#!/usr/bin/env perl

use strict;
use warnings;

use 5.10.0;

use File::HomeDir;
use JSON;
use Data::Dumper;
use Time::Piece;
use Carp;


if ($ARGV[0] eq 'tags') {
  print tags();
} else {
  my $ISO_8601_FMT = '%Y-%m-%d';
  print recent(Time::Piece->strptime('2020-03-02', $ISO_8601_FMT));
}

sub tags {
  # See the bit about auth here:
  # https://pinboard.in/api/
  my $home = File::HomeDir->my_home;
  my $token = file_get_contents("${home}/.pinboardrc");
  chomp($token);

  my $url = 'https://api.pinboard.in/v1/tags/get?format=json&auth_token=' . $token;

  my $pinboard_json = `curl -s '${url}'`;
  my $JSON = JSON->new->utf8->pretty;
  my $pinboard_hashref = $JSON->decode($pinboard_json);
  my %tags = %{ $pinboard_hashref };
  my $output = '';
  foreach my $tag (keys %tags) {
    $output .= "$tag\n";
  }
  return $output;
  # 
  #  my @output;
  #  foreach my $tag (@tags)
  #  {
  #    push @output, Dumper($tag);
  #  }
  # 
  #  if (@output > 0) {
  #    return join "\n", @output;
  #  }
  #  return;
}

sub recent {
  my ($day) = @_;

  # See the bit about auth here:
  # https://pinboard.in/api/
  my $home = File::HomeDir->my_home;
  my $token = file_get_contents("${home}/.pinboardrc");
  chomp($token);

  my $url = $day->strftime(
    'https://api.pinboard.in/v1/posts/get?dt=%Y-%m-%d&meta=yes&format=json&auth_token='
    . $token
  );

  my $pinboard_json = `curl -s '${url}'`;
  my $JSON = JSON->new->utf8->pretty;
  my $pinboard_hashref = $JSON->decode($pinboard_json);
  my @posts = @{ $pinboard_hashref->{posts} };

  my @output;
  foreach my $post (@posts)
  {
    push @output, Dumper($post);
  }

  if (@output > 0) {
    return join "\n", @output;
  }
  return;
}

# PHP-style file-content grabbing:
sub file_get_contents {
  my ($file) = @_;

  open my $fh, '<', $file
    or croak "Couldn't open $file: $!\n";

  my $contents;
  {
    # line separator:
    local $/ = undef;
    $contents = <$fh>;
  }

  close $fh or croak "Couldn't close $file: $!";

  return $contents;
}