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         'status' => 'compareAppointmentsByStatus'
  21 );
  22
  23 $ORDERHASH = array(
  24         'doctor' => array( 'doctor', 'date', 'time' ),
  25         'patient' => array( 'patient', 'date', 'time' ),
  26         'pubpid' => array( 'pubpid', 'date', 'time' ),
  27         'date' => array( 'date', 'time', 'type', 'patient' ),
  28         'time' => array( 'time', 'date', 'patient' ),
  29         'type' => array( 'type', 'date', 'time', 'patient' ),
  30         'comment' => array( 'comment', 'date', 'time', 'patient' ),
  31         'status' => array( 'status', 'date', 'time', 'patient' )
  32 );
  33
  34 function fetchEvents( $from_date, $to_date, $where_param = null, $orderby_param = null )
  35 {
  36         $where =
  37                 "( (e.pc_endDate >= '$from_date' AND e.pc_eventDate <= '$to_date' AND e.pc_recurrtype = '1') OR " .
  38                   "(e.pc_eventDate >= '$from_date' AND e.pc_eventDate <= '$to_date') )";
  39         if ( $where_param ) $where .= $where_param;
  40
  41         $order_by = "e.pc_eventDate, e.pc_startTime";
  42         if ( $orderby_param ) {
  43                 $order_by = $orderby_param;
  44         }
  45
  46         $query = "SELECT " .
  47         "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, " .
  48         "e.pc_title, e.pc_hometext, e.pc_apptstatus, " .
  49         "p.fname, p.mname, p.lname, p.pid, p.pubpid, p.phone_home, p.phone_cell, " .
  50         "u.fname AS ufname, u.mname AS umname, u.lname AS ulname, u.id AS uprovider_id, " .
  51         "c.pc_catname, c.pc_catid " .
  52         "FROM openemr_postcalendar_events AS e " .
  53         "LEFT OUTER JOIN patient_data AS p ON p.pid = e.pc_pid " .
  54         "LEFT OUTER JOIN users AS u ON u.id = e.pc_aid " .
  55         "LEFT OUTER JOIN openemr_postcalendar_categories AS c ON c.pc_catid = e.pc_catid " .
  56         "WHERE $where " .
  57         "ORDER BY $order_by";
  58
  59         $res = sqlStatement( $query );
  60         $events = array();
  61         if ( $res )
  62         {
  63                 while ( $row = sqlFetchArray($res) )
  64                 {
  65                         // if it's a repeating appointment, fetch all occurances in date range
  66                         if ( $row['pc_recurrtype'] ) {
  67                                 $reccuringEvents = getRecurringEvents( $row, $from_date, $to_date );
  68                                 $events = array_merge( $events, $reccuringEvents );
  69                         } else {
  70                                 $events []= $row;
  71                         }
  72                 }
  73         }
  74
  75         return $events;
  76 }
  77
  78 function fetchAllEvents( $from_date, $to_date, $provider_id = null, $facility_id = null )
  79 {
  80         $where = "";
  81         if ( $provider_id ) $where .= " AND e.pc_aid = '$provider_id'";
  82
  83         $facility_filter = '';
  84         if ( $facility_id ) {
  85                 $event_facility_filter = " AND e.pc_facility = '$facility_id'";
  86                 $provider_facility_filter = " AND u.facility_id = '$facility_id'";
  87                 $facility_filter = $event_facility_filter . $provider_facility_filter;
  88         }
  89
  90         $where .= $facility_filter;
  91         $appointments = fetchEvents( $from_date, $to_date, $where );
  92         return $appointments;
  93 }
  94
  95 function fetchAppointments( $from_date, $to_date, $patient_id = null, $provider_id = null, $facility_id = null, $pc_appstatus = null, $with_out_provider = null, $with_out_facility = null )
  96 {
  97         $where = "";
  98         if ( $provider_id ) $where .= " AND e.pc_aid = '$provider_id'";
  99         if ( $patient_id ) {
 100                 $where .= " AND e.pc_pid = '$patient_id'";
 101         } else {
 102                 $where .= " AND e.pc_pid != ''";
 103         }
 104
 105         $facility_filter = '';
 106         if ( $facility_id ) {
 107                 $event_facility_filter = " AND e.pc_facility = '$facility_id'";
 108                 $provider_facility_filter = " AND u.facility_id = '$facility_id'";
 109                 $facility_filter = $event_facility_filter . $provider_facility_filter;
 110         }
 111
 112         $where .= $facility_filter;
 113
 114         //Appointment Status Checking
 115         $filter_appstatus = '';
 116         if($pc_appstatus != ''){
 117                 $filter_appstatus = " AND e.pc_apptstatus = '".$pc_appstatus."'";
 118         }
 119         $where .= $filter_appstatus;
 120
 121         //Without Provider checking
 122         $filter_woprovider = '';
 123         if($with_out_provider != ''){
 124                 $filter_woprovider = " AND e.pc_aid = ''";
 125         }
 126         $where .= $filter_woprovider;
 127
 128         //Without Facility checking
 129         $filter_wofacility = '';
 130         if($with_out_facility != ''){
 131                 $filter_wofacility = " AND e.pc_facility = 0";
 132         }
