defmodule MyApp.Endpoint do
  plug GitHubWebhook,
    secret: "secret",
    path: "/github_webhook",
    action: {MyApp.GithubWebhook, :handle}
  # Rest of the plugs
end

defmodule MyApp.GithubWebhook do
  @spec handle(Plug.Conn.t(), map(), Keyword.t()) :: any()
  def handle(conn, payload, opts) do
    # Handle webhook payload here
    # opts contains additional values from headers
    # Return value of this function is ignored
  end
end

config :github_webhook,
  # Secret set in webhook settings page of the Github repository
  secret: "foobar",
  # Path that will be intercepted by GhWebhookPlug
  path: "/api/github_webhook",
  # Module and function that will be used to handle the webhook payload
  action: {MyApp.GithubWebhook, :handle}

config :github_webhook,
  # JSON library used for decoding the incoming request
  json_library: Jason

def deps do
  [
    {:github_webhook, "~> 0.2"}
  ]
end