defmodule Nola.Plugins.Link.Quirks do
  @rewrite_hosts "./lib/plugins/link/data/quirks_rewrite_host.txt"
                 |> Util.read_file_list!()
                 |> Enum.map(fn line ->
                   [old, new] = String.split(line, ":")
                   {old, new}
                 end)
                 |> Enum.map(fn {old, new} -> [{old, new}, {"www.#{old}", new}] end)
                 |> List.flatten()
                 |> then(fn list ->
                   IO.puts("Link Quirks: rewrite_hosts: #{inspect(list)}")
                   list
                 end)

  for {old, new} <- @rewrite_hosts do
    def uri(%URI{host: unquote(old)} = uri) do
      %URI{uri | host: unquote(new)}
    end
  end

  def uri(url) do
    url
  end

  @telegram_bot_hosts "./lib/plugins/link/data/quirks_telegram_bot_user_agent.txt"
                      |> Util.read_file_list!()
                      |> Enum.map(fn h -> [h, "www.#{h}"] end)
                      |> List.flatten()
                      |> then(fn list ->
                        IO.puts("Link Quirks: telegram_bot_hosts: #{inspect(list)}")
                        list
                      end)

  def user_agent(host) when host in @telegram_bot_hosts do
    "TelegramBot (like TwitterBot)"
  end

  def user_agent(_host) do
    "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/137.0.0.0 Safari/537.36"
  end

  def list() do
    [rewrite_hosts: @rewrite_hosts, telegram_bot_hosts: @telegram_bot_hosts]
  end
end