brew/Library/Homebrew/extend/os/linux/requirements/osxfuse_requirement.rb

# typed: false
# frozen_string_literal: true

require "requirement"

class OsxfuseRequirement < Requirement
  extend T::Sig

  def initialize(tags = [])
    odisabled "depends_on :osxfuse", 'on_linux do; depends_on "libfuse"; end'
    super(tags)
  end

  download "https://github.com/libfuse/libfuse"

  satisfy(build_env: false) do
    next true if libfuse_formula_exists? && Formula["libfuse"].latest_version_installed?

    includedirs = %w[
      /usr/include
      /usr/local/include
    ]
    next true if (includedirs.map do |dir|
      File.exist? "#{dir}/fuse.h"
    end).any?

    false
  end

  sig { returns(String) }
  def message
    msg = "libfuse is required for this software.\n"
    if libfuse_formula_exists?
      <<~EOS
        #{msg}Run `brew install libfuse` to install it.
      EOS
    else
      msg + super
    end
  end

  private

  sig { returns(T::Boolean) }
  def libfuse_formula_exists?
    begin
      Formula["libfuse"]
    rescue FormulaUnavailableError
      return false
    end
    true
  end
end