[MM-30984] Missing payment email on billing day if no CC is present (#16442)

* Adding email and scaffolding for payment failure in case where customer has not added payment method

* Adding email template

* Remove unused boolean

* Fix error

* Add Email Us verbiage

Co-authored-by: Mattermod <mattermod@users.noreply.github.com>

app/app_iface.go

@@ -265,6 +265,8 @@ type AppIface interface {
 	SearchAllChannels(term string, opts model.ChannelSearchOpts) (*model.ChannelListWithTeamData, int64, *model.AppError)
 	// SearchAllTeams returns a team list and the total count of the results
 	SearchAllTeams(searchOpts *model.TeamSearch) ([]*model.Team, int64, *model.AppError)
+	// SendNoCardPaymentFailedEmail
+	SendNoCardPaymentFailedEmail() *model.AppError
 	// ServePluginPublicRequest serves public plugin files
 	// at the URL http(s)://$SITE_URL/plugins/$PLUGIN_ID/public/{anything}
 	ServePluginPublicRequest(w http.ResponseWriter, r *http.Request)

app/cloud.go

@@ -75,3 +75,19 @@ func (a *App) SendPaymentFailedEmail(failedPayment *model.FailedPayment) *model.
 	}
 	return nil
 }
+
+// SendNoCardPaymentFailedEmail
+func (a *App) SendNoCardPaymentFailedEmail() *model.AppError {
+	sysAdmins, err := a.getSysAdminsEmailRecipients()
+	if err != nil {
+		return err
+	}
+
+	for _, admin := range sysAdmins {
+		err := a.Srv().EmailService.SendNoCardPaymentFailedEmail(admin.Email, admin.Locale, *a.Config().ServiceSettings.SiteURL)
+		if err != nil {
+			a.Log().Error("Error sending payment failed email", mlog.Err(err))
+		}
+	}
+	return nil
+}

app/email.go

@@ -779,6 +779,7 @@ func (es *EmailService) SendPaymentFailedEmail(email string, locale string, fail
 	bodyPage.Props["Info2"] = T("api.templates.payment_failed.info2")
 	bodyPage.Props["Info3"] = T("api.templates.payment_failed.info3")
 	bodyPage.Props["Button"] = T("api.templates.over_limit_fix_now")
+	bodyPage.Props["EmailUs"] = T("api.templates.email_us_anytime_at")
 
 	bodyPage.Props["FailedReason"] = failedPayment.FailureMessage
 
@@ -788,3 +789,23 @@ func (es *EmailService) SendPaymentFailedEmail(email string, locale string, fail
 
 	return true, nil
 }
+
+func (es *EmailService) SendNoCardPaymentFailedEmail(email string, locale string, siteURL string) *model.AppError {
+	T := utils.GetUserTranslations(locale)
+
+	subject := T("api.templates.payment_failed_no_card.subject")
+
+	bodyPage := es.newEmailTemplate("payment_failed_no_card_body", locale)
+	bodyPage.Props["SiteURL"] = siteURL
+	bodyPage.Props["Title"] = T("api.templates.payment_failed_no_card.title")
+	bodyPage.Props["Info1"] = T("api.templates.payment_failed_no_card.info1")
+	bodyPage.Props["Info3"] = T("api.templates.payment_failed_no_card.info3")
+	bodyPage.Props["Button"] = T("api.templates.payment_failed_no_card.button")
+	bodyPage.Props["EmailUs"] = T("api.templates.email_us_anytime_at")
+
+	if err := es.sendMail(email, subject, bodyPage.Render()); err != nil {
+		return model.NewAppError("SendPaymentFailedEmail", "api.user.send_password_reset.send.app_error", nil, "err="+err.Message, http.StatusInternalServerError)
+	}
+
+	return nil
+}

app/opentracing/opentracing_layer.go

@@ -13110,6 +13110,28 @@ func (a *OpenTracingAppLayer) SendEphemeralPost(userId string, post *model.Post)
 	return resultVar0
 }
 
+func (a *OpenTracingAppLayer) SendNoCardPaymentFailedEmail() *model.AppError {
+	origCtx := a.ctx
+	span, newCtx := tracing.StartSpanWithParentByContext(a.ctx, "app.SendNoCardPaymentFailedEmail")
+
+	a.ctx = newCtx
+	a.app.Srv().Store.SetContext(newCtx)
+	defer func() {
+		a.app.Srv().Store.SetContext(origCtx)
+		a.ctx = origCtx
+	}()
+
+	defer span.Finish()
+	resultVar0 := a.app.SendNoCardPaymentFailedEmail()
+
+	if resultVar0 != nil {
+		span.LogFields(spanlog.Error(resultVar0))
+		ext.Error.Set(span, true)
+	}
+
+	return resultVar0
+}
+
 func (a *OpenTracingAppLayer) SendNotifications(post *model.Post, team *model.Team, channel *model.Channel, sender *model.User, parentPostList *model.PostList, setOnline bool) ([]string, error) {
 	origCtx := a.ctx
 	span, newCtx := tracing.StartSpanWithParentByContext(a.ctx, "app.SendNotifications")