library/appointments.inc.php

   1 <?php
   2
   3  // Copyright (C) 2011 Ken Chapple
   4  //
   5  // This program is free software; you can redistribute it and/or
   6  // modify it under the terms of the GNU General Public License
   7  // as published by the Free Software Foundation; either version 2
   8  // of the License, or (at your option) any later version.
   9
  10  // Holds library functions (and hashes) used by the appointment reporting module
  11
  12 $COMPARE_FUNCTION_HASH = array(
  13         'doctor' => 'compareAppointmentsByDoctorName',
  14         'patient' => 'compareAppointmentsByPatientName',
  15         'pubpid' => 'compareAppointmentsByPatientId',
  16         'date' => 'compareAppointmentsByDate',
  17         'time' => 'compareAppointmentsByTime',
  18         'type' => 'compareAppointmentsByType',
  19         'comment' => 'compareAppointmentsByComment'
  20 );
  21
  22 $ORDERHASH = array(
  23         'doctor' => array( 'doctor', 'date', 'time' ),
  24         'patient' => array( 'patient', 'date', 'time' ),
  25         'pubpid' => array( 'pubpid', 'date', 'time' ),
  26         'date' => array( 'date', 'time', 'type', 'patient' ),
  27         'time' => array( 'time', 'date', 'patient' ),
  28         'type' => array( 'type', 'date', 'time', 'patient' ),
  29         'comment' => array( 'comment', 'date', 'time', 'patient' )
  30 );
  31
  32 function fetchEvents( $from_date, $to_date, $where_param = null, $orderby_param = null )
  33 {
  34         $where =
  35                 "( (e.pc_endDate >= '$from_date' AND e.pc_eventDate <= '$to_date' AND e.pc_recurrtype = '1') OR " .
  36                   "(e.pc_eventDate >= '$from_date' AND e.pc_eventDate <= '$to_date') )";
  37         if ( $where_param ) $where .= $where_param;
  38
  39         $order_by = "e.pc_eventDate, e.pc_startTime";
  40         if ( $orderby_param ) {
  41                 $order_by = $orderby_param;
  42         }
  43
  44         $query = "SELECT " .
  45         "e.pc_eventDate, e.pc_endDate, e.pc_startTime, e.pc_endTime, e.pc_duration, e.pc_recurrtype, e.pc_recurrspec, e.pc_recurrfreq, e.pc_catid, e.pc_eid, " .
  46         "e.pc_title, e.pc_hometext, " .
  47         "p.fname, p.mname, p.lname, p.pid, p.pubpid, " .
  48         "u.fname AS ufname, u.mname AS umname, u.lname AS ulname, u.id AS uprovider_id, " .
  49         "c.pc_catname, c.pc_catid " .
  50         "FROM openemr_postcalendar_events AS e " .
  51         "LEFT OUTER JOIN patient_data AS p ON p.pid = e.pc_pid " .
  52         "LEFT OUTER JOIN users AS u ON u.id = e.pc_aid " .
  53         "LEFT OUTER JOIN openemr_postcalendar_categories AS c ON c.pc_catid = e.pc_catid " .
  54         "WHERE $where " .
