public static async Task<InvitationsIssued> InviteAsync(
ApplicationDbContext dbContext,
InvitationRequest request)
{
using (var tx = dbContext.Database.BeginTransaction())
{
bool succeeded = false;
try
{
InvitationsIssued current = await GetCurrentInvitations(dbContext);
if (!current.Accepted.Contains(request.Email) &&
!current.Outstanding.Contains(request.Email))
{
dbContext.Invitations.Add(new Invitation
{
Email = request.Email
});
await dbContext.SaveChangesAsync();
current.Outstanding.Add(request.Email);
}
tx.Commit();
succeeded = true;
return current;
}
finally
{
if (!succeeded)
{
tx.Rollback();
}
}
}
}
public static async Task<InvitationsIssued> UninviteAsync(
ApplicationDbContext dbContext,
InvitationRequest request)
{
using (var tx = dbContext.Database.BeginTransaction())
{
bool succeeded = false;
try
{
Invitation existing = await dbContext.Invitations.SingleOrDefaultAsync(e => e.Email == request.Email);
if (existing != null)
{
dbContext.Invitations.Remove(existing);
await dbContext.SaveChangesAsync();
}
InvitationsIssued current = await GetCurrentInvitations(dbContext);
tx.Commit();
succeeded = true;
return current;
}
finally
{
if (!succeeded)
{
tx.Rollback();
}
}
}
}
/// <summary>
/// Cancel an invitation.
/// </summary>
/// <param name="request">Who to uninvite.</param>
/// <returns></returns>
/// <returns>Lists of the outstanding and accepted invitations.</returns>
public async Task<InvitationsIssued> PostUninviteAsync(InvitationRequest request)
{
UserInfo user = await GetUserInfoAsync();
if (!MasterEmails.Contains(user.Email))
{
throw new HttpResponseException(HttpStatusCode.Forbidden);
}
return await InvitationOperations.UninviteAsync(DbContext, request);
}
