# typed: strict
# frozen_string_literal: true

require "formula"
require "cli/parser"

module Homebrew
  module_function

  sig { returns(CLI::Parser) }
  def edit_args
    Homebrew::CLI::Parser.new do
      description <<~EOS
        Open a <formula>, <cask> or <tap> in the editor set by `EDITOR` or `HOMEBREW_EDITOR`,
        or open the Homebrew repository for editing 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."
      switch "--print-path",
             description: "Print the file path to be edited, without opening an editor."

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

      named_args [:formula, :cask, :tap], without_api: true
    end
  end

  sig { void }
  def edit
    args = edit_args.parse

    unless (HOMEBREW_REPOSITORY/".git").directory?
      odie <<~EOS
        Changes will be lost!
        The first time you `brew update`, all local changes will be lost; you should
        thus `brew update` before you `brew edit`!
      EOS
    end

    paths = if args.named.empty?
      # Sublime requires opting into the project editing path,
      # as opposed to VS Code which will infer from the .vscode path
      if which_editor(silent: true) == "subl"
        ["--project", "#{HOMEBREW_REPOSITORY}/.sublime/homebrew.sublime-project"]
      else
        # If no formulae are listed, open the project root in an editor.
        [HOMEBREW_REPOSITORY]
      end
    else
      edit_api_message_displayed = T.let(false, T::Boolean)
      args.named.to_paths.select do |path|
        core_formula_path = path.fnmatch?("**/homebrew-core/Formula/**.rb", File::FNM_DOTMATCH)
        core_cask_path = path.fnmatch?("**/homebrew-cask/Casks/**.rb", File::FNM_DOTMATCH)
        core_formula_tap = path == CoreTap.instance.path
        core_cask_tap = path == CoreCaskTap.instance.path

        if path.exist?
          if (core_formula_path || core_cask_path || core_formula_tap || core_cask_tap) &&
             !edit_api_message_displayed &&
             !Homebrew::EnvConfig.no_install_from_api? &&
             !Homebrew::EnvConfig.no_env_hints?
            opoo <<~EOS
              `brew install` ignores locally edited #{(core_cask_path || core_cask_tap) ? "casks" : "formulae"} \
              if `HOMEBREW_NO_INSTALL_FROM_API` is not set.
            EOS
            edit_api_message_displayed = true
          end
          next path
        end

        name = path.basename(".rb").to_s

        if (tap_match = Regexp.new(HOMEBREW_TAP_DIR_REGEX.source + /$/.source).match(path.to_s))
          raise TapUnavailableError, CoreTap.instance.name if core_formula_tap
          raise TapUnavailableError, CoreCaskTap.instance.name if core_cask_tap

          raise TapUnavailableError, "#{tap_match[:user]}/#{tap_match[:repo]}"
        elsif args.cask? || core_cask_path
          if !CoreCaskTap.instance.installed? && Homebrew::API::Cask.all_casks.key?(name)
            command = "brew tap --force #{CoreCaskTap.instance.name}"
            action = "tap #{CoreCaskTap.instance.name}"
          else
            command = "brew create --cask --set-name #{name} $URL"
            action = "create a new cask"
          end
        elsif core_formula_path && !CoreTap.instance.installed? && Homebrew::API::Formula.all_formulae.key?(name)
          command = "brew tap --force #{CoreTap.instance.name}"
          action = "tap #{CoreTap.instance.name}"
        else
          command = "brew create --set-name #{name} $URL"
          action = "create a new formula"
        end

        message = <<~EOS
          #{name} doesn't exist on disk.
          Run #{Formatter.identifier(command)} to #{action}!
        EOS
        raise UsageError, message
      end.presence
    end

    if args.print_path?
      paths.each(&method(:puts))
      return
    end

    exec_editor(*paths)
  end
end