#! /usr/bin/perl
################################################################################
## taskwarrior - a command line task list manager.
##
## Copyright 2006-2014, Paul Beckingham, Federico Hernandez.
##
## Permission is hereby granted, free of charge, to any person obtaining a copy
## of this software and associated documentation files (the "Software"), to deal
## in the Software without restriction, including without limitation the rights
## to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
## copies of the Software, and to permit persons to whom the Software is
## furnished to do so, subject to the following conditions:
##
## The above copyright notice and this permission notice shall be included
## in all copies or substantial portions of the Software.
##
## THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
## OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
## FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
## THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
## LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
## OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
## SOFTWARE.
##
## http://www.opensource.org/licenses/mit-license.php
##
################################################################################

use strict;
use warnings;

# Give a nice error if the (non-standard) JSON module is not installed.
eval "use JSON";
if ($@)
{
  print "Error: You need to install the JSON Perl module.\n";
  exit 1;
}

# Use the taskwarrior 2.0+ export command to filter and return JSON
my $command = join (' ', ("env PATH=$ENV{PATH} task rc.verbose=nothing rc.json.array=no export", @ARGV));
if ($command =~ /No matches/)
{
  printf STDERR $command;
  exit 1;
}

# Generate output.
print "'uuid','status','tags','entry','start','due','recur','end','project',",
      "'priority','fg','bg','description'\n";

for my $task (split /,$/ms, qx{$command})
{
  my $data = from_json ($task);

  my $desc = $data->{'description'};
  $desc =~ s/'/\\'/g;

  print "'$data->{'uuid'}',",
        "'$data->{'status'}',",
        "'", (exists $data->{'tags'} ? join (' ', @{$data->{'tags'}}) : ''), "',",
        "'$data->{'entry'}',",
        "'", ($data->{'start'}    || ''), "',",
        "'", ($data->{'due'}      || ''), "',",
        "'", ($data->{'recur'}    || ''), "',",
        "'", ($data->{'end'}      || ''), "',",
        "'", ($data->{'project'}  || ''), "',",
        "'", ($data->{'priority'} || ''), "',",
        "'", ($data->{'fg'}       || ''), "',",
        "'", ($data->{'bg'}       || ''), "',",
        "'$desc'",
        "\n";

  # Note that this format ignores:
  #   wait
  #   until
  #   annotations
  #   mask
  #   imask
  #   UDAs
}

exit 0;

################################################################################

