[5] | 1 | package BookmarkApp; |
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| 2 | use strict; |
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| 3 | use warnings; |
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| 4 | use base qw{CGI::Application}; |
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| 5 | |
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[6] | 6 | use CGI::Application::Plugin::TT; |
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| 7 | |
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[5] | 8 | use Encode; |
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[19] | 9 | use HTTP::Date qw{time2isoz}; |
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[5] | 10 | use JSON; |
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| 11 | use Bookmarks; |
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| 12 | |
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[7] | 13 | use URI; |
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| 14 | my $base_uri = URI->new; |
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| 15 | $base_uri->scheme('http'); |
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[17] | 16 | $base_uri->host($ENV{HTTP_X_FORWARDED_HOST} || $ENV{SERVER_NAME}); |
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[7] | 17 | $base_uri->port($ENV{SERVER_PORT}); |
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| 18 | $base_uri->path($ENV{SCRIPT_NAME} . '/'); |
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| 19 | |
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[15] | 20 | my $dbname = 'fk.db'; |
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[5] | 21 | my $bookmarks = Bookmarks->new({ |
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[15] | 22 | dbname => $dbname, |
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[24] | 23 | base_uri => $base_uri, |
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[5] | 24 | }); |
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| 25 | |
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| 26 | sub setup { |
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| 27 | my $self = shift; |
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| 28 | $self->mode_param(path_info => 1); |
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| 29 | $self->run_modes([qw{ |
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| 30 | list |
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[9] | 31 | feed |
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[5] | 32 | view |
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| 33 | edit |
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| 34 | }]); |
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| 35 | } |
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| 36 | |
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| 37 | sub list { |
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| 38 | my $self = shift; |
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| 39 | my $q = $self->query; |
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| 40 | |
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| 41 | # check for a uri param, and if there is one present, |
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| 42 | # see if a bookmark for that URI already exists |
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| 43 | if (defined(my $uri = $q->param('uri'))) { |
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| 44 | my $bookmark = $bookmarks->get_bookmark({ uri => $uri }); |
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| 45 | if ($bookmark) { |
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| 46 | # redirect to the view of the existing bookmark |
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| 47 | $self->header_type('redirect'); |
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| 48 | $self->header_props( |
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| 49 | -uri => $q->url . '/' . $bookmark->{id}, |
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| 50 | ); |
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| 51 | return; |
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| 52 | } else { |
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| 53 | # bookmark was not found; show the form to create a new bookmark |
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| 54 | $bookmark->{uri} = $uri; |
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| 55 | $bookmark->{title} = $q->param('title'); |
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| 56 | $self->header_props( |
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| 57 | -type => 'text/html', |
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| 58 | -charset => 'UTF-8', |
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| 59 | -status => 404, |
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| 60 | ); |
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[6] | 61 | return $self->tt_process( |
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[5] | 62 | 'bookmark.tt', |
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| 63 | $bookmark, |
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| 64 | ); |
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| 65 | } |
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| 66 | } |
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| 67 | |
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| 68 | # list all the bookmarks |
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| 69 | my $format = $q->param('format') || 'html'; |
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| 70 | my $tag = $q->param('tag'); |
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[20] | 71 | my @tags = $q->param('tag'); |
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| 72 | # special case: handle the empty tag |
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| 73 | if (@tags == 1 && $tags[0] eq '') { |
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| 74 | @tags = (); |
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| 75 | } |
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[13] | 76 | my $limit = $q->param('limit'); |
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| 77 | my $offset = $q->param('offset'); |
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[26] | 78 | my @resources = $bookmarks->get_bookmarks({ |
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[20] | 79 | tag => \@tags, |
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[13] | 80 | limit => $limit, |
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| 81 | offset => $offset, |
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| 82 | }); |
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[5] | 83 | my @all_tags = $bookmarks->get_tags({ selected => $tag }); |
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[20] | 84 | my @cotags = $bookmarks->get_cotags({ tag => \@tags }); |
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[5] | 85 | |
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| 86 | if ($format eq 'json') { |
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| 87 | $self->header_props( |
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| 88 | -type => 'application/json', |
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| 89 | -charset => 'UTF-8', |
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| 90 | ); |
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| 91 | return decode_utf8( |
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[25] | 92 | JSON->new->utf8->convert_blessed->encode({ |
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[7] | 93 | bookmarks => \@resources, |
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[5] | 94 | }) |
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| 95 | ); |
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[19] | 96 | } elsif ($format eq 'xbel') { |
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| 97 | require XML::XBEL; |
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| 98 | #TODO: conditional support; if XML::XBEL is not present, return a 5xx response |
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| 99 | |
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| 100 | my $xbel = XML::XBEL->new; |
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| 101 | |
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| 102 | $xbel->new_document({ |
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| 103 | title => 'Bookmarks' . ($tag ? " tagged as $tag" : ''), |
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| 104 | }); |
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| 105 | |
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| 106 | for my $bookmark (@resources) { |
