#!/usr/bin/env python

import os
import sys
import subprocess
from dimclient import DimClient
# needs to be adjusted for python3
from ConfigParser import ConfigParser

def print_help():
        print("Usage: bind_zone_output <config_file>")

if __name__ == "__main__":
        if len(sys.argv) < 2:
                print_help()
                sys.exit(-1)
        config = ConfigParser()
        config.read(sys.argv[1])

        if not config.has_section('default'):
                print("default section not found in config file")
                sys.exit(-1)
        if not config.has_section('command'):
                print("command section not found in config file")
                sys.exit(-1)
        if not config.has_option('default', 'server'):
                print("setting 'server' not found in config file")
                sys.exit(-1)
        if not config.has_option('default', 'output'):
                print("setting 'output' not found in config file")
                sys.exit(-1)
        if not config.has_option('default', 'zone_dir'):
                print("setting 'zone_dir' not found in config file")
                sys.exit(-1)
        if not config.has_option('default', 'filename'):
                print("setting 'filename' not found in config file")
                sys.exit(-1)

        c = DimClient(config.get('default', 'server'))
        if config.has_option('default', 'username'):
                c.login(config.get('default', 'username'), config.get('default', 'password'))

        to_update = c.output_update_list(output=config.get('default', 'output'))
        for update in to_update:
                filename = config.get('default', 'filename') % (update['zone_name'])
                filepath = os.path.join(config.get('default', 'zone_dir'), filename)
                if update['action'] != 'delete_zone':
                        output = c.zone_dump(update['zone_name'])
                        try:
                                with open(filepath, 'w+', 0644) as fp:
                                        fp.write(output)
                                        fp.write("\n")
                        except IOError as e:
                                print("could not write zone file '%s': %s" % (update['zone_name'], e))
                                sys.exit(-1)
                        if update['action'] == 'create_zone' and config.has_option('command', 'add_zone'):
                                command = config.get('command', 'add_zone') % (update['zone_name'])
                                subprocess.call(command.split(' '))
                        elif update['action'] != 'create_zone' and config.has_option('command', 'reload_zone'):
                                command = config.get('command', 'reload_zone') % (update['zone_name'])
                                subprocess.call(command.split(' '))
                elif update['action'] == 'delete_zone':
                        os.remove(filepath)
                        if config.has_option('command', 'del_zone'):
                                command = config.get('command', 'del_zone') % (update['zone_name'])
                                subprocess.call(command.split(' '))
                c.output_update_delete([update['id']])