private async Task CSVExport_Helper()
{
var result = await CheckExternalFilePermissions();
if (!result)
{
DependencyService.Get <ICrossPlatformToast>().ShortAlert("Storage permission required for data export!");
}
try
{
if (selectedProject == null)
{
DependencyService.Get <ICrossPlatformToast>().ShortAlert("Select a Project first");
return;
}
// get Trips for selected Project
List <Trip> selectedProjectTrips = DataFunctions.GetTrips(selectedProject.ProjectName);
// get Sites for each Trip
Dictionary <string, List <Site> > sitesForTrips = new Dictionary <string, List <Site> >();
foreach (Trip trip in selectedProjectTrips)
{
List <Site> sites = DataFunctions.GetSites(trip.TripName);
sitesForTrips.Add(trip.TripName, sites);
}
if (sitesForTrips.Count == 0)
{
DependencyService.Get <ICrossPlatformToast>().ShortAlert("No trips.");
return;
}
// get Specimen for each Site
Dictionary <string, List <Specimen> > specimenForSites = new Dictionary <string, List <Specimen> >();
foreach (var trip in sitesForTrips)
{ // trip, list<site>
foreach (var site in trip.Value)
{ // go through list<site>
List <Specimen> specimenList = DataFunctions.GetSpecimen(site.SiteName);
specimenForSites.Add(site.SiteName, specimenList);
}
}
if (specimenForSites.Count == 0)
{
DependencyService.Get <ICrossPlatformToast>().ShortAlert("No sites.");
return;
}
// csv content string to write to file
string csvContent = "";
switch (AppVariables.DataExportFormat)
{
case "Darwin Core":
csvContent = CSVExport.CreateCSVForExport(selectedProject, CSVExport.DataExportType.DarwinCore, selectedProjectTrips, specimenForSites, sitesForTrips);
break;
default:
csvContent = CSVExport.CreateCSVForExport(selectedProject, CSVExport.DataExportType.DarwinCore, selectedProjectTrips, specimenForSites, sitesForTrips);
break;
}
string filePath = DependencyService.Get <ICrossPlatform_GetShareFolder>().GetShareFolder();
// save to local app data
// to share in email must use temporary file, can't use internal storage
string fileName = selectedProject.ProjectName.Trim() + ".csv";
string localFileLocation = Path.Combine(filePath, fileName);
File.WriteAllText(localFileLocation, csvContent, System.Text.Encoding.UTF8); // create csvfile with utf8 encoding, in permanent local storage
if (DeviceInfo.Platform == DevicePlatform.iOS)
{
await SendEmail("Project Export", "Set your recipients and send the export data...", new List <string>(), localFileLocation);
}
else
{
CrossShareFile.Current.ShareLocalFile(localFileLocation, "Share Specimen Export");
}
}
catch (Exception ex)
{
DependencyService.Get <ICrossPlatformToast>().ShortAlert("Export failed.");
Debug.WriteLine(ex.Message);
}
}