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 = 10; // 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         console.log('rfid_count', rfid_count);
  57
  58         $.cookie('rfid', 'localhost'); // set cookie
  59
  60         console.debug( 'rfid_scan', data, textStatus, $.cookie('rfid') );
  61         rfid_current_sid = false;
  62         rfid_blank_sid = false;
  63
  64         var span = $('span#rfid');
  65
  66         if ( span.size() == 0 ) {
  67                 // insert last in language bar on bottom
  68 //              span = $('ul#i18nMenu').append('<li><span id=rfid>RFID reader found<span>');
  69
  70                 // alternative pop-up version
  71                 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: 1040;"><label for="rfid_active"><input type=checkbox id="rfid_active"> local_ip <span id="rfid">RFID reader</span></label></div>');
  72                 if ( rfid_count ) $('input#rfid_active').attr('checked',true);
  73                 $('input#rfid_active').click(activate_scan_tags);
  74         }
  75
  76
  77         if ( span.size() == 0 ) // or before login on top
  78                 span = $('div#login').prepend('<span id=rfid>RFID reader found</span>');
  79
  80         span = $('span#rfid');
  81
  82
  83         if ( data.tags ) {
  84                 if ( data.tags.length === 1 ) {
  85                         var t = data.tags[0];
  86                         rfid_current_sid = t.sid;
  87
  88 //                      if ( span.text() != t.content ) {
  89                         if ( 1 ) { // force update of security
  90
  91                                 var script_name = document.location.pathname.split(/\//).pop();
  92 //                              var tab_active  = $("#header_search .ui-tabs-panel:not(.ui-tabs-hide)").prop('id');
  93                                 var tab_active  = $("#header_search li[aria-selected=true]").attr('aria-controls');
  94                                 console.debug('tab_active', tab_active);
  95                                 var circulation = script_name == 'circulation.pl' || tab_active == 'circ_search' ;
  96                                 var returns     = script_name == 'returns.pl' || tab_active == 'checkin_search';
  97                                 console.debug('script_name', script_name, 'circulation', circulation, 'returns', returns);
  98
  99                                 if ( t.content.length == 0 || t.content == 'UUUUUUUUUUUUUUUU' ) { // blank tag (3M is UUU....)
 100
 101                                         rfid_blank_sid = t.sid;
 102                                         span.text( t.sid + ' blank' ).css('color', 'red' );
 103
 104                                 } else if ( t.content.substr(0,3) == '130' && t.reader == '3M810' ) { // books on 3M reader
 105
 106                                         var color = 'blue';
 107                                         var icon  = '?';
 108                                         if ( t.security.toUpperCase() == 'DA' ) { color = 'red'; icon = '&timesb;' }
 109                                         if ( t.security.toUpperCase() == 'D7' ) { color = 'green'; icon = '&rarr;' }
 110                                         span.html( t.content + '&nbsp;' + icon ).css('color', color);
 111
 112
 113                                         if ( tab_active == 'catalog_search' && script_name != 'moredetail.pl' && $('input#rfid_active').attr('checked') ) {
 114                                                 if ( $('span.term:contains(bc:'+t.content+')').length == 0 ) {
 115                                                         $.cookie('rfid_count', rfid_count_timeout);
 116                                                         $('input[name=q]').val( 'bc:' + t.content ).closest('form').submit();
 117                                                 }
 118                                         }
 119
 120                                         if ( ! barcode_on_screen( t.content ) || returns ) {
 121                                                 rfid_reset_field = 'barcode';
 122
 123                                                 // return must be first to catch change of tab to check-in
 124                                                 var afi_secure    = returns ? 'DA' : 'D7';
 125                                                 var form_selector = returns ? 'first' : 'last';
 126                                                 if ( returns || circulation ) {
 127
 128                                                         if ( circulation && $('#circ_needsconfirmation').length > 0 ) {
 129                                                                 console.log("in circulation, but needs confirmation");
 130                                                         } else {
 131                                                                         var i = $('input[name=barcode]:'+form_selector);
 132                                                                         if ( i.val() != t.content )  {
 133                                                                                 rfid_secure_json( t, afi_secure, function(data) {
 134                                                                                         console.log('secure', afi_secure, data);
 135                                                                                         $.cookie('rfid_count', rfid_count_timeout);
 136                                                                                         i.val( t.content ).closest('form').submit();
