/// <summary>
/// Resends an activation link for a user; expects a user_created email template and a valid user identifier
/// </summary>
/// <param name="context"></param>
/// <param name="userId"></param>
/// <param name="ea"></param>
/// <param name="emailTpl"></param>
/// <returns></returns>
public static async Task ResendActivationLink(DbContext context, Guid userId, IEmailAccount ea = null, IEmailTemplate emailTpl = null)
{
//Note: MBR seems to not like resending an activation link with a new password... It simply does not generate a new one but rather regenerates the verification key
//because of that need to fake an account creation with some random email and then grab some auto generated data out of it
//
//basically a new account is created in order to get a new token and a new pass and verification key with its creation date
//such user account is then destroyed but the necessary details are set on the account that we try to resend a link for.
if (userId == default(Guid))
{
throw new InvalidOperationException("You cannot resend an activation link - this user has not yet been created...");
}
var mbrCtx = new CustomDbContext("MapHiveMbr");
//get the mbr user object
var mbrUser = await mbrCtx.Users.FirstOrDefaultAsync(u => u.ID == userId);
if (mbrUser == null)
{
throw new InvalidOperationException("User does not exist in MBR.");
}
//need user account service to properly create a MBR user
var userAccountService = CustomUserAccountService.GetInstance("MapHiveMbr");
//wire up an evt listener - this is the way mbr talks
AccountCreatedEvent <CustomUserAccount> e = null;
userAccountService.Configuration.AddEventHandler(
new MembershipRebootEventHandlers.AccountCreatedEventHandler <CustomUserAccount>(evt => e = evt));
//rrnd email - after all need to avoid scenarios when two folks try the same resend activation procedure at once
var rndEmail = $"{DateTime.Now.Ticks}@somedomain.com";
//finally a new rnd user, so we can get a properly recreated verification key and a new pass...
var newMbrAccount = userAccountService.CreateAccount(rndEmail, Cartomatic.Utils.Crypto.Generator.GenerateRandomString(10), rndEmail);
//update the account in question with
//mbrUser.VerificationKey = newMbrAccount.VerificationKey;
//mbrUser.VerificationPurpose = newMbrAccount.VerificationPurpose;
//mbrUser.HashedPassword = newMbrAccount.HashedPassword;
//mbrUser.VerificationKeySent = newMbrAccount.VerificationKeySent
//because the properties are read only, we need to do some crazy hocus-pocus again
//note: looks like the type returned via mbrCtx.Users.FirstOrDefaultAsync is somewhat more dynamic and does not
//map properly. therefore need to use a 'barebone' object instance
var obj = new CustomUserAccount();
//Warning - this sql is postgresql specific!
var updateSql = $@"UPDATE
{mbrCtx.GetTableSchema(obj)}.""{mbrCtx.GetTableName(obj)}""
SET
""{mbrCtx.GetTableColumnName(obj, nameof(mbrUser.VerificationKey))}"" = '{newMbrAccount.VerificationKey}',
""{mbrCtx.GetTableColumnName(obj, nameof(mbrUser.VerificationPurpose))}"" = {(int)newMbrAccount.VerificationPurpose},
""{mbrCtx.GetTableColumnName(obj, nameof(mbrUser.HashedPassword))}"" = '{newMbrAccount.HashedPassword}',
""{mbrCtx.GetTableColumnName(obj, nameof(mbrUser.VerificationKeySent))}"" = '{newMbrAccount.VerificationKeySent}'
WHERE
""{mbrCtx.GetTableColumnName(obj, nameof(mbrUser.ID))}"" = '{mbrUser.ID}';";
//get rid of the new account
mbrCtx.Users.Remove(await mbrCtx.Users.FirstAsync(u => u.ID == newMbrAccount.ID));
//and save da mess
await mbrCtx.SaveChangesAsync();
await mbrCtx.Database.ExecuteSqlCommandAsync(updateSql);
//send out the email
if (emailTpl != null && ea != null)
{
MapHive.Server.Core.Email.EmailSender.Send(
ea,
emailTpl.Prepare(new Dictionary <string, object>
{
{ nameof(e.VerificationKey), e.VerificationKey },
{ nameof(e.InitialPassword), e.InitialPassword }
}),
mbrUser.Email
);
}
}