# -*- coding: utf-8 -*-

# Copyright(C) 2012 Florent Fourcot
#
# This file is part of weboob.
#
# weboob is free software: you can redistribute it and/or modify
# it under the terms of the GNU Affero General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# weboob is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU Affero General Public License for more details.
#
# You should have received a copy of the GNU Affero General Public License
# along with weboob. If not, see <http://www.gnu.org/licenses/>.


import sys

from weboob.capabilities.bill import ICapBill, Detail, Subscription
from weboob.tools.application.repl import ReplApplication
from weboob.tools.application.formatters.iformatter import IFormatter


__all__ = ['Boobill']


class SubscriptionsFormatter(IFormatter):
    MANDATORY_FIELDS = ('id', 'label')
    count = 0

    def flush(self):
        self.count = 0

    def format_dict(self, item):
        self.count += 1

        if self.interactive:
            backend = item['id'].split('@', 1)[1]
            id = '#%d (%s)' % (self.count, backend)
        else:
            id = item['id']

        return u'%s%s%s %s' % (self.BOLD, id, self.NC, item['label'])


class Boobill(ReplApplication):
    APPNAME = 'boobill'
    VERSION = '0.c'
    COPYRIGHT = 'Copyright(C) 2012 Florent Fourcot'
    DESCRIPTION = 'Console application allowing to get and download bills.'
    CAPS = ICapBill
    COLLECTION_OBJECTS = (Subscription, )
    EXTRA_FORMATTERS = {'subscriptions':   SubscriptionsFormatter,
                        }
    DEFAULT_FORMATTER = 'table'
    COMMANDS_FORMATTERS = {'subscriptions':   'subscriptions',
                           'ls':              'subscriptions',
                          }


    def main(self, argv):
        self.load_config()
        return ReplApplication.main(self, argv)

    def do_subscriptions(self, line):
        """
        subscriptions

        List subscriptions
        """
        for backend, subscription in self.do('iter_subscription'):
            self.add_object(subscription)
            self.format(subscription)
        self.flush()

    def do_details(self, id):
        """
        details Id

        Get details of a subscription.
        """

        id, backend_name = self.parse_id(id)
        if not id:
            print >>sys.stderr, 'Error: please give a subscription ID (hint: use subscriptions command)'
            return 2
        names = (backend_name,) if backend_name is not None else None

        def do(backend):
            return backend.get_details(id)

        # XXX: should be generated by backend?
        mysum = Detail()
        mysum.label = "Sum"
        mysum.infos = "Generated by boobill"
        mysum.price = 0.
        for backend, detail in self.do(do, backends=names):
            self.format(detail)
            mysum.price = detail.price + mysum.price

        self.format(mysum)
        self.flush()

    def do_history(self, id):
        """
        history Id

        Get the history of a subscription.
        """

        id, backend_name = self.parse_id(id)
        if not id:
            print >>sys.stderr, 'Error: please give a subscription ID (hint: use subscriptions command)'
            return 2
        names = (backend_name,) if backend_name is not None else None

        def do(backend):
            return backend.iter_history(id)

        for backend, history in self.do(do, backends=names):
            self.format(history)
        self.flush()

    def do_bills(self, id):
        """
        bills Id

        Get the list of bills documents for subscription 
        id is the identifier of the backend
        """

        id, backend_name = self.parse_id(id)
        if not id:
            print >>sys.stderr, 'Error: please give a subscription ID (hint: use subscriptions command)'
            return 2
        names = (backend_name,) if backend_name is not None else None

        def do(backend):
            return backend.iter_bills(id)

        for backend, date in self.do(do, backends=names):
            self.format(date)
        self.flush()

    def do_download(self, line):
        """
        download Id [FILENAME]

        download the bill 
        id is the identifier of the bill (hint: try bills command)
        FILENAME is where to write the file. If FILENAME is '-',
        the file is written to stdout.
        """
        id, dest = self.parse_command_args(line, 2, 1)
        id, backend_name = self.parse_id(id)
        if not id:
            print >>sys.stderr, 'Error: please give a bill ID (hint: use bills command)'
            return 2
        names = (backend_name,) if backend_name is not None else None

        if dest is None:
            for backend, bill in self.do('get_bill', id, backends=names):
                dest = id + "." + bill.format

        for backend, buf in self.do('download_bill', id, backends=names):
            if buf:
                if dest == "-":
                    print buf
                else:
                    try:
                        with open(dest, 'w') as f:
                            f.write(buf)
                    except IOError, e:
                        print >>sys.stderr, 'Unable to write bill in "%s": %s' % (dest, e)
                        return 1
                return