using System;
using System.Collections;
using System.Collections.Generic;
using Newtonsoft.Json;
using Org.BouncyCastle.Asn1.Crmf;
using UnityEngine;
using UnityEngine.Events;
using UnityEngine.SocialPlatforms.Impl;

public class UserDataManager : MonoBehaviour
{
    public const int FRIENDS_REFRESH_RATE = 15;
    public const int INVITES_REFRESH_RATE = 7;
    public const string API_ENDPOINT = "https://vps.playpoolstudios.com/metahunt/api/";
    public static string GetApiUrl(string filename){
        return $"{API_ENDPOINT}{filename}.php";
    }
    public static UserDataManager instance;
    void Awake(){
        if(instance !=null){Destroy(this);return;}

        instance = this;
        DontDestroyOnLoad(gameObject);
    }
    public int UserID {get; private set;}
    public string Username {get; private set;}
    public string DisplayName{get; private set;}
    public int Kills{get; private set;}
    public int Deaths{get; private set;}

    // public List<string> FriendsRequests{get; private set;}
    public List<Friendship> Friends {get; private set;}
    public List<Friendship> FriendRequests {get; private set;}

    public List<Invite> Invites{get;private set;}

    public UnityAction OnFriendsUpdated = ()=>{};
    public UnityAction OnInvitesUpdated = ()=>{};

    float friend_refresh_timer = 0;
    float invite_refresh_timer =0;

    void Start(){
        friend_refresh_timer = FRIENDS_REFRESH_RATE;
        invite_refresh_timer = INVITES_REFRESH_RATE;
    }

    void Update(){
        if(friend_refresh_timer < FRIENDS_REFRESH_RATE){
            friend_refresh_timer +=Time.deltaTime;
        }else{
            RefreshFriends();
            friend_refresh_timer=0;
        }

        if(invite_refresh_timer < INVITES_REFRESH_RATE){
            invite_refresh_timer += Time.deltaTime;
        }else{
            RefreshInvites();
            invite_refresh_timer =0;
        }
    }
    public void RefreshInvites(){
        StartCoroutine(CoroutineGetInvites());
    }

    IEnumerator CoroutineGetInvites(){
        WWWForm form = new WWWForm();
        form.AddField("uid", UserID);

        WWW req = new WWW(GetApiUrl("get_invites"), form);
        yield return req;
        
        Debug.Log("Invite response:\n" + req.text);
        HandleInviteResponse(req.text);
    }

    void HandleInviteResponse(string response){
        Invites = new List<Invite>();
        try{
            Invites = JsonConvert.DeserializeObject<List<Invite>>(response);
        }catch(Exception e){
            Debug.LogError("Couldn't parse invites");
            Debug.LogError(e.ToString());
        }

        foreach(Invite invite in Invites){
            Debug.Log($"invite id {invite.id} is {DateTime.Now.Subtract(invite.time).TotalMinutes} old");
        }

        OnInvitesUpdated.Invoke();
    }

    public void RefreshFriends(){
        StartCoroutine(CoroutineGetFriends());
    }
    IEnumerator CoroutineGetFriends(){
        WWWForm form = new WWWForm();
        form.AddField("uid", UserID);

        // WWW requestsReq = new WWW(GetApiUrl("get_friend_requests"),form);
        // yield return requestsReq;

        // Debug.Log(requestsReq.text);
        // if(requestsReq.text == "0"){
        //     //no one is looking for you!
        //     FriendsRequests = new List<string>();
        // }else{
        //     FriendsRequests = JsonConvert.DeserializeObject<List<string>>(requestsReq.text);
        // }

        WWW friendsReq = new WWW(GetApiUrl("get_friends"),form);
        yield return friendsReq;
        Debug.Log(friendsReq.text);
        List<Friendship> allFriends = new List<Friendship>();
        if(friendsReq.text == "0"){

        }else{
            allFriends = JsonConvert.DeserializeObject<List<Friendship>>(friendsReq.text);
        }

        FriendRequests = new List<Friendship>();
        Friends = new List<Friendship>();
        foreach(Friendship friendship in allFriends){
            if(friendship.status == 0){
                FriendRequests.Add(friendship);
            }else if(friendship.status == 1){
                Friends.Add(friendship);
            }
        }

