# frozen_string_literal: true

require "formula"
require "json"
require "readall"

module Homebrew
  module Cmd
    class BrewerTapContentInfo < AbstractCommand
      cmd_args do
        description <<~EOS
          Display the information about third-party casks and formulas.
        EOS
        flag "--json",
             description: "Print a JSON representation. Currently the default value for <version> is `v1` for " \
                          "<formula>. For <formula> and <cask> use `v2`. See the docs for examples of using the " \
                          "JSON output: <https://docs.brew.sh/Querying-Brew>"
        switch "--formula", "--formulae",
               description: "Treat all named arguments as formulae."
        switch "--cask", "--casks",
               description: "Treat all named arguments as casks."
        conflicts "--formula", "--cask"
      end
      
      def run
        begin
          original_stderr = $stderr.clone
          $stderr.reopen(File.new("/dev/null", "w"))
          
          formulae = []
          casks = []
          
          Tap.each do |tap|
            next if ["homebrew/core", "homebrew/cask"].include?(tap.name)
            next unless valid_tap? tap
            
            unless args.cask?
              tap.formula_files.each do |formula_file|
                formulae << Formulary.factory(formula_file)
              end
            end
            
            unless args.formula?
              tap.cask_files.each do |cask_file|
                casks << Cask::CaskLoader::FromPathLoader.new(cask_file).load(config: nil)
              end
            end
          end
          
          json = {
            "formulae": formulae.map(&:to_hash),
            "casks": casks.map(&:to_h)
          }
          
          puts JSON.pretty_generate(json)
        ensure
          $stderr.reopen(original_stderr)
        end
      end
      
      private
      
      def valid_tap?(tap)
        begin
          Readall.valid_tap?(tap, aliases: true)
        rescue Interrupt, RuntimeError
          false
        end
      end
    end
  end
end