using Google.Protobuf;
using Google.Protobuf.WellKnownTypes;


using ServerCore;
using ServerBase;
using ServerCommon;
using ServerCommon.BusinessLogDomain;
using MetaAssets;


namespace GameServer;

public class UgcNpcLikeRankAction : EntityActionBase
{
    private readonly Dictionary<UgcNpcRankState, List<UgcNpcRank>> m_ranks;
    
    public UgcNpcLikeRankAction(UgcNpcRankEntity owner) : base(owner)
    {
        m_ranks = new();
    }
    
    public override async Task<Result> onInit() => await Task.FromResult(new Result());

    public override void onClear()
    {
    }
    
    public async Task<(Result result, List<UgcNpcRank>? list)> getRanks(UgcNpcRankState state)
    {
        if (!m_ranks.TryGetValue(state, out var ranks))
        {
            ranks = await loadRank(state);
        }
        
        return (new Result(), ranks);
    }
    
    public async Task<List<UgcNpcRank>?> loadRank(UgcNpcRankState state)
    {
        Result result;
        List<UgcNpcRank>? list;

        var server_logic = GameServerApp.getServerLogic();
        var redis_client = server_logic.getRedisConnector();
        
        var rank_date = UgcNpcRankHelper.getCurrentRankDate();
        
        // 누적 랭킹 조회
        if (state == UgcNpcRankState.Total)
        {
            var total_cache_request = new UgcNpcTotalRankCacheRequest(UgcNpcRankType.Like, rank_date, redis_client);

            result = await total_cache_request.getRanks(UgcNpcRankEntity.DefaultPageNum, UgcNpcRankEntity.DefaultPageSize);
            if (result.isFail()) return null;

            var total_cache = total_cache_request.getTotalCache();
            NullReferenceCheckHelper.throwIfNull(total_cache, () => $"total_cache is null !!!");

            list = await UgcNpcRankHelper.getUgcNpcSummaryFromMetaGuid(total_cache.Ranks);
        }
        // 트랜드 랭킹 조회
        else
        {
            var trend_cache_request = new UgcNpcTrendRankCacheRequest(UgcNpcRankType.Like, rank_date, redis_client);
            result = await trend_cache_request.getRanks(UgcNpcRankEntity.DefaultPageNum, UgcNpcRankEntity.DefaultPageSize);
            if (result.isFail()) return null;

            var trend_rank_cache = trend_cache_request.getTrendRankCache();
            NullReferenceCheckHelper.throwIfNull(trend_rank_cache, () => $"trend_rank_cache is null !!!");

            list = await UgcNpcRankHelper.getUgcNpcSummaryFromMetaGuid(trend_rank_cache.Ranks);
        }
        
        Log.getLogger().info($"update ugc npc like rank data : rank state[{state}] / rank count[{list.Count}]");
        m_ranks[state] = list;

        return list;
    }
    
    public async Task<Result> setRankScore(string ownerGuid, string targetUserGuid, string ugcNpcMetaGuid, bool isAdd)
    {
        var key = UgcNpcRankHelper.makeRankKey(targetUserGuid, ugcNpcMetaGuid);
        var delta = isAdd ? 1 : -1;
        
        var result = await UgcNpcRankHelper.updateUgcNpcRank(UgcNpcRankState.Total, UgcNpcRankType.Like, key, delta, null);
        if (result.isFail()) return result;
        
        result = await UgcNpcRankHelper.updateUgcNpcRank(UgcNpcRankState.Trend, UgcNpcRankType.Like, key, delta, UgcNpcRankHelper.makeCurrentOrganizationDate());
        
        return result;
    }
}