ffzg/rfid/koha-rfid.js

   1 /*
   2  * RFID support for Koha
   3  *
   4  * Writtern by Dobrica Pavlinusic <dpavlin@rot13.org> under GPL v2 or later
   5  *
   6  * This provides example how to intergrate JSONP interface from
   7  *
   8  * scripts/RFID-JSONP-server.pl
   9  *
  10  * to provide overlay for tags in range and emulate form fill for Koha Library System
  11  * which allows check-in and checkout-operations without touching html interface
  12  *
  13  * You will have to inject remote javascript in Koha intranetuserjs using:
  14
  15 // inject JavaScript RFID support
  16 $.getScript('http://localhost:9000/examples/koha-rfid.js');
  17
  18  */
  19
  20 function barcode_on_screen(barcode) {
  21         var found = 0;
  22         $('table tr td a:contains(130)').each( function(i,o) {
  23                 var possible = $(o).text();
  24                 if ( possible == barcode ) found++;
  25         })
  26         return found;
  27 }
  28
  29 var rfid_refresh = 1500; // ms
  30 var rfid_count_timeout = 90; // number of times to scan reader before turning off
  31
  32 function rfid_secure_json(t,val, success) {
  33         if ( t.security.toUpperCase() == val.toUpperCase() ) return;
  34         rfid_refresh = 0; // disable rfid pull until secure call returns
  35         console.log('rfid_secure_json', t, val);
  36         $.getJSON( '///localhost:9000/secure.js?' + t.sid + '=' + val + ';callback=?', success );
  37 }
  38
  39 function rfid_secure_check(t,val) {
  40         if ( barcode_on_screen(t.content) ) {
  41                 rfid_secure_json(t, val);
  42         }
  43 }
  44
  45
  46 var rfid_reset_field = false;
  47 var rfid_current_sid = false;
  48 var rfid_blank_sid   = false;
  49
  50 function rfid_scan(data,textStatus) {
  51
  52         var rfid_count = $.cookie('rfid_count');
  53         if ( rfid_count === undefined ) {
  54                 rfid_count = rfid_count_timeout;
  55         }
  56
  57         $.cookie('rfid', 'localhost'); // set cookie
  58
  59         console.debug( 'rfid_scan', data, textStatus, $.cookie('rfid') );
  60         rfid_current_sid = false;
  61         rfid_blank_sid = false;
  62
  63         var span = $('span#rfid');
  64
  65         if ( span.size() == 0 ) {
  66                 // insert last in language bar on bottom
  67 //              span = $('ul#i18nMenu').append('<li><span id=rfid>RFID reader found<span>');
  68
  69                 // alternative pop-up version
  70                 span = $('#breadcrumbs').append('<div id="rfid_popup" style="position: fixed; bottom: 3em; right: 1em; background: #fff; border: 3px solid #ff0; padding: 1em; opacity: 0.7; z-index: 10;"><label for="rfid_active"><input type=checkbox id="rfid_active"> local_ip <span id="rfid">RFID reader</span></label></div>');
  71                 if ( rfid_count ) $('input#rfid_active').attr('checked',true);
  72                 $('input#rfid_active').click(scan_tags);
  73         }
  74
  75
  76         if ( span.size() == 0 ) // or before login on top
  77                 span = $('div#login').prepend('<span id=rfid>RFID reader found</span>');
  78
  79         span = $('span#rfid');
  80
  81
  82         if ( data.tags ) {
  83                 if ( data.tags.length === 1 ) {
  84                         var t = data.tags[0];
  85                         rfid_current_sid = t.sid;
  86
  87 //                      if ( span.text() != t.content ) {
  88                         if ( 1 ) { // force update of security
  89
  90                                 var script_name = document.location.pathname.split(/\//).pop();
  91 //                              var tab_active  = $("#header_search .ui-tabs-panel:not(.ui-tabs-hide)").prop('id');
  92                                 var tab_active  = $("#header_search li[aria-selected=true]").attr('aria-controls');
  93                                 console.debug('tab_active', tab_active);
  94                                 var circulation = script_name == 'circulation.pl' || tab_active == 'circ_search' ;
  95                                 var returns     = script_name == 'returns.pl' || tab_active == 'checkin_search';
  96                                 console.debug('script_name', script_name, 'circulation', circulation, 'returns', returns);
  97
  98                                 if ( t.content.length == 0 || t.content == 'UUUUUUUUUUUUUUUU' ) { // blank tag (3M is UUU....)
