defmodule Mix.Tasks.Phoenix.ApiDocs do
  use Mix.Task

  @shortdoc "Generates HTML API Docs from api.apib using Aglio"

  def run(_) do
    if System.find_executable("aglio") == nil do
      raise "Install Aglio to convert Blueprint API to HTML: \"npm install aglio -g\""
    end

    docs_path = Application.get_env(:phoenix_api_docs, :docs_path, "docs")
    docs_theme = Application.get_env(:phoenix_api_docs, :docs_theme, "triple")
    project_path = Mix.Project.load_paths |> Enum.at(0) |> String.split("_build") |> Enum.at(0)
    path = Path.join(project_path, docs_path)

    System.cmd("aglio", ["--theme-template", docs_theme, "-i", Path.join(path, "api.apib"), "-o", Path.join(path, "index.html")])
  end

end