using MoviconWebApi.Entities;

namespace MoviconWebApi.API.DeviceAlarmApi
{
    public static class DeviceAlarmData
    {
        /// <summary>
        /// 获取设备报警列表
        /// </summary>
        public static async Task<(List<DeviceAlarmResponse> Items, long Total)> GetDeviceAlarmList(
            IFreeSql freeSql,
            DeviceAlarmRequest request)
        {
            try
            {
                var query = freeSql.Select<DeviceAlarm>()
                    .WhereIf(!string.IsNullOrWhiteSpace(request.DeviceCode),
                        a => a.DeviceCode == request.DeviceCode)
                    .WhereIf(request.DeviceState > 0,
                        a => a.DeviceState == request.DeviceState);

                // 处理时间范围查询
                if (!string.IsNullOrWhiteSpace(request.StartTime) && DateTime.TryParse(request.StartTime, out var startTime))
                {
                    query = query.Where(a => a.StartTime >= startTime);
                }

                if (!string.IsNullOrWhiteSpace(request.EndTime) && DateTime.TryParse(request.EndTime, out var endTime))
                {
                    query = query.Where(a => a.EndTime <= endTime);
                }

                // 统计总数
                var total = await query.CountAsync();

                // 参数兜底与限制
                var pageNo = request.PageNo <= 0 ? 1 : request.PageNo;
                var pageSize = request.PageSize <= 0 ? 100 : request.PageSize;
                if (pageSize > 100) pageSize = 100;

                var data = await query
                    .OrderByDescending(a => a.StartTime)
                    .Page(pageNo, pageSize)
                    .ToListAsync(a => new DeviceAlarmResponse
                    {
                        DeviceCode = a.DeviceCode,
                        DeviceName = a.DeviceName,
                        DeviceState = a.DeviceState,
                        AlarmMessage = a.AlarmMessage,
                        StartTime = a.StartTime.ToString("yyyy-MM-dd HH:mm:ss"),
                        EndTime = a.EndTime.ToString("yyyy-MM-dd HH:mm:ss")
                    });

                return (data ?? new List<DeviceAlarmResponse>(), total);
            }
            catch (Exception ex)
            {
                throw new Exception($"获取设备报警数据失败: {ex.Message}", ex);
            }
        }

        /// <summary>
        /// 获取设备报警分页数据
        /// </summary>
        public static async Task<(List<DeviceAlarmResponse> Items, long Total)> GetDeviceAlarmPagedList(
            IFreeSql freeSql,
            DeviceAlarmPagedRequest request)
        {
            try
            {
                var query = freeSql.Select<DeviceAlarm>()
                    .WhereIf(!string.IsNullOrWhiteSpace(request.DeviceCode),
                        a => a.DeviceCode == request.DeviceCode)
                    .WhereIf(request.DeviceState > 0,
                        a => a.DeviceState == request.DeviceState);

                // 处理时间范围查询
                if (!string.IsNullOrWhiteSpace(request.StartTime) && DateTime.TryParse(request.StartTime, out var startTime))
                {
                    query = query.Where(a => a.StartTime >= startTime);
                }

                if (!string.IsNullOrWhiteSpace(request.EndTime) && DateTime.TryParse(request.EndTime, out var endTime))
                {
                    query = query.Where(a => a.EndTime <= endTime);
                }

                var total = await query.CountAsync();

                var data = await query
                    .OrderByDescending(a => a.StartTime)
                    .Page(request.PageNumber, request.PageSize)
                    .ToListAsync(a => new DeviceAlarmResponse
                    {
                        DeviceCode = a.DeviceCode,
                        DeviceName = a.DeviceName,
                        DeviceState = a.DeviceState,
                        AlarmMessage = a.AlarmMessage,
                        StartTime = a.StartTime.ToString("yyyy-MM-dd HH:mm:ss"),
                        EndTime = a.EndTime.ToString("yyyy-MM-dd HH:mm:ss")
                    });

                return (data ?? new List<DeviceAlarmResponse>(), total);
            }
            catch (Exception ex)
            {
                throw new Exception($"获取设备报警分页数据失败: {ex.Message}", ex);
            }
        }

        /// <summary>
        /// 获取最新的设备报警记录
        /// </summary>
        public static async Task<DeviceAlarmResponse?> GetLatestDeviceAlarm(
            IFreeSql freeSql,
            DeviceAlarmRequest request)
        {
            try
            {
                var query = freeSql.Select<DeviceAlarm>()
                    .WhereIf(!string.IsNullOrWhiteSpace(request.DeviceCode),
                        a => a.DeviceCode == request.DeviceCode)
                    .WhereIf(request.DeviceState > 0,
                        a => a.DeviceState == request.DeviceState);

                var data = await query
                    .OrderByDescending(a => a.StartTime)
                    .FirstAsync(a => new DeviceAlarmResponse
                    {
                        DeviceCode = a.DeviceCode,
                        DeviceName = a.DeviceName,
                        DeviceState = a.DeviceState,
                        AlarmMessage = a.AlarmMessage,
                        StartTime = a.StartTime.ToString("yyyy-MM-dd HH:mm:ss"),
                        EndTime = a.EndTime.ToString("yyyy-MM-dd HH:mm:ss")
                    });

                return data;
            }
            catch (Exception ex)
            {
                throw new Exception($"获取最新设备报警数据失败: {ex.Message}", ex);
            }
        }

        /// <summary>
        /// 获取指定设备的活动报警（EndTime为最大值表示未结束）
        /// </summary>
        public static async Task<List<DeviceAlarmResponse>> GetActiveAlarms(
            IFreeSql freeSql,
            string? deviceCode)
        {
            try
            {
                var query = freeSql.Select<DeviceAlarm>()
                    .WhereIf(!string.IsNullOrWhiteSpace(deviceCode),
                        a => a.DeviceCode == deviceCode)
                    .Where(a => a.EndTime == DateTime.MaxValue || a.EndTime > DateTime.Now);

                var data = await query
                    .OrderByDescending(a => a.StartTime)
                    .ToListAsync(a => new DeviceAlarmResponse
                    {
                        DeviceCode = a.DeviceCode,
                        DeviceName = a.DeviceName,
                        DeviceState = a.DeviceState,
                        AlarmMessage = a.AlarmMessage,
                        StartTime = a.StartTime.ToString("yyyy-MM-dd HH:mm:ss"),
                        EndTime = a.EndTime.ToString("yyyy-MM-dd HH:mm:ss")
                    });

                return data ?? new List<DeviceAlarmResponse>();
            }
            catch (Exception ex)
            {
                throw new Exception($"获取活动报警数据失败: {ex.Message}", ex);
            }
        }
    }
}