get_data.ex

import IO

defmodule SimilarfilmsPhoenix.GetData do
  def build_key(key) do
    transforms = %{"id" => "movie_id", "vote_average" => "rating", "poster_path" => "image_url"}
    if (transforms[key]) do
      transforms[key]
    else
      key
    end
  end

  def transform_api_results({key, val}, acc) do
    Map.put(acc, build_key(key), val)
  end

  def get_data(path) do
    database_movies = SimilarfilmsPhoenix.Repo.all(SimilarfilmsPhoenix.Movie)
    |> Enum.map(fn(movie) -> Map.from_struct(movie) end)
    |> Enum.map(fn(movie) -> Enum.reduce(movie, %{}, fn({key, val}, acc) -> Map.put(acc, Atom.to_string(key), val) end) end)

    HTTPotion.start
    api = Application.get_env(:similarfilms_phoenix, SimilarfilmsPhoenix.ApiKey)[:moviedb_api_key]
    host = "api.themoviedb.org"
    api_results = HTTPotion.get("https://#{host}/#{path}", query: %{"api_key": api})
    |> Map.get(:body)
    |> Poison.decode!

    transformed_results = api_results["results"]
    |> Enum.map(fn(movie) -> Enum.reduce(movie, %{}, &transform_api_results/2) end)
    transformed_results || []
    # database_movies
  end
end