function doGet(e) {
 return message("Error: Please Try Again");
    
}

function doPost(e) {
  if (!e.parameters.filename || !e.parameters.file || !e.parameters.imageformat) {
    return message("Error: Please Try Again");
  } else {
    var imgf = e.parameters.imageformat[0].toUpperCase();
    var mime =
        (imgf == 'BMP')  ? MimeType.BMP
      : (imgf == 'GIF')  ? MimeType.GIF
      : (imgf == 'JPEG') ? MimeType.JPEG
      : (imgf == 'JPG')  ? MimeType.JPEG
      : (imgf == 'PNG')  ? MimeType.PNG
      : (imgf == 'SVG')  ? MimeType.SVG
      : false;
    if (mime) {
      var data = Utilities.base64Decode(e.parameters.file, Utilities.Charset.UTF_8);
      var blob = Utilities.newBlob(data, mime, e.parameters.filename);

      var data2 = Utilities.base64Decode(e.parameters.file2, Utilities.Charset.UTF_8);
      var blob2 = Utilities.newBlob(data2, mime, e.parameters.filename2);
      
      var imageID = DriveApp.getFolderById('FOLDER ID').createFile(blob).getId();
      var imgID2 = DriveApp.getFolderById('FOLDER ID').createFile(blob2).getId();
      var lat = e.parameters.lat[0];
      var lon = e.parameters.lon[0];
      var add = e.parameters.address[0];
      var name = e.parameters.filename[0];
      var name2 = e.parameters.filename2[0];
      var viewurl = "https://drive.google.com/uc?export=view&id=" + imageID;
      var viewurl2 = "https://drive.google.com/uc?export=view&id=" + imgID2;
      
      var ss = SpreadsheetApp.openById('EXCEL ID');
      var sh = ss.getSheets()[0];
      sh.appendRow([lat,lon,add,imageID,name,viewurl,imgID2,name2,viewurl2]);
      
      return message("Success: Image Uploaded and Data Saved");
    } else {
      return message("Error: Please Try Again");
    }
  }
}

function message(msg) {
  return ContentService.createTextOutput(msg);
}