FarmMapsApiClient/FarmmapsDataDownload/DataDownloadApplication.cs

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9.3 KiB
C#
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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 FarmmapsDataDownload.Models;
using Microsoft.Extensions.Logging;
using Newtonsoft.Json;
using Newtonsoft.Json.Linq;
using static FarmmapsApiSamples.Constants;
namespace FarmmapsDataDownload
{
public class DataDownloadApplication : IApplication
{
private const string DownloadFolder = "Downloads";
private const string SettingsFile = "settings.json";
private readonly ILogger<DataDownloadApplication> _logger;
private readonly FarmmapsApiService _farmmapsApiService;
private readonly DataDownloadService _dataDownloadService;
private readonly GeneralService _generalService;
private Settings _settings;
public DataDownloadApplication(ILogger<DataDownloadApplication> logger, FarmmapsApiService farmmapsApiService,
GeneralService generalService, DataDownloadService dataDownloadService)
{
_logger = logger;
_farmmapsApiService = farmmapsApiService;
_generalService = generalService;
_dataDownloadService = dataDownloadService;
}
public async Task RunAsync()
{
var fieldsInputJson = File.ReadAllText("DataDownloadInput.json");
List<DataDownloadInput> fieldsInputs = JsonConvert.DeserializeObject<List<DataDownloadInput>>(fieldsInputJson);
if (!Directory.Exists(DownloadFolder))
Directory.CreateDirectory(DownloadFolder);
// !! 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 fieldsInputs)
{
try
{
await Process(roots, input);
}
catch (Exception ex)
{
_logger.LogError(ex.Message);
}
}
}
private async Task Process(List<UserRoot> roots, DataDownloadInput input)
{
// !!specify if you are using an already created cropfield:
bool useCreatedCropfield = input.UseCreatedCropfield;
var cropYear = input.CropYear;
var fieldName = input.fieldName;
bool storeSatelliteStatistics = input.StoreSatelliteStatistics;
bool storeSatelliteStatisticsCropYear = input.StoreSatelliteStatisticsCropYear;
string settingsfile = $"Settings_{fieldName}.json";
LoadSettings(settingsfile);
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;
}
// Use already created cropfield or create new one
Item cropfieldItem;
if (useCreatedCropfield == false || string.IsNullOrEmpty(_settings.CropfieldItemCode))
{
_logger.LogInformation("Creating cropfield");
cropfieldItem = await _generalService.CreateCropfieldItemAsync(myDriveRoot.Code,
$"DataCropfield {input.OutputFileName}", cropYear.Year, input.GeometryJson.ToString(Formatting.None));
_settings.CropfieldItemCode = cropfieldItem.Code;
SaveSettings(settingsfile);
}
else
{
_logger.LogInformation("Cropfield already exists, trying to get it");
cropfieldItem = await _farmmapsApiService.GetItemAsync(_settings.CropfieldItemCode);
}
// Get shadow data
if (input.GetShadowData)
{
_logger.LogInformation("Calculate shadow map for field");
var shadowItem = await _generalService.RunShadowTask(cropfieldItem);
if (shadowItem == null)
{
_logger.LogError("Something went wrong while obtaining the shadow map");
return;
}
_logger.LogInformation("Downloading shadow map");
await _farmmapsApiService.DownloadItemAsync(shadowItem.Code,
Path.Combine(DownloadFolder, $"{input.OutputFileName}_shadow.zip"));
}
// Get satellite data
if (input.GetSatelliteData)
{
// check if satellite task not yet done, do here and save taskcode
if (useCreatedCropfield == false || string.IsNullOrEmpty(_settings.SatelliteTaskCode))
{
var satelliteTaskCode = await _generalService.RunSatelliteTask(cropfieldItem);
_settings.SatelliteTaskCode = satelliteTaskCode;
SaveSettings(settingsfile);
}
int selectedLayer= 2;
if (input.SatelliteBand == "ndvi") selectedLayer = 0;
if (input.SatelliteBand == "wdvi") selectedLayer = 1;
if (input.SatelliteBand == "natural") selectedLayer = 2;
// Select a particular satellite item from satelliteTask
Item satalliteItem = await _generalService.FindSatelliteItem(cropfieldItem, _settings.SatelliteTaskCode, fieldName, selectedLayer, storeSatelliteStatisticsCropYear, DownloadFolder);
var satelliteBand = satalliteItem.Data["layers"][selectedLayer]["name"];
//Store satellite data to csv
if (storeSatelliteStatistics == true && (selectedLayer == 0 || selectedLayer ==1))
{
var satelliteStatistics = satalliteItem.Data["layers"][selectedLayer]["renderer"]["band"]["statistics"];
Console.WriteLine($"Satellite image date: {satalliteItem.DataDate}");
var SatelliteStatsFile = $"{DownloadFolder}/SatelliteDataStatistics_{fieldName}_{input.SatelliteBand}_{satalliteItem.DataDate.Value:yyyy-MM-dd}.csv";
using var w = new StreamWriter(SatelliteStatsFile);
{
foreach (var item in satelliteStatistics)
{
var line = string.Format("{0}", item);
w.WriteLine(line);
w.Flush();
}
}
var inputType = (satalliteItem.Data["layers"] as JArray)?[selectedLayer]["name"].ToString();
if (string.IsNullOrEmpty(inputType)) {
_logger.LogError("Could not get the input type name from the satellite item");
return;
}
// download the geotiff of needed inputtype
var SatelliteImageDate = (DateTime)satalliteItem.DataDate;
var SatelliteDate = SatelliteImageDate.ToString("yyyyMMdd");
_logger.LogInformation("Downloading geotiff file");
await _farmmapsApiService.DownloadItemAsync(satalliteItem.Code,
Path.Combine(DownloadFolder, $"satelliteGeotiff_{input.OutputFileName}_{inputType}_{SatelliteDate}.zip"));
}
}
// Get vanDerSat data
if (input.GetVanDerSatData)
{
// check if satellite task not yet done, do here and save taskcode
if (useCreatedCropfield == false || string.IsNullOrEmpty(_settings.VanDerSatTaskCode))
{
var vanDerSatTaskCode = await _generalService.RunVanDerSatTask(cropfieldItem);
_settings.VanDerSatTaskCode = vanDerSatTaskCode;
SaveSettings(settingsfile);
}
// Select a particular satellite item from satelliteTask
Item vanDerSatItem = await _generalService.FindVanDerSatItem(cropfieldItem, _settings.VanDerSatTaskCode, fieldName, input.StoreVanDerSatStatistics);
}
}
// Functions to save previously created cropfields
private void LoadSettings(string file)
{
if (File.Exists(file))
{
var jsonText = File.ReadAllText(file);
_settings = JsonConvert.DeserializeObject<Settings>(jsonText);
}
else
{
_settings = new Settings();
}
}
private void SaveSettings(string file)
{
if (_settings == null)
return;
var json = JsonConvert.SerializeObject(_settings);
File.WriteAllText(file, json);
}
private void SaveInfo(string file)
{
if (_settings == null)
return;
var json = JsonConvert.SerializeObject(_settings);
File.WriteAllText(file, json);
}
}
}