async Task SaveToJson()
{
try
{
// read list of photos from JSON file
FileStream stream1 = new FileStream(JsonFilePath, FileMode.Open);
StreamReader reader = new StreamReader(stream1);
string fileContents = reader.ReadToEnd();
reader.Close();
PhotoList = JsonConvert.DeserializeObject <List <PhotoItem> >(fileContents);
// query to see if photo object already in file
List <PhotoItem> otherObjects = (from photoItemObject in PhotoList
where photoItemObject.PhotoFilePath != PhotoItemObject.PhotoFilePath
select photoItemObject).ToList <PhotoItem>();
// photo object already exists; update it
if (otherObjects.Count != PhotoList.Count)
{
otherObjects.Add(PhotoItemObject);
PhotoList = otherObjects;
AllPhotos = PhotoList;
}
// add new photo item to list
else
{
PhotoList.Add(PhotoItemObject);
AllPhotos.Add(PhotoItemObject);
}
AllPhotos = (from photo in AllPhotos
orderby photo.PhotoTime
select photo).ToList();
PhotoSource = new ObservableCollection <PhotoItem>(AllPhotos);
// write updated photo list to JSON file
StreamWriter writer = new StreamWriter(JsonFilePath, false);
writer.WriteLine(JsonConvert.SerializeObject(PhotoList));
writer.Close();
// update locations
Location currentLocation = await GetCurrentDistance();
for (int i = 0; i < AllPhotos.Count; i++)
{
AllPhotos[i].DistanceToCurrent = Math.Round(Location.CalculateDistance(currentLocation, AllPhotos[i].PhotoLocation, DistanceUnits.Miles), 4);
}
}
catch (Exception e)
{
Console.WriteLine(e.Message);
}
}
private static readonly string[] extensions = { ".jpg", ".png", ".gif", ".bmp" }; // the extensions to be monitored
/// <summary>
/// Initializes a new instance of the <see cref="Photos"/> class.
/// </summary>
public Photos()
{
this.AllPhotos = new List <string>();
this.OutputDirPath = new Config().OutputDirPath;
this.ThumbnailsDirPath = Path.Combine(OutputDirPath, "Thumbnails");
string[] allPhotos = Directory.GetFiles(OutputDirPath, "*", SearchOption.AllDirectories);
foreach (string photo in allPhotos)
{
if (!photo.StartsWith(ThumbnailsDirPath) && extensions.Contains(Path.GetExtension(photo)))
{
AllPhotos.Add(photo);
}
}
}
async Task SortBy(string sortType)
{
Func <PhotoItem, Object> orderByFunc = null;
if (sortType == "Location")
{
// sort by closest to furthest
Location currentLocation = await GetCurrentDistance();
for (int i = 0; i < AllPhotos.Count; i++)
{
AllPhotos[i].DistanceToCurrent = Math.Round(Location.CalculateDistance(currentLocation, AllPhotos[i].PhotoLocation, DistanceUnits.Miles), 4);
}
orderByFunc = photoItem => photoItem.DistanceToCurrent;
PhotoSource = new ObservableCollection <PhotoItem>(AllPhotos.OrderBy(orderByFunc));
}
else if (sortType == "Rating")
{
// get top 5 rated photos
orderByFunc = photoItem => photoItem.Rating;
PhotoSource = new ObservableCollection <PhotoItem>(AllPhotos.OrderByDescending(orderByFunc).Take(5));
}
else if (sortType == "Time")
{
// sort by most recent photo
orderByFunc = photoItem => photoItem.PhotoTime;
PhotoSource = new ObservableCollection <PhotoItem>(AllPhotos.OrderBy(orderByFunc));
}
else
{
// sort by category
var categorizedPhotos = from photo in AllPhotos
where photo.Categories.IndexOf(sortType) != -1
select photo;
PhotoSource = new ObservableCollection <PhotoItem>(categorizedPhotos);
}
}
