using ExitGames.Client.Photon;
using Photon.Pun;
using Photon.Realtime;
using System.Collections;
using System.Collections.Generic;
using UnityEngine;
using UnityEngine.SceneManagement;

public class GameManager : MonoBehaviourPunCallbacks, IOnEventCallback
{
    
    public Transform SpawnPositionsParent;
    private Transform[] SpawnPositions;

    public LootItemScriptableObject[] loots;
    public Transform LootSpawnPointsParent;
    LootSpawner[] LootSpawnPoints;

    [Header("Default Loots")]
    public List<InventoryEntry> DeathmatchDefaultInventory;

    private double m_startTime;
    public int DeathmatchRoundLength = 600;
    public int DeathmtachRoundCountdown = 5;
    public int TDM_MinPlayers = 4;
    public double StartTime{
        get{
            return m_startTime;
        }
        set{
            m_startTime = value;
            UIManager.instance.SetTimer(value, DeathmatchRoundLength);
        }
    }

    bool testingMode =false;
    private void Awake()
    {
        if(!PhotonNetwork.IsConnected){
            testingMode=true;
            PhotonNetwork.ConnectUsingSettings();
        }
        instance = this;

        LootSpawnPoints = LootSpawnPointsParent.GetComponentsInChildren<LootSpawner>();
        SpawnPositions = new Transform[SpawnPositionsParent.childCount];

        for (int i=0; i < SpawnPositionsParent.childCount; i++)
        {
            SpawnPositions[i] = SpawnPositionsParent.GetChild(i);
        }
    }

    //Statics
    public static List<string> partyMembers = new List<string>();
    public static string partyId;
    public static string RoomName;
    public static bool isInit =false;
    public static string desiredGameMode = GameModes.Deathmatch.ToString();
    public static GameManager instance;
    public static PlayerController localPlayer;

    void ResetStatics(){
        isInit=false;
        instance=null;
        localPlayer= null;
    }

    void Start()
    {
        Photon.Realtime.RoomOptions options = new Photon.Realtime.RoomOptions() { IsOpen = true, IsVisible=true };
        PhotonNetwork.JoinOrCreateRoom(RoomName, options, Photon.Realtime.TypedLobby.Default);
    }

    public override void OnConnectedToMaster()
    {
        base.OnConnectedToMaster();
        if(testingMode){
            PhotonNetwork.JoinOrCreateRoom("TEST",new RoomOptions(){IsOpen= true, IsVisible=true}, TypedLobby.Default);
        }
    }

    List<GameObject> m_loots = new List<GameObject>();
    public override void OnJoinedRoom()
    {
        base.OnJoinedRoom();
        StartCoroutine(KickstartGame());
        //
        UIManager.instance.loadingPanel.SetActive(false);
    }

    void SpawnLoots(){
            foreach(LootSpawner spawnPoint in LootSpawnPoints)
            {
                float totalLuck = 0;
                Dictionary<LootGroup, float> startLuck = new Dictionary<LootGroup, float>();
                foreach(LootGroup group in spawnPoint.groups)
                {
                    startLuck.Add(group, totalLuck);
                    totalLuck += group.chance;
                }

                float luck = Random.Range(0f, totalLuck);
                float a = 0;

                foreach (KeyValuePair<LootGroup, float> pair in startLuck)
                {
                    if(luck > pair.Value && luck < pair.Value + pair.Key.chance)
                    {
                        for(int i=0; i < pair.Key.loots.Count; i++)
                        {
                            a += Mathf.PI * 0.2f;
                           // float a = Mathf.Sin(((float)i / (float)pair.Key.loots.Count) * (Mathf.PI));
                            float x = Mathf.Sin(a);
                            float y = Mathf.Cos(a);

                            Vector3 point = spawnPoint.transform.position + new Vector3(x, 0, y);

                            m_loots.Add(PhotonNetwork.InstantiateRoomObject(pair.Key.loots[i].spawnableName, point, Quaternion.identity));

                        }
                        break;
                    }
                }

            }
    }

    public void SpawnPickup(string spawnableName, Vector3 point, int count =1){
        if(PhotonNetwork.IsMasterClient){
            _spawnPickup(spawnableName, point, count);
        }else{
            photonView.RPC("RpcSpawnPickup", RpcTarget.MasterClient, spawnableName, count, point);
        }
    }

