using UnityEngine;

namespace ShrinkTutorial
{
    public sealed class PlayerPrefsShrinkTutorialStorage : IShrinkTutorialStorage
    {
        private readonly string _storageKey;

        public PlayerPrefsShrinkTutorialStorage(string storageKey)
        {
            _storageKey = string.IsNullOrWhiteSpace(storageKey)
                ? "ShrinkTutorial.Progress"
                : storageKey;
        }

        public ShrinkTutorialProgress Load()
        {
            if (!PlayerPrefs.HasKey(_storageKey))
                return new ShrinkTutorialProgress();

            var json = PlayerPrefs.GetString(_storageKey, string.Empty);
            if (string.IsNullOrWhiteSpace(json))
                return new ShrinkTutorialProgress();

            return JsonUtility.FromJson<ShrinkTutorialProgress>(json) ?? new ShrinkTutorialProgress();
        }

        public void Save(ShrinkTutorialProgress progress)
        {
            var json = JsonUtility.ToJson(progress ?? new ShrinkTutorialProgress());
            PlayerPrefs.SetString(_storageKey, json);
            PlayerPrefs.Save();
        }

        public void Reset()
        {
            PlayerPrefs.DeleteKey(_storageKey);
            PlayerPrefs.Save();
        }
    }
}