using System;
using System.Linq;
using AsbCloudApp.Data;
using AsbCloudApp.Services;
using AsbCloudInfrastructure.Services.Cache;
using AsbCloudDb.Model;
using System.Collections.Generic;

namespace AsbCloudInfrastructure.Services
{
    public class AnalyticsService : IAnalyticsService
    {
        private readonly IAsbCloudDbContext db;
        private readonly ITelemetryService telemetryService;
        private readonly CacheTable<Telemetry> cacheTelemetry;

        public AnalyticsService(IAsbCloudDbContext db, ITelemetryService telemetryService, CacheDb cacheDb)
        {
            this.db = db;
            this.telemetryService = telemetryService;
            cacheTelemetry = cacheDb.GetCachedTable<Telemetry>((AsbCloudDbContext)db);
        }

        public IEnumerable<WellDepthToDayDto> GetWellDepthToDay(int wellId)
        {
            var telemetry = telemetryService.GetTelemetryByWellId(wellId);

            if (telemetry is null)
                return null;

            var depthToTimeData = (from d in db.DataSaubBases
                                   where d.IdTelemetry == telemetry.Id
                                   select new
                                   {
                                       d.Id,
                                       d.WellDepth,
                                       d.BitDepth,
                                       d.Date
                                   });

            var m = (int)Math.Round(1d * depthToTimeData.Count() / 2048);

            if (m > 1)
                depthToTimeData = depthToTimeData.Where(d => d.Id % m == 0);

            return depthToTimeData.Select(d => new WellDepthToDayDto
            {
                WellDepth = d.WellDepth,
                BitDepth = d.BitDepth,
                Date = d.Date
            }).ToList();
        }

        public IEnumerable<WellDepthToIntervalDto> GetWellDepthToInterval(int wellId,
            int intervalHours = 24, int intervalMinutes = 0, int workBeginHour = 8, int workBeginMinutes = 0)
        {
            var intervalTime = new TimeSpan(intervalHours, intervalMinutes, 0) == default 
                ? new TimeSpan(24, 0, 0) 
                : new TimeSpan(intervalHours, intervalMinutes, 0);
            var workDayBeginTime = new TimeSpan(workBeginHour, workBeginMinutes, 0) == default
                ? new TimeSpan(8, 0, 0)
                : new TimeSpan(intervalHours, intervalMinutes, 0); ;

            var telemetry = telemetryService.GetTelemetryByWellId(wellId);

            if (telemetry is null)
                return null;

            var timezoneOffset = cacheTelemetry.FirstOrDefault(t => t.Id == telemetry.Id).Info.TimeZoneOffsetTotalHours;

            var drillingPeriodsInfo = db.GetDepthToInterval(telemetry.Id, (int)intervalTime.TotalSeconds,
                (int)workDayBeginTime.TotalSeconds, timezoneOffset);

            var wellDepthToIntervalData = drillingPeriodsInfo.Select(d => new WellDepthToIntervalDto
            {
                IntervalStartDate = d.Item3,
                IntervalDepthProgress = (d.Item2 - d.Item1) ?? 0.0 / intervalHours
            }).OrderBy(d => d.IntervalStartDate).ToList();

            return wellDepthToIntervalData;
        }

        public IEnumerable<OperationPercentageDto> GetOperationsSummary(int wellId, 
            DateTime begin = default, DateTime end = default)
        {
            return new List<OperationPercentageDto>
            {
                new OperationPercentageDto { ProcessName = "Роторное бурение", Percentage = 19.7 },
                new OperationPercentageDto { ProcessName = "Подъем с проработкой", Percentage = 6.2 },
                new OperationPercentageDto { ProcessName = "Спуск с проработкой", Percentage = 9.4 },
                new OperationPercentageDto { ProcessName = "Подъем с промывкой", Percentage = 18.4 },
                new OperationPercentageDto { ProcessName = "Неподвижное состояние", Percentage = 12.1 },
                new OperationPercentageDto { ProcessName = "Вращение без циркуляции", Percentage = 7.4 },
                new OperationPercentageDto { ProcessName = "Спуск в скважину", Percentage = 16.7 },
                new OperationPercentageDto { ProcessName = "На поверхности", Percentage = 10.1 }
            };
        }

