1 | package BookmarkController; |
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2 | use Moose; |
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3 | |
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4 | use Encode; |
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5 | use HTTP::Date qw{time2isoz time2iso time2str str2time}; |
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6 | use JSON; |
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7 | use Bookmarks; |
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8 | use URI; |
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9 | use Template; |
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10 | |
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11 | has bookmarks => ( |
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12 | is => 'rw', |
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13 | handles => [qw{get_bookmark}], |
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14 | ); |
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15 | has base_uri => ( |
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16 | is => 'ro', |
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17 | builder => '_build_base_uri', |
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18 | lazy => 1, |
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19 | ); |
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20 | has request => ( |
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21 | is => 'ro', |
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22 | ); |
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23 | |
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24 | sub _build_base_uri { |
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25 | my $self = shift; |
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26 | my $url = $self->request->base; |
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27 | |
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28 | $url .= '/' unless $url =~ m{/$}; |
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29 | return URI->new($url); |
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30 | } |
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31 | |
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32 | sub _get_list_links { |
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33 | my $self = shift; |
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34 | my ($self_type, $query) = @_; |
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35 | my @links = ( |
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36 | { |
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37 | text => 'JSON', |
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38 | type => 'application/json', |
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39 | query => { |
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40 | %$query, |
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41 | format => 'json', |
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42 | }, |
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43 | }, |
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44 | { |
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45 | text => 'XBEL', |
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46 | type => 'application/xml', |
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47 | query => { |
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48 | %$query, |
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49 | format => 'xbel', |
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50 | }, |
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51 | }, |
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52 | { |
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53 | text => 'Atom', |
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54 | type => 'application/atom+xml', |
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55 | path => 'feed', |
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56 | query => { |
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57 | %$query, |
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58 | }, |
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59 | }, |
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60 | { |
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61 | text => 'CSV', |
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62 | type => 'text/csv', |
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63 | query => { |
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64 | %$query, |
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65 | format => 'csv', |
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66 | }, |
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67 | }, |
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68 | { |
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69 | text => 'URI List', |
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70 | type => 'text/uri-list', |
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71 | query => { |
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72 | %$query, |
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73 | format => 'text', |
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74 | }, |
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75 | }, |
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76 | { |
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77 | text => 'HTML', |
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78 | type => 'text/html', |
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79 | query => { |
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80 | %$query, |
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81 | }, |
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82 | }, |
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83 | ); |
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84 | |
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85 | for my $link (@links) { |
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86 | $link->{rel} = $link->{type} eq $self_type ? 'self' : 'alternate'; |
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87 | $link->{href} = URI->new_abs($link->{path} || '', $self->base_uri); |
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88 | $link->{href}->query_form($link->{query}); |
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89 | } |
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90 | |
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91 | return @links; |
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92 | } |
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93 | |
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94 | sub find_or_new { |
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95 | my $self = shift; |
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96 | |
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97 | my $bookmark = $self->bookmarks->get_bookmark({ uri => $self->request->param('uri') }); |
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98 | if ($bookmark) { |
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99 | # redirect to the view of the existing bookmark |
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100 | return [301, [Location => $bookmark->bookmark_uri], []]; |
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101 | } else { |
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102 | # bookmark was not found; show the form to create a new bookmark |
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103 | my $template = Template->new; |
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104 | $template->process( |
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105 | 'bookmark.tt', |
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106 | { |
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107 | uri => $self->request->param('uri'), |
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108 | title => $self->request->param('title') || '', |
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109 | }, |
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110 | \my $output, |
