dawarich/app/helpers/users/digests_helper.rb

# frozen_string_literal: true

module Users
  module DigestsHelper
    EARTH_CIRCUMFERENCE_KM = 40_075
    MOON_DISTANCE_KM = 384_400

    def distance_with_unit(distance_meters, unit)
      value = Users::Digest.convert_distance(distance_meters, unit).round
      "#{number_with_delimiter(value)} #{unit}"
    end

    def distance_comparison_text(distance_meters)
      distance_km = distance_meters.to_f / 1000

      if distance_km >= MOON_DISTANCE_KM
        percentage = ((distance_km / MOON_DISTANCE_KM) * 100).round(1)
        "That's #{percentage}% of the distance to the Moon!"
      else
        percentage = ((distance_km / EARTH_CIRCUMFERENCE_KM) * 100).round(1)
        "That's #{percentage}% of Earth's circumference!"
      end
    end

    def format_time_spent(minutes)
      return "#{minutes} minutes" if minutes < 60

      hours = minutes / 60
      remaining_minutes = minutes % 60

      if hours < 24
        "#{hours}h #{remaining_minutes}m"
      else
        days = hours / 24
        remaining_hours = hours % 24
        "#{days}d #{remaining_hours}h"
      end
    end

    def yoy_change_class(change)
      return '' if change.nil?

      change.negative? ? 'negative' : 'positive'
    end

    def yoy_change_text(change)
      return '' if change.nil?

      prefix = change.positive? ? '+' : ''
      "#{prefix}#{change}%"
    end
  end
end