  55         "ORDER BY $order_by";
  56
  57         $res = sqlStatement( $query );
  58         $events = array();
  59         if ( $res )
  60         {
  61                 while ( $row = sqlFetchArray($res) )
  62                 {
  63                         // if it's a repeating appointment, fetch all occurances in date range
  64                         if ( $row['pc_recurrtype'] ) {
  65                                 $reccuringEvents = getRecurringEvents( $row, $from_date, $to_date );
  66                                 $events = array_merge( $events, $reccuringEvents );
  67                         } else {
  68                                 $events []= $row;
  69                         }
  70                 }
  71         }
  72
  73         return $events;
  74 }
  75
  76 function fetchAllEvents( $from_date, $to_date, $provider_id = null, $facility_id = null )
  77 {
  78         $where = "";
  79         if ( $provider_id ) $where .= " AND e.pc_aid = '$provider_id'";
  80
  81         $facility_filter = '';
  82         if ( $facility_id ) {
  83                 $event_facility_filter = " AND e.pc_facility = '$facility_id'";
  84                 $provider_facility_filter = " AND users.facility_id = '$facility_id'";
  85         }
  86
  87         $where .= $facility_filter;
  88         $appointments = fetchEvents( $from_date, $to_date, $where );
  89         return $appointments;
  90 }
  91
  92 function fetchAppointments( $from_date, $to_date, $patient_id = null, $provider_id = null, $facility_id = null )
  93 {
  94         $where = "";
  95         if ( $provider_id ) $where .= " AND e.pc_aid = '$provider_id'";
  96         if ( $patient_id ) {
  97                 $where .= " AND e.pc_pid = '$patient_id'";
  98         } else {
  99                 $where .= " AND e.pc_pid != ''";
 100         }
 101
 102         $facility_filter = '';
 103         if ( $facility_id ) {
 104                 $event_facility_filter = " AND e.pc_facility = '$facility_id'";
 105                 $provider_facility_filter = " AND users.facility_id = '$facility_id'";
 106         }
 107
 108         $where .= $facility_filter;
 109         $appointments = fetchEvents( $from_date, $to_date, $where );
 110         return $appointments;
 111 }
 112
 113 function getRecurringEvents( $event, $from_date, $to_date )
 114 {
 115         $repeatEvents = array();
 116         $from_date_time = strtotime( $from_date . " 00:00:00" );
 117         $thistime = strtotime( $event['pc_eventDate'] . " 00:00:00" );
 118         $thistime = max( $thistime, $from_date_time );
 119         if ( $event['pc_recurrtype'] )
 120         {
 121                 preg_match( '/"event_repeat_freq_type";s:1:"(\d)"/', $event['pc_recurrspec'], $matches );
 122                 $repeattype = $matches[1];
 123
 124                 preg_match( '/"event_repeat_freq";s:1:"(\d)"/', $event['pc_recurrspec'], $matches );
 125                 $repeatfreq = $matches[1];
 126                 if ( !$repeatfreq ) $repeatfreq = 1;
 127
 128                 $upToDate = strtotime( $to_date." 23:59:59" ); // set the up-to-date to the last second of the "to_date"
 129                 $endtime = strtotime( $event['pc_endDate'] . " 23:59:59" );
 130                 if ( $endtime > $upToDate ) $endtime = $upToDate;
 131
 132                 $repeatix = 0;
 133                 while ( $thistime < $endtime )
 134                 {
 135                         // Skip the event if a repeat frequency > 1 was specified and this is
 136                         // not the desired occurrence.
 137                         if ( !$repeatix)
 138                         {
 139                                 $newEvent = $event;
 140                                 $eventDate = date( "Y-m-d", $thistime );
 141                                 $newEvent['pc_eventDate'] = $eventDate;
 142                                 $newEvent['pc_endDate'] = $eventDate;
 143                                 $repeatEvents []= $newEvent;
 144                         }
 145
 146                         if  ( ++$repeatix >= $repeatfreq ) $repeatix = 0;
 147
 148                         $adate = getdate($thistime);
 149                         if ($repeattype == 0)        { // daily
 150                                 $adate['mday'] += 1;
 151                         } else if ($repeattype == 1) { // weekly
 152                                 $adate['mday'] += 7;
 153                         } else if ($repeattype == 2) { // monthly
 154                                 $adate['mon'] += 1;
 155                         } else if ($repeattype == 3) { // yearly
 156                                 $adate['year'] += 1;
 157                         } else if ($repeattype == 4) { // work days
 158                                 if ($adate['wday'] == 5)      // if friday, skip to monday
 159                                 $adate['mday'] += 3;
 160                                 else if ($adate['wday'] == 6) // saturday should not happen
 161                                 $adate['mday'] += 2;
 162                                 else
 163                                 $adate['mday'] += 1;
 164                         } else {
 165                                 die("Invalid repeat type '$repeattype'");