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| 107 | my $cdatetime = time2isoz $bookmark->{ctime}; |
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| 108 | my $mdatetime = time2isoz $bookmark->{mtime}; |
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| 109 | # make the timestamps W3C-correct |
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| 110 | s/ /T/ foreach ($cdatetime, $mdatetime); |
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| 111 | |
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| 112 | $xbel->add_bookmark({ |
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| 113 | href => $bookmark->{uri}, |
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| 114 | title => $bookmark->{title}, |
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| 115 | desc => 'Tags: ' . join(', ', @{ $bookmark->{tags} }), |
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| 116 | added => $cdatetime, |
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| 117 | #XXX: are we sure that modified is the mtime of the bookmark or the resource? |
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| 118 | modified => $mdatetime, |
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| 119 | }); |
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| 120 | } |
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| 121 | |
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| 122 | $self->header_props( |
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| 123 | -type => 'application/xml', |
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| 124 | -charset => 'UTF-8', |
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| 125 | ); |
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| 126 | |
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| 127 | return $xbel->toString; |
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[5] | 128 | } else { |
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| 129 | $self->header_props( |
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| 130 | -type => 'text/html', |
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| 131 | -charset => 'UTF-8', |
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| 132 | ); |
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| 133 | |
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| 134 | # set the base URL, adding a trailing slash if needed |
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| 135 | my $base_url = $q->url; |
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| 136 | $base_url .= '/' if $base_url =~ m{/bookmarks$}; |
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| 137 | |
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[22] | 138 | my @links = ( |
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| 139 | { |
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| 140 | text => 'Link', |
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| 141 | type => 'text/html', |
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| 142 | rel => 'self', |
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| 143 | query => { |
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| 144 | tag => \@tags, |
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| 145 | }, |
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| 146 | }, |
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| 147 | { |
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| 148 | text => 'JSON', |
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| 149 | type => 'application/json', |
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| 150 | rel => 'alternate', |
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| 151 | query => { |
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| 152 | tag => \@tags, |
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| 153 | format => 'json', |
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| 154 | }, |
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| 155 | }, |
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| 156 | { |
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| 157 | text => 'XBEL', |
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| 158 | type => 'application/xml', |
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| 159 | rel => 'alternate', |
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| 160 | query => { |
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| 161 | tag => \@tags, |
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| 162 | format => 'xbel', |
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| 163 | }, |
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| 164 | }, |
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| 165 | { |
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| 166 | text => 'Atom', |
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| 167 | type => 'application/atom+xml', |
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| 168 | rel => 'alternate', |
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| 169 | path => 'feed', |
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| 170 | query => { |
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| 171 | tag => \@tags, |
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| 172 | }, |
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| 173 | }, |
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| 174 | ); |
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| 175 | for my $link (@links) { |
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| 176 | $link->{href} = URI->new_abs($link->{path} || '', $base_uri); |
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| 177 | $link->{href}->query_form($link->{query}); |
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| 178 | } |
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| 179 | |
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[6] | 180 | return $self->tt_process( |
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[5] | 181 | 'list.tt', |
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| 182 | { |
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| 183 | base_url => $base_url, |
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| 184 | selected_tag => $tag, |
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[20] | 185 | search_tags => \@tags, |
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[22] | 186 | links => \@links, |
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[20] | 187 | all_tags => \@all_tags, |
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[5] | 188 | cotags => \@cotags, |
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| 189 | resources => \@resources, |
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| 190 | }, |
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| 191 | ); |
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| 192 | } |
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| 193 | } |
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| 194 | |
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[9] | 195 | sub feed { |
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| 196 | my $self = shift; |
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| 197 | my $q = $self->query; |
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| 198 | |
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| 199 | my $tag = $q->param('tag'); |
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| 200 | |
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| 201 | require XML::Atom::Feed; |
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| 202 | require XML::Atom::Entry; |
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| 203 | require XML::Atom::Link; |
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| 204 | |
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| 205 | my $feed = XML::Atom::Feed->new; |
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[16] | 206 | $feed->title('Bookmarks' . ($tag ? " tagged as $tag" : '')); |
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[17] | 207 | $feed->id($base_uri->canonical . 'feed'); |
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[9] | 208 | |
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| 209 | # construct a feed from the most recent 12 bookmarks |
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[26] | 210 | for my $bookmark ($bookmarks->get_bookmarks({ tag => $tag, limit => 12 })) { |
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[9] | 211 | my $entry = XML::Atom::Entry->new; |
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| 212 | $entry->id($bookmark->{bookmark_uri}); |
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| 213 | $entry->title($bookmark->{title}); |
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| 214 | my $link = XML::Atom::Link->new; |
