module Streams
  # Garantisce che la slate MP4 esista per il record effettivo della partita (sync al go-live).
  class CoverSlateEnsurer
    def self.ensure_for!(match)
      new(match).ensure!
    end

    def initialize(match)
      @match = match
      @resolver = CoverResolver.new(match)
    end

    def ensure!
      result = @resolver.resolve
      return unless result

      record = result.record
      return if slate_ready?(record)

      GenerateCoverSlate.call(record)
    rescue GenerateCoverSlate::Error => e
      Rails.logger.warn("[CoverSlateEnsurer] match=#{@match.id} #{e.message}")
      nil
    end

    private

    def slate_ready?(record)
      return false unless record.cover_slate.attached?

      path = CoverSlatePaths.local_path_for(record)
      path.present? && File.exist?(path)
    end
  end
end