add admin mailer

backend/config/releases.exs

@@ -31,4 +31,9 @@ config :ex_twilio,
 
 config :backend, :crawler,
   admin_phone: System.get_env("ADMIN_PHONE"),
-  twilio_phone: System.get_env("TWILIO_PHONE")
+  twilio_phone: System.get_env("TWILIO_PHONE"),
+  admin_email: System.get_env("ADMIN_EMAIL")
+
+config :backend, Backend.Mailer,
+  adapter: Swoosh.Adapters.Sendgrid,
+  api_key: System.get_env("SENDGRID_API_KEY")

backend/lib/backend/scheduler.ex

@@ -204,6 +204,7 @@ defmodule Backend.Scheduler do
 
       Logger.info(message)
       send_admin_sms(message)
+      Backend.Mailer.AdminEmail.send("Potential spam", message)
     else
       Logger.debug("Did not find potential spam instances.")
     end

backend/lib/mailer/admin_email.ex

@@ -0,0 +1,17 @@
+defmodule Backend.Mailer.AdminEmail do
+  import Swoosh.Email
+  import Backend.Util
+
+  def send(subject, body) do
+    admin_email = get_config(:admin_email)
+
+    if admin_email != nil do
+      new()
+      |> to(admin_email)
+      |> from("noreply@fediverse.space")
+      |> subject(subject)
+      |> text_body(body)
+      |> Backend.Mailer.deliver!()
+    end
+  end
+end

backend/lib/mailer/mailer.ex

@@ -0,0 +1,3 @@
+defmodule Backend.Mailer do
+  use Swoosh.Mailer, otp_app: :backend
+end