using System.Collections;
using System.Collections.Generic;
using UnityEngine;
using Sirenix.OdinInspector;
using KairoEngine.Statistics;
using KairoEngine.Core;
using UniRx;
using StatisticsSystem = KairoEngine.Statistics.Statistics;

namespace KairoEngine.Achievements
{
    [HideMonoScript]
    public class AchievementsController : SerializedMonoBehaviour
    {
        public string achievementUnlockedEvent = "AchievementUnlockedEvent";
        public string achievementLockedEvent = "AchievementLockedEvent";
        public string achievementOverrideEvent = "AchievementOverrideEvent";
       
        public bool CheckOnStart = true;
        public bool checkOnInterval = true;
        [ShowIf("@checkOnInterval"), SuffixLabel("ms")] public int checkInterval = 1000;
        [SuffixLabel("ms")] public int startDelay = 0;
        public bool debug = false;
        [ShowIf("@!initialized")] public AchievementsLibrary library;

        [ShowIf("@initialized"), System.NonSerialized, ShowInInspector, HideReferenceObjectPicker]
        [ListDrawerSettings(IsReadOnly = true, DraggableItems = false, Expanded = true, ShowIndexLabels = false, ShowPaging = false, ShowItemCount = true, HideRemoveButton = true)]
        public List<AchievementStatus> achievementsStatus;
        private bool initialized = false;
        private CompositeDisposable timerComposite;

        private void Start()
        {
            if(debug) Debug.Log("Initializing AchievementsController");
            if(StatisticsSystem.instance == null) Debug.LogError("Missing Statistics component");
            if(library == null) 
            {
                Debug.LogError("Missing Achievements Library on AchievementsController.\nPlease configure the Achievements module in the GameConfig file.");
                return;
            }
            achievementsStatus = new List<AchievementStatus>();
            for (int i = 0; i < library.achievements.Count; i++) 
            {
                int value = PlayerPrefs.GetInt($"ACHIEVEMENT_{library.achievements[i].identifier}", 0);
                achievementsStatus.Add(new AchievementStatus(library.achievements[i], value == 0 ? false : true));
                PlayerPrefs.SetInt($"ACHIEVEMENT_{library.achievements[i].identifier}", value);
            }
            if(initialized == false) initialized = true;
            Timer.ExecuteRealTime(startDelay, () => {
                if(CheckOnStart) CheckAchievements();
                if(checkOnInterval) StartCheckTimer();
            });
            GenericEvents.StartListening("UnlockAchievement", UnlockAchievement);
            GenericEvents.StartListening("LockAchievement", LockAchievement);
            GenericEvents.StartListening(achievementOverrideEvent, ChangeAchievement);
            
        }

        private void OnDestroy() 
        {
            if (timerComposite != null) timerComposite.Dispose();
        } 

        public void ChangeAchievement(string identifier, bool unlock)
        {
            if(unlock) UnlockAchievement(identifier);
            else LockAchievement(identifier);
        }

        public void CheckAchievements()
        {
            //if(debug) Debug.Log($"Checking achievements ({achievementsStatus.Count})");
            if(library == null) return;
            for (int i = 0; i < achievementsStatus.Count; i++)
            {
                if(achievementsStatus[i].unlocked == true) continue;
                if(achievementsStatus[i].achievement.HasAchieved())
                {
                    Debug.Log($"Achievement Unlocked: {achievementsStatus[i].achievement.title}");
                    achievementsStatus[i].unlocked = true;
                    GenericEvents.Trigger(achievementUnlockedEvent, achievementsStatus[i].achievement.identifier);
                    PlayerPrefs.SetInt($"ACHIEVEMENT_{achievementsStatus[i].achievement.identifier}", 1);
                }
            }
        }

        public void StartCheckTimer()
        {
            timerComposite = Timer.ExecuteRealTime(checkInterval, () => {
                if(checkOnInterval)
                {
                    CheckAchievements();
                    StartCheckTimer();
                }
            });
        }

        public void UnlockAchievement(string identifier)
        {  
            if(library == null) return;
            for (int i = 0; i < achievementsStatus.Count; i++)
            {
                if(achievementsStatus[i].achievement.identifier == identifier)
                {
                    if(achievementsStatus[i].unlocked == true) return;
                    if(debug) Debug.Log($"Unlocking achievement {identifier}");
                    achievementsStatus[i].unlocked = true;
                    GenericEvents.Trigger(achievementUnlockedEvent, achievementsStatus[i].achievement.identifier);
                    PlayerPrefs.SetInt($"ACHIEVEMENT_{achievementsStatus[i].achievement.identifier}", 1);
                }
            }
        }

        public void LockAchievement(string identifier)
        {
            if(library == null) return;
            for (int i = 0; i < achievementsStatus.Count; i++)
            {
                if(achievementsStatus[i].achievement.identifier == identifier)
                {
                    if(achievementsStatus[i].unlocked == false) return;
                    if(debug) Debug.Log($"Locking achievement {identifier}");
                    achievementsStatus[i].unlocked = false;
                    GenericEvents.Trigger(achievementLockedEvent, achievementsStatus[i].achievement.identifier);
                    PlayerPrefs.SetInt($"ACHIEVEMENT_{achievementsStatus[i].achievement.identifier}", 0);
                }
            }
        }
    }
}