#!/usr/bin/env ruby

$:.unshift File.join(File.dirname(__FILE__), '../lib')

require 'logger'
require 'optparse'

require 'yq'

$stdout.sync = $stderr.sync = true
unless defined?(LOGGER)
  LOGGER = Logger.new($stderr) 
end
LOGGER.level = Logger::INFO

@options = {
  context: :main_loop
}


def prereqs 
  ARGV << '--help' if ARGV.empty?

  opts = OptionParser.new do |opts|
    opts.banner = "Usage: #{File.basename($0)}"
    opts.separator ''
    opts.on_tail('-h', '--help', 'Show this message') do
      puts opts
      exit 0
    end
    opts.on('--verbose', '-v', 'verbose') do 
      LOGGER.level = Logger::DEBUG
    end
    opts.on("--develop", "Run in developer mode") do
      @options[:context] = :develop
    end
  end
  opts.parse!
  
  required_vars = %w[
  ]
  required_vars.each do |v|
    raise "#{v} must be specified in the environment variables" unless ENV[v]
  end

end

def start
  begin
    @yaml = $stdin.read

    puts Yq.search_yaml(ARGV[0], @yaml)

  rescue => e
    LOGGER.error "Unhandled exception #{e.class}: #{e.message}"
    e.backtrace.each do |v|
      LOGGER.debug v
    end
    raise
  end

end

def develop
  require 'pry'
  LOGGER.level = Logger::DEBUG
  LOGGER.info "Develop mode"
  start
  binding.pry
end

def main_loop
  start
end


prereqs
self.send(@options[:context])