 166                         }
 167                         $thistime = mktime(0, 0, 0, $adate['mon'], $adate['mday'], $adate['year']);
 168                 }
 169         }
 170
 171         return $repeatEvents;
 172 }
 173
 174 // get the event slot size in seconds
 175 function getSlotSize()
 176 {
 177         if ( isset( $GLOBALS['calendar_interval'] ) ) {
 178                 return $GLOBALS['calendar_interval'] * 60;
 179         }
 180         return 15 * 60;
 181 }
 182
 183 function getAvailableSlots( $from_date, $to_date, $provider_id = null, $facility_id = null )
 184 {
 185         $appointments = fetchAllEvents( $from_date, $to_date, $provider_id, $facility_id );
 186         $appointments = sortAppointments( $appointments, "date" );
 187         $from_datetime = strtotime( $from_date." 00:00:00" );
 188         $to_datetime = strtotime( $to_date." 23:59:59" );
 189         $availableSlots = array();
 190         $start_time = 0;
 191         $date = 0;
 192         for ( $i = 0; $i < count( $appointments ); ++$i )
 193         {
 194                 if ( $appointments[$i]['pc_catid'] == 2 ) { // 2 == In Office
 195                         $start_time = $appointments[$i]['pc_startTime'];
 196                         $date = $appointments[$i]['pc_eventDate'];
 197                         $provider_id = $appointments[$i]['uprovider_id'];
 198                 } else if ( $appointments[$i]['pc_catid'] == 3 ) { // 3 == Out Of Office
 199                         continue;
 200                 } else {
 201                         $start_time = $appointments[$i]['pc_endTime'];
 202                         $date = $appointments[$i]['pc_eventDate'];
 203                         $provider_id = $appointments[$i]['uprovider_id'];
 204                 }
 205
 206                 // find next appointment with the same provider
 207                 $next_appointment_date = 0;
 208                 $next_appointment_time = 0;
 209                 for ( $j = $i+1; $j < count( $appointments ); ++$j ) {
 210                         if ( $appointments[$j]['uprovider_id'] == $provider_id ) {
 211                                 $next_appointment_date = $appointments[$j]['pc_eventDate'];
 212                                 $next_appointment_time = $appointments[$j]['pc_startTime'];
 213                                 break;
 214                         }
 215                 }
 216
 217                 $same_day = ( strtotime( $next_appointment_date ) == strtotime( $date ) ) ? true : false;
 218
 219                 if ( $next_appointment_time && $same_day ) {
 220                         // check the start time of the next appointment
 221
 222                         $start_datetime = strtotime( $date." ".$start_time );
 223                         $next_appointment_datetime = strtotime( $next_appointment_date." ".$next_appointment_time );
 224                         $curr_time = $start_datetime;
 225                         while ( $curr_time < $next_appointment_datetime - (getSlotSize() / 2) ) {
 226                                 //create a new appointment ever 15 minutes
 227                                 $time = date( "H:i:s", $curr_time );
 228                                 $available_slot = createAvailableSlot(
 229                                         $appointments[$i]['pc_eventDate'],
 230                                         $time,
 231                                         $appointments[$i]['ufname'],
 232                                         $appointments[$i]['ulname'],
 233                                         $appointments[$i]['umname'] );
 234                                 $availableSlots []= $available_slot;
 235                                 $curr_time += getSlotSize(); // add a 15-minute slot
 236                         }
 237                 }
 238         }
 239
 240         return $availableSlots;
 241 }
 242
 243 function createAvailableSlot( $event_date, $start_time, $provider_fname, $provider_lname, $provider_mname = "", $cat_name = "Available" )
 244 {
 245         $newSlot = array();
 246         $newSlot['ulname'] = $provider_lname;
 247         $newSlot['ufname'] = $provider_fname;
 248         $newSlot['umname'] = $provider_mname;
 249         $newSlot['pc_eventDate'] = $event_date;
 250         $newSlot['pc_startTime'] = $start_time;
 251         $newSlot['pc_endTime'] = $start_time;
 252         $newSlot['pc_catname'] = $cat_name;
 253         return $newSlot;
 254 }
 255
 256 function getCompareFunction( $code ) {
 257         global $COMPARE_FUNCTION_HASH;
 258         return $COMPARE_FUNCTION_HASH[$code];
 259 }
 260
 261 function getComparisonOrder( $code ) {
 262         global $ORDERHASH;
 263         return $ORDERHASH[$code];
 264 }
 265
 266 function sortAppointments( array $appointments, $orderBy = 'date' )
 267 {
 268         global $appointment_sort_order;
 269         $appointment_sort_order = $orderBy;
 270         usort( $appointments, "compareAppointments" );
 271         return $appointments;
 272 }
 273
 274 // cmp_function for usort
 275 // The comparison function must return an integer less than, equal to,
 276 // or greater than zero if the first argument is considered to be respectively less than, equal to, or greater than the second.
