# -*- coding: utf-8 -*-
from __future__ import unicode_literals

import os
import datetime

CONF_FILES = [
    "himport.conf",
    "himport.conf.local",
]

__settings = None


def get(opt):
    ret = __settings.get(opt)
    if ret is None:
        raise "Settings not found"
    return ret


def get_ledger_account(code):
    account_names = __settings.get("PC_NAMES")
    if code in account_names:
        return account_names[code]
    else:
        return code


__settings = {}


for conf_file in CONF_FILES:
    if os.path.isfile(conf_file):
        with open(conf_file) as f:
            code = compile(f.read(), conf_file, 'exec')
            exec(code, __settings)

if __settings is None:
    raise Exception(
        "Need a configuration file. One of %s" % ','.join(CONF_FILES))

if 'OUTPUT_DIR' not in __settings:
    raise Exception('need OUTPUT_DIR settings')

if 'PC_REFS' not in __settings:
    raise Exception('need PC_REFS settings')

if 'PC_NAMES' not in __settings:
    raise Exception('need PC_NAMES settings')

if 'ACCOUNTING_YEARS' in __settings:
    __settings['ACCOUNTING_YEARS'] = [(
        year,
        datetime.datetime.strptime(dbegin, "%Y/%m/%d").date(),
        datetime.datetime.strptime(dend, "%Y/%m/%d").date(),
        ) for (year, dbegin, dend) in __settings['ACCOUNTING_YEARS']]

if 'TVA_TYPE' not in __settings or\
        __settings['TVA_TYPE'] not in ["standard", "service_sur_debit", "none"]:
    raise Exception("need TVA_TYPE settings either: standard | service_sur_debit | none")