#!/usr/bin/perl -w
#
#
#  rhimport
#
#  Copyright (C) 2009 Christian Pointner <equinox@helsinki.at>
#
#  This file is part of rhimport.
#
#  rhimport 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
#  any later version.
#
#  rhimport 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 rhimport. If not, see <http://www.gnu.org/licenses/>.
#

use strict;
use DBI;
use Date::Calc;
use XML::Feed;
use XML::Feed::Entry;
use XML::Feed::Content;
use XML::Feed::Enclosure;
use File::Fetch;
use IO::Handle;
use IPC::Open3;

use lib '/usr/local/share/rhimport/';
use rhimport;

my $DBHOST = "airplay";
my $DBUSER = "rivendell";
my $DBPW = "lldriven";
my $DB = "rivendell";

my $STAT_FILE = $ENV{'HOME'} . "/rhimport-wl.stat";
my $RSS_URL = "http://www.radiowienerlied.at/rss/podcast.xml";
my @PV_SCRIPT = ('/usr/bin/ssh', 'root@intranet', 'addnote', '82');

binmode(STDIN, ":utf8");
binmode(STDOUT, ":utf8");
binmode(STDERR, ":utf8");

my $user = `/usr/bin/id -un`;
$user =~ s/\n//;
my $group = "WienerLied";

my $dbh = DBI->connect("DBI:mysql:$DB:$DBHOST","$DBUSER","$DBPW") or die "Database Error: $DBI::errstr";
my @allowed_dbs = rhimport::get_dropboxes($dbh, $user, $group);

if(scalar(@allowed_dbs) != 1) {
  print "found multiple Dropboxes for this group?!\n";
  $dbh->disconnect();
  exit 0;
}
my $dropbox = $allowed_dbs[0]->{'PATH'};
my $to_cart = $allowed_dbs[0]->{'TO_CART'};    

my @today = Date::Calc::Today();
print "today: " . Date::Calc::Date_to_Text(@today) . "\n";

my $t = sprintf("%04d-%02d-%02d", $today[0], $today[1], $today[2]);
my $tfile = sprintf("%04d%02d%02d.mp3", $today[0], $today[1], $today[2]);
print "looking for files from today in RSS Feed\n";

my $feed = XML::Feed->parse(URI->new($RSS_URL))
  or die "Error fetching feed: " . XML::Feed->errstr;

my $file = "";
my $out_file = "";
for my $entry ($feed->entries) {
  if($entry->enclosure && $entry->enclosure->type eq "audio/mpeg") {
    my $ff = File::Fetch->new(uri => $entry->enclosure->url);
    next if($ff->output_file ne $tfile); # file not from today

    my $sum_title = $entry->title;
    my $sum_text = $entry->content->body;

    my $current_file = `cat $STAT_FILE`;
    if($current_file eq $ff->output_file) {
      print "Already downloaded file of today\n";
      $dbh->disconnect();
      exit 0;
    }
    $out_file = $ff->output_file;

    print $tfile . ": downloading " . $entry->enclosure->url . " (" . $entry->enclosure->length . " Bytes) .. ";
    $file = $ff->fetch( to => '/tmp' ) or die $ff->error;
    print "ok\n";


    print "summary:\n" . $sum_title . "\n\n" . $sum_text . "\n";
    
    my @tomorrow = Date::Calc::Add_Delta_Days($today[0], $today[1], $today[2], 1);
    push(@PV_SCRIPT, sprintf("%04d-%02d-%02d", $tomorrow[0], $tomorrow[1], $tomorrow[2]));
    my ($reader, $writer, $error ) = ( new IO::Handle, new IO::Handle, new IO::Handle );
    $writer->autoflush(1);
    local $SIG{CHLD} = 'DEFAULT';
    my $pid = open3($writer, $reader, $error, @PV_SCRIPT);
    binmode($reader, ":utf8");
    binmode($writer, ":utf8");
    binmode($error, ":utf8");
    print $writer $sum_title . "\n" . $sum_text;
    close $writer;
    waitpid $pid, 0;
    if ( $? >> 8 ) {
      print "\n\nPV: adding note returned non-zero value\n";
      print "STDERR:\n" . join('', <$error>) . "\n";
      print "STDOUT:\n" . join('', <$reader>) . "\n";
      print "Ignoring failed headline import!\n";
    } else {
      print join('', <$reader>) . "\n";
      print join('', <$error>) . "\n";
    }
    print "\n";
  }
}
if($file eq "" || !(-e "$file")) {
  print "No Entry found for today or download error - just clearing cart!\n";
  rhimport::check_key_file() or die "Import Key not found, use rhimport-create-id to create one\n";
  rhimport::clear_carts($dbh, $group, $to_cart);
  exit 1;
}

print "will import $file to dropbox $dropbox (cart=$to_cart)\n\n";

my $error_cb = sub {
  my ($text) = @_;

  print "\n$text";
  return 0;
};

rhimport::check_key_file() or die "Import Key not found, use rhimport-create-id to create one\n";

my $ret;
my $log;
$log = rhimport::clear_carts($dbh, $group, $to_cart);
my $import_log;
($ret, $import_log) = rhimport::import_single($file, $dropbox, $user, 0, $error_cb);
$log .= $import_log;

$dbh->disconnect();

unlink $file;

if(!$ret) {
  print "\nImport Error:\n";
  print $log;
  exit 1;
}

unlink($STAT_FILE);
open(my $fhs, '>', $STAT_FILE);
print $fhs $out_file;
close($fhs);

exit 0;