using AsbCloudApp.Data;
using AsbCloudApp.Data.ProcessMap;
using AsbCloudApp.Data.SAUB;
using AsbCloudApp.Exceptions;
using AsbCloudApp.Repositories;
using AsbCloudApp.Requests;
using AsbCloudApp.Services;
using AsbCloudApp.Services.Subsystems;
using AsbCloudDb.Model;
using AsbCloudApp.Data.Subsystems;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Threading;
using System.Threading.Tasks;

namespace AsbCloudInfrastructure.Services.ProcessMap
{
#nullable enable
    public partial class ProcessMapReportService : IProcessMapReportService
    {
        private readonly IWellService wellService;
        private readonly IWellOperationRepository wellOperationRepository;
        private readonly IProcessMapPlanRepository processMapPlanRepository;
        private readonly ITelemetryDataSaubService telemetryDataSaubService;
        private readonly ILimitingParameterRepository limitingParameterRepository;
        private readonly ISubsystemOperationTimeService subsystemOperationTimeService;

        public ProcessMapReportService(
            IWellService wellService,
            IWellOperationRepository wellOperationService,
            IProcessMapPlanRepository processMapPlanRepository,
            ITelemetryDataSaubService telemetryDataSaubService,
            ILimitingParameterRepository limitingParameterRepository,
            ISubsystemOperationTimeService subsystemOperationTimeService)
        {
            this.wellService = wellService;
            this.wellOperationRepository = wellOperationService;
            this.processMapPlanRepository = processMapPlanRepository;
            this.telemetryDataSaubService = telemetryDataSaubService;
            this.limitingParameterRepository = limitingParameterRepository;
            this.subsystemOperationTimeService = subsystemOperationTimeService;
        }

        /// <inheritdoc/>
        public async Task<IEnumerable<ProcessMapReportDto>> GetProcessMapAsync(int idWell, CancellationToken token)
        {
            var well = wellService.GetOrDefault(idWell)
                ?? throw new ArgumentInvalidException("idWell not found", nameof(idWell));

            var idTelemetry = well.IdTelemetry
                ?? throw new ArgumentInvalidException("telemetry by well not found", nameof(idWell));

            var processMapPlan = await processMapPlanRepository.GetByIdWellAsync(idWell, token);

            if(!processMapPlan.Any())
                return Enumerable.Empty<ProcessMapReportDto>();

            var telemetryDataStat = await telemetryDataSaubService.GetTelemetryDataStatAsync(idTelemetry, token);

            var result = CalcByIntervals(processMapPlan, telemetryDataStat);

            return result;
        }

        private IEnumerable<ProcessMapReportDto> CalcByIntervals(IEnumerable<ProcessMapPlanDto> processMapPlan, IEnumerable<TelemetryDataSaubStatDto> telemetryDataStat)
        {
            var result = new List<ProcessMapReportDto>(processMapPlan.Count() * 4);
            var intervals = GetProcessMapIntervals(processMapPlan);
            
            return result;
        }

        private IEnumerable<(double, double)> GetProcessMapIntervals(IEnumerable<ProcessMapPlanDto> processMapPlan)
        {
            
            return Enumerable.Empty<(double, double)>();
        }

        private static DateTime GetInterpolatedDate(WellOperationDto operation, double depth)
        {
            var ratio = (depth - operation.DepthStart) / (operation.DepthEnd - operation.DepthStart);
            var deltaHours = operation.DurationHours * ratio;
            var interpolatedDate = operation.DateStart + TimeSpan.FromHours(deltaHours);
            return interpolatedDate;
        }

        private static IEnumerable<(double min, double max)> SplitByIntervals(double min, double max)
        {
            const double step = 100;
            var iMin = min;
            var iMax = (1 + (int)(min / step)) * step;
            for (; iMax < max; iMax += step)
            {
                yield return (iMin, iMax);
                iMin = iMax;
            }
            yield return (iMin, max);
        }
    }
#nullable disable
}