%# -*-html-*-
%#
%# Pastebin creation webservice for Odin
%#
%# (c) 2015 Mark Wooding
%#
%#----- Licensing notice ----------------------------------------------------
%#
%# This file is part of the `odin.gg' service, `odin-cgi'.
%#
%# `odin-cgi' 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.
%#
%# `odin-cgi' 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 `odin-cgi'; if not, see
%# <http://www.gnu.org/licenses/>.
%#
<%perl>
	my $tag = $m->dhandler_arg;

	sub set_handoff_cookie ($$%) {
	  my ($tag, $edit, %attr) = @_;
	  Odin::bake_cookie $r, "odin-handoff.$tag=$edit",
	    -path => "$Odin::PASTEBIN_PATH/", %attr;
	}

	sub hasuff ($) {
	  my ($edit) = @_;
	  return $Odin::COOKIE{"odin-cookie-probe"} ? "" : "?honc=$edit";
	}

	Odin::bake_cookie $r, "odin-cookie-probe=t";

	my %props = (
	  lang => $lang, title => $title,
	  content => Odin::tidy_pastebin_content $content
	);

	if (length $tag) {

	  if (!defined $edit) {
	    my $db = Odin::open_db;
	    Odin::get_pastebin $db, $tag, my %old;
	    if ($op eq "raw") {
	      $r->content_type("text/plain; charset=utf8");
	      $m->print($old{content});
	    } else {
	      $edit = $Odin::COOKIE{"odin-handoff.$tag"};
	      $m->comp("%show", tag => $tag,
		       honc => $honc, edit => $edit // $honc, %old);
	    }
	  } else {
	    if ($op eq "del") {
	      Odin::delete_pastebin $tag, $edit;
	      set_handoff_cookie $tag, "nil", -max_age => 5;
	      $m->redirect("$Odin::PASTEBIN/");
	    } else {
	      set_handoff_cookie $tag, $edit;
	      my $editp = Odin::update_pastebin $tag, $edit, %props;
	      if ($editp) {
		$m->redirect("$Odin::PASTEBIN/$tag" . hasuff $edit);
	      } else {
		$m->comp("%edit", tag => $tag, edit => $edit, %props);
	      }
	    }
	  }
	} elsif (defined $content) {
	  ($tag, $edit) = Odin::new_pastebin %props;
	  set_handoff_cookie $tag, $edit;
	  $m->redirect("$Odin::PASTEBIN/$tag" . hasuff $edit);
	} else {
	  Odin::path_info($r) =~ m:/$:
	    or $m->redirect("$Odin::PASTEBIN/", 301);
	  $m->comp("%edit");
	}
</%perl>
%#
<%args>
	$content => undef
	$edit => undef
	$lang => undef
	$title => undef
	$honc => undef
	$op => "edit"
</%args>
%#
<%def .notfound>
<&| SELF:error, title => "not found", status => 404 &>\
tag &lsquo;<% $tag %>&rsquo; not found
</&>
<%args>
	$tag
</%args>
</%def>
%#
<%def .badpaste>
<&| SELF:error, status => 400 &>\
invalid paste content
</&>
<%args>
	$tag
</%args>
</%def>
%#
<%def .badhash>
<&| SELF:error, status => 403 &>\
incorrect edit key
</&>
<%args>
	$tag
</%args>
</%def>
%#
<%once>
	use utf8;
	use Digest::SHA qw(sha256_hex);
	use Odin;
</%once>