using System.Threading.Tasks;
using UnityEngine;

namespace BaseGames.Platform
{
    /// <summary>
    /// IPlatformService 的空实现，无平台 SDK 时作为默认服务使用。
    /// 所有操作均为无操作（no-op）或返回安全默认值。
    /// </summary>
    public class NullPlatformService : IPlatformService
    {
        public bool IsInitialized   => true;
        public bool IsCloudAvailable => false;

        public Task<bool> InitializeAsync() => Task.FromResult(true);
        public void RunCallbacks()          { }
        public void Shutdown()              { }

        public void UnlockAchievement(string achievementId)
            => Debug.Log($"[NullPlatform] UnlockAchievement: {achievementId}");

        public void ClearAchievement(string achievementId) { }

        public Task<bool> IsAchievementUnlocked(string achievementId)
            => Task.FromResult(false);

        public void SetStat(string statId, int value)           { }
        public void IncrementStat(string statId, int increment = 1) { }
        public int  GetStat(string statId)                      => 0;

        public Task<bool>   CloudSaveAsync(string fileName, byte[] data) => Task.FromResult(false);
        public Task<byte[]> CloudLoadAsync(string fileName)               => Task.FromResult<byte[]>(null);

        public void SetRichPresence(string key, string value)   { }
        public void ClearRichPresence()                         { }

        public void SubmitLeaderboardScore(string boardId, long score)
            => Debug.Log($"[NullPlatform] SubmitLeaderboardScore: {boardId} = {score}");

        public Task<LeaderboardEntry[]> GetLeaderboardEntries(string boardId, int maxCount)
            => Task.FromResult(System.Array.Empty<LeaderboardEntry>());

        public bool IsDLCOwned(string dlcId)    => false;
        public void ShowOverlay(string dialog)  { }
    }
}