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#!/usr/bin/perl -w
#
#  rhrdlibs
#
#  Copyright (C) 2015-2016 Christian Pointner <equinox@helsinki.at>
#
#  This file is part of rhrdlibs.
#
#  rhrdlibs 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
#  any later version.
#
#  rhrdlibs 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 rhrdlibs. If not, see <http://www.gnu.org/licenses/>.
#

use strict;
use lib '../lib/';
use RHRD::rddb;
use RHRD::utils;
use Date::Calc;

sub print_usage
{
  print STDERR "Usage: rhrd-pool list\n" .
               "       rhrd-pool (show|remove) <short-name>\n" .
               "       rhrd-pool add <groupname> <title>\n" .
               "       rhrd-pool edit <short-name> <title>\n";
}

sub list
{
  my ($ctx) = @_;

  my @pools = RHRD::rddb::list_musicpools($ctx);
  if(!defined $pools[0] && defined $pools[1]) {
    print STDERR "$pools[1]: $pools[2]";
    return 1;
  }
  for my $href (@pools) {
    print $href->{'SHORTNAME'} . ": " . $href->{'TITLE'} . "\n";
  }
  return 0;
}

sub show
{
  my ($ctx, $shortname) = @_;

  my ($pool, $status, $errorstring) = RHRD::rddb::get_musicpool_info($ctx, $shortname);
  unless (defined $pool) {
    print STDERR "$errorstring\n";
    return 1;
  }
  print $pool->{'TITLE'} . " (" . $pool->{'SHORTNAME'} . "):\n";
  print " group: " . $pool->{'GROUP'} . ", carts: " . $pool->{'LOW_CART'} . "-" . $pool->{'HIGH_CART'} . "\n"; # TODO print info about cart usage
  return 0;
}

sub add__check_arguments
{
  my ($groupname, $title) = @_;

  if($groupname !~ m/^[-a-zA-Z0-9_]{1,10}$/) {
    print STDERR "name '" . $groupname . "' contains illegal characters or is too long/short\n";
    print STDERR "  only a-z, A-Z, 0-9 and _,- are allowed and the length must be between 1 and 10\n";
    return 1;
  }

  return 0;
}

sub add
{
  my ($ctx, $groupname, $title) = @_;

  my ($ret) = add__check_arguments($groupname, $title);
  if($ret) {
    return $ret;
  }

  print " * creating pool: '" . $title . "' with group '" . $groupname . "'\n";

  my ($result, $status, $errorstring) = RHRD::rddb::check_group($ctx, $groupname);
  unless(defined $result) {
    print STDERR $status . ": " . $errorstring . "\n";
    return 1;
  }
  if($result) {
    print STDERR "group " . $groupname . " already exists!\n";
    return 1
  }

  (my $num, $status, $errorstring) = RHRD::rddb::create_musicpool_group($ctx, $groupname);
  unless(defined $num) {
    print STDERR $status . ": " . $errorstring . "\n";
    return 1;
  }
  my $shortname = sprintf("P%02d", $num);
  my $color = RHRD::utils::get_musicpool_color($num);
  print " * created group '" . $groupname . "' --> pool shortname / color: " . $shortname . " / " . $color . "\n";

  ($result, $status, $errorstring) = RHRD::rddb::create_musicpool_event($ctx, $shortname, $groupname, $color);
  unless(defined $result) {
    print STDERR $status . ": " . $errorstring . "\n";
    return 1;
  }
  print " * created event\n";

  ($result, $status, $errorstring) = RHRD::rddb::create_musicpool_clock($ctx, $shortname, $color);
  unless(defined $result) {
    print STDERR $status . ": " . $errorstring . "\n";
    return 1;
  }
  print " * created clock (color: " . $color . ")\n";

  ($result, $status, $errorstring) = RHRD::rddb::create_musicpool_dropbox($ctx, $groupname, $shortname);
  unless(defined $result) {
    print STDERR $status . ": " . $errorstring . "\n";
    return 1;
  }
  print " * created dropbox for pool .. " . $result . " rows affected\n";

  print " * finished\n";

  return 0;
}


sub edit
{
  my ($ctx, $shortname, $title) = @_;

  my ($result, $status, $errorstring) = RHRD::rddb::update_musicpool_title($ctx, $shortname, $title);
  unless(defined $result) {
    print STDERR $status . ": " . $errorstring . "\n";
    return 1;
  }
  if ($result != 1) {
    print "pool '" . $shortname ."' does not exist.\n";
    return 1;
  }

  print "pool '" . $shortname . "' successfully changed!\n";
  return 0;
}

sub remove
{
  my ($ctx, $shortname) = @_;

  my @results = RHRD::rddb::remove_musicpool($ctx, $shortname);
  if(!defined $results[0] && defined $results[2]) {
    print STDERR $results[1] . ": " . $results[2] . "\n";
    return 1;
  }
  for my $href (@results) {
    print int($href->{cnt}) . " " . $href->{name} . " deleted\n";
  }

  return 0;
}

my $num_args = $#ARGV + 1;
if($num_args < 1) {
  print_usage();
  exit(1);
}
my $cmd = $ARGV[0];
my $ret = 0;

my ($ctx, $status, $errorstring) = RHRD::rddb::init();
if(defined $ctx) {
  if($cmd eq "list") {
    if($num_args > 1) {
      print_usage();
      $ret = 1;
    } else {
      $ret = list($ctx)
    }
  }
  elsif($cmd eq "show") {
    if($num_args != 2) {
      print_usage();
      $ret = 1;
    } else {
      $ret = show($ctx, $ARGV[1])
    }
  }
  elsif($cmd eq "remove") {
    if($num_args != 2) {
      print_usage();
      $ret = 1;
    } else {
      $ret = remove($ctx, $ARGV[1]);
    }
  }
  elsif($cmd eq "add") {
    if($num_args != 3) {
      print_usage();
      $ret = 1;
    } else {
      $ret = add($ctx, $ARGV[1], $ARGV[2]);
    }
  }
  elsif($cmd eq "edit") {
    if($num_args != 3) {
      print_usage();
      $ret = 1;
    } else {
      $ret = edit($ctx, $ARGV[1], $ARGV[2]);
    }
  }
  else {
    print_usage();
    $ret = 1;
  }
  RHRD::rddb::destroy($ctx);
} else {
  print STDERR "$errorstring\n";
  $ret = 1;
}

exit $ret;