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111 | ); |
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112 | return [404, ['Content-Type' => 'text/html; charset=UTF-8'], [$output]]; |
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113 | } |
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114 | } |
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115 | |
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116 | sub list { |
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117 | my $self = shift; |
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118 | |
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119 | # list all the bookmarks |
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120 | my $mtime = $self->bookmarks->get_last_modified_time; |
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121 | |
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122 | my $format = $self->request->param('format') || 'html'; |
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123 | |
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124 | my @tags = grep { $_ ne '' } $self->request->param('tag'); |
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125 | my $query = $self->request->param('q'); |
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126 | my $limit = $self->request->param('limit'); |
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127 | my $offset = $self->request->param('offset'); |
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128 | my @resources = $self->bookmarks->get_bookmarks({ |
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129 | query => $query, |
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130 | tag => \@tags, |
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131 | limit => $limit, |
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132 | offset => $offset, |
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133 | }); |
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134 | my @all_tags = $self->bookmarks->get_tags({ selected => $tags[0] }); |
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135 | my @cotags = $self->bookmarks->get_cotags({ |
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136 | query => $query, |
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137 | tag => \@tags, |
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138 | }); |
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139 | |
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140 | my $title = 'Bookmarks' . (@tags ? " tagged as " . join(' & ', @tags) : '') . ($query ? " matching '$query'" : ''); |
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141 | |
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142 | if ($format eq 'json') { |
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143 | my $json = decode_utf8( |
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144 | JSON->new->utf8->convert_blessed->encode({ |
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145 | bookmarks => \@resources, |
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146 | }) |
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147 | ); |
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148 | return [200, ['Content-Type' => 'application/json; charset=UTF-8'], [$json]]; |
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149 | } elsif ($format eq 'xbel') { |
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150 | require XML::XBEL; |
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151 | #TODO: conditional support; if XML::XBEL is not present, return a 5xx response |
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152 | |
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153 | my $xbel = XML::XBEL->new; |
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154 | |
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155 | $xbel->new_document({ |
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156 | title => $title, |
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157 | }); |
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158 | |
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159 | for my $bookmark (@resources) { |
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160 | my $cdatetime = time2isoz $bookmark->ctime; |
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161 | my $mdatetime = time2isoz $bookmark->mtime; |
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162 | # make the timestamps W3C-correct |
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163 | s/ /T/ foreach ($cdatetime, $mdatetime); |
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164 | |
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165 | $xbel->add_bookmark({ |
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166 | href => $bookmark->uri, |
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167 | title => $bookmark->title, |
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168 | desc => 'Tags: ' . join(', ', @{ $bookmark->tags }), |
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169 | added => $cdatetime, |
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170 | #XXX: are we sure that modified is the mtime of the bookmark or the resource? |
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171 | modified => $mdatetime, |
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172 | }); |
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173 | } |
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174 | |
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175 | return [200, ['Content-Type' => 'application/xml; charset=UTF-8'], [$xbel->toString]]; |
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176 | } elsif ($format eq 'text') { |
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177 | my $text = join '', |
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178 | map { |
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179 | sprintf "# %s\n# Tags: %s\n%s\n", |
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180 | $_->title, |
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181 | join(', ', @{ $_->tags }), |
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182 | $_->uri |
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183 | } @resources; |
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184 | return [200, ['Content-Type' => 'text/uri-list; charset=UTF-8'], [$text]]; |
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185 | } elsif ($format eq 'csv') { |
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186 | require Text::CSV::Encoded; |
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187 | my $csv = Text::CSV::Encoded->new({ encoding_out => 'utf8' }); |
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188 | my $text = qq{id,uri,title,tags,ctime,mtime\n}; |
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189 | for my $bookmark (@resources) { |
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190 | my $success = $csv->combine( |
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191 | $bookmark->id, |
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192 | $bookmark->uri, |
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193 | $bookmark->title, |
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194 | join(' ', @{ $bookmark->tags }), |
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195 | $bookmark->ctime, |
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196 | $bookmark->mtime, |
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197 | ); |
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198 | $text .= $csv->string . "\n" if $success; |
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199 | } |
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200 | |
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201 | # include the local timestamp in the attchment filename |
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202 | my $dt = time2iso; |
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203 | $dt =~ s/[^\d]//g; |
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204 | |
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205 | my $filename = sprintf( |