 137                                                                                 });
 138                                                                         }
 139                                                         }
 140                                                 } else {
 141                                                         console.error('not in circulation or returns');
 142                                                 }
 143                                         }
 144
 145                                 } else if ( t.content.substr(0,3) == '130' ) {
 146
 147                                         span.text( 'Please put book on 3M reader!' ).css( 'color', 'red' );
 148
 149                                 } else {
 150                                         span.html( t.content + '&nbsp;&sstarf;' ).css('color', 'blue' );
 151
 152                                         if ( $('.patroninfo:contains('+t.content+')').length == 1 ) {
 153                                                 console.debug('not submitting', t.contains);
 154                                         } else {
 155                                                 rfid_refresh = 0; // stop rfid scan while submitting form
 156                                                 rfid_reset_field = 'findborrower';
 157                                                 $('input[name=findborrower]').val( t.content )
 158                                                         .parent().submit();
 159                                         }
 160                                 }
 161                         }
 162                 } else {
 163                         var error = data.tags.length + ' tags near reader: ';
 164                         $.each( data.tags, function(i,tag) { error += tag.content + ' '; } );
 165                         span.text( error ).css( 'color', 'red' );
 166                 }
 167
 168         } else {
 169                 span.text( 'no tags in range' ).css('color','gray');
 170                 if ( rfid_reset_field ) {
 171                         $('input[name='+rfid_reset_field+']').val( '' );
 172                         rfid_reset_field = false;
 173                 }
 174         }
 175
 176
 177         if (rfid_count > 0) rfid_count--;
 178         if (rfid_count == 0) {
 179                 span.text('RFID reader disabled').css('color','black');
 180                 $('input#rfid_active').attr('checked', false)
 181         }
 182         $.cookie('rfid_count', rfid_count);
 183
 184
 185         if (rfid_refresh > 1 && $('input#rfid_active').attr('checked') ) {
 186                 window.setTimeout( function() {
 187                         $('#rfid_popup').css('border','3px solid #ff0');
 188                         $.getJSON("///localhost:9000/scan?callback=?", rfid_scan);
 189                 }, rfid_refresh );
 190         } else {
 191                 console.debug('rfid_refresh disabled',rfid_refresh);
 192         }
 193
 194         $('#rfid_popup').css('border','3px solid #fff');
 195 }
 196
 197 function scan_tags() {
 198         console.info('scan_tags');
 199         $.getJSON("///localhost:9000/scan?callback=?", rfid_scan);
 200 }
 201
 202 function set_rfid_active(active) {
 203         var input_active = $('input#rfid_active').attr('checked');
 204         console.info('set_rfid_active', active);
 205         if ( active ) {
 206                 $.cookie('rfid_count', rfid_count_timeout);
 207                 scan_tags();
 208                 if ( ! input_active ) $('input#rfid_active').attr('checked', true);
 209         } else {
 210                 if ( input_active ) $('input#rfid_active').attr('checked', false);
 211                 $.cookie('rfid_count', 0);
 212         }
 213 }
 214
 215 function activate_scan_tags() {
 216         var active = $('input#rfid_active').attr('checked');
 217         console.info('activate_scan_tags', active);
 218         set_rfid_active(active);
 219 }
 220
 221 $(document).ready( function() {
 222         console.log('rfid_active', $('input#rfid_active').attr('checked') );
 223
 224         scan_tags();
 225
 226         // circulation keyboard shortcuts (FFZG specific!)
 227         shortcut.add('Alt+r', function() { set_rfid_active(true); } );
 228         shortcut.add('Alt+z', function() { set_rfid_active(true); } );
 229         shortcut.add('Alt+k', function() { set_rfid_active(false) } );
 230         shortcut.add('Alt+y', function() { set_rfid_active(true); } ); // renew
 231
 232         // intranet cataloging
 233         shortcut.add('F4', function() {
 234                 // extract barcode from window title
 235                 var barcode = document.title.split(/\(barcode\s+#|\)/)[1];
 236                 if ( barcode ) {
 237                         if ( ! rfid_blank_sid && rfid_current_sid && confirm('Reprogram this tag to barcode '+barcode) ) {
 238                                 rfid_blank_sid = rfid_current_sid;
 239                         }
 240
 241                         console.debug('program barcode', barcode, 'to', rfid_blank_sid);
 242                         $.getJSON( '///localhost:9000/program?' + rfid_blank_sid + '=' + barcode + ';callback=?', function(data) {
 243                                 console.info('programmed', rfid_blank_sid, barcode, data);
 244                         });
 245                 } else {
 246                         console.error('no barcode in window title');
 247                 }
 248         });
 249
 250 });