module Public
  module LiveHelper
    def live_score_sets_label(score_state)
      return nil unless score_state

      "Set #{score_state.current_set} · Set vinti #{score_state.home_sets}-#{score_state.away_sets}"
    end

    def live_score_partials_label(score_state)
      return nil unless score_state

      partials = Array(score_state.set_partials)
      return nil if partials.empty?

      partials.map { |p| format_set_partial_entry(p) }.join(" · ")
    end

    def live_scheduled_label(datetime)
      return nil unless datetime

      datetime.in_time_zone.strftime("%d/%m/%Y alle %H:%M")
    end

    def live_scheduled_relative(datetime)
      return nil unless datetime

      if datetime.to_date == Time.zone.today
        "Oggi alle #{datetime.strftime('%H:%M')}"
      elsif datetime.to_date == Time.zone.tomorrow
        "Domani alle #{datetime.strftime('%H:%M')}"
      else
        live_scheduled_label(datetime)
      end
    end

    def live_match_card_heading(match)
      team = match.team
      club_name = team.club&.name.presence || "Società"
      content_tag(:h3, class: "live-card__title") do
        safe_join([
          content_tag(:span, club_name, class: "live-card__club"),
          content_tag(:span, "#{team.name} vs #{match.opponent_name}", class: "live-card__matchup")
        ])
      end
    end

    def live_match_page_heading(match)
      team = match.team
      club_name = team.club&.name.presence || "Società"
      content_tag(:div, class: "live-page-heading") do
        safe_join([
          content_tag(:p, club_name, class: "live-page-heading__club"),
          content_tag(:h1, "#{team.name} vs #{match.opponent_name}", class: "live-page-heading__matchup")
        ])
      end
    end

    def live_score_points_label(match, score_state)
      return "—" unless score_state

      "#{match.team.name} #{score_state.home_points} - #{score_state.away_points} #{match.opponent_name}"
    end

    # Colore ospite sul tabellone: secondario società se leggibile su bianco, altrimenti blu visitatore.
    def live_scorebug_away_color(team)
      club = team.club
      candidate = club&.effective_secondary_color.presence || "#1565c0"
      return candidate unless light_hex_color?(candidate)

      "#1565c0"
    end

    private

    def light_hex_color?(hex)
      h = hex.to_s.delete_prefix("#")
      return false unless h.match?(/\A\h{6}\z/i)

      r = h[0..1].to_i(16)
      g = h[2..3].to_i(16)
      b = h[4..5].to_i(16)
      (0.299 * r + 0.587 * g + 0.114 * b) > 200
    end

    def format_set_partial_entry(partial)
      data = partial.respond_to?(:with_indifferent_access) ? partial.with_indifferent_access : partial
      set_no = data[:set] || data["set"]
      home = data[:home] || data["home"]
      away = data[:away] || data["away"]
      label = set_no.present? ? "Set #{set_no}" : "Set"
      "#{label} #{home}-#{away}"
    end
  end
end