brew/Library/Homebrew/cask/cmd/info.rb

# typed: false
# frozen_string_literal: true

require "json"

module Cask
  class Cmd
    # Implementation of the `brew cask info` command.
    #
    # @api private
    class Info < AbstractCommand
      def self.min_named
        :cask
      end

      def self.description
        "Displays information about the given <cask>."
      end

      def self.parser
        super do
          flag   "--json=",
                 description: "Output information in JSON format."
          switch "--github",
                 description: "Open the GitHub source page for <Cask> in a browser. "
        end
      end

      def github_info(cask)
        sourcefile_path = cask.sourcefile_path
        dir = cask.tap.path
        path = sourcefile_path.relative_path_from(dir)
        remote = cask.tap.remote
        github_remote_path(remote, path)
      end

      def github_remote_path(remote, path)
        if remote =~ %r{^(?:https?://|git(?:@|://))github\.com[:/](.+)/(.+?)(?:\.git)?$}
          "https://github.com/#{Regexp.last_match(1)}/#{Regexp.last_match(2)}/blob/HEAD/#{path}"
        else
          "#{remote}/#{path}"
        end
      end

      def run
        if args.json == "v1"
          puts JSON.generate(args.named.to_casks.map(&:to_h))
        elsif args.github?
          raise CaskUnspecifiedError if args.no_named?

          args.named.to_casks.map do |cask|
            exec_browser(github_info(cask))
          end
        else
          args.named.to_casks.each_with_index do |cask, i|
            puts unless i.zero?
            odebug "Getting info for Cask #{cask}"
            self.class.info(cask)
          end
        end
      end

      def self.get_info(cask)
        require "cask/installer"

        output = +"#{title_info(cask)}\n"
        output << "#{Formatter.url(cask.homepage)}\n" if cask.homepage
        output << installation_info(cask)
        repo = repo_info(cask)
        output << "#{repo}\n" if repo
        output << name_info(cask)
        output << desc_info(cask)
        language = language_info(cask)
        output << language if language
        output << "#{artifact_info(cask)}\n"
        caveats = Installer.caveats(cask)
        output << caveats if caveats
        output
      end

      def self.info(cask)
        puts get_info(cask)
        ::Utils::Analytics.cask_output(cask, args: Homebrew::CLI::Args.new)
      end

      def self.title_info(cask)
        title = "#{cask.token}: #{cask.version}"
        title += " (auto_updates)" if cask.auto_updates
        title
      end

      def self.formatted_url(url)
        "#{Tty.underline}#{url}#{Tty.reset}"
      end

      def self.installation_info(cask)
        return "Not installed\n" unless cask.installed?

        install_info = +""
        cask.versions.each do |version|
          versioned_staged_path = cask.caskroom_path.join(version)
          path_details = if versioned_staged_path.exist?
            versioned_staged_path.abv
          else
            Formatter.error("does not exist")
          end
          install_info << "#{versioned_staged_path} (#{path_details})\n"
        end
        install_info.freeze
      end

      def self.name_info(cask)
        <<~EOS
          #{ohai_title((cask.name.size > 1) ? "Names" : "Name")}
          #{cask.name.empty? ? Formatter.error("None") : cask.name.join("\n")}
        EOS
      end

      def self.desc_info(cask)
        <<~EOS
          #{ohai_title("Description")}
          #{cask.desc.nil? ? Formatter.error("None") : cask.desc}
        EOS
      end

      def self.language_info(cask)
        return if cask.languages.empty?

        <<~EOS
          #{ohai_title("Languages")}
          #{cask.languages.join(", ")}
        EOS
      end

      def self.repo_info(cask)
        return if cask.tap.nil?

        url = if cask.tap.custom_remote? && !cask.tap.remote.nil?
          cask.tap.remote
        else
          "#{cask.tap.default_remote}/blob/HEAD/Casks/#{cask.token}.rb"
        end

        "From: #{Formatter.url(url)}"
      end

      def self.artifact_info(cask)
        artifact_output = ohai_title("Artifacts").dup
        cask.artifacts.each do |artifact|
          next unless artifact.respond_to?(:install_phase)
          next unless DSL::ORDINARY_ARTIFACT_CLASSES.include?(artifact.class)

          artifact_output << "\n" << artifact.to_s
        end
        artifact_output.freeze
      end
    end
  end
end