        public IEnumerable<OperationInfoDto> GetOperationsToTime(int wellId, 
            DateTime begin = default, DateTime end = default)
        {
            return new List<OperationInfoDto>
            {
                new OperationInfoDto
                {
                    IntervalBegin = new DateTime(2021, 06, 01, 08, 00, 00),
                    IntervalEnd = new DateTime(2021, 06, 02, 08, 00, 00),
                    OperationData = new List<OperationDetailsDto>
                    {
                        new OperationDetailsDto
                        {
                            OperationName = "Роторное бурение",
                            OperationStartTime = new DateTime(2021, 06, 01, 10, 00, 00),
                            DurationHours = 1.2
                        },
                        new OperationDetailsDto
                        {
                            OperationName = "Подъем с проработкой",
                            OperationStartTime = new DateTime(2021, 06, 01, 11, 00, 00),
                            DurationHours = 3.2
                        },
                        new OperationDetailsDto
                        {
                            OperationName = "Роторное бурение",
                            OperationStartTime = new DateTime(2021, 06, 01, 12, 00, 00),
                            DurationHours = 1.5
                        },
                        new OperationDetailsDto
                        {
                            OperationName = "Неподвижное состояние",
                            OperationStartTime = new DateTime(2021, 06, 01, 13, 00, 00),
                            DurationHours = 0.2
                        },
                        new OperationDetailsDto
                        {
                            OperationName = "Роторное бурение",
                            OperationStartTime = new DateTime(2021, 06, 01, 14, 00, 00),
                            DurationHours = 3.2
                        }
                    }
                },
                new OperationInfoDto
                {
                    IntervalBegin = new DateTime(2021, 06, 02, 08, 00, 00),
                    IntervalEnd = new DateTime(2021, 06, 03, 08, 00, 00),
                    OperationData = new List<OperationDetailsDto>
                    {
                        new OperationDetailsDto
                        {
                            OperationName = "На поверхности",
                            OperationStartTime = new DateTime(2021, 06, 13, 10, 01, 00),
                            DurationHours = 2.2
                        },
                        new OperationDetailsDto
                        {
                            OperationName = "Спуск в скважину",
                            OperationStartTime = new DateTime(2021, 06, 13, 11, 10, 00),
                            DurationHours = 0.4
                        },
                        new OperationDetailsDto
                        {
                            OperationName = "На поверхности",
                            OperationStartTime = new DateTime(2021, 06, 13, 12, 20, 00),
                            DurationHours = 2.5
                        },
                        new OperationDetailsDto
                        {
                            OperationName = "Вращение без циркуляции",
                            OperationStartTime = new DateTime(2021, 06, 13, 13, 00, 00),
                            DurationHours = 1.2
                        },
                        new OperationDetailsDto
                        {
                            OperationName = "Роторное бурение",
                            OperationStartTime = new DateTime(2021, 06, 13, 14, 00, 00),
                            DurationHours = 5.2
                        }
                    }
                },
                new OperationInfoDto
                {
                    IntervalBegin = new DateTime(2021, 06, 03, 08, 00, 00),
                    IntervalEnd = new DateTime(2021, 06, 04, 08, 00, 00),
                    OperationData = new List<OperationDetailsDto>
                    {
                        new OperationDetailsDto
                        {
                            OperationName = "Подъем с проработкой",
                            OperationStartTime = new DateTime(2021, 06, 12, 10, 00, 00),
                            DurationHours = 3.2
                        },
                        new OperationDetailsDto
                        {
                            OperationName = "Спуск с проработкой",
                            OperationStartTime = new DateTime(2021, 06, 12, 11, 00, 00),
                            DurationHours = 1.4
                        },
                        new OperationDetailsDto
                        {
                            OperationName = "Подъем с проработкой",
                            OperationStartTime = new DateTime(2021, 06, 12, 12, 00, 00),
                            DurationHours = 0.5
                        },
                        new OperationDetailsDto
                        {
                            OperationName = "На поверхности",
                            OperationStartTime = new DateTime(2021, 06, 12, 13, 00, 00),
                            DurationHours = 3.2
                        },
                        new OperationDetailsDto
                        {
                            OperationName = "Роторное бурение",
                            OperationStartTime = new DateTime(2021, 06, 13, 14, 00, 00),
                            DurationHours = 1.2
                        }
                    }
                }
            };
        }
    }
}