using System.Linq.Expressions;
using Common;
using CommonDomain;
using CommonDomain.Enum;
using Microsoft.Extensions.Logging;
using MongoRepository;

namespace AdminService.EmptyRoomRate
{
    public class EmptyRoomRateConfigService : IEmptyRoomRateConfigService
    {
        private readonly IMongoBaseRepository<EmptyRoomRateConfig> _emptyRoomRateMongo;

        public EmptyRoomRateConfigService(
            IMongoBaseRepository<EmptyRoomRateConfig> emptyRoomRateMongo)
        {
            _emptyRoomRateMongo = emptyRoomRateMongo;
        }

        /// <inheritdoc/>
        public async Task<(List<EmptyRoomRateConfig> list, long count)> GetList(int page, int size, GameTypeEnum? gameType, int? roomLevel)
        {
            Expression<Func<EmptyRoomRateConfig, bool>> filter = c => true;

            if (gameType.HasValue)
            {
                var type = gameType.Value;
                filter = filter.And(c => c.GameType == type);
            }

            if (roomLevel.HasValue)
            {
                var level = roomLevel.Value;
                filter = filter.And(c => c.RoomLevel == level);
            }

            var (total, list) = await _emptyRoomRateMongo.QueryPageAsync(filter, c => c.Id, false, size, page);

            return (list, total);
        }

        /// <inheritdoc/>
        public async Task<(bool isok, string msg)> Add(GameTypeEnum gameType, int roomLevel, int emptyRoomRate)
        {
            if (emptyRoomRate < 0 || emptyRoomRate > 100)
                return (false, "空房率必须在0到100之间");

            if (gameType == GameTypeEnum.中国象棋)
                roomLevel = 0;

            var existing = gameType == GameTypeEnum.中国象棋
                ? await _emptyRoomRateMongo.FindOneAsync(c => c.GameType == gameType)
                : await _emptyRoomRateMongo.FindOneAsync(c => c.GameType == gameType && c.RoomLevel == roomLevel);
            if (existing != null)
            {
                return (false, "该游戏类型与房间等级的组合已存在");
            }

            await _emptyRoomRateMongo.InsertOneAsync(new EmptyRoomRateConfig
            {
                GameType = gameType,
                RoomLevel = roomLevel,
                EmptyRoomRate = emptyRoomRate
            });

            return (true, "新增成功");
        }

        /// <inheritdoc/>
        public async Task<(bool isok, string msg)> Update(string id, int emptyRoomRate)
        {
            if (emptyRoomRate < 0 || emptyRoomRate > 100)
                return (false, "空房率必须在0到100之间");

            var config = await _emptyRoomRateMongo.FindByIdAsync(id);
            if (config == null)
            {
                return (false, "配置不存在");
            }

            config.EmptyRoomRate = emptyRoomRate;
            await _emptyRoomRateMongo.ReplaceOneAsync(config);

            return (true, "修改成功");
        }

        /// <inheritdoc/>
        public async Task<(bool isok, string msg)> Delete(string id)
        {
            var config = await _emptyRoomRateMongo.FindByIdAsync(id);
            if (config == null)
            {
                return (false, "配置不存在");
            }

            await _emptyRoomRateMongo.DeleteByIdAsync(id);

            return (true, "删除成功");
        }
    }
}