#!/usr/bin/env ruby

require 'optparse'
require 'fileutils'

OptionParser.new do |opts|
  opts.banner = "Usage: #{File.basename($0)} [path]"

  opts.on("-h", "--help", "Displays this help info") do
    puts opts
    exit 0
  end

  begin
    opts.parse!(ARGV)
  rescue OptionParser::ParseError => e
    warn e.message
    puts opts
    exit 1
  end
end

if ARGV.empty?
  abort "Please specify the directory to capify, e.g. `#{File.basename($0)} .'"
elsif !File.exists?(ARGV.first)
  abort "`#{ARGV.first}' does not exist."
elsif !File.directory?(ARGV.first)
  abort "`#{ARGV.first}' is not a directory."
elsif !File.writable?(ARGV.first)
  abort "`#{ARGV.first}' is not writable by you."
elsif ARGV.length > 1
  abort "Too many arguments; please specify only the directory to capify-wp."
end

def template_dir()
  t = ["#{File.dirname(File.expand_path(__FILE__))}/../lib/capistrano/templates",
       "#{Gem::Specification.find_by_name("capistrano-wp")}/lib/capisrano/templates"]
  t.each { |dir| return dir if File.readable? dir }
  raise "Paths invalid: #{t}" if not File.readable? t
end

base = ARGV.shift
templates = template_dir()

Dir.glob("#{templates}/**/*").each do |file|
  target = file.gsub(templates, "")
  next if target.empty?

  target = File.join(base, target)

  if File.exists? target
    warn "[skip] '#{target}' already exists"
  elsif File.exists? target.downcase
    warn "[skip] '#{target.downcase}' exists, which could conflict with `#{target}'"
  else
    if File.directory? file
      puts "[add] making directory '#{target}'"
      FileUtils.mkdir_p(target)
    else
      puts "[add] writing '#{target}'"
      FileUtils.cp file, target
    end
  end
end

puts "[done] capify-wped!"