using AsbCloudApp.Data;
using AsbCloudApp.Data.ProcessMap;
using AsbCloudApp.Services;
using AsbCloudDb.Model;
using DocumentFormat.OpenXml.Bibliography;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Threading;
using System.Threading.Tasks;

namespace AsbCloudInfrastructure.Services.ProcessMap
{
#nullable enable
    public class ProcessMapService : IProcessMapService
    {
        private readonly IWellOperationService wellOperationService;
        private readonly IProcessMapRepository processMapRepository;

        public ProcessMapService(IWellOperationService wellOperationService,
            IProcessMapRepository processMapRepository)
        { 
            this.wellOperationService = wellOperationService;
            this.processMapRepository = processMapRepository;
        }

        public async Task<IEnumerable<ProcessMapReportDto>> GetProcessMapAsync(int idWell, CancellationToken token)
        {
            var categoryIds = new int[] { WellOperationCategory.IdSlide, WellOperationCategory.IdRotor };
            var allOperations = (await wellOperationService.GetOperationsByIdWellAsync(idWell, token).ConfigureAwait(false))
                .Where(x => categoryIds.Contains(x.IdCategory))
                .Where(x => x.IdType == 1)
                .OrderBy(x => x.IdWellSectionType)
                    .ThenBy(x => x.DateStart)
                .ToList();
            var processMapDtos = await processMapRepository.GetByIdWellAsync(idWell, token).ConfigureAwait(false);

            var result = allOperations
                .GroupBy(x => x.IdWellSectionType)
                .SelectMany(x => handleSections(allOperations, processMapDtos!, x))
                .ToList();

            return result;
        }

        private static List<ProcessMapReportDto> handleSections(IEnumerable<WellOperationDto> allWellOperation, IEnumerable<ProcessMapDto> processMap, IEnumerable<WellOperationDto> wellOperation)
        {
            var result = new List<ProcessMapReportDto>();
            var minDepth = wellOperation.Min(o => o.DepthStart);
            var maxDepth = wellOperation.Max(o => o.DepthEnd);

            for (var depth = minDepth; depth <= maxDepth; depth += 100)
            {
                var currentDepth = result.Count() > 0 ? depth + (100 - depth % 100) : depth;
                var operation = allWellOperation.First(x => x.DepthEnd >= currentDepth);
                var minDate = operation.DateStart;
                var maxDate = operation.DateStart.AddHours(operation.DurationHours);
                var currentDate = GetDate(currentDepth, minDepth, maxDepth, minDate, maxDate);
                var currentHours = GetHourse(currentDepth, minDepth, maxDepth, operation.DurationHours);
                var processMapData = processMap.FirstOrDefault(x => x.IdWellSectionType == operation.IdWellSectionType);

                var dto = GetRecord(currentDepth, currentDate, currentHours, operation, processMap);

                if (operation.DepthStart < currentDepth)
                {
                    var prevOperation = allWellOperation.FirstOrDefault(x => x.DepthEnd == operation.DepthStart);
                    if (prevOperation is not null)
                    {
                        var prevDepth = currentDepth - prevOperation.DepthEnd;
                        var prevMinDate = prevOperation.DateStart;
                        var prevMaxDate = operation.DateStart.AddHours(operation.DurationHours);
                        var prevDate = GetDate(prevDepth, prevOperation.DepthStart, prevOperation.DepthEnd, minDate, maxDate);
                        var prevHours = GetHourse(currentDepth, prevOperation.DepthStart, prevOperation.DepthEnd, prevOperation.DurationHours);

                        if (dto.IdCategory != prevOperation.IdCategory)
                            FillRecordRow(prevDepth, prevHours, dto, prevOperation.IdCategory, processMap);
                        
                        dto.MechDrillingTime = currentHours + prevHours;
                    }
                }

                result.Add(dto);
            }

            return result;
        }

        private static ProcessMapReportDto GetRecord(double depth, DateTimeOffset sate, double hours, WellOperationDto operation, IEnumerable<ProcessMapDto> processMap)
        { 
            var dto = new ProcessMapReportDto
            {
                IdWell = operation.IdWell,
                Depth = depth,
                Date = sate,
                MechDrillingTime = hours,
                Category = operation.IdCategory == WellOperationCategory.IdSlide ? "Слайд" : "Ротор",
                IdCategory = operation.IdCategory,
                IdWellSectionType = operation.IdWellSectionType,
                WellSectionTypeName = operation.WellSectionTypeName
            };
            FillRecordRow(depth, hours, dto, operation.IdCategory, processMap);

            return dto;
        }

        private static void FillRecordRow(double depth, double hours, ProcessMapReportDto dto, int idCategory, IEnumerable<ProcessMapDto> processMap)
        {
            var row = new ProcessMapReportRowDto {
                SectionPenetration = depth,
                ActualMechanicalSpeed = depth / hours,
                PercentageADFSystemUsage = dto.Depth / depth * 100
            };

            var processMapData = processMap.FirstOrDefault(x => x.IdWell == dto.IdWell && x.IdWellSectionType == dto.IdWellSectionType);
            if (processMapData is not null)
            {
                row.PressureDrop = new ProcessMapReportParamsDto
                {
                    SetPointPlan = processMapData.Pressure.Plan
                };
                row.Load = new ProcessMapReportParamsDto
                {
                    SetPointPlan = processMapData.AxialLoad.Plan
                };
                row.TopDriveTorque = new ProcessMapReportParamsDto
                {
                    SetPointPlan = processMapData.TopDriveTorque.Plan
                };
                row.SpeedL​imit = new ProcessMapReportParamsDto
                {

                };
            }

            if (idCategory == WellOperationCategory.IdSlide)
                dto.Slide = row;
            else
                dto.Rotor = row;
        }

        private static DateTimeOffset GetDate(double depth, double deptStart, double deptEnd, DateTimeOffset dateStart, DateTimeOffset dateEnd)
        {
            var a = depth - deptStart;
            var b = deptEnd - deptStart;
            var c = dateEnd - dateStart;
            var result = dateStart + (a / b) * c;
            return result;
        }

        private static double GetHourse(double depth, double deptStart, double deptEnd, double hourse)
        {
            var a = depth - deptStart;
            var b = deptEnd - deptStart;
            var result = 0 + (a / b) * hourse;
            return result;
        }
    }
#nullable disable
}