#!/usr/bin/env python2
# -*- coding: utf-8 -*-

# jp: a SàT command line tool
# Copyright (C) 2009-2018 Jérôme Poisson (goffi@goffi.org)

# This program 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.

# This program 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 this program.  If not, see <http://www.gnu.org/licenses/>.


import base
from sat.core.i18n import _
from sat_frontends.jp.constants import Const as C
from sat_frontends.jp import common
from sat.tools.common.ansi import ANSI as A
from functools import partial
import codecs
import json

__commands__ = ["Forums"]

FORUMS_TMP_DIR = u"forums"


class Edit(base.CommandBase, common.BaseEdit):
    use_items=False

    def __init__(self, host):
        base.CommandBase.__init__(self, host, 'edit', use_pubsub=True, use_draft=True, use_verbose=True, help=_(u'edit forums'))
        common.BaseEdit.__init__(self, self.host, FORUMS_TMP_DIR)
        self.need_loop=True

    def add_parser_options(self):
        self.parser.add_argument("-k", "--key", type=base.unicode_decoder, default=u'',
                                 help=_(u"forum key (DEFAULT: default forums)"))

    def getTmpSuff(self):
        """return suffix used for content file"""
        return u'json'

    def forumsSetCb(self):
        self.disp(_(u'forums have been edited'), 1)
        self.host.quit()

    def publish(self, forums_raw):
        self.host.bridge.forumsSet(
            forums_raw,
            self.args.service,
            self.args.node,
            self.args.key,
            self.profile,
            callback=self.forumsSetCb,
            errback=partial(self.errback,
                            msg=_(u"can't set forums: {}"),
                            exit_code=C.EXIT_BRIDGE_ERRBACK))

    def forumsGetCb(self, forums_json):
        content_file_obj, content_file_path = self.getTmpFile()
        forums_json = forums_json.strip()
        if forums_json:
            # we loads and dumps to have pretty printed json
            forums = json.loads(forums_json)
            # cf. https://stackoverflow.com/a/18337754
            f = codecs.getwriter('utf-8')(content_file_obj)
            json.dump(forums, f, ensure_ascii=False, indent=4)
            content_file_obj.seek(0)
        self.runEditor("forums_editor_args", content_file_path, content_file_obj)

    def forumsGetEb(self, failure_):
        # FIXME: error handling with bridge is broken, need to be properly fixed
        if failure_.condition == u'item-not-found':
            self.forumsGetCb(u'')
        else:
            self.errback(failure_,
                         msg=_(u"can't get forums structure: {}"),
                         exit_code=C.EXIT_BRIDGE_ERRBACK)

    def start(self):
        self.host.bridge.forumsGet(
            self.args.service,
            self.args.node,
            self.args.key,
            self.profile,
            callback=self.forumsGetCb,
            errback=self.forumsGetEb)


class Get(base.CommandBase):

    def __init__(self, host):
        extra_outputs = {'default': self.default_output}
        base.CommandBase.__init__(self, host, 'get', use_output=C.OUTPUT_COMPLEX, extra_outputs=extra_outputs, use_pubsub=True, use_verbose=True, help=_(u'get forums structure'))
        self.need_loop=True

    def add_parser_options(self):
        self.parser.add_argument("-k", "--key", type=base.unicode_decoder, default=u'',
                                 help=_(u"forum key (DEFAULT: default forums)"))

    def default_output(self, forums, level=0):
        for forum in forums:
            keys = list(forum.keys())
            keys.sort()
            try:
                keys.remove(u'title')
            except ValueError:
                pass
            else:
                keys.insert(0, u'title')
            try:
                keys.remove(u'sub-forums')
            except ValueError:
                pass
            else:
                keys.append(u'sub-forums')

            for key in keys:
                value = forum[key]
                if key == 'sub-forums':
                    self.default_output(value, level+1)
                else:
                    if self.host.verbosity < 1 and key != u'title':
                        continue
                    head_color = C.A_LEVEL_COLORS[level % len(C.A_LEVEL_COLORS)]
                    self.disp(A.color(level * 4 * u' ',
                                      head_color,
                                      key,
                                      A.RESET,
                                      u': ',
                                      value))

    def forumsGetCb(self, forums_raw):
        if not forums_raw:
            self.disp(_(u'no schema found'), 1)
            self.host.quit(1)
        forums = json.loads(forums_raw)
        self.output(forums)
        self.host.quit()

    def start(self):
        self.host.bridge.forumsGet(
            self.args.service,
            self.args.node,
            self.args.key,
            self.profile,
            callback=self.forumsGetCb,
            errback=partial(self.errback,
                            msg=_(u"can't get forums: {}"),
                            exit_code=C.EXIT_BRIDGE_ERRBACK))



class Forums(base.CommandBase):
    subcommands = (Get, Edit)

    def __init__(self, host):
        super(Forums, self).__init__(host, 'forums', use_profile=False, help=_(u'Forums structure edition'))