resume_builder/lib/views/date.ex

defmodule CvGenView.Date do
  use Phoenix.Component

  attr(:start_date, :string, required: true)
  attr(:end_date, :string, default: nil)

  def time_span(assigns) when assigns.start_date == assigns.end_date,
    do: ~H"""
    <div class="period">
      <.date date={@start_date} />
    </div>
    """

  def time_span(assigns),
    do: ~H"""
    <div class="period">
      <.date date={@start_date} /> - <.date date={@end_date} />
    </div>
    """

  attr(:date, :any)
  attr(:rest, :global)

  def date(assigns) do
    ~H"""
    <time datetime={@date} {@rest}><%= localized(@date) %></time>
    """
  end

  defp localized(nil), do: "Aujourd'hui"

  defp localized(date) when is_binary(date) do
    case String.split(date, "-") do
      [year, month] ->
        {year, month} = {String.to_integer(year), String.to_integer(month)}
        Date.new!(year, month, 1) |> localized()

      [year] ->
        year
    end
  end

  defp localized(date) when is_struct(date, Date),
    do:
      Calendar.strftime(
        date,
        "%B %Y",
        month_names: fn month ->
          {"Janvier", "Février", "Mars", "Avril", "Mai", "Juin", "Juillet", "Août", "Septembre",
           "Octobre", "Novembre", "Décembre"}
          |> elem(month - 1)
        end
      )
end