using System.ComponentModel;
using ServerCore; using ServerBase;
using StackExchange.Redis;

using USER_GUID = System.String;

namespace ServerCommon.Cache;

public class CaliumConverterManageCacheRequest : RedisRequestSharedBase
{
    private const int DefaultManageExpireMinute = 1;

    private const string LastDateKey = "lastdate";
    private const string CaliumKey = "calium";
    
    // in
    
    // out

    public CaliumConverterManageCacheRequest(RedisConnector redisConnector) : base("CaliumConverterManage", redisConnector)
    {
        
    }
    
    protected override string onMakeKey() => "caliumConverter:manage";
    private string getStartRunningKey() => $"{onMakeKey()}:start";

    private string getDailyCaliumForUserKey(int day)
    {
        var base_key = $"{onMakeKey()}:daily";
        base_key = $"{base_key}:{day}";
        return base_key;
    }
    
    public override string toBasicString() => "CaliumConverterManageCacheRequest";
    
    public async Task<bool> startCaliumConverterManage()
    {
        var result = new Result();

        try
        {
            result = await onPrepareRequest();
            if (result.isFail()) return false;

            var database = getDatabase();
            NullReferenceCheckHelper.throwIfNull(database, () => $"database is null !!!");

            var redis_value = await database.StringSetAsync(getStartRunningKey(), DateTimeHelper.Current.ToString("yyyy-MM-dd HH:mm:ss"), TimeSpan.FromMinutes(DefaultManageExpireMinute), When.NotExists);
            if (false == redis_value) return false;
        }
        catch (Exception e)
        {
            var error_code = ServerErrorCode.TryCatchException;
            var err_msg = $"Failed to get CaliumConverterManageCache from Redis !!! : : errorCode{error_code}, errMsg:{e.Message}";
            result.setFail(error_code, err_msg);
            Log.getLogger().error(result.toBasicString());

            return false;
        }

        return true;
    }

    public async Task<DateTime?> getLastFillUpDailyCaliumDate()
    {
        var result = new Result();
        var last_fill_up_date = DateTimeHelper.MinTime;

        try
        {
            result = await onPrepareRequest();
            if (result.isFail()) return null;

            var database = getDatabase();
            NullReferenceCheckHelper.throwIfNull(database, () => $"database is null !!!");

            var redis_value = await database.HashGetAsync(onMakeKey(), LastDateKey);
            if (redis_value.IsNullOrEmpty) return null;

            DateTime.TryParse(redis_value, out last_fill_up_date);
        }
        catch (Exception e)
        {
            var error_code = ServerErrorCode.TryCatchException;
            var err_msg = $"Failed to get CaliumConverterManageCache from Redis !!! : : errorCode{error_code}, errMsg:{e.Message}";
            result.setFail(error_code, err_msg);
            Log.getLogger().error(result.toBasicString());

            return null;
        }

        return last_fill_up_date;
    }
    
    public async Task<Result> setLastFillUpDailyCaliumDate(string lastRunningDate)
    {
        var result = new Result();
        
        try
        {
            result = await onPrepareRequest();
            if (result.isFail()) return result;
            
            var database = getDatabase();
            NullReferenceCheckHelper.throwIfNull(database, () => $"database is null !!!");

            _ = await database.HashSetAsync(onMakeKey(), LastDateKey, lastRunningDate);
        }
        catch (Exception e)
        {
            var error_code = ServerErrorCode.TryCatchException;
            var err_msg = $"Failed to get CaliumConverterManageCache from Redis !!! : : errorCode{error_code}, errMsg:{e.Message}";
            result.setFail(error_code, err_msg);
            Log.getLogger().error(result.toBasicString());
        }

        return result;
    }

    public async Task<double> fillUpDailyCalium(double fillUpCalium)
    {
        var result = new Result();
        var is_first = false;
        
