feat: save the date tracking

lib/db/queries/invitations.ts

@@ -16,6 +16,7 @@ export interface InvitationListItem {
   contactPhone: string | null
   maxPartySize: number
   allowMemberEdits: boolean
+  saveTheDateSentAt: Date | null
   membersCount: number
   attendingCount: number
   pendingCount: number
@@ -138,6 +139,58 @@ export async function deleteInvitationGroup(
   })
 }
 
+export async function updateSaveTheDateSent({
+  invitationId,
+  sent,
+  adminEmail,
+}: {
+  invitationId: string
+  sent: boolean
+  adminEmail: string
+}) {
+  return db.transaction().execute(async (trx) => {
+    const invitation = await trx
+      .selectFrom("invitations")
+      .select(["id", "display_name", "save_the_date_sent_at"])
+      .where("id", "=", invitationId)
+      .executeTakeFirst()
+
+    if (!invitation) return null
+
+    const previousSent = invitation.save_the_date_sent_at !== null
+    const saveTheDateSentAt = sent ? new Date() : null
+
+    const updated = await trx
+      .updateTable("invitations")
+      .set({
+        save_the_date_sent_at: saveTheDateSentAt,
+        updated_at: new Date(),
+      })
+      .where("id", "=", invitationId)
+      .returning(["id", "save_the_date_sent_at"])
+      .executeTakeFirst()
+
+    if (!updated) return null
+
+    await trx
+      .insertInto("admin_audit_events")
+      .values({
+        admin_email: adminEmail,
+        action: sent ? "save_the_date.marked_sent" : "save_the_date.marked_unsent",
+        target_type: "invitation",
+        target_id: invitationId,
+        metadata: {
+          displayName: invitation.display_name,
+          previousSent,
+          newSent: sent,
+        },
+      })
+      .execute()
+
+    return updated
+  })
+}
+
 export async function listInvitations(): Promise<InvitationListItem[]> {
   const invitations = await db
     .selectFrom("invitations")
@@ -179,6 +232,7 @@ export async function listInvitations(): Promise<InvitationListItem[]> {
       contactPhone: invitation.contact_phone,
       maxPartySize: invitation.max_party_size,
       allowMemberEdits: invitation.allow_member_edits,
+      saveTheDateSentAt: invitation.save_the_date_sent_at,
       membersCount: invitationMembers.length,
       attendingCount: invitationMembers.filter((member) => member.attending === true).length,
       pendingCount: invitationMembers.filter((member) => member.attending === null).length,