using System.Collections.Generic;
using OTGIntegrated.Core;
using OTGIntegrated.Items;
using UnityEngine;

namespace OTGIntegrated.Save
{
    public sealed class SaveSystem : MonoBehaviour
    {
        private const string SaveKey = "OTG_Lab08_IntegratedRPG_Save";

        public List<ItemData> itemCatalog = new List<ItemData>();

        private GameManager gameManager;

        public void Initialize(GameManager manager)
        {
            gameManager = manager;
        }

        public void Save()
        {
            if (gameManager == null)
            {
                gameManager = GameManager.Instance;
            }

            if (gameManager == null)
            {
                return;
            }

            GameSaveData data = new GameSaveData();

            if (gameManager.playerController != null)
            {
                data.playerPosition = gameManager.playerController.transform.position;
            }

            if (gameManager.playerStats != null)
            {
                data.currentHealth = gameManager.playerStats.CurrentHealth;
                data.currentMana = gameManager.playerStats.CurrentMana;
            }

            if (gameManager.levelSystem != null)
            {
                data.level = gameManager.levelSystem.level;
                data.currentExp = gameManager.levelSystem.currentExp;
                data.expToNextLevel = gameManager.levelSystem.expToNextLevel;
            }

            if (gameManager.talentManager != null)
            {
                data.talentPoints = gameManager.talentManager.availableTalentPoints;
                data.learnedTalentIds = new List<string>(gameManager.talentManager.LearnedTalentIds);
            }

            if (gameManager.questManager != null)
            {
                data.quests = gameManager.questManager.SaveData();
            }

            if (gameManager.inventory != null)
            {
                data.inventory = gameManager.inventory.SaveData();
            }

            if (gameManager.weaponManager != null)
            {
                data.currentWeaponId = gameManager.weaponManager.SaveData();
            }

            PlayerPrefs.SetString(SaveKey, JsonUtility.ToJson(data));
            PlayerPrefs.Save();
            GameEvents.RaiseNotification("Прогресс сохранён");
        }

        public void Load()
        {
            if (!PlayerPrefs.HasKey(SaveKey))
            {
                GameEvents.RaiseNotification("Сохранение не найдено");
                return;
            }

            if (gameManager == null)
            {
                gameManager = GameManager.Instance;
            }

            if (gameManager == null)
            {
                return;
            }

            GameSaveData data = JsonUtility.FromJson<GameSaveData>(PlayerPrefs.GetString(SaveKey));
            if (data == null)
            {
                GameEvents.RaiseNotification("Сохранение повреждено");
                return;
            }

            if (gameManager.playerController != null)
            {
                CharacterController controller = gameManager.playerController.GetComponent<CharacterController>();
                if (controller != null) controller.enabled = false;
                gameManager.playerController.transform.position = data.playerPosition;
                if (controller != null) controller.enabled = true;
            }

            if (gameManager.levelSystem != null)
            {
                gameManager.levelSystem.SetProgress(data.level, data.currentExp, data.expToNextLevel);
            }

            if (gameManager.inventory != null)
            {
                gameManager.inventory.LoadData(data.inventory, itemCatalog);
            }

            if (gameManager.talentManager != null)
            {
                gameManager.talentManager.LoadProgress(data.talentPoints, data.learnedTalentIds);
            }

            if (gameManager.questManager != null)
            {
                gameManager.questManager.LoadData(data.quests);
            }

            if (gameManager.weaponManager != null)
            {
                gameManager.weaponManager.LoadData(data.currentWeaponId);
            }

            if (gameManager.playerStats != null)
            {
                gameManager.playerStats.SetRuntimeVitals(data.currentHealth, data.currentMana);
            }

            GameEvents.RaiseNotification("Прогресс загружен");
        }

        public void ResetSave()
        {
            PlayerPrefs.DeleteKey(SaveKey);
            PlayerPrefs.Save();
            GameEvents.RaiseNotification("Сохранение сброшено");
        }
    }
}