#!/usr/bin/env perl
# pyimportcan.pl -- Python imports canonical format filter
# Copyright (C) 2013-2015 Sergey Matveev (stargrave@stargrave.org)
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU 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 General Public License for more details.
# 
# You should have received a copy of the GNU General Public License
# along with this program.  If not, see <http://www.gnu.org/licenses/>.
#
# From that kind of imports:
#
#     from waaccounts.models import OrgRole
#     import math
#     from waaccounts.models import UserAccount
#     from waadv.filters import AdvCampaignFilterSet as foo1
#     from waadv.filters import AdvCampaignBidFilterSet
#     from waadv.filters import AdvCampaignUniqueShowFilterSet as foo2
#     from waadv.filters import VasttaskFilterSet
#     from waadv.forms import AdvCampaignCreateForm
#     from waadv.forms import PriceListTotalBudgetDiscountFormset
#     from waadv.models import Adv
#     from waadv.models import PriceListTotalBudgetDiscount
#     from waadv.models import VastTask
#     from wacontent.models import VrContractGroup
#     from wacatalog.models import AdvGroup
#     from wahelpers.counters import adv_campaign_click_counter_loader
#     from wahelpers.counters import adv_video_view_fact_counter_loader
#     from wahelpers.counters import adv_view_percent
#     from wahelpers.counters import ctr
#     from wahelpers.functions import get_json_rpc_proxy, get_return_url
#     <<<<<<< HEAD
#     from waorigin.kendo_menus.toolbar import KendoGridToolbar
#     from waorigin.kendo_menus.toolbar_button import KendoToolbarButton
#     =======
#     from http_utils import JSONResponse
#     from wahelpers.counters import (
#         adv_campaign_click_counter_loader,
#         adv_campaign_click_fact_counter_loader,
#         ctr,
#         adv_view_percent,
#     )
#     from waorigin.kendo_menus.toolbar_button import (
#     AddKendoToolbarButton,
#     StatusKendoToolbarButton
#     )
#     from waorigin.models import Content, ContentCategory3 as foo4, ContentCategory2, Files
#     from waorigin.views import filter_view, model_autocompletion, \
#         create_update_with_auto_user, get_objects_for_edit_many
#     from wapartners.models import PrNomenclature, PrSite
#     >>>>>>> 1bf0b64... Добавил основные кнопки в виде классов, поправил вьюху refs #11992
#     from waorigin.kendo_data_source import KendoDataSourceView
#     from waorigin.models import Content
#     from waorigin.models import ContentCategory2
#     from waorigin.models import ContentCategory3
#     from waorigin.models import Files
#     from waorigin.views import create_update_with_auto_user
#     from waorigin.views import filter_view
#     from waorigin.views import get_objects_for_edit_many
#     from waorigin.views import model_autocompletion
#     from wapartners.models import PrSite
#     from wapartners.models import PrNomenclature
#
# it makes the following one (by feeding it to stdin and capturing on
# stdout):
#
#     import math
#     from http_utils import JSONResponse
#     from waaccounts.models import OrgRole
#     from waaccounts.models import UserAccount
#     from waadv.filters import AdvCampaignBidFilterSet
#     from waadv.filters import AdvCampaignFilterSet as foo1
#     from waadv.filters import AdvCampaignUniqueShowFilterSet as foo2
#     from waadv.filters import VasttaskFilterSet
#     from waadv.forms import AdvCampaignCreateForm
#     from waadv.forms import PriceListTotalBudgetDiscountFormset
#     from waadv.models import Adv
#     from waadv.models import PriceListTotalBudgetDiscount
#     from waadv.models import VastTask
#     from wacatalog.models import AdvGroup
#     from wacontent.models import VrContractGroup
#     from wahelpers.counters import adv_campaign_click_counter_loader
#     from wahelpers.counters import adv_campaign_click_fact_counter_loader
#     from wahelpers.counters import adv_video_view_fact_counter_loader
#     from wahelpers.counters import adv_view_percent
#     from wahelpers.counters import ctr
#     from wahelpers.functions import get_json_rpc_proxy
#     from wahelpers.functions import get_return_url
#     from waorigin.kendo_data_source import KendoDataSourceView
#     from waorigin.kendo_menus.toolbar import KendoGridToolbar
#     from waorigin.kendo_menus.toolbar_button import AddKendoToolbarButton
#     from waorigin.kendo_menus.toolbar_button import KendoToolbarButton
#     from waorigin.kendo_menus.toolbar_button import StatusKendoToolbarButton
#     from waorigin.models import Content
#     from waorigin.models import ContentCategory2
#     from waorigin.models import ContentCategory3
#     from waorigin.models import ContentCategory3 as foo4
#     from waorigin.models import Files
#     from waorigin.views import create_update_with_auto_user
#     from waorigin.views import filter_view
#     from waorigin.views import get_objects_for_edit_many
#     from waorigin.views import model_autocompletion
#     from wapartners.models import PrNomenclature
#     from wapartners.models import PrSite

use strict;
use warnings;

my $buf;
my $con;
my @imports;
my %parsed;

# Collect strings and aggregate the splitted ones
while(<>){
    next if /^[<=>]{2,}/;
    next if /^\s*#/;
    chop;
    $buf = ($con ? $buf : "") . $_;
    $con = /[\\,\(]\s*$/ ? 1 : 0;
    next if /^\s*\)*\s*$/;
    push @imports, $buf;
};

# Consolidate information from where what is imported
foreach (@imports) {
    s/[\\\(\)]//g;
    s/  */ /g;
    next if /import\s*$/;
    /^(.*)\s*import\s*(.*)$/;
    my ($where, $what) = ($1, $2);
    map { $parsed{$where}->{$_}++ } split /\s*,\s*/, $what;
};

foreach my $where (sort keys %parsed){
    map { print $where . "import $_\n" } sort keys %{$parsed{$where}};
};