1 files changed, 27 insertions, 0 deletions
diff --git a/lib/slack/api.rb b/lib/slack/api.rb
new file mode 100644
index 00000000000..0775e783337
--- /dev/null
+++ b/lib/slack/api.rb
@@ -0,0 +1,27 @@
+# frozen_string_literal: true
+
+# Client for interacting with the Slack API.
+# See https://api.slack.com/web.
+module Slack
+  class API
+    BASE_URL = 'https://slack.com/api'
+    BASE_HEADERS = { 'Content-Type' => 'application/json; charset=utf-8' }.freeze
+
+    def initialize(slack_installation)
+      @token = slack_installation.bot_access_token
+
+      raise ArgumentError, "No token for slack installation #{slack_installation.id}" unless @token
+    end
+
+    def post(api_method, payload)
+      url = "#{BASE_URL}/#{api_method}"
+      headers = BASE_HEADERS.merge('Authorization' => "Bearer #{token}")
+
+      Gitlab::HTTP.post(url, body: payload.to_json, headers: headers)
+    end
+
+    private
+
+    attr_reader :token
+  end
+end