defmodule Pandoc do
@moduledoc """
Documentation for `Pandoc`.
"""
use GenServer
def start_link(args) do
GenServer.start_link(__MODULE__, args)
end
def init([profile | args]) do
IO.puts "pandoc filesystem watcher init args #{inspect(args)}"
# inspect(Application.get_all_env(:pandoc)) |> IO.puts
inspect(Application.get_env(:pandoc, profile)) |> IO.puts
{:ok, watcher_pid} = FileSystem.start_link(args)
FileSystem.subscribe(watcher_pid)
{:ok, %{watcher_pid: watcher_pid}}
end
def handle_info({:file_event, watcher_pid, {path, events}}, %{watcher_pid: watcher_pid} = state) do
case {Path.extname(path), :closed in events} do
{".md", true} ->
System.cmd("pandoc", [
"--mathjax",
path,
"-o",
Path.join("priv/static/posts", Path.basename(path) |> String.replace_suffix(".md", ".html") |> String.slice(11..-1//1))
])
_ -> nil
end
{:noreply, state}
end
def handle_info({:file_event, watcher_pid, :stop}, %{watcher_pid: watcher_pid} = state) do
# Your own logic when monitor stop
{:noreply, state}
end
def run(profile) do
# Application.get_env(:pandoc, a1) |> inspect(pretty: true) |> IO.puts
Application.get_all_env(profile) |> inspect(pretty: true) |> IO.puts
ref =
__MODULE__.Supervisor
|> Supervisor.start_child(
Supervisor.child_spec({Pandoc, [profile, dirs: ["priv/posts"]]}, restart: :transient, id:
__MODULE__.Watcher)
)
|> case do
{:ok, pid} -> pid
{:error, {:already_started, pid}} -> pid
end
|> Process.monitor()
receive do
{:DOWN, ^ref, _, _, _} -> :ok
end
end
end