    [PunRPC]
    void RpcSpawnPickup(string spawnableName, Vector3 point, int count=1){
        if(PhotonNetwork.IsMasterClient){
            _spawnPickup(spawnableName, point,count);
        }
    }

    void _spawnPickup(string spawnableName, Vector3 point, int count = 1){
        GameObject loot = PhotonNetwork.InstantiateRoomObject(spawnableName, point, Quaternion.identity);
        loot.GetComponent<PickupItem>().SetCount(count);
        m_loots.Add(loot);
    }

    // Update is called once per frame
    float timer => DeathmatchRoundLength - (float)(PhotonNetwork.Time -StartTime);

    bool isFinished =false;
    void Update()
    {
        if(!isInit){return;}

        if(PhotonNetwork.IsMasterClient){
            if(timer <=0 ){
                //Game Over
                if(!isFinished){
                    isFinished=true;
                    FinishRound();
                }
            }
        }
    }

    public void FinishRound(){

        if(desiredGameMode == GameModes.Deathmatch.ToString()){
            FinishDeathmatch();
        }else if(desiredGameMode == GameModes.TeamDeathmatch.ToString()){
            FinishTeamdeathmatch();
        }

        if(PhotonNetwork.IsMasterClient){
            StartCoroutine(Coroutine_SubmitSession());
        }
        Cursor.lockState = CursorLockMode.None;
        Cursor.visible = true;
        CameraFollow.Pause();

        PhotonNetwork.LeaveRoom();

        StartCoroutine(PlayAgain());
    }

    void FinishDeathmatch(){
        int position =0;
        for(position=0; position < Leaderboard.list.Length; position++){
            if(Leaderboard.list[position] == localPlayer.playerNetwork){
                break;
            }
        }
        if(desiredGameMode == GameModes.Deathmatch.ToString()){
            UIManager.ShowDeathmatchFinishScreen(position, Leaderboard.list[0].username);
        }
    }

    void FinishTeamdeathmatch(){
        KeyValuePair<string,int> winnerTeam = new KeyValuePair<string, int>("",0);
        foreach(KeyValuePair<string,int> team in LeaderboardTDM.unsortedTeamScores){
            if(team.Value > winnerTeam.Value){
                winnerTeam = team;
            }
        }

        if(desiredGameMode == GameModes.Deathmatch.ToString()){
            UIManager.ShowTDMFinishScreen(winnerTeam.Key);
        }
    }

    IEnumerator PlayAgain(){
        yield return new WaitForSeconds(10f);
        ResetStatics();
        SceneManager.LoadScene(SceneManager.GetActiveScene().buildIndex);
    }

    IEnumerator Coroutine_SubmitSession(){
        WWWForm form = new WWWForm();
        form.AddField("champion", Leaderboard.list[0].username);
        form.AddField("master_client", localPlayer.playerNetwork.username);
        form.AddField("match_code", PhotonNetwork.CurrentRoom.CustomProperties["uuid"].ToString());
        string playerList = "";
        foreach(PlayerNetwork player in Leaderboard.list){
            playerList += player.username +",";
        }
        form.AddField("players", playerList);

        WWW req= new WWW(UserDataManager.GetApiUrl("add_session"),form);
        yield return req;

        Debug.Log("Session record add response: " + req.text);

        WWWForm form2 = new WWWForm();
        form2.AddField("username", UserDataManager.instance.Username);

        WWW req2 = new WWW(UserDataManager.GetApiUrl("add_match_count"),form2);
        yield return req2;
    }


    public float minPlayerSpawnBetweenDist = 2;
    public Transform GetRandomSpawnPoint()
    {
        Transform farthest= SpawnPositions[0];

        PlayerNetwork[] players = FindObjectsOfType<PlayerNetwork>();
        //Debug.Log($"DistPlayer count {SpawnPositions.Length} : {players.Length}");
        for(int i =0; i < SpawnPositions.Length; i++){
            bool tooClose = false;
            for(int ii=0; ii < players.Length; ii++){
                float dist = Vector3.Distance(SpawnPositions[i].position, players[ii].transform.position);
               // Debug.Log("DistPlayer : " + dist);
                if(dist < minPlayerSpawnBetweenDist){
                    tooClose=true;
                    break;
                }
            }

            if(!tooClose){return SpawnPositions[i];}
        }

        return SpawnPositions[Random.Range(0, SpawnPositions.Length)];
    }
    ExitGames.Client.Photon.Hashtable CustomData;
    public int DeathmatchMinPlayerCount = 1;

