public async Task Add(Media media)
{
DataManager dataManager = DataManager.Instance;
MemoryStream stream = null;
DataObjects.Media dataMedia = null;
FileImageSource fileImageSource = null;
fileImageSource = media.Image as FileImageSource;
Stream downsampleStream = null;
// If this is still from a file downsample it to be stored in the database
if (fileImageSource != null)
{
downsampleStream = await ImageService.Instance.LoadFile(fileImageSource.File).DownSample(width: 300).AsJPGStreamAsync();
}
else
{
StreamImageSource streamsource = media.Image as StreamImageSource;
if (streamsource != null)
{
downsampleStream = await ImageService.Instance.LoadStream(
sct => {
return(((IStreamImageSource)streamsource).GetStreamAsync());
}).DownSample(width: 300).AsJPGStreamAsync();
}
}
if (downsampleStream != null)
{
stream = new MemoryStream();
await downsampleStream.CopyToAsync(stream);
if (Device.RuntimePlatform == Device.iOS)
{
// Lets use the downsample one rather the big-size image selected by user to lower the app memory usage
// (Actually we are using the downsample one from datamanger when the app starts)
stream.Seek(0, SeekOrigin.Begin);
media.Image = ImageSource.FromStream(() => stream);
}
}
if (stream != null)
{
// Add to the Data Manager
dataMedia = new DataObjects.Media()
{
Id = Guid.NewGuid().ToString(),
Type = (byte)MediaType.Image,
Data = stream.ToArray()
};
await dataManager.AddMedia(dataMedia);
media.Id = dataMedia.Id;
_media.Add(media);
}
}
/// <summary>
/// Deletes Pump From Local Tables the Syncs Changes with mobile api
/// </summary>
/// <param name="pump">DataObjects.Pump row to delete</param>
/// <returns></returns>
public async Task RemoveMedia(DataObjects.Media media)
{
try
{
await mediaTable.DeleteAsync(media);
await SyncMedia();
}
catch (Exception ex)
{
System.Diagnostics.Debug.WriteLine("Error removing media: " + ex.Message);
}
}
public async Task Remove(string id)
{
DataManager dataManager = DataManager.Instance;
DataObjects.Media dataMedia;
if (id != Guid.Empty.ToString())
{
// Remove media from Data Manager
dataMedia = new DataObjects.Media()
{
Id = id,
};
await dataManager.RemoveMedia(dataMedia);
}
}
/// <summary>
/// Adds or Updates a Child and Syncs with mobile API values
/// </summary>
/// <param name="child">DataObjects.HistoricalSession row to add or update</param>
/// <returns>System.Threading.Tasks.Task</returns>
public async Task AddMedia(DataObjects.Media media)
{
// Make sure the user is logged in so UserId and ProfileId are valid
if (_isLoggedIn)
{
media.ProfileId = _currentProfileId;
if (null == await mediaTable.LookupAsync(media.Id))
{
await mediaTable.InsertAsync(media);
}
else
{
await mediaTable.UpdateAsync(media);
}
await SyncMedia();
}
}
public async Task Update(Media media)
{
DataManager dataManager = DataManager.Instance;
MemoryStream stream = null;
DataObjects.Media dataMedia = null;
FileImageSource fileImageSource = null;
fileImageSource = media.Image as FileImageSource;
// If this is still from a file downsample it to be stored in the database
if (fileImageSource != null)
{
stream = new MemoryStream();
var output = await ImageService.Instance.LoadFile(fileImageSource.File).DownSample(width: 300).AsJPGStreamAsync();
await output.CopyToAsync(stream);
}
else
{
StreamImageSource streamsource = media.Image as StreamImageSource;
if (streamsource?.Stream != null)
{
stream = (await((IStreamImageSource)streamsource).GetStreamAsync()) as MemoryStream;
}
}
if (stream != null)
{
// Add to the Data Manager
dataMedia = new DataObjects.Media()
{
Id = media.Id,
Type = (byte)media.Type,
Data = stream.ToArray()
};
await dataManager.AddMedia(dataMedia);
}
}
