FarmMapsApiClient_WURtest/FarmmapsZonering/ZoneringApplication.cs

using System;
using System.Collections.Generic;
using System.IO;
using System.Linq;
using System.Threading.Tasks;
using FarmmapsApi;
using FarmmapsApi.Models;
using FarmmapsApi.Services;
using FarmmapsHaulmkilling.Models;
using FarmmapsZonering.Models;
using FarmmapsZonering.Services;
using Microsoft.Extensions.Logging;
using Newtonsoft.Json;
using static FarmmapsApiSamples.Constants;

namespace FarmmapsZonering
{
    public class ZoneringApplication : IApplication
    {
        private const string DownloadFolder = "Downloads";
        private const string SettingsFile = "settings.json";

        private readonly ILogger<ZoneringApplication> _logger;
        private readonly FarmmapsApiService _farmmapsApiService;
        private readonly GeneralService _generalService;
        private readonly ZoneringService _zoneringService;

        private Settings _settings;
        
        public ZoneringApplication(ILogger<ZoneringApplication> logger, FarmmapsApiService farmmapsApiService,
            GeneralService generalService, ZoneringService zoneringService)
        {
            _logger = logger;
            _farmmapsApiService = farmmapsApiService;
            _generalService = generalService;
            _zoneringService = zoneringService;
        }
        
        public async Task RunAsync()
        {
            if (!Directory.Exists(DownloadFolder))
                Directory.CreateDirectory(DownloadFolder);

            // Load settings from previous cropfield
            LoadSettings();

            // Read input data from separate file
            var zoneringInputJson = File.ReadAllText("ZoneringInput.json");
            List<ZoneringInput> zoneringInputs = JsonConvert.DeserializeObject<List<ZoneringInput>>(zoneringInputJson);
            
            // !! 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();
            
            
            foreach (var input in zoneringInputs)
            {
                try
                {
                    await ZoningAsync(roots, input);
                }
                catch (Exception ex)
                {
                    _logger.LogError(ex.Message);
                }
            }

        }
        
        private async Task ZoningAsync(List<UserRoot> roots, ZoneringInput input)
        {
            var myDrive = roots.SingleOrDefault(r => r.Name == "My drive");
            if (myDrive == null)
            {
                _logger.LogError("Could not find a needed root item");
                return;
            }

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

            Item cropfieldItem;
            if (string.IsNullOrEmpty(_settings.CropfieldItemCode) || input.CreateNewCropfield == true)
            {
                _logger.LogInformation("Creating cropfield");

                cropfieldItem = await _generalService.CreateCropfieldItemAsync(myDrive.Code, input.CropFieldName, input.CropYear,
                input.GeometryJson.ToString(Formatting.None));
                
                _settings.CropfieldName = cropfieldItem.Name;
                _settings.CropfieldItemCode = cropfieldItem.Code;
                SaveSettings();
            }
            else
            {
                _logger.LogInformation("Cropfield already exists trying to get");
                cropfieldItem = await _farmmapsApiService.GetItemAsync(_settings.CropfieldItemCode);
            }
            
            var inputOneItem = await _generalService.UploadDataAsync(uploadedRoot, GEOTIFF_PROCESSED_ITEMTYPE,  
                Path.Combine("Data", $"{input.InputItemOne}"),Path.GetFileNameWithoutExtension($"{input.InputItemOne}"));
            if (inputOneItem == null) {
                _logger.LogError("Could not find item for uploaded data");
                return;
            }
            
            var inputTwoItem = await _generalService.UploadDataAsync(uploadedRoot, GEOTIFF_PROCESSED_ITEMTYPE,
                Path.Combine("Data", $"{input.InputItemTwo}"), Path.GetFileNameWithoutExtension($"{input.InputItemTwo}"));
            if (inputTwoItem == null) {
                _logger.LogError("Could not find item for uploaded data");
                return;
            }

            var outputItem = await _zoneringService.CreateApplicationMapAsync(cropfieldItem, input.Formula, new Output()
                {
                    Name = input.LayerName,
                    Quantity = input.CalculatedQuantity,
                    Unit = input.CalculatedUnit,
                    
                }, new InputParameter()
                {
                    ItemCode = inputOneItem.Code,
                    LayerName = inputOneItem.Data["layers"][0]["name"].ToString()
                },
                new InputParameter()
                {
                    ItemCode = inputTwoItem.Code,
                    LayerName = inputTwoItem.Data["layers"][0]["name"].ToString()
                });
            
             _logger.LogInformation("Downloading output");



            await _farmmapsApiService.DownloadItemAsync(outputItem.Code,
                Path.Combine(DownloadFolder, $"{input.OutputFileName}.zip"));
        }

        private void LoadSettings()
        {
            if (File.Exists(SettingsFile))
            {
                var jsonText = File.ReadAllText(SettingsFile);
                _settings = JsonConvert.DeserializeObject<Settings>(jsonText);
            }
            else
            {
                _settings = new Settings();
            }
        }

        private void SaveSettings()
        {
            if (_settings == null)
                return;

            var json = JsonConvert.SerializeObject(_settings);
            File.WriteAllText(SettingsFile, json);
        }
    }
}