  99
 100                                         rfid_blank_sid = t.sid;
 101                                         span.text( t.sid + ' blank' ).css('color', 'red' );
 102
 103                                 } else if ( t.content.substr(0,3) == '130' && t.reader == '3M810' ) { // books on 3M reader
 104
 105                                         var color = 'blue';
 106                                         var icon  = '?';
 107                                         if ( t.security.toUpperCase() == 'DA' ) { color = 'red'; icon = '&timesb;' }
 108                                         if ( t.security.toUpperCase() == 'D7' ) { color = 'green'; icon = '&rarr;' }
 109                                         span.html( t.content + '&nbsp;' + icon ).css('color', color);
 110
 111
 112                                         if ( tab_active == 'catalog_search' && script_name != 'moredetail.pl' && $('input#rfid_active').attr('checked') ) {
 113                                                 if ( $('span.term:contains(bc:'+t.content+')').length == 0 ) {
 114                                                         $('input[name=q]').val( 'bc:' + t.content ).closest('form').submit();
 115                                                 }
 116                                         }
 117
 118                                         if ( ! barcode_on_screen( t.content ) || returns ) {
 119                                                 rfid_reset_field = 'barcode';
 120
 121                                                 // return must be first to catch change of tab to check-in
 122                                                 var afi_secure    = returns ? 'DA' : 'D7';
 123                                                 var form_selector = returns ? 'first' : 'last';
 124                                                 if ( returns || circulation ) {
 125
 126                                                         if ( circulation && $('#circ_needsconfirmation').length > 0 ) {
 127                                                                 console.log("in circulation, but needs confirmation");
 128                                                         } else {
 129                                                                         var i = $('input[name=barcode]:'+form_selector);
 130                                                                         if ( i.val() != t.content )  {
 131                                                                                 rfid_secure_json( t, afi_secure, function(data) {
 132                                                                                         console.log('secure', afi_secure, data);
 133                                                                                         i.val( t.content ).closest('form').submit();
 134                                                                                 });
 135                                                                         }
 136                                                         }
 137                                                 } else {
 138                                                         console.error('not in circulation or returns');
 139                                                 }
 140                                         }
 141
 142                                 } else if ( t.content.substr(0,3) == '130' ) {
 143
 144                                         span.text( 'Please put book on 3M reader!' ).css( 'color', 'red' );
 145
 146                                 } else {
 147                                         span.html( t.content + '&nbsp;&sstarf;' ).css('color', 'blue' );
 148
 149                                         if ( $('.patroninfo:contains('+t.content+')').length == 1 ) {
 150                                                 console.debug('not submitting', t.contains);
 151                                         } else {
 152                                                 rfid_refresh = 0; // stop rfid scan while submitting form
 153                                                 rfid_reset_field = 'findborrower';
 154                                                 $('input[name=findborrower]').val( t.content )
 155                                                         .parent().submit();
 156                                         }
 157                                 }
 158                         }
 159                 } else {
 160                         var error = data.tags.length + ' tags near reader: ';
 161                         $.each( data.tags, function(i,tag) { error += tag.content + ' '; } );
 162                         span.text( error ).css( 'color', 'red' );
 163                 }
 164
 165         } else {
 166                 span.text( 'no tags in range' ).css('color','gray');
 167                 if ( rfid_reset_field ) {
 168                         $('input[name='+rfid_reset_field+']').val( '' );
 169                         rfid_reset_field = false;
 170                 }
 171         }
 172
 173         if (rfid_count > 0) {
 174                 rfid_count--;
 175                 span.text('RFID reader disabled').css('color','black');
 176                 $('input#rfid_active').attr('checked', false)
 177         } else {
 178                 rfid_count = 0;
 179         }
 180         $.cookie('rfid_count', rfid_count);
 181
 182         if (rfid_refresh > 1 && $('input#rfid_active').attr('checked') ) {
 183                 window.setTimeout( function() {
 184                         $('#rfid_popup').css('border','3px solid #ff0');
 185                         $.getJSON("///localhost:9000/scan?callback=?", rfid_scan);
 186                 }, rfid_refresh );
 187         } else {
 188                 console.debug('rfid_refresh disabled',rfid_refresh);
 189         }
 190
 191         $('#rfid_popup').css('border','3px solid #fff');
 192 }
 193
 194 function scan_tags() {
 195         console.info('scan_tags');
 196         $.getJSON("///localhost:9000/scan?callback=?", rfid_scan);
 197 }
 198
 199 function activate_scan_tags() {
 200         var active = $('input#rfid_active').attr('checked');
 201         if ( ! active ) {
 202                 $('input#rfid_active').attr('checked',true);
 203                 $.cookie('rfid_count', rfid_count_timeout);
 204                 scan_tags();
 205         }
 206 }
 207
 208 $(document).ready( function() {
 209         console.log('rfid_active', $('input#rfid_active').attr('checked') );
 210
 211         scan_tags();
 212
 213         // circulation keyboard shortcuts (FFZG specific!)
 214         shortcut.add('Alt+r', function() { activate_scan_tags(); } );
 215         shortcut.add('Alt+z', function() { activate_scan_tags(); } );
 216         shortcut.add('Alt+k', function() { $('input#rfid_active').attr('checked',false) } );
 217
 218         // intranet cataloging
 219         shortcut.add('F4', function() {
 220                 // extract barcode from window title
 221                 var barcode = document.title.split(/\(barcode\s+#|\)/)[1];
 222                 if ( barcode ) {
 223                         if ( ! rfid_blank_sid && rfid_current_sid && confirm('Reprogram this tag to barcode '+barcode) ) {
 224                                 rfid_blank_sid = rfid_current_sid;
 225                         }
 226
 227                         console.debug('program barcode', barcode, 'to', rfid_blank_sid);
 228                         $.getJSON( '///localhost:9000/program?' + rfid_blank_sid + '=' + barcode + ';callback=?', function(data) {
 229                                 console.info('programmed', rfid_blank_sid, barcode, data);
 230                         });
 231                 } else {
 232                         console.error('no barcode in window title');
 233                 }
 234         });
 235
 236 });