[PM-23717] premium renewal email (#6672)

* [PM-23717] premium renewal email

* pr feedback

* pr feedback

Author: kdenney

src/Billing/Services/Implementations/UpcomingInvoiceHandler.cs

@@ -11,6 +11,7 @@
 using Bit.Core.Entities;
 using Bit.Core.Models.Mail.Billing.Renewal.Families2019Renewal;
 using Bit.Core.Models.Mail.Billing.Renewal.Families2020Renewal;
+using Bit.Core.Models.Mail.Billing.Renewal.Premium;
 using Bit.Core.OrganizationFeatures.OrganizationSponsorships.FamiliesForEnterprise.Interfaces;
 using Bit.Core.Platform.Mail.Mailer;
 using Bit.Core.Repositories;
@@ -606,14 +607,27 @@ private async Task SendPremiumRenewalEmailAsync(
         User user,
         PremiumPlan premiumPlan)
     {
-        /* TODO: Replace with proper premium renewal email template once finalized.
-           Using Families2020RenewalMail as a temporary stop-gap. */
-        var email = new Families2020RenewalMail
+        var coupon = await stripeFacade.GetCoupon(CouponIDs.Milestone2SubscriptionDiscount);
+        if (coupon == null)
+        {
+            throw new InvalidOperationException($"Coupon for sending premium renewal email id:{CouponIDs.Milestone2SubscriptionDiscount} not found");
+        }
+
+        if (coupon.PercentOff == null)
+        {
+            throw new InvalidOperationException($"coupon.PercentOff for sending premium renewal email id:{CouponIDs.Milestone2SubscriptionDiscount} is null");
+        }
+
+        var discountedAnnualRenewalPrice = premiumPlan.Seat.Price * (100 - coupon.PercentOff.Value) / 100;
+
+        var email = new PremiumRenewalMail
         {
             ToEmails = [user.Email],
-            View = new Families2020RenewalMailView
+            View = new PremiumRenewalMailView
             {
-                MonthlyRenewalPrice = (premiumPlan.Seat.Price / 12).ToString("C", new CultureInfo("en-US"))
+                BaseMonthlyRenewalPrice = (premiumPlan.Seat.Price / 12).ToString("C", new CultureInfo("en-US")),
+                DiscountAmount = $"{coupon.PercentOff}%",
+                DiscountedMonthlyRenewalPrice = (discountedAnnualRenewalPrice / 12).ToString("C", new CultureInfo("en-US"))
             }
         };
 

src/Core/MailTemplates/Mjml/emails/Billing/Renewals/premium-renewal.mjml

@@ -0,0 +1,41 @@
+<mjml>
+    <mj-head>
+        <mj-include path="../../../components/head.mjml"/>
+    </mj-head>
+
+    <!-- Blue Header Section-->
+    <mj-body css-class="border-fix">
+        <mj-wrapper css-class="border-fix" padding="20px 20px 0px 20px">
+            <mj-bw-simple-hero />
+        </mj-wrapper>
+
+        <!-- Main Content Section -->
+        <mj-wrapper padding="0px 20px 0px 20px">
+            <mj-section background-color="#fff" padding="15px 10px 10px 10px">
+                <mj-column>
+                    <mj-text font-size="16px" line-height="24px" padding="10px 15px 15px 15px">
+                        Your Bitwarden Premium subscription renews in 15 days. The price is updating to {{BaseMonthlyRenewalPrice}}/month, billed annually.
+                    </mj-text>
+                    <mj-text font-size="16px" line-height="24px" padding="10px 15px 15px 15px">
+                        As an existing Bitwarden customer, you will receive a one-time {{DiscountAmount}} loyalty discount for this renewal.
+                        This renewal now will be {{DiscountedMonthlyRenewalPrice}}/month, billed annually.
+                    </mj-text>
+                    <mj-text font-size="16px" line-height="24px" padding="10px 15px">
+                        Questions? Contact
+                        <a href="mailto:support@bitwarden.com" class="link">support@bitwarden.com</a>
+                    </mj-text>
+                </mj-column>
+            </mj-section>
+            <mj-section background-color="#fff" padding="0 20px 20px 20px">
+            </mj-section>
+        </mj-wrapper>
+
+        <!-- Learn More Section -->
+        <mj-wrapper padding="0px 20px 10px 20px">
+            <mj-bw-learn-more-footer/>
+        </mj-wrapper>
+
+        <!-- Footer -->
+        <mj-include path="../../../components/footer.mjml"/>
+    </mj-body>
+</mjml>

src/Core/Models/Mail/Billing/Renewal/Premium/PremiumRenewalMailView.cs

@@ -0,0 +1,15 @@
+using Bit.Core.Platform.Mail.Mailer;
+
+namespace Bit.Core.Models.Mail.Billing.Renewal.Premium;
+
+public class PremiumRenewalMailView : BaseMailView
+{
+    public required string BaseMonthlyRenewalPrice { get; set; }
+    public required string DiscountedMonthlyRenewalPrice { get; set; }
+    public required string DiscountAmount { get; set; }
+}
+
+public class PremiumRenewalMail : BaseMail<PremiumRenewalMailView>
+{
+    public override string Subject { get => "Your Bitwarden Premium renewal is updating"; }
+}