public NotifyManager(IDatabase database, INotifyMessageSender emailNotifyMessageSender = null, INotifyMessageSender phoneTextNotifyMessageSender = null, string notifyMessageTableName = "notify_message", string notifyVerifyTableName = "notify_verify", int verifyCodeExpiresSeconds = 3600, string verifyEmailFile = null, string verifyPhoneTextFile = null, string verifyCodeFormat = "###-###")
{
this.database = database;
this.emailNotifyMessageEngine = emailNotifyMessageSender == null ? null : new NotifyMessageEngine(NotifyMessageType.Email, emailNotifyMessageSender, database, notifyMessageTableName);
this.phoneTextNotifyMessageEngine = phoneTextNotifyMessageSender == null ? null : new NotifyMessageEngine(NotifyMessageType.PhoneText, phoneTextNotifyMessageSender, database, notifyMessageTableName);
this.notifyMessageTableName = notifyMessageTableName;
this.notifyVerifyTableName = notifyVerifyTableName;
this.verifyCodeExpiresSeconds = verifyCodeExpiresSeconds;
this.verifyEmailNotifyMessage = verifyEmailFile != null?NotifyMessage.ParseFile(verifyEmailFile) : null;
this.verifyPhoneTextNotifyMessage = verifyPhoneTextFile != null?NotifyMessage.ParseFile(verifyPhoneTextFile) : null;
this.verifyCodeFormat = verifyCodeFormat;
}
public async Task SendVerifyCodeAsync(string contact)
{
logger.Debug($"SendVerifyCodeAsync():contact={contact}");
// Scrub contact
string scrubbedContact = Validate(contact);
logger.Debug($"SendVerifyCodeAsync():scrubbedContact={scrubbedContact}");
// Generate code and expires at
int digits = this.verifyCodeFormat.Count(x => x == '#');
int min = (int)Math.Pow(10, digits - 1);
int max = (int)Math.Pow(10, digits) - 1;
int code = RANDOM.Next(0, max - min) + min;
logger.Debug($"SendVerifyCodeAsync():digits={digits},min={min},max={max},code={code}");
DateTime expiresAt = DateTime.Now.AddSeconds(this.verifyCodeExpiresSeconds);
// Insert/update database
string id = await this.database.SelectValueAsync <string>($"SELECT id FROM {this.notifyVerifyTableName}", new {
contact = scrubbedContact
});
using (ITransaction transaction = await this.database.BeginTransactionAsync()) {
if (id == null)
{
await transaction.InsertAsync <string>(this.notifyVerifyTableName, new {
contact = scrubbedContact,
verify_code = code,
expires_at = expiresAt,
});
}
else
{
await transaction.UpdateAsync(this.notifyVerifyTableName, new {
id,
verify_code = code,
expires_at = expiresAt,
});
}
// Send notify message
var notifyMessageType = DetectNotifyMessageType(scrubbedContact);
NotifyMessage notifyMessage = null;
switch (notifyMessageType)
{
case NotifyMessageType.Email:
if (this.verifyEmailNotifyMessage == null)
{
throw new Exception("Server must be configured with verify email notify message");
}
notifyMessage = this.verifyEmailNotifyMessage;
break;
case NotifyMessageType.PhoneText:
if (this.verifyPhoneTextNotifyMessage == null)
{
throw new Exception("Server must be configured with verify phone text notify message");
}
notifyMessage = this.verifyPhoneTextNotifyMessage;
break;
}
var evaluatedNotifyMessage = notifyMessage.Evaluate(new {
contact = scrubbedContact,
code = code.ToString(this.verifyCodeFormat)
});
await this.Queue(transaction, evaluatedNotifyMessage);
await transaction.CommitAsync();
}
}