defmodule DisplayPurposes do
  @moduledoc """
  Display Purposes API wrapper

  API wrapper functions:
  - `tags/3` function
  - `graph/3` function
  """

  @query "https://query.displaypurposes.com/"
  @tags "tag/"
  @graph "graph/"

  use HTTPoison.Base

  @doc """
  Get relevant hashtags for `word`
  """
  def tags(word, headers \\ [], options \\ []) when is_binary(word) and is_list(headers) and is_list(options) do
    get(@tags <> word, headers, options)
  end

  @doc """
  Get neighborhood graph of hashtag
  """
  def graph(word, headers \\ [], options \\ []) when is_binary(word) and is_list(headers) and is_list(options) do
    get(@graph <> word, headers, options)
  end

  @doc false
  def process_request_url(url) do
    @query <> url
  end

  @doc false
  def process_response_body(body) do
    body |> Jason.decode!()
  end
end