using System;
using System.IO;
using UnityEngine;

public static class DailyTaskSaveService
{
    private const string SaveCategory = "daily_task";
    private const string SaveKey = "runtime";
    private const string RecoverySlotKey = "daily_task_runtime";

    private static string LegacySaveFilePath
    {
        get { return Path.Combine(Application.persistentDataPath, "daily_tasks.json"); }
    }

    public static bool HasAnyRecoverableState()
    {
        return SecureSaveVault.HasAnyRecoverableState(SaveCategory, SaveKey, LegacySaveFilePath)
            || LocalRecoveryMirror.HasSlotData(RecoverySlotKey);
    }

    public static DailyTaskSaveData Load()
    {
        try
        {
            DailyTaskSaveData data;
            if (SecureSaveVault.TryLoadJson(SaveCategory, SaveKey, out data, LegacySaveFilePath))
            {
                return data ?? new DailyTaskSaveData();
            }

            if (LocalRecoveryMirror.TryLoadJson(RecoverySlotKey, out data) && data != null)
            {
                SecureSaveVault.SaveJson(SaveCategory, SaveKey, data, LegacySaveFilePath);
                return data;
            }

            return new DailyTaskSaveData();
        }
        catch (Exception ex)
        {
            Debug.LogWarning($"[DailyTaskSaveService] Load failed: {ex.Message}");
            return new DailyTaskSaveData();
        }
    }

    public static void Save(DailyTaskSaveData data)
    {
        if (data == null)
        {
            return;
        }

        try
        {
            SecureSaveVault.SaveJson(SaveCategory, SaveKey, data, LegacySaveFilePath);
            LocalRecoveryMirror.SaveJson(RecoverySlotKey, data);
        }
        catch (Exception ex)
        {
            Debug.LogWarning($"[DailyTaskSaveService] Save failed: {ex.Message}");
        }
    }

    public static void ClearPersistentState()
    {
        try
        {
            SecureSaveVault.Delete(SaveCategory, SaveKey, LegacySaveFilePath);
            LocalRecoveryMirror.DeleteSlot(RecoverySlotKey);
        }
        catch (Exception ex)
        {
            Debug.LogWarning($"[DailyTaskSaveService] Clear failed: {ex.Message}");
        }
    }
}