brew/Library/Homebrew/cmd/home.rb

# typed: true
# frozen_string_literal: true

require "abstract_command"
require "formula"

module Homebrew
  module Cmd
    class Home < AbstractCommand
      cmd_args do
        description <<~EOS
          Open a <formula> or <cask>'s homepage in a browser, or open
          Homebrew's own homepage if no argument is provided.
        EOS
        switch "--formula", "--formulae",
               description: "Treat all named arguments as formulae."
        switch "--cask", "--casks",
               description: "Treat all named arguments as casks."

        conflicts "--formula", "--cask"

        named_args [:formula, :cask]
      end

      sig { override.void }
      def run
        if args.no_named?
          exec_browser HOMEBREW_WWW
          return
        end

        # to_formulae_and_casks is typed to possibly return Kegs (but won't without explicitly asking)
        formulae_or_casks = T.cast(args.named.to_formulae_and_casks, T::Array[T.any(Formula, Cask::Cask)])
        homepages = formulae_or_casks.map do |formula_or_cask|
          puts "Opening homepage for #{name_of(formula_or_cask)}"
          formula_or_cask.homepage
        end

        exec_browser(*T.unsafe(homepages))
      end

      def name_of(formula_or_cask)
        if formula_or_cask.is_a? Formula
          "Formula #{formula_or_cask.name}"
        else
          "Cask #{formula_or_cask.token}"
        end
      end
    end
  end
end