        OnFriendsUpdated.Invoke();
    }

    public void AcceptFriendRequest(int id, bool deny =false){
        foreach(Friendship request in FriendRequests){
            if(request.id == id){
                FriendRequests.Remove(request);
                OnFriendsUpdated.Invoke();

                break;
            }
        }
        StartCoroutine(CoroutineAcceptFriendRequest(id,deny));
    }

    IEnumerator CoroutineAcceptFriendRequest(int id,bool deny){
        WWWForm form = new WWWForm();
        form.AddField("id", id);

        WWW req = new WWW(GetApiUrl(deny?"block_friend_by_id" :"accept_friend_by_id"),form);
        yield return req;

        if(req.text == "0"){
            //SUCCESS
            RefreshFriends();
        }
    }

    public void Login(string username, string password, Action OnLoginSuccess, Action<Exception> OnLoginFailed){
        StartCoroutine(Coroutine_Login(username, password,OnLoginSuccess,OnLoginFailed));
    }

    private Dictionary<string,string> userJson = new Dictionary<string, string>();
    public string GetObjectFromUserJson(string key){
        if(userJson.ContainsKey(key)){
            return userJson[key];
        }else{
            return "";
        }
    }
    
    public IEnumerator Coroutine_Login(string username, string password, Action OnLoginSuccess, Action<Exception> OnLoginFailed){
        WWWForm form = new WWWForm();
        form.AddField("username",username);
        form.AddField("password", password);

        WWW req = new WWW(GetApiUrl("login"), form);
        yield return req;
        Debug.Log("LoginRes: " +req.text);

        try{
            Dictionary<string,string> jsonObj = JsonConvert.DeserializeObject<Dictionary<string,string>>(req.text);
            Username = jsonObj["username"];
            UserID = int.Parse(jsonObj["id"]);
            LoginManager.username = Username;
            DisplayName = jsonObj["display_name"];
            Kills = int.Parse(jsonObj["kills"]);
            Deaths = int.Parse(jsonObj["deaths"]);


            OnLoginSuccess.Invoke();
            userJson = jsonObj;

            RefreshFriends();
        }catch(Exception e){
            Debug.LogError("Login failed : " + e.GetType().ToString());
            Debug.LogError(e.Message);

            OnLoginFailed.Invoke(e);
        }
    }

    public void Register(string username, string password, Action OnRegisterSuccess, Action<string> OnRegisterFailed){
        StartCoroutine(Coroutine_Reg(username,password, OnRegisterSuccess, OnRegisterFailed));
    }

    public IEnumerator Coroutine_Reg(string username, string password, Action OnRegisterSuccess, Action<string> OnRegisterFailed){
        WWWForm form = new WWWForm();
        form.AddField("username",username);
        form.AddField("password", password);

        WWW req = new WWW(GetApiUrl("register"), form);
        Debug.Log(req.url);
        yield return req;
        Debug.Log("RegRes: " +req.text);

        if(req.text.Contains("0")){
            OnRegisterSuccess.Invoke();
        }else{
            OnRegisterFailed.Invoke(req.text);
        }
    }

    public void AddKill(){
        if(string.IsNullOrEmpty(Username)){Debug.LogError("Not Logged in to add kills!");return;}

        StartCoroutine(Coroutine_AddStat("kill",(newVal)=>{Kills= newVal;}));
    }

    public void AddDeath(){
        if(string.IsNullOrEmpty(Username)){Debug.LogError("Not Logged in to add deaths!");return;}

        StartCoroutine(Coroutine_AddStat("death",(newVal)=>{Deaths= newVal;}));
    }

    IEnumerator Coroutine_AddStat(string statname, Action<int> OnNewVal){
        WWWForm form = new WWWForm();
        form.AddField("username",Username);

        WWW req = new WWW(GetApiUrl("add_"+statname), form);
        yield return req;

        int newVal = -1;
        if(int.TryParse(req.text, out newVal)){
            OnNewVal.Invoke(newVal);
        }else{
            OnNewVal.Invoke(-1);
        }
    }
}