private async Task LoadData(bool lores = false)
{
Result = "";
if (Connectivity.NetworkAccess != NetworkAccess.Internet)
{
await Application.Current.MainPage.DisplayAlert("Benötige Internetverbindung", "Zum Laden der Dateien wird eine Internetverbindung benötigt.", "Okay");
}
else if (await Application.Current.MainPage.DisplayAlert("Große Dateimengen herunterladen?", "Beim Fortfahren werden mehrere Megabyte (bis zu 500MB) Bilddaten heruntergeladen. Am besten sollte dies mit WLAN heruntergeladen werden.", "Fortfahren", "Abbrechen"))
{
IsBusy = true;
await LoadJson();
try
{
Dictionary <string, string> filesList = new Dictionary <string, string>();
//var count = ((App)App.Current).TaxonImages.Count;
//count += tFilterItems.Count;
var tFilterItems = Load.FromFile <FilterItem>("TaxonFilterItems.json");
var i = 0;
foreach (var image in ((App)App.Current).TaxonImages)
{
string[] fileNames;
if (!lores)
{
fileNames = new string[] { $"{image.Title}-300x300.jpg", $"{image.Title}.jpg" };
}
else
{
fileNames = new string[] { $"{image.Title}-113x150.jpg", $"{image.Title}.jpg" };
}
if (!filesList.ContainsKey(fileNames[0]))
{
filesList.Add(fileNames[0], fileNames[1]);
}
}
foreach (FilterItem tFilter in tFilterItems)
{
string[] fileNames;
if (tFilter.ListSourceJson != null)
{
foreach (string img in tFilter.ListSourceJson)
{
if (img != null)
{
if (!lores)
{
fileNames = new string[] { $"{img.Trim()}-300x300.jpg", $"{img.Trim()}.jpg" };
}
else
{
fileNames = new string[] { $"{img.Trim()}-113x150.jpg", $"{img.Trim()}.jpg" };
}
if (!filesList.ContainsKey(fileNames[0]))
{
filesList.Add(fileNames[0], fileNames[1]);
}
}
}
}
}
//filesList = (List<string[]>)filesList.DistinctBy(x => x.).ToList();
var count = filesList.Count;
foreach (var fileName in filesList)
{
i++;
if (!_fileHelper.FileExists(fileName.Key))
{
try
{
var downloadFile = _fileHelper.DownloadFileAsync($"https://www.bodentierhochvier.de/wp-content/uploads/{fileName.Key}");
if (downloadFile != null)
{
await _fileHelper.CopyFileToLocalAsync(downloadFile, fileName.Value);
}
else
{
downloadFile = _fileHelper.DownloadFileAsync($"https://www.bodentierhochvier.de/wp-content/uploads/{fileName.Value}");
if (downloadFile != null)
{
await _fileHelper.CopyFileToLocalAsync(downloadFile, fileName.Value);
}
}
string percent = ((double)(i * 1000 / count) / 10).ToString("0.0");
DataStatus = $"Lade Bilder {i} von {count} ({percent} %)";
}
catch (Exception e)
{
throw e;
}
}
}
var versions = _fileHelper.GetAllText(VersionsFile);
var versionsJson = JObject.Parse(versions);
var versionDate = versionsJson["TaxonImages.json"].Value <string>();
var imageDate = versionsJson["Versions.json"].Value <string>();
Preferences.Set("imageDate", imageDate);
DataStatus = $"Daten vom Stand {DateTime.Parse(versionDate).ToString("dd.MM.yyyy")}.";
Result = "Daten erfolgreich aktualisiert.";
}
catch (Exception e)
{
var msg = e.Message;
Result = "Beim Laden der Bilder ist ein Problem aufgetreten.";
}
finally
{
IsBusy = false;
}
}
}