        // 1. Last fill up daily date 체크
        var last_date = await getLastFillUpDailyCaliumDate();
        if (null == last_date) is_first = true;

        if (fillUpCalium == 0 && !is_first) return 0;
        if(is_first) fillUpCalium += (double)MetaHelper.GameConfigMeta.CaliumConverterInitialValue;
        
        // 2. fill up calium
        result = await changeTotalCaliumAsync(fillUpCalium);
        if (result.isFail()) return -1;

        return fillUpCalium;
    }

    public async Task<Result> changeTotalCaliumAsync(double calium)
    {
        var result = new Result();
        
        try
        {
            result = await onPrepareRequest();
            if (result.isFail()) return result;

            var database = getDatabase();
            NullReferenceCheckHelper.throwIfNull(database, () => $"database is null !!!");
            
            var redis_value = await database.HashIncrementAsync(onMakeKey(), CaliumKey, calium);
            if (redis_value < 0)
            {
                var err_msg = $"fail to change daily cailum : change calium - {calium}";
                result.setFail(ServerErrorCode.RedisHashesWriteFailed, err_msg);
                Log.getLogger().error(err_msg);
                return result;
            }
        }
        catch (Exception e)
        {
            var error_code = ServerErrorCode.TryCatchException;
            var err_msg = $"Failed to get CaliumConverterManageCache from Redis !!! : : errorCode{error_code}, errMsg:{e.Message}";
            result.setFail(error_code, err_msg);
            Log.getLogger().error(result.toBasicString());
        }

        return result;
    }

    public async Task<bool> isExist(bool isTotal, int day)
    {
        var result = new Result();
        
        try
        {
            result = await onPrepareRequest();
            if (result.isFail()) return false;

            var database = getDatabase();
            NullReferenceCheckHelper.throwIfNull(database, () => $"database is null !!!");

            var key = (isTotal) ? onMakeKey() : getDailyCaliumForUserKey(day);
            var redis_value = await database.KeyExistsAsync(key);
            return redis_value;
        }
        catch (Exception e)
        {
            var error_code = ServerErrorCode.TryCatchException;
            var err_msg = $"Failed to get exist key !!! : : errorCode{error_code}, errMsg:{e.Message}";
            result.setFail(error_code, err_msg);
            Log.getLogger().error(result.toBasicString());
            
            return false;
        }
    }
    
    public async Task<decimal> getTotalCaliumAsync()
    {
        var result = new Result();
        decimal calium;

        try
        {
            result = await onPrepareRequest();
            if (result.isFail()) return -1;

            var database = getDatabase();
            NullReferenceCheckHelper.throwIfNull(database, () => $"database is null !!!");

            var redis_value = await database.HashGetAsync(onMakeKey(), CaliumKey);
            if (redis_value.IsNullOrEmpty) return -1;

            redis_value.ToString().toDecimal(out calium);
        }
        catch (Exception e)
        {
            var error_code = ServerErrorCode.TryCatchException;
            var err_msg = $"Failed to get CaliumConverterManageCache from Redis !!! : : errorCode{error_code}, errMsg:{e.Message}";
            result.setFail(error_code, err_msg);
            Log.getLogger().error(result.toBasicString());

            return -1;
        }

        return calium;
    }

    public async Task<Result> changeCaliumForUserPerDailyAsync(USER_GUID userGuid, double calium, int day)
    {
        var result = new Result();
        
        try
        {
            result = await onPrepareRequest();
            if (result.isFail())
            {
                result.setFail(ServerErrorCode.RedisHashesWriteFailed, $"failed to prepare request for redis: {nameof(changeCaliumForUserPerDailyAsync)}");
                return result;
            };

            var database = getDatabase();
            NullReferenceCheckHelper.throwIfNull(database, () => $"database is null !!!");
            
            var key = getDailyCaliumForUserKey(day);
            var redis_value = await database.HashIncrementAsync(key, userGuid, calium);

