#!/usr/bin/env ruby

require 'getoptlong'
require_relative '../lib/rdoc_link_checker'

options = GetoptLong.new(
  ['--html_dirpath', '-d', GetoptLong::REQUIRED_ARGUMENT],
  ['--onsite_only', '-l', GetoptLong::NO_ARGUMENT],
  ['--no_toc',      '-n', GetoptLong::NO_ARGUMENT],
  ['--version',     '-v', GetoptLong::NO_ARGUMENT],
  ['--help',        '-h', GetoptLong::NO_ARGUMENT]
)

def help
  path = File.absolute_path(__FILE__)
  dirname = File.dirname(File.dirname(path))
  filepath = File.join(dirname, 'doc', 'help.txt')
  puts File.read(filepath)
  exit
end

def version
  puts RDocLinkChecker::VERSION
  exit
end

onsite_only = false
no_toc = false
options.each do |option, argument|
  case option
  when '--onsite_only'
    onsite_only = true
  when '--no_toc'
    no_toc = true
  when '--help'
    help
  when '--version'
    version
  end
end

message = nil
case ARGV.size
when 0
  message = "Expected one argument; got none."
when 1
  # Okay.
else
  message = "Expected one argument, not #{ARGV.inspect}."
end
raise ArgumentError.new(message) if message

html_dirpath = ARGV[0]
RDocLinkChecker.new(
  html_dirpath,
  onsite_only: onsite_only,
  no_toc: no_toc
).check