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| 215 | $link->href($bookmark->{uri}); |
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| 216 | $entry->add_link($link); |
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| 217 | $entry->summary('Tags: ' . join(', ', @{ $bookmark->{tags} })); |
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| 218 | $feed->add_entry($entry); |
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| 219 | } |
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| 220 | |
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| 221 | $self->header_props( |
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| 222 | -type => 'application/atom+xml', |
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| 223 | -charset => 'UTF-8', |
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| 224 | ); |
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| 225 | return $feed->as_xml; |
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| 226 | } |
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| 227 | |
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[5] | 228 | sub view { |
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| 229 | my $self = shift; |
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| 230 | my $id = $self->param('id'); |
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| 231 | my $field = $self->param('field'); |
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[7] | 232 | my $format = $self->query->param('format') || 'html'; |
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[5] | 233 | |
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| 234 | my $bookmark = $bookmarks->get_bookmark({ id => $id }); |
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| 235 | if ($bookmark) { |
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| 236 | if ($field) { |
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| 237 | # respond with just the requested field as plain text |
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[27] | 238 | my $value = eval { $bookmark->$field }; |
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| 239 | if ($@) { |
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| 240 | if ($@ =~ /Can't locate object method/) { |
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| 241 | $self->header_props( |
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| 242 | -type => 'text/plain', |
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| 243 | -charset => 'UTF-8', |
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| 244 | -status => 404, |
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| 245 | ); |
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| 246 | return qq{"$field" is not a valid bookmark data field}; |
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| 247 | } else { |
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| 248 | die $@; |
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| 249 | } |
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| 250 | } |
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[5] | 251 | $self->header_props( |
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| 252 | -type => 'text/plain', |
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| 253 | -charset => 'UTF-8', |
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| 254 | ); |
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| 255 | return ref $value eq 'ARRAY' ? join(',', @{ $value }) : $value; |
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| 256 | } else { |
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[7] | 257 | if ($format eq 'json') { |
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| 258 | $self->header_props( |
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| 259 | -type => 'application/json', |
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| 260 | -charset => 'UTF-8', |
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| 261 | ); |
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[27] | 262 | return decode_utf8(JSON->new->utf8->convert_blessed->encode($bookmark)); |
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[7] | 263 | } else { |
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| 264 | # display the bookmark form for this bookmark |
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| 265 | $bookmark->{exists} = 1; |
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[27] | 266 | $bookmark->{created} = "Created " . localtime($bookmark->ctime); |
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| 267 | $bookmark->{created} .= '; Updated ' . localtime($bookmark->mtime) unless $bookmark->ctime == $bookmark->mtime; |
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[7] | 268 | $self->header_props( |
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| 269 | -type => 'text/html', |
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| 270 | -charset => 'UTF-8', |
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| 271 | ); |
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| 272 | return $self->tt_process( |
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| 273 | 'bookmark.tt', |
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| 274 | $bookmark, |
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| 275 | ); |
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| 276 | } |
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[5] | 277 | } |
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| 278 | } else { |
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| 279 | $self->header_props( |
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| 280 | -type => 'text/html', |
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| 281 | -charset => 'UTF-8', |
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| 282 | -status => 404, |
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| 283 | ); |
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| 284 | return "Bookmark $id Not Found"; |
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| 285 | } |
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| 286 | } |
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| 287 | |
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| 288 | #TODO: split this into edit and create methods |
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| 289 | sub edit { |
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| 290 | my $self = shift; |
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| 291 | my $q = $self->query; |
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| 292 | #TODO: get the bookmark based on the id and edit it directly? |
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| 293 | #TODO: deal with changing URIs |
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| 294 | my $uri = $q->param('uri'); |
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| 295 | my $title = $q->param('title'); |
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| 296 | my @tags = split ' ', $q->param('tags'); |
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| 297 | $bookmarks->add({ |
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| 298 | uri => $uri, |
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| 299 | title => $title, |
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| 300 | tags => \@tags, |
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| 301 | }); |
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| 302 | |
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| 303 | =begin |
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| 304 | |
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| 305 | my $location = URI->new($q->url); |
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| 306 | $location->query_form(uri => $uri) if defined $q->url_param('uri'); |
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| 307 | $location->fragment('updated'); |
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| 308 | |
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| 309 | =cut |
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| 310 | |
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| 311 | # return to the form |
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| 312 | $self->header_type('redirect'); |
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| 313 | $self->header_props( |
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| 314 | -uri => $ENV{REQUEST_URI}, |
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| 315 | -status => 303, |
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| 316 | ); |
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| 317 | } |
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| 318 | |
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| 319 | 1; |
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