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206 | 'bookmarks-%s-%s.csv', |
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207 | join('_', @tags), |
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208 | $dt, |
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209 | ); |
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210 | |
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211 | return [200, ['Content-Type' => 'text/csv; charset=UTF-8', 'Content-Disposition' => sprintf('attachement; filename="%s"', $filename)], [$text]]; |
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212 | } else { |
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213 | my $template = Template->new; |
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214 | |
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215 | $template->process( |
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216 | 'list.tt', |
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217 | { |
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218 | base_url => $self->base_uri, |
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219 | title => $title, |
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220 | query => $query, |
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221 | selected_tag => $tags[0], |
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222 | search_tags => \@tags, |
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223 | links => [ $self->_get_list_links('text/html', { q => $query, tag => \@tags }) ], |
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224 | all_tags => \@all_tags, |
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225 | cotags => \@cotags, |
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226 | resources => \@resources, |
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227 | }, |
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228 | \my $output, |
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229 | ); |
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230 | return [200, ['Content-Type' => 'text/html; charset=UTF-8'], [$output]]; |
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231 | } |
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232 | } |
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233 | |
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234 | sub feed { |
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235 | my $self = shift; |
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236 | |
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237 | my $query = $self->request->param('q'); |
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238 | my @tags = grep { $_ ne '' } $self->request->param('tag'); |
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239 | my $title = 'Bookmarks' . (@tags ? " tagged as " . join(' & ', @tags) : ''); |
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240 | |
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241 | require XML::Atom; |
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242 | $XML::Atom::DefaultVersion = "1.0"; |
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243 | |
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244 | require XML::Atom::Feed; |
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245 | require XML::Atom::Entry; |
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246 | require XML::Atom::Link; |
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247 | require XML::Atom::Category; |
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248 | |
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249 | my $feed = XML::Atom::Feed->new; |
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250 | $feed->title($title); |
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251 | |
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252 | my $feed_uri = URI->new_abs('feed', $self->base_uri); |
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253 | $feed_uri->query_form(tag => \@tags); |
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254 | $feed->id($feed_uri->canonical); |
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255 | |
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256 | for my $link ($self->_get_list_links('application/atom+xml', { q => $query, tag => \@tags })) { |
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257 | my $atom_link = XML::Atom::Link->new; |
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258 | $atom_link->type($link->{type}); |
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259 | $atom_link->rel($link->{rel}); |
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260 | $atom_link->href($link->{href}->canonical); |
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261 | $feed->add_link($atom_link); |
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262 | } |
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263 | |
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264 | # construct a feed from the most recent 12 bookmarks |
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265 | for my $bookmark ($self->bookmarks->get_bookmarks({ query => $query, tag => \@tags, limit => 12 })) { |
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266 | my $entry = XML::Atom::Entry->new; |
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267 | $entry->id($bookmark->bookmark_uri->canonical); |
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268 | $entry->title($bookmark->title); |
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269 | |
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270 | my $link = XML::Atom::Link->new; |
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271 | $link->href($bookmark->uri); |
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272 | $entry->add_link($link); |
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273 | |
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274 | $entry->summary('Tags: ' . join(', ', @{ $bookmark->tags })); |
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275 | |
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276 | my $cdatetime = time2isoz $bookmark->ctime; |
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277 | my $mdatetime = time2isoz $bookmark->mtime; |
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278 | # make the timestamp W3C-correct |
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279 | s/ /T/ foreach ($cdatetime, $mdatetime); |
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280 | $entry->published($cdatetime); |
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281 | $entry->updated($mdatetime); |
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282 | |
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283 | for my $tag (@{ $bookmark->tags }) { |
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284 | my $category = XML::Atom::Category->new; |
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285 | $category->term($tag); |
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286 | $entry->add_category($category); |
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287 | } |
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288 | |
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289 | $feed->add_entry($entry); |
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290 | } |
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291 | |
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292 | return [200, ['Content-Type' => 'application/atom+xml; charset=UTF-8'], [$feed->as_xml]]; |
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293 | } |
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294 | |
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295 | sub view { |
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296 | my ($self, $id) = @_; |
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297 | |
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298 | my $format = $self->request->param('format') || 'html'; |
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299 | |
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300 | my $bookmark = $self->get_bookmark({ id => $id }); |
