namespace ZhiYi.Core.Application.Services.Implements
{
    public class SharedAppService : ISharedAppService
    {
        private readonly IMapper _mapper;
        private readonly SqlSugarClient _client;
        private readonly IConfiguration _configuration;
        private readonly ILogger<SharedAppService> _logger;
        private readonly IDatabase _redis;
        private readonly IGroupAppService _groupAppService;

        public SharedAppService(IMapper mapper, SqlSugarClient client, IConfiguration configuration, ILogger<SharedAppService> logger, IConnectionMultiplexer redis, IGroupAppService groupAppService)
        {
            _mapper = mapper;
            _configuration = configuration;
            string connStr = _configuration.GetSection("ConnectionStrings:SqlConnection").Value;
            if (_client == null)
            {
                _client = SugarClientInit.Instance.GetDdClient(connStr);
            }
            _logger = logger;
            _redis = redis.GetDatabase();
            _groupAppService = groupAppService;
        }

        public async Task<AppResponse<string>> CreateAsync(SharedCreationDto input)
        {
            input.TrimStringFields();
            var shared = _mapper.Map<ZhiYi_Shared>(input);
            switch (shared.Type)
            {
                case 1:
                    //次数
                    if (int.TryParse(input.Value, out int time))
                    {
                        if (time <= 0)
                            throw new Exception("创建分享失败，次数至少为1且为整数");
                        shared.Time = time;
                    }
                    else
                        throw new Exception("创建分享失败，次数输入格式不正确");
                        break;
                case 2:
                    //过期时间
                    if (DateTime.TryParse(input.Value, out DateTime exp))
                        shared.Exp = exp;
                    else
                        throw new Exception("创建分享失败，过期时间格式不正确");
                        break;
                case 3:
                    //指定人员
                    if (long.TryParse(input.Value, out long opeartor))
                        shared.Operator = opeartor;
                    else
                        throw new Exception("创建分享失败，指定人员账号ID不正确");
                    break;
                default:
                    throw new Exception("创建分享失败，类型为1-3的整数");
            }
            try
            {
                shared.Code = Guid.NewGuid().ToString();
                await _client.Insertable(shared).ExecuteCommandAsync();
                return new AppResponse<string> { Data = shared.Code };
            }
            catch(Exception ex)
            {
                _logger.LogError("创建分享失败:{message}", ex.Message);
                throw new Exception("创建分享失败");
            }
        }

        public async Task DeleteBatchAsync(SharedDeleteDto input)
        {
            input.TrimStringFields();
            if (!input.Codes.Any())
                throw new Exception("删除失败，未指定任何分享码");
            var codes = input.Codes.ToArray();
            await _client.Deleteable<ZhiYi_Shared>()
                .Where(x => codes.Contains(x.Code))
                .ExecuteCommandAsync();
        }

        public async Task<AppResponse<List<SharedDto>>> GetListAsync(long id)
        {
            var sharedList = await _client.Queryable<ZhiYi_Shared>()
                .LeftJoin<ZhiYi_User>((a, b) => a.Operator == b.Id)
                .LeftJoin<ZhiYi_User>((a, b, c) => a.Shared_User == c.Id)
                .Where(a => a.Shared_User == id)
                .Select((a, b, c) => new SharedDto
                {
                    Code = a.Code,
                    Type = a.Type,
                    Exp = a.Exp,
                    Time = a.Time,
                    Operator = a.Operator,
                    OperatorName = b.NickName,
                    GroupIds = a.GroupIds,
                    Shared_User = a.Shared_User,
                    Shared_UserName = c.NickName
                })
                .ToListAsync();
            return new AppResponse<List<SharedDto>> { Data = sharedList };
        }

        public async Task UseShared(UseSharedCodeDto input)
        {
            if (input.Code.IsNullOrEmpty())
                throw new Exception("导入失败，分享码不正确");
            var shared = await _client.Queryable<ZhiYi_Shared>()
                .Where(x => x.Code == input.Code)
                .FirstAsync();
            if (shared == null)
                throw new Exception("导入失败，分享码不存在或已删除");
            switch (shared.Type)
            {
                case 1:
                    //验证次数
                    if (shared.Time <= 0)
                        throw new Exception("分享码超出使用次数限制");
                    //剩余次数-1
                    shared.Time -= 1;
                    await _client.Updateable(shared).ExecuteCommandAsync();
                    break;
                case 2:
                    //验证期限
                    if (DateTime.Now >= shared.Exp)
                        throw new Exception("分享码已过期");
                    break;
                case 3:
                    //验证人员
                    if (input.UserId != shared.Operator)
                        throw new Exception("非当前分享码可使用人员");
                    break;
                default:
                    throw new Exception("导入失败，分享码类型不正确");
            }
            var groupArr = shared.GroupIds.Split(",");
            var groupIds = groupArr.Select(x => long.Parse(x)).ToArray();
            //批量导入
            await _groupAppService.CreateBatchAsync(new GroupCreationBatchDto { Ids = groupIds , UserId = input.UserId});
        }
    }
}