RedPlayer = myPlayer;
            GameManager.BluePlayer = cpuPlayer;
        }
        else
        {
            GameManager.RedPlayer = cpuPlayer;
            GameManager.BluePlayer = myPlayer;
        }

        LevelLoadManager.myPlayer = myPlayer;
        LevelLoadManager.opponentPlayer = cpuPlayer;
        if (LevelLoadManager.instance != null)
            LevelLoadManager.instance.SetupMatchMade(myTeam, myPlayer, cpuPlayer, "0 RC");

        tutorialModeTrigger = true;
    }

    public static MatchmadePlayer CreateCpuOpponent()
    {
        return new MatchmadePlayer
        {
            Name = CpuOpponentName,
            l10_wins = 10,
            l10_losses = 0
        };
    }

    public static MatchmadePlayer CreateMyPlayerFromUser(UserData user)
    {
        return new MatchmadePlayer
        {
            Name = user.username,
            UserId = user.id,
            rc = user.rc
        };
    }

    public static IEnumerator CoFetchPlayerL10(MatchmadePlayer player)
    {
        if (player == null || player.UserId <= 0)
            yield break;

        string baseUrl = (GameManager.DedicatedInternalApiBase ?? LoginManager.AuthBaseUrl ?? "").TrimEnd('/');
        if (string.IsNullOrEmpty(baseUrl))
            yield break;

        string url = baseUrl + "/players/" + player.UserId + "/l10";
        using (var req = UnityWebRequest.Get(url))
        {
            yield return req.SendWebRequest();
            if (req.result != UnityWebRequest.Result.Success)
            {
                Logger.Log("Tutorial L10 fetch failed: " + req.error + " " + url);
                yield break;
            }

            var resp = JsonUtility.FromJson<PlayerL10Response>(req.downloadHandler.text);
            if (resp != null && resp.ok)
            {
                player.l10_wins = resp.l10_wins;
                player.l10_losses = resp.l10_losses;
            }
        }
    }

    [Serializable]
    class PlayerL10Response
    {
        public bool ok;
        public int player_id;
        public int l10_wins;
        public int l10_losses;
    }

    IEnumerator SetupAiWhenReady()
    {
        float timeout = 5f;
        while (NetPlayer.localPlayer == null && timeout > 0f)
        {
            timeout -= Time.deltaTime;
            yield return null;
        }

        Team playerTeam = NetPlayer.localPlayer != null
            ? NetPlayer.localPlayer.myTeam
            : GameManager.MyTeam;
        Team opponentTeam = playerTeam == Team.Red ? Team.Blue : Team.Red;

        if (GameManager.instance.SelectedTeam != playerTeam)
            GameManager.instance.SwitchTeams();

        aiController.Setup(opponentTeam);
    }
}