 277 function compareAppointments( $appointment1, $appointment2 )
 278 {
 279         global $appointment_sort_order;
 280         $comparisonOrder = getComparisonOrder( $appointment_sort_order );
 281         foreach ( $comparisonOrder as $comparison )
 282         {
 283                 $cmp_function = getCompareFunction( $comparison );
 284                 $result = $cmp_function( $appointment1, $appointment2 );
 285                 if ( 0 != $result ) {
 286                         return $result;
 287                 }
 288         }
 289
 290         return 0;
 291 }
 292
 293 function compareBasic( $e1, $e2 )
 294 {
 295         if ( $e1 < $e2 ) {
 296                 return -1;
 297         } else if ( $e1 > $e2 ) {
 298                 return 1;
 299         }
 300
 301         return 0;
 302 }
 303
 304 function compareAppointmentsByDate( $appointment1, $appointment2 )
 305 {
 306         $date1 = strtotime( $appointment1['pc_eventDate'] );
 307         $date2 = strtotime( $appointment2['pc_eventDate'] );
 308
 309         return compareBasic( $date1, $date2 );
 310 }
 311
 312 function compareAppointmentsByTime( $appointment1, $appointment2 )
 313 {
 314         $time1 = strtotime( $appointment1['pc_startTime'] );
 315         $time2 = strtotime( $appointment2['pc_startTime'] );
 316
 317         return compareBasic( $time1, $time2 );
 318 }
 319
 320 function compareAppointmentsByDoctorName( $appointment1, $appointment2 )
 321 {
 322         $name1 = $appointment1['ulname'];
 323         $name2 = $appointment2['ulname'];
 324         $cmp = compareBasic( $name1, $name2 );
 325         if ( $cmp == 0 ) {
 326                 $name1 = $appointment1['ufname'];
 327                 $name2 = $appointment2['ufname'];
 328                 return compareBasic( $name1, $name2 );
 329         }
 330
 331         return $cmp;
 332 }
 333
 334 function compareAppointmentsByPatientName( $appointment1, $appointment2 )
 335 {
 336         $name1 = $appointment1['lname'];
 337         $name2 = $appointment2['lname'];
 338         $cmp = compareBasic( $name1, $name2 );
 339         if ( $cmp == 0 ) {
 340                 $name1 = $appointment1['fname'];
 341                 $name2 = $appointment2['fname'];
 342                 return compareBasic( $name1, $name2 );
 343         }
 344
 345         return $cmp;
 346 }
 347
 348 function compareAppointmentsByType( $appointment1, $appointment2 )
 349 {
 350         $type1 = $appointment1['pc_catid'];
 351         $type2 = $appointment2['pc_catid'];
 352         return compareBasic( $type1, $type2 );
 353 }
 354
 355 function compareAppointmentsByPatientId( $appointment1, $appointment2 )
 356 {
 357         $id1 = $appointment1['pubpid'];
 358         $id2 = $appointment2['pubpid'];
 359         return compareBasic( $id1, $id2 );
 360 }
 361
 362 function compareAppointmentsByComment( $appointment1, $appointment2 )
 363 {
 364         $comment1 = $appointment1['pc_hometext'];
 365         $comment2 = $appointment2['pc_hometext'];
 366         return compareBasic( $comment1, $comment2 );
 367 }
 368
 369 ?>