    int customPlayerId=0;
    IEnumerator KickstartGame(){
        
        PlayerNetwork[] players = FindObjectsOfType<PlayerNetwork>();
     //   Debug.Log("Player cound :" +  players.Length);
        int iterations = 0;
        while(players.Length <=0){
            players = FindObjectsOfType<PlayerNetwork>();
//            Debug.Log("Player cound :" +  players.Length + ", iterations: "  + iterations);

            yield return new WaitForSeconds(0.1f);
            iterations++;

            if(iterations > 5){
                break;
            }
        }
        customPlayerId = players.Length;



        localPlayer = PhotonNetwork.Instantiate("Player", SpawnPositions[customPlayerId].position, Quaternion.identity).GetComponentInChildren<PlayerController>();
        // localPlayer.GetComponent<PlayerNetwork>().SetPartyName(partyName,partyId);
        UIManager.instance.RoundLength = DeathmatchRoundLength;
        localPlayer.GetComponent<PlayerNetwork>().AutoAssignParty();
        //Wait for Players
        if(PhotonNetwork.IsMasterClient){
            while(PhotonNetwork.CurrentRoom.PlayerCount <(desiredGameMode == GameModes.TeamDeathmatch.ToString() ? TDM_MinPlayers : DeathmatchMinPlayerCount)){
                yield return new WaitForSeconds(0.5f);
                UIManager.WaitingForPlayers();
            }

            ExitGames.Client.Photon.Hashtable customData= new ExitGames.Client.Photon.Hashtable();
            customData.Add("uuid", Helpers.GetRandomCode(8));

            PhotonNetwork.CurrentRoom.SetCustomProperties(customData);
        }else{
            UIManager.WaitingForPlayers();
        }

        if(PhotonNetwork.IsMasterClient){
            Debug.Log("Sending Timer Signal");
            RaiseEventOptions raiseEventOptions = new RaiseEventOptions{Receivers = ReceiverGroup.All};
            PhotonNetwork.RaiseEvent(GameStartEventCode, null, raiseEventOptions, SendOptions.SendReliable);
        }

    }

    

    public static LootItemScriptableObject GetLootByName(string spawnableName)
    {
        foreach(LootItemScriptableObject loot in instance.loots)
        {
            if(loot.spawnableName == spawnableName)
            {
                return loot;
            }
        }

        return null;
    }


    void OnEnable()
    {
        PhotonNetwork.AddCallbackTarget(this);
    }

    void OnDisable()
    {
        PhotonNetwork.RemoveCallbackTarget(this);
    }

    public const byte GameStartEventCode= 1;
    public const byte BeginGameModeCode= 2;
    public void OnEvent(EventData photonEvent)
    {
        byte eventCode = photonEvent.Code;

        if(eventCode == GameStartEventCode)
        {
            StartCoroutine(BeginStartTimer());
        }else if(eventCode == BeginGameModeCode){
            isInit=true;

            object[] customData = (object[])photonEvent.CustomData;

            StartTime = (double)customData[0];
            desiredGameMode = customData[1].ToString();

            Debug.Log("Starting game");

            if(PhotonNetwork.IsMasterClient){
                SpawnLoots();
                StartCoroutine(HideRoomIn((float)DeathmatchRoundLength /2f));
            }
            InventoryManager.ResetStocks();
            if(desiredGameMode == GameModes.Deathmatch.ToString() || desiredGameMode == GameModes.TeamDeathmatch.ToString()){
                InventoryManager.instance.GiveDefaultLoots(DeathmatchDefaultInventory);
            }

            localPlayer.transform.position = SpawnPositions[customPlayerId].position;

        }
    }

    IEnumerator HideRoomIn(float length){
        yield return new WaitForSeconds(length);   
        
        Debug.Log("Hiding this room");

        PhotonNetwork.CurrentRoom.IsOpen = false;
    }

    IEnumerator BeginStartTimer(){
        int t = DeathmtachRoundCountdown;
        while(t > 0){
            UIManager.SetStatusText("Starting game in " + t);

            yield return new WaitForSecondsRealtime(1);
            t--;
        }
        UIManager.SetStatusText("");
        if(PhotonNetwork.IsMasterClient){
            RaiseEventOptions raiseEventOptions = new RaiseEventOptions{Receivers = ReceiverGroup.All};
            PhotonNetwork.RaiseEvent(BeginGameModeCode, new object[]{PhotonNetwork.Time, desiredGameMode}, raiseEventOptions, SendOptions.SendReliable);
        }
    }
}

[System.Serializable]
public struct InventoryEntry{
    public LootItemScriptableObject loot;
    public int count;
}

public enum GameModes{
    Deathmatch,
    TeamDeathmatch,
    BattleRoyale
}