#!/usr/bin/env ruby
STDOUT.sync = true

require 'trollop'
opts = Trollop.options do
  banner <<-EOS
jgd is an automated deployer of Jekyll site to Github Pages

Usage: jgd [options]
  EOS
  opt :url, 'Github URL', type: String, default: ''
  opt :branch, 'Destination branch', type: String, default: 'gh-pages'
  opt :branch_from, 'Source branch', type: String, default: 'master'
  opt :config, 'Deploy Config File', type: String, default: '_config-deploy.yml'
  opt :bundle, 'Use bundle'
end

branch = opts[:branch]
branch_from = opts[:branch_from]
config = opts[:config]
fail 'branch can\'t be empty' if branch.empty?
fail 'branch-from can\'t be empty' if branch_from.empty?
fail 'config can\'t be empty' if config.empty?
url = opts[:url]
url = `git config --get remote.origin.url`.strip if url.empty?
bundle = opts[:bundle] ? '"bundle exec"' : ''

spec = Gem::Specification.find_by_name('jgd')
root = spec.gem_dir
script = File.join(root, 'bash/deploy.sh')

fail 'deployment failed, see log above' \
  unless system("#{script} #{url} #{branch} #{branch_from} #{config} #{bundle}")