Start work on copy files to internal

src/MayShow.Shared/Models/Settings.cs

@@ -24,6 +24,7 @@ class Settings : ChangeNotifier
     public string _reportDateFormat;
     public int _settingsVersion;
     private PDFSaveLocation _pdfOutputSaveLocation;
+    public bool _copyFilesToInternalDir;
 
     public Settings() : base()
     {
@@ -38,6 +39,10 @@ class Settings : ChangeNotifier
         _dataGridDateFormat = "dd/MM/yyyy";
         _reportDateFormat = "yyyy-MM-dd";
         _pdfOutputSaveLocation = PDFSaveLocation.BaseFolder;
+        _copyFilesToInternalDir = false;
+        #if IOS
+        _copyFilesToInternalDir = true;
+        #endif
     }
 
     public Settings(Settings other)
@@ -53,6 +58,7 @@ class Settings : ChangeNotifier
         _dataGridDateFormat = other.DataGridDateFormat;
         _reportDateFormat = other.ReportDateFormat;
         _pdfOutputSaveLocation = other.PDFOutputSaveLocation;
+        _copyFilesToInternalDir = other.CopyFilesToInternalDir;
     }
 
     [JsonInclude]
@@ -133,6 +139,13 @@ class Settings : ChangeNotifier
         set { _reportDateFormat = value; NotifyPropertyChanged(); }
     }
 
+    [JsonInclude]
+    public bool CopyFilesToInternalDir
+    {
+        get => _copyFilesToInternalDir;
+        set { _copyFilesToInternalDir = value; NotifyPropertyChanged(); }
+    }
+
     public static string SettingsFileName = "settings.json";
 
     public static string GetSettingsPath()

src/MayShow.Shared/ViewModels/CreatePDFReportViewModel.cs

@@ -344,6 +344,24 @@ class CreatePDFReportViewModel : BaseViewModel, ICanCheckShutdown, ILogger
             else
             {
                 var date = Utilities.CheckValidDateInString(filePath);
+                if (_settings.CopyFilesToInternalDir)
+                {
+                    // copy file to internal folder, then add report file based on that path
+                    // make sure file names are not conflicting with one another, too.
+                    var fileName = Path.GetFileName(filePath);
+                    var fileNameNoExt = Path.GetFileNameWithoutExtension(filePath);
+                    var extension = Path.GetExtension(filePath);
+                    var copyToPath = Path.Combine(_pdfReport.BaseFolder, fileName);
+                    var rnd = new Random();
+                    // TODO: test to make sure this works
+                    while (File.Exists(copyToPath))
+                    {
+                        fileName = fileNameNoExt + rnd.Next(1, 999999) + "." + extension;
+                        copyToPath = Path.Combine(_pdfReport.BaseFolder, fileName);
+                    }
+                    File.Copy(filePath, copyToPath);
+                    filePath = copyToPath;
+                }
                 ReportFiles.Add(new ReportFile()
                 {
                     Title = Path.GetFileName(filePath),