#!/usr/bin/env python
# -*- coding: utf-8 -*-
# PYTHON_ARGCOMPLETE_OK

import dingguo.parser
import email
import os
import shutil
import sys
import yaml

def compute(mail_path, catalogue, register_path):

    orders = []

    if mail_path:
        for p in mail_path:
            with open(p, 'r') as mail:
                mail_orders = dingguo.parser.parse_order_confirmation_mail(
                        email.message_from_file(mail)
                        )
                orders += mail_orders
            if catalogue:
                for order in mail_orders:
                    order_dir_path = os.path.join(order.platform, order.order_id)
                    if not os.path.isdir(order_dir_path):
                        os.makedirs(order_dir_path)
                    shutil.copyfile(p, os.path.join(order_dir_path, os.path.basename(p)))
                os.remove(p)
    else:
        msg = email.message_from_string(sys.stdin.read())
        orders += dingguo.parser.parse_order_confirmation_mail(msg)

    if register_path:
        if os.path.exists(register_path):
            with open(register_path, 'r') as register_file:
                registry = yaml.load(register_file.read().decode('utf-8'))
        else:
            registry = dingguo.OrderRegistry()
        for order in orders:
            registry.register(order)
        with open(register_path, 'w') as register:
            register.write(yaml.dump(registry, default_flow_style = False, allow_unicode = True))
        
    print(yaml.dump(orders, default_flow_style = False, allow_unicode = True))

def _init_argparser():

    import argparse
    argparser = argparse.ArgumentParser(description = None)
    argparser.add_argument('--register', metavar = 'path', dest = 'register_path')
    argparser.add_argument('--catalogue', action='store_true')
    argparser.add_argument('mail_path', nargs = '*')
    return argparser

def main(argv):

    argparser = _init_argparser()
    try:
        import argcomplete
        argcomplete.autocomplete(argparser)
    except ImportError:
        pass
    args = argparser.parse_args(argv)

    compute(**vars(args))

    return 0

if __name__ == "__main__":
    sys.exit(main(sys.argv[1:]))