public Task SavePhilatelicItemAsync(UserIdentity collector, Guid collectionId, PhilatelicItem philatelicItem)
{
var path = $"{webRoot}{PersistencePathCreator.GetCollectionPersistencePath(collector, collectionId)}";
PhilatelicCollection collection;
return(Task.Run(() => {
if (!File.Exists(path))
{
throw new Exception("could not find required collection");
}
using (var streamReader = new StreamReader(new FileStream(path, FileMode.Open)))
{
collection = JsonConvert.DeserializeObject <PhilatelicCollection>(streamReader.ReadToEnd());
}
var item = collection.Items.SingleOrDefault(itm => itm.Id == philatelicItem.Id);
if (item == null)
{
// add new item
collection.Items.Add(philatelicItem);
}
else
{
// keep previous scans if no new scans provided
if (!philatelicItem.Scans.Any())
{
philatelicItem.Scans = item.Scans;
}
else
{
foreach (var scan in item.Scans)
{
scanRepository.RemoveScan(collector, collectionId, scan.Image);
}
}
// update existing item
var index = collection.Items.IndexOf(item);
collection.Items.RemoveAt(index);
collection.Items.Insert(index, philatelicItem);
}
using (var streamWriter = new StreamWriter(File.Create(path)))
{
streamWriter.Write(JsonConvert.SerializeObject(collection));
}
}));
}
public Task <IPhilatelicCollection> GetCollectionAsync(UserIdentity collector, Guid collectionId)
{
var path = $"{webRoot}{PersistencePathCreator.GetCollectionPersistencePath(collector, collectionId)}";
return(Task.Run(() =>
{
if (!File.Exists(path))
{
throw new Exception("could not find required collection");
}
using (var streamReader = new StreamReader(new FileStream(path, FileMode.Open)))
{
return JsonConvert.DeserializeObject <PhilatelicCollection>(streamReader.ReadToEnd()) as IPhilatelicCollection;
}
}));
}
public Task RemovePhilatelicItemAsync(UserIdentity collector, Guid collectionId, Guid itemId)
{
var path = $"{webRoot}{PersistencePathCreator.GetCollectionPersistencePath(collector, collectionId)}";
PhilatelicCollection collection;
return(Task.Run(() => {
if (!File.Exists(path))
{
throw new Exception("could not find required collection");
}
using (var streamReader = new StreamReader(new FileStream(path, FileMode.Open)))
{
collection = JsonConvert.DeserializeObject <PhilatelicCollection>(streamReader.ReadToEnd());
}
var item = collection.Items.SingleOrDefault(itm => itm.Id == itemId);
if (item == null)
{
return;
}
foreach (var scan in item.Scans)
{
scanRepository.RemoveScan(collector, collectionId, scan.Image);
}
var index = collection.Items.IndexOf(item);
collection.Items.RemoveAt(index);
using (var streamWriter = new StreamWriter(File.Create(path)))
{
streamWriter.Write(JsonConvert.SerializeObject(collection));
}
}));
}