            await setTtlCaliumForUserPerDailyAsync(key);
        }
        catch (Exception e)
        {
            var error_code = ServerErrorCode.TryCatchException;
            var err_msg = $"Failed to get CaliumConverterManageCache from Redis !!! : : errorCode{error_code}, errMsg:{e.Message}";
            result.setFail(error_code, err_msg);
            Log.getLogger().error(result.toBasicString());
        }

        return result;
    }

    public async Task<Dictionary<USER_GUID, double>?> getCaliumForUserPerDailyCountAsync(int day)
    {
        var result = new Result();
        var list = new Dictionary<USER_GUID, double>();
        
        try
        {
            result = await onPrepareRequest();
            if (result.isFail()) return null;

            var database = getDatabase();
            NullReferenceCheckHelper.throwIfNull(database, () => $"database is null !!!");

            var key = getDailyCaliumForUserKey(day);

            var redis_values = await database.HashGetAllAsync(key);
            
            foreach (var value in redis_values)
            {
                value.Value.ToString().toDecimal(out var calium);
                var user_guid = value.Name.ToString();
                list.Add(user_guid, (double)calium);
            }

            return list;
        }
        catch (Exception e)
        {
            var error_code = ServerErrorCode.TryCatchException;
            var err_msg =
                $"Failed to get CaliumConverterManageCache from Redis !!! : : errorCode{error_code}, errMsg:{e.Message}";
            result.setFail(error_code, err_msg);
            Log.getLogger().error(result.toBasicString());

            return null;
        }
    }
    
    public async Task<double> getCaliumForUserPerDailyAsync(USER_GUID userGuid, int day)
    {
        var result = new Result();
        double daily_calium;

        try
        {
            result = await onPrepareRequest();
            if (result.isFail()) return 0;

            var database = getDatabase();
            NullReferenceCheckHelper.throwIfNull(database, () => $"database is null !!!");

            var key = getDailyCaliumForUserKey(day);

            var redis_value = await database.HashGetAsync(key, userGuid);
            if (redis_value.IsNullOrEmpty)
            {
                daily_calium = (double)MetaHelper.GameConfigMeta.CaliumConverterLimitPerPerson;
                _ = await database.HashSetAsync(key, userGuid, daily_calium);
                await setTtlCaliumForUserPerDailyAsync(key);
            }
            else
            {
                redis_value.TryParse(out daily_calium);   
            }
            
            if (daily_calium < 0) daily_calium = 0;
        }
        catch (Exception e)
        {
            var error_code = ServerErrorCode.TryCatchException;
            var err_msg =
                $"Failed to get CaliumConverterManageCache from Redis !!! : : errorCode{error_code}, errMsg:{e.Message}";
            result.setFail(error_code, err_msg);
            Log.getLogger().error(result.toBasicString());

            return -1;
        }

        return daily_calium;
    }

    private async Task<Result> setTtlCaliumForUserPerDailyAsync(string key)
    {
        var result = new Result();

        try
        {
            result = await onPrepareRequest();
            if (result.isFail()) return result;

            var database = getDatabase();
            NullReferenceCheckHelper.throwIfNull(database, () => $"database is null !!!");

            // 1. 현재 ttl 설정 확인
            var redis_value = await database.KeyTimeToLiveAsync(key);
            if (null != redis_value)
            {
                return result;
            }
            
            // 2. ttl 시간 생성
            var current = DateTimeHelper.Current;
            var base_time = new DateTime(current.Year, current.Month, current.Day,
                MetaHelper.GameConfigMeta.CaliumConverterPivotTime, 0, 0);

            TimeSpan check;
            if (current < base_time) check = base_time - current;
            else check = base_time.AddDays(1) - current;
            
            // 3. ttl 설정
            _ = await database.KeyExpireAsync(key, check);
        }
        catch (Exception e)
        {
            var error_code = ServerErrorCode.TryCatchException;
            var err_msg =
                $"Failed to get CaliumConverterManageCache from Redis !!! : : errorCode{error_code}, errMsg:{e.Message}";
            result.setFail(error_code, err_msg);
            Log.getLogger().error(result.toBasicString());
        }

        return result;
    }
}