vaccins/lib/vaccins/location_store.ex

defmodule Vaccins.LocationStore do
  defmodule Location do
    alias __MODULE__, as: Location

    defstruct [
      :id,
      :name,
      :availability_query,
      :booking_page,
      :provider,
      availability_query_params: []
    ]

    def set_id(l = %Location{name: name}), do: %{l | id: name |> String.to_atom()}

    def build_query(l = %Location{availability_query_params: params, provider: provider})
        when params != [],
        do: %{l | availability_query: params |> provider.new}

    def query_availability(
          l = %Location{id: id, availability_query: q, booking_page: bp, provider: provider}
        ) do
      with url <- q |> provider.to_url() |> URI.to_string(),
           {:ok, result} <- url |> Vaccins.Scraper.get_json() do
        case result |> provider.analyze_result() do
          {:ok, slots} -> {id, slots, bp}
          {:error, reason} when reason in [:no_availability] -> {id, reason}
        end
      end
    end
  end

  alias Vaccins.Queries.Doctolib

  def get_locations(),
    do:
      [
        %Location{
          name: "Centre de Vaccination - Salle Olympe de Gouges",
          provider: Doctolib,
          availability_query_params: [
            visit_motive_ids: 2_549_915,
            agenda_ids:
              "434477-434486-434466-434472-440075-440077-440078-415625-434490-462178-462452-433984-462177-433604-433601-415628-440074-433997-434489-440076",
            practice_ids: 164_922,
            limit: 7
          ],
          booking_page:
            "https://partners.doctolib.fr/centre-de-sante/fontenay-sous-bois/centre-de-vaccination-covid-19-fontenay-sous-bois?pid=practice-180541"
        },
        %Location{
          name: "Centre de Vaccination - Paris 20e",
          provider: Doctolib,
          availability_query_params: [
            visit_motive_ids: 2_549_915,
            agenda_ids:
              "463167-415613-463168-415615-429620-434343-463166-463170-463171-447048-440655-434052-440654-462614-462613-433994-434337-434338",
            practice_ids: 166_459,
            limit: 3
          ],
          booking_page:
            "https://www.doctolib.fr/centre-de-sante/paris/centre-de-vaccination-covid-19-ville-de-paris?pid=practice-166459"
        },
        %Location{
          name: "Hotel de ville de Fontenay-sous-Bois",
          provider: Doctolib,
          availability_query_params: [
            visit_motive_ids: 2_743_304,
            agenda_ids: "449169-449170-466472",
            practice_ids: 180_541,
            limit: 15
          ],
          booking_page:
            "https://partners.doctolib.fr/centre-de-sante/fontenay-sous-bois/centre-de-vaccination-covid-19-fontenay-sous-bois?pid=practice-180541&enable_cookies_consent=1"
        }
      ]
      |> Enum.map(&(&1 |> Location.set_id() |> Location.build_query()))
end