using System;
using System.IO;
using System.Linq;
using System.Threading.Tasks;
using FarmmapsApi;
using FarmmapsApi.Services;
using Microsoft.Extensions.Logging;

namespace FarmmapsNbs
{
    public class NbsApplication : IApplication
    {
        private const string DownloadFolder = "Downloads";

        private readonly ILogger<NbsApplication> _logger;
        private readonly FarmmapsApiService _farmmapsApiService;
        private readonly NitrogenService _nitrogenService;
        private readonly GeneralService _generalService;

        public NbsApplication(ILogger<NbsApplication> logger, FarmmapsApiService farmmapsApiService,
            GeneralService generalService, NitrogenService nitrogenService)
        {
            _logger = logger;
            _farmmapsApiService = farmmapsApiService;
            _generalService = generalService;
            _nitrogenService = nitrogenService;
        }

        public async Task RunAsync()
        {
            try
            {
                // !! this call is needed the first time an api is called with a fresh clientid and secret !!
                await _farmmapsApiService.GetCurrentUserCodeAsync();
                var roots = await _farmmapsApiService.GetCurrentUserRootsAsync();

                if (!Directory.Exists(DownloadFolder))
                    Directory.CreateDirectory(DownloadFolder);

                var plantingDate = new DateTime(DateTime.UtcNow.Year, 2, 1);
                var measurementDate = plantingDate.AddMonths(5);

                var uploadedRoot = roots.SingleOrDefault(r => r.Name == "Uploaded");
                if (uploadedRoot == null)
                {
                    _logger.LogError("Could not find a needed root item");
                    return;
                }

                var myDriveRoot = roots.SingleOrDefault(r => r.Name == "My drive");
                if (myDriveRoot == null)
                {
                    _logger.LogError("Could not find a needed root item");
                    return;
                }

                var cropfieldItem = await _generalService.CreateCropfieldItemAsync(myDriveRoot.Code, "VRA NBS cropfield", 2020,
                    @"{ ""type"": ""Polygon"", ""coordinates"": [ [ [ 3.40843828875524, 50.638966444680605 ], [ 3.408953272886064, 50.639197789621612 ], [ 3.409242951459603, 50.639469958681836 ], [ 3.409328782148028, 50.639612846807708 ], [ 3.409457528180712, 50.639789755314411 ], [ 3.409639918393741, 50.640014292074966 ], [ 3.409833037442765, 50.640211611372706 ], [ 3.410069071836049, 50.640395321698435 ], [ 3.410380208081761, 50.640572227259661 ], [ 3.410605513638958, 50.640715112034222 ], [ 3.411925160474145, 50.641177783561204 ], [ 3.411935889310142, 50.640728720085136 ], [ 3.412590348309737, 50.63948356709389 ], [ 3.413244807309242, 50.638224772339846 ], [ 3.413400375432099, 50.637901562841307 ], [ 3.413539850300779, 50.637449065809889 ], [ 3.413475477284437, 50.637418445552932 ], [ 3.40999396998362, 50.637449065810451 ], [ 3.409940325803365, 50.638102293212661 ], [ 3.409575545377398, 50.638483338338325 ], [ 3.409060561246574, 50.638707881340494 ], [ 3.40843828875524, 50.638966444680605 ] ] ] }");

                var dataPath = Path.Combine("Data", "Scan_1_20190605.zip");
                var isariaShapeItem =
                    await _generalService.UploadZipWithShapeAsync(uploadedRoot, dataPath, "Scan_1_20190605");
                if (isariaShapeItem == null)
                {
                    _logger.LogError("Could not find isaria shape item");
                    return;
                }

                _logger.LogInformation($"Converting shape to geotiff");
                var isariaGeotiffItem = await _generalService.ShapeToGeotiff(isariaShapeItem);
                if (isariaGeotiffItem == null)
                {
                    _logger.LogError("Something went wrong with isaria shape to geotiff transformation");
                    return;
                }

                _logger.LogInformation($"Calculating targetN with targetYield: {60}");
                var targetNItem = await _nitrogenService.CreateTargetNItem(cropfieldItem);
                var targetN = await _nitrogenService.CalculateTargetN(cropfieldItem, targetNItem, plantingDate, measurementDate,
                    "consumption", "irmi", 60);
                _logger.LogInformation($"TargetN: {targetN}");

                _logger.LogInformation("Calculating uptake map");
                var uptakeMapItem =
                    await _nitrogenService.CalculateUptakeMap(cropfieldItem, isariaGeotiffItem, plantingDate, measurementDate);

                _logger.LogInformation("Downloading uptake map");
                await _farmmapsApiService.DownloadItemAsync(uptakeMapItem.Code,
                    Path.Combine(DownloadFolder, $"{uptakeMapItem.Name}.zip"));

                _logger.LogInformation("Calculating appliance map");
                var applianceMapItem =
                    await _nitrogenService.CalculateApplicationMap(cropfieldItem, isariaGeotiffItem, plantingDate, measurementDate,
                        "irmi", targetN);

                _logger.LogInformation("Downloading appliance map");
                await _farmmapsApiService.DownloadItemAsync(applianceMapItem.Code,
                    Path.Combine(DownloadFolder, $"{applianceMapItem.Name}.zip"));
            }
            catch (Exception ex)
            {
                _logger.LogError(ex.Message);
            }
        }
    }
}