#!/usr/bin/env python

from __future__ import print_function

import os, sys
from optparse import OptionParser
import yaml
from mako.template import Template

import pprint

def main():
    # Arguments
    parser = OptionParser()

    parser.add_option('-c', '--config', dest='config', default='config.yml',
                      help='Configuration file', metavar="FILE")
    parser.add_option('-t', '--template', dest='template', default='haproxy.cfg.mako',
                       help='haproxy.cfg Mako template')


    (options, args) = parser.parse_args()

    try:
        config = yaml.load(open(options.config, 'r'))
    except Exception as e:
        print(e, file=sys.stderr)
        config = None

    if not config or type(config) != dict:
        print('Unable to load configuration: "{}"'.format(options.config), file=sys.stderr)
        sys.exit(-1)

    print(Template(filename=options.template).render(config=config))

if __name__ == '__main__':
    main()