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

# Standard Python Library
from optparse import OptionParser
import os
import os.path
import sys
import datetime

# PLSA Library
import plsa
from plsa.utility import list_translations
from plsa.mail import openComposer

# piksemel
import piksemel

# i18n
import gettext
__trans = gettext.translation("plsa", fallback=True)
_ = __trans.ugettext

# l10n
import locale
locale.setlocale(locale.LC_ALL, '')

# Error codes
SUCCESS, FAIL_USAGE, FAIL_READ, FAIL_XML, FAIL_LANG, FAIL_MAIL = xrange(6)

def main():
    language = os.environ["LANG"][:2]

    version = "1.0"
    usage = "%prog <options> advisory.xml"

    parser = OptionParser(usage=usage,  version="%prog " + version)

    parser.add_option("-l", "--language", dest="language",
                      help=_("generate advisory for locale LANG (default: %s)") % language, metavar=_("LANG"))
    parser.add_option("-m", "--mail", dest="mail",
                      help=_("open KMail compose dialog"), action="store_true")

    options, args = parser.parse_args()

    if len(args) == 0:
        parser.print_help()
        return FAIL_USAGE

    if not options.language:
        options.language = language

    if options.language not in list_translations("plsa"):
        print _("'%s' locale is not supported.") % options.language
        return FAIL_LANG

    # Read advisory xml
    if not os.path.isfile(args[0]) or not os.access(args[0], os.R_OK):
        print _("Unable to read %s.") % args[0]
        return FAIL_READ

    adv = plsa.advisory(options.language)

    try:
        adv.import_xml(args[0])
    except plsa.Error, e:
        print _("XML file has errors:")
        for i in adv.errors:
            print "  " + i
        return FAIL_XML

    # Build advisory text
    text = adv.build_text()

    if options.mail:
        title = "[PLSA-%s-%s] %s" % (datetime.date.today().year,adv.data["id"],adv.data["title"])
        if not openComposer('', '', '', title, text):
            return FAIL_MAIL
    else:
        print text


    return SUCCESS

if __name__ == "__main__":
    sys.exit(main())