FarmMapsApiClient/FarmmapsHaulmkilling/HaulmkillingApplication.cs

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C#
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using System;
using System.IO;
using System.Linq;
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using System.Threading.Tasks;
using FarmmapsApi;
using FarmmapsApi.Models;
using FarmmapsApi.Services;
using FarmmapsHaulmkilling.Models;
using Microsoft.Extensions.Logging;
using Newtonsoft.Json;
using Newtonsoft.Json.Linq;
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using static FarmmapsApiSamples.Constants;
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namespace FarmmapsHaulmkilling
{
public class HaulmkillingApplication : IApplication
{
private const string DownloadFolder = "Downloads";
private const string SettingsFile = "settings.json";
private readonly ILogger<HaulmkillingApplication> _logger;
private readonly FarmmapsApiService _farmmapsApiService;
private readonly HaulmkillingService _haulmkillingService;
private readonly GeneralService _generalService;
private Settings _settings;
public HaulmkillingApplication(ILogger<HaulmkillingApplication> logger, FarmmapsApiService farmmapsApiService,
GeneralService generalService, HaulmkillingService haulmkillingService)
{
_logger = logger;
_farmmapsApiService = farmmapsApiService;
_generalService = generalService;
_haulmkillingService = haulmkillingService;
}
public async Task RunAsync()
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{
if (!Directory.Exists(DownloadFolder))
Directory.CreateDirectory(DownloadFolder);
LoadSettings();
// !! 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();
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;
}
var agents = await _haulmkillingService.GetHaulmkillingAgents();
if (agents == null || agents.Count == 0)
{
_logger.LogError("No valid agents found for haulmkilling");
return;
}
Item cropfieldItem;
if (string.IsNullOrEmpty(_settings.CropfieldItemCode))
{
_logger.LogInformation("Creating cropfield");
cropfieldItem = await _generalService.CreateCropfieldItemAsync(myDrive.Code, "Cropfield VRA Haulmkilling", 2020,
@"{""type"":""Polygon"",""coordinates"":[[[4.617786844284247,52.22533706956424],[4.618642601314543,52.225938364585989],[4.6192153806397,52.22563988897754],[4.619192414656403,52.2256242822442],[4.620306732153958,52.225031745661528],[4.620542019225217,52.22519855319158],[4.621157509147853,52.22487436515405],[4.623387917230182,52.22367660757213],[4.624563444939009,52.22304740241544],[4.624562779355982,52.223046635247019],[4.624534908813479,52.22302596787506],[4.627873021330343,52.221240670658399],[4.627504935938338,52.220104419135129],[4.627324878706837,52.22020569669098],[4.627320696113512,52.22020660117888],[4.626707169518044,52.22053923770041],[4.624700376420229,52.221619047547488],[4.623471571183885,52.22227447969577],[4.623471511010673,52.22227500174403],[4.623468838689317,52.22228052566992],[4.617786844284247,52.22533706956424]]]}");
_settings.CropfieldItemCode = cropfieldItem.Code;
SaveSettings();
}
else
{
_logger.LogInformation("Cropfield already exists trying to get");
cropfieldItem = await _farmmapsApiService.GetItemAsync(_settings.CropfieldItemCode);
}
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ItemTaskStatus taskStatus;
if (string.IsNullOrEmpty(_settings.SatelliteTaskCode))
{
_logger.LogInformation("Gathering satellite information for cropfield, this might take a while!");
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taskStatus = await _generalService.RunAndWaitForTask(cropfieldItem, SATELLITE_TASK, null, 20);
if (taskStatus.State == ItemTaskState.Error)
{
_logger.LogError($"Something went wrong when trying to process satellite data; {taskStatus.Message}");
return;
}
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_settings.SatelliteTaskCode = taskStatus.Code;
SaveSettings();
}
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else
{
taskStatus = await _farmmapsApiService.GetTaskStatusAsync(_settings.CropfieldItemCode, _settings.SatelliteTaskCode);
}
// find ndvi or wdvi satellite data geotiffs
var temporalItem = await _generalService.FindChildItemAsync(cropfieldItem.Code, TEMPORAL_ITEMTYPE,
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"Cropfield VRA Haulmkilling, Satellite", item => item.SourceTask == SATELLITE_TASK &&
taskStatus.Finished >= item.Created &&
taskStatus.Finished <= item.Created.Value.AddHours(1));
if (temporalItem == null)
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{
_logger.LogError("Temporal item not found");
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return;
}
var satelliteTiffs = await _farmmapsApiService.GetItemChildrenAsync(temporalItem.Code);
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var firstSatelliteItem = satelliteTiffs.FirstOrDefault();
if (firstSatelliteItem == null)
{
_logger.LogError("Satellite item not found");
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return;
}
// must be ndvi or wdvi
var inputType = (firstSatelliteItem.Data["layers"] as JArray)?[0]["name"].ToString();
if (string.IsNullOrEmpty(inputType))
{
_logger.LogError("Could not get the input type name from the satellite item");
return;
}
var selectedAgent = agents[0];
var selectedOption = selectedAgent.ValidOptions[0];
_logger.LogInformation("Calculating application map");
var applianceMapItem = await _haulmkillingService.CalculateApplicationMapAsync(cropfieldItem,
firstSatelliteItem, inputType, selectedOption, selectedAgent);
if (applianceMapItem == null)
{
return;
}
_logger.LogInformation("Downloading application map");
await _farmmapsApiService.DownloadItemAsync(applianceMapItem.Code, Path.Combine(DownloadFolder,
$"{applianceMapItem.Name}_{Guid.NewGuid():N}.zip"));
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}
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);
}
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}
}