public async Task <bool> ExistsAsync(User owner, CancellationToken cancellationToken = default)
{
var userAvatar = await UserAvatarStore.ReadAsync(owner, cancellationToken);
if (userAvatar == null)
{
return(false);
}
return(true);
}
public async Task <byte[]> GetImageAsync(User owner, CancellationToken cancellationToken = default)
{
var userAvatar = await UserAvatarStore.ReadAsync(owner, cancellationToken);
if (userAvatar == null)
{
return(null);
}
var avatar = await AvatarStore.ReadAsync(userAvatar.AvatarId);
if (avatar == null)
{
throw new Exception();
}
return(avatar.Image);
}
public async Task <bool> CreateAsync(User owner, CancellationToken cancellationToken = default)
{
var userAvatar = await UserAvatarStore.ReadAsync(owner, cancellationToken);
if (userAvatar != null)
{
return(false);
}
var newAvatar = new Avatar()
{
Id = Guid.NewGuid(),
Image = null,
LastUpdated = DateTime.Now
};
var result1 = await UserAvatarStore.CreateAsync(owner, newAvatar, cancellationToken);
var result2 = await AvatarStore.CreateAsync(newAvatar, cancellationToken);
return(result1 && result2);
}
public async Task <bool> DeleteAsync(User owner, CancellationToken cancellationToken = default)
{
var userAvatar = await UserAvatarStore.ReadAsync(owner, cancellationToken);
if (userAvatar == null)
{
return(false);
}
var avatar = await AvatarStore.ReadAsync(userAvatar.AvatarId);
if (avatar == null)
{
throw new Exception();
}
var result1 = await AvatarStore.DeleteAsync(avatar, cancellationToken);
var result2 = await UserAvatarStore.DeleteAsync(userAvatar, cancellationToken);
return(result1 && result2);
}
public async Task <bool> UpdateAsync(User owner, byte[] image, CancellationToken cancellationToken = default)
{
var userAvatar = await UserAvatarStore.ReadAsync(owner, cancellationToken);
if (userAvatar == null)
{
return(false);
}
var avatar = await AvatarStore.ReadAsync(userAvatar.AvatarId);
if (avatar == null)
{
throw new Exception();
}
avatar.Image = image;
avatar.LastUpdated = DateTime.Now;
var result = await AvatarStore.UpdateAsync(avatar, cancellationToken);
return(result);
}
public AvatarService(UserAvatarStore userAvatarStore, AvatarStore avatarStore)
{
UserAvatarStore = userAvatarStore;
AvatarStore = avatarStore;
}
