# Shows admins the leaderboard exactly as the API publishes it.
#
# The endpoint serves a cached payload, so this reads that same cache entry
# rather than recomputing -- otherwise the screen would show numbers nobody is
# actually being served. When the cache has expired the screen falls back to a
# preview of what the next API call will publish, and says so.
class Admin::LeaderboardController < Admin::AdminController

  # GET /admin/:locale/leaderboard
  def index
    @published = LeaderboardPayload.published
    @live      = @published.nil?
    @payload   = @published || LeaderboardPayload.build

    @leaderboard = @payload[:leaderboard]
    @badges      = @payload[:badges]
    @updated_at  = @payload[:updated_at]
  end


  # DELETE /admin/:locale/leaderboard/cache
  #
  # Drops the published payload so the next API call recomputes. Handy when
  # headcounts or weights change and you don't want to wait out the TTL.
  def expire
    LeaderboardPayload.expire!

    redirect_to admin_leaderboard_path, notice: t(:leaderboard_expired, scope: 'utils')
  end
end