private string GetNotificationAlbumText(NotifySubscribersInput input, string unsubscribeArtistUrl, string unsubscribeAllUrl)
{
string text = $"Good news, {input.Artist.Name} just released a new album: {input.Album.Name}.\r\n\r\n"
+ $"Click the following link to listen: {Album.GetSpotifyUrl(input.Album.SpotifyId)}\r\n\r\n\r\n\r\n"
+ $"To unsubscribe from new albums for this artist, click the following link: {unsubscribeArtistUrl}\r\n"
+ $"To unsubscribe from all new albums from us, click the following link: {unsubscribeAllUrl}\r\n"
+ _templateManager.GetEmailTextFooter();
return(text);
}
private async Task <string> GetNotificationAlbumHtml(NotifySubscribersInput input, string unsubscribeArtistUrl, string unsubscribeAllUrl)
{
string albumImageWidth = "280";
var getTemplateInput = new GetTemplateInput
{
TemplateType = TemplateTypes.Alert,
SimpleVariableValues = new Dictionary <string, string>
{
{ TemplateVariables.Heading, $"New album from {input.Artist.Name}" }
},
BodyParagraphs = new List <BodyParagraph>
{
new BodyParagraph {
HtmlText = $"Good news, {input.Artist.Name} just released a new album: {HttpUtility.HtmlEncode(input.Album.Name)}."
},
new BodyParagraph {
HtmlText = $"<img alt=\"{HttpUtility.HtmlEncode(input.Album.Name)}\" src=\"{input.Album.Image.Url}\" width=\"{albumImageWidth}\" height=\"{albumImageWidth}\" />"
},
new BodyParagraph {
HtmlText = "Click Here to Listen", ButtonUrl = $"{Album.GetSpotifyUrl(input.Album.SpotifyId)}"
}
},
FooterLines = new List <FooterLine>
{
new FooterLine {
HtmlText = _templateManager.GetEmailLink(unsubscribeArtistUrl, "Unsubscribe", null, "12px") + " from new albums for this artist."
},
new FooterLine {
HtmlText = _templateManager.GetEmailLink(unsubscribeAllUrl, "Unsubscribe", null, "12px") + " from all new albums from us."
}
}
};
var template = await _templateManager.GetHtmlEmailTemplate(getTemplateInput);
return(template.ToString());
}
public async Task <NotifySubscribersOutput> NotifySubscribers(NotifySubscribersInput input)
{
if (input.Album == null)
{
throw new ArgumentException("Album must not be null", "Album");
}
if (input.Artist == null)
{
throw new ArgumentException("Artist must not be null", "Artist");
}
try
{
foreach (var subscription in input.Subscriptions)
{
var subscriberDto = await _crudServices.ReadSingleAsync <SubscriberDto>(s => s.Id == subscription.SubscriberId);
if (subscriberDto == null)
{
Logger.LogError("Subscriber with Id {0} not found in database", subscription.SubscriberId);
continue;
}
if (!subscriberDto.EmailAddressVerified)
{
Logger.LogInformation("Skipping notification email for Subscriber with Id {0}, email address not verified", subscription.SubscriberId);
continue;
}
Logger.LogInformation("Sending notification to {0} for SpotifyAlbumId: {1}", subscriberDto.EmailAddress, input.Album.SpotifyId);
string unsubscribeFromArtistUrl = GetUnsubscribeUrl(subscriberDto.UnsubscribeToken, subscription.ArtistId);
string unsubscribeFromAllUrl = GetUnsubscribeUrl(subscriberDto.UnsubscribeToken, null);
string emailText = GetNotificationAlbumText(input, unsubscribeFromArtistUrl, unsubscribeFromAllUrl);
string emailHtml = await GetNotificationAlbumHtml(input, unsubscribeFromArtistUrl, unsubscribeFromAllUrl);
var email = new EmailMessage
{
BodyHtml = emailHtml,
BodyText = emailText,
Subject = $"New album from {input.Artist.Name}",
ToAddresses = new List <EmailAddress>
{
new EmailAddress
{
Address = subscriberDto.EmailAddress
}
}
};
await _emailManager.SendEmail(email);
}
return(new NotifySubscribersOutput());
}
catch (Exception ex)
{
Logger.LogError(ex, "SpotifyAlbumId: " + input.Album.SpotifyId);
return(new NotifySubscribersOutput
{
ErrorMessage = ex.Message
});
}
}