Mastodon-compatible webhooks

Signed-off-by: nicole mikołajczyk <git@mkljczk.pl>

lib/pleroma/webhook/notify.ex

@@ -0,0 +1,83 @@
+# Pleroma: A lightweight social networking server
+# Copyright © 2017-2022 Pleroma Authors <https://pleroma.social/>
+# SPDX-License-Identifier: AGPL-3.0-only
+
+defmodule Pleroma.Webhook.Notify do
+  alias Phoenix.View
+  alias Pleroma.Activity
+  alias Pleroma.User
+  alias Pleroma.Web.AdminAPI.Report
+  alias Pleroma.Webhook
+  alias Pleroma.Workers.WebhookWorker
+
+  def trigger_webhooks(%Activity{} = activity, :"report.created" = type) do
+    webhooks = Webhook.get_by_type(type)
+
+    webhooks
+    |> Enum.map(fn webhook ->
+      WebhookWorker.new(%{
+        "op" => "notify",
+        "type" => type,
+        "webhook_id" => webhook.id,
+        "activity_id" => activity.id
+      })
+    end)
+    |> Oban.insert_all()
+  end
+
+  def trigger_webhooks(%User{} = user, :"account.created" = type) do
+    webhooks = Webhook.get_by_type(type)
+
+    webhooks
+    |> Enum.map(fn webhook ->
+      WebhookWorker.new(%{
+        "op" => "notify",
+        "type" => type,
+        "webhook_id" => webhook.id,
+        "user_id" => user.id
+      })
+    end)
+    |> Oban.insert_all()
+  end
+
+  def report_created(%Webhook{} = webhook, %Activity{} = report) do
+    object =
+      View.render(
+        Pleroma.Web.MastodonAPI.Admin.ReportView,
+        "show.json",
+        Report.extract_report_info(report)
+      )
+
+    deliver(webhook, object, :"report.created")
+  end
+
+  def account_created(%Webhook{} = webhook, %User{} = user) do
+    object =
+      View.render(
+        Pleroma.Web.MastodonAPI.Admin.AccountView,
+        "show.json",
+        user: user
+      )
+
+    deliver(webhook, object, :"account.created")
+  end
+
+  defp deliver(%Webhook{url: url, secret: secret}, object, type) do
+    body =
+      View.render_to_string(Pleroma.Web.AdminAPI.WebhookView, "event.json",
+        type: type,
+        object: object
+      )
+
+    headers = [
+      {"Content-Type", "application/json"},
+      {"X-Hub-Signature", "sha256=#{signature(body, secret)}"}
+    ]
+
+    Pleroma.HTTP.post(url, body, headers)
+  end
+
+  defp signature(body, secret) do
+    :crypto.mac(:hmac, :sha256, secret, body) |> Base.encode16()
+  end
+end