Add web push support

lib/mix/tasks/generate_config.ex

@@ -14,6 +14,8 @@ defmodule Mix.Tasks.GenerateConfig do
 
     resultSql = EEx.eval_file("lib/mix/tasks/sample_psql.eex", dbpass: dbpass)
 
+    {web_push_public_key, web_push_private_key} = :crypto.generate_key(:ecdh, :prime256v1)
+
     result =
       EEx.eval_file(
         "lib/mix/tasks/sample_config.eex",
@@ -21,7 +23,9 @@ defmodule Mix.Tasks.GenerateConfig do
         email: email,
         name: name,
         secret: secret,
-        dbpass: dbpass
+        dbpass: dbpass,
+        web_push_public_key: Base.url_encode64(web_push_public_key, padding: false),
+        web_push_private_key: Base.url_encode64(web_push_private_key, padding: false)
       )
 
     IO.puts(

lib/mix/tasks/sample_config.eex

@@ -25,6 +25,12 @@ config :pleroma, Pleroma.Repo,
   hostname: "localhost",
   pool_size: 10
 
+# Configure web push notifications
+config :web_push_encryption, :vapid_details,
+  subject: "mailto:<%= email %>",
+  public_key: "<%= web_push_public_key %>",
+  private_key: "<%= web_push_private_key %>"
+
 # Configure S3 support if desired.
 # The public S3 endpoint is different depending on region and provider,
 # consult your S3 provider's documentation for details on what to use.