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301 | if ($bookmark) { |
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302 | # check If-Modified-Since header to return cache response |
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303 | if ($self->request->env->{HTTP_IF_MODIFIED_SINCE}) { |
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304 | my $cache_time = str2time($self->request->env->{HTTP_IF_MODIFIED_SINCE}); |
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305 | if ($bookmark->mtime <= $cache_time) { |
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306 | return [304, [], []]; |
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307 | } |
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308 | } |
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309 | my $last_modified = time2str($bookmark->mtime); |
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310 | |
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311 | if ($format eq 'json') { |
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312 | my $json = decode_utf8(JSON->new->utf8->convert_blessed->encode($bookmark)); |
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313 | return [200, ['Content-Type' => 'application/json; charset=UTF-8', 'Last-Modified' => $last_modified], [$json]]; |
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314 | } else { |
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315 | # display the bookmark form for this bookmark |
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316 | $bookmark->{exists} = 1; |
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317 | $bookmark->{created} = "Created " . localtime($bookmark->ctime); |
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318 | $bookmark->{created} .= '; Updated ' . localtime($bookmark->mtime) unless $bookmark->ctime == $bookmark->mtime; |
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319 | my $template = Template->new; |
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320 | $template->process( |
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321 | 'bookmark.tt', |
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322 | $bookmark, |
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323 | \my $output, |
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324 | ); |
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325 | return [200, ['Content-Type' => 'text/html; charset=UTF-8', 'Last-Modified' => $last_modified], [$output]]; |
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326 | } |
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327 | } else { |
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328 | return [404, ['Content-Type' => 'text/plain; charset=UTF-8'], ["Boomark $id not found"]]; |
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329 | } |
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330 | } |
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331 | |
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332 | sub view_field { |
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333 | my ($self, $id, $field) = @_; |
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334 | |
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335 | my $bookmark = $self->bookmarks->get_bookmark({ id => $id }); |
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336 | if ($bookmark) { |
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337 | # respond with just the requested field as plain text |
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338 | my $value = eval { $bookmark->$field }; |
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339 | if ($@) { |
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340 | if ($@ =~ /Can't locate object method/) { |
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341 | return [404, ['Content-Type' => 'text/plain; charset=UTF-8'], [qq{"$field" is not a valid bookmark data field}]]; |
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342 | } else { |
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343 | die $@; |
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344 | } |
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345 | } |
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346 | return [200, ['Content-Type' => 'text/plain; charset=UTF-8'], [ref $value eq 'ARRAY' ? join(' ', @{ $value }) : $value]]; |
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347 | } else { |
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348 | return [404, ['Content-Type' => 'text/plain; charset=UTF-8'], ["Boomark $id not found"]]; |
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349 | } |
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350 | } |
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351 | |
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352 | sub create { |
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353 | my $self = shift; |
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354 | |
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355 | my $uri = $self->request->param('uri'); |
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356 | my $title = $self->request->param('title'); |
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357 | my @tags = split ' ', $self->request->param('tags'); |
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358 | |
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359 | my $bookmark = $self->bookmarks->add({ |
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360 | uri => $uri, |
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361 | title => $title, |
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362 | tags => \@tags, |
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363 | }); |
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364 | |
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365 | #TODO: not RESTful; the proper RESTful response would be a 201 |
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366 | return [303, ['Location' => $bookmark->bookmark_uri->canonical], []]; |
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367 | } |
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368 | |
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369 | sub edit { |
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370 | my $self = shift; |
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371 | my $id = shift; |
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372 | |
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373 | my $bookmark = $self->bookmarks->get_bookmark({ id => $id }); |
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374 | if ($bookmark) { |
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375 | # update the URI, title, and tags |
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376 | $bookmark->uri($self->request->param('uri')); |
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377 | $bookmark->title($self->request->param('title')); |
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378 | $bookmark->tags([ split ' ', $self->request->param('tags') || '' ]); |
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379 | |
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380 | # write to the database |
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381 | $self->bookmarks->update($bookmark); |
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382 | |
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383 | #TODO: not RESTful; proper response would be a 200 |
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384 | return [303, ['Location' => $bookmark->bookmark_uri->canonical], []]; |
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385 | } else { |
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386 | return [404, ['Content-Type' => 'text/plain; charset=UTF-8'], ["Boomark $id not found"]]; |
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387 | } |
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388 | } |
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389 | |
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390 | 1; |
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