 133         $where .= $filter_wofacility;
 134
 135         $appointments = fetchEvents( $from_date, $to_date, $where );
 136         return $appointments;
 137 }
 138
 139 function getRecurringEvents( $event, $from_date, $to_date )
 140 {
 141         $repeatEvents = array();
 142         $from_date_time = strtotime( $from_date . " 00:00:00" );
 143         $thistime = strtotime( $event['pc_eventDate'] . " 00:00:00" );
 144         //$thistime = max( $thistime, $from_date_time );
 145         if ( $event['pc_recurrtype'] )
 146         {
 147                 preg_match( '/"event_repeat_freq_type";s:1:"(\d)"/', $event['pc_recurrspec'], $matches );
 148                 $repeattype = $matches[1];
 149
 150                 preg_match( '/"event_repeat_freq";s:1:"(\d)"/', $event['pc_recurrspec'], $matches );
 151                 $repeatfreq = $matches[1];
 152                 if ( !$repeatfreq ) $repeatfreq = 1;
 153
 154                 $upToDate = strtotime( $to_date." 23:59:59" ); // set the up-to-date to the last second of the "to_date"
 155                 $endtime = strtotime( $event['pc_endDate'] . " 23:59:59" );
 156                 if ( $endtime > $upToDate ) $endtime = $upToDate;
 157
 158                 $repeatix = 0;
 159                 while ( $thistime < $endtime )
 160                 {
 161                         // Skip the event if a repeat frequency > 1 was specified and this is
 162                         // not the desired occurrence.
 163                         if ( !$repeatix ) {
 164                             $inRange = ( $thistime >= $from_date_time && $thistime < $upToDate );
 165                             if ( $inRange ) {
 166                                 $newEvent = $event;
 167                                 $eventDate = date( "Y-m-d", $thistime );
 168                                 $newEvent['pc_eventDate'] = $eventDate;
 169                                 $newEvent['pc_endDate'] = $eventDate;
 170                                 $repeatEvents []= $newEvent;
 171                             }
 172                         }
 173
 174                         if  ( ++$repeatix >= $repeatfreq ) $repeatix = 0;
 175
 176                         $adate = getdate($thistime);
 177                         if ($repeattype == 0)        { // daily
 178                                 $adate['mday'] += 1;
 179                         } else if ($repeattype == 1) { // weekly
 180                                 $adate['mday'] += 7;
 181                         } else if ($repeattype == 2) { // monthly
 182                                 $adate['mon'] += 1;
 183                         } else if ($repeattype == 3) { // yearly
 184                                 $adate['year'] += 1;
 185                         } else if ($repeattype == 4) { // work days
 186                                 if ($adate['wday'] == 5)      // if friday, skip to monday
 187                                 $adate['mday'] += 3;
 188                                 else if ($adate['wday'] == 6) // saturday should not happen
 189                                 $adate['mday'] += 2;
 190                                 else
 191                                 $adate['mday'] += 1;
 192                         } else {
 193                                 die("Invalid repeat type '$repeattype'");
 194                         }
 195                         $thistime = mktime(0, 0, 0, $adate['mon'], $adate['mday'], $adate['year']);
 196                 }
 197         }
 198
 199         return $repeatEvents;
 200 }
 201
 202 // get the event slot size in seconds
 203 function getSlotSize()
 204 {
 205         if ( isset( $GLOBALS['calendar_interval'] ) ) {
 206                 return $GLOBALS['calendar_interval'] * 60;
 207         }
 208         return 15 * 60;
 209 }
 210
 211 function getAvailableSlots( $from_date, $to_date, $provider_id = null, $facility_id = null )
 212 {
 213         $appointments = fetchAllEvents( $from_date, $to_date, $provider_id, $facility_id );
 214         $appointments = sortAppointments( $appointments, "date" );
 215         $from_datetime = strtotime( $from_date." 00:00:00" );
 216         $to_datetime = strtotime( $to_date." 23:59:59" );
 217         $availableSlots = array();
 218         $start_time = 0;
 219         $date = 0;
 220         for ( $i = 0; $i < count( $appointments ); ++$i )
 221         {
 222                 if ( $appointments[$i]['pc_catid'] == 2 ) { // 2 == In Office
 223                         $start_time = $appointments[$i]['pc_startTime'];
 224                         $date = $appointments[$i]['pc_eventDate'];
 225                         $provider_id = $appointments[$i]['uprovider_id'];
 226                 } else if ( $appointments[$i]['pc_catid'] == 3 ) { // 3 == Out Of Office
 227                         continue;
 228                 } else {
 229                         $start_time = $appointments[$i]['pc_endTime'];
 230                         $date = $appointments[$i]['pc_eventDate'];
 231                         $provider_id = $appointments[$i]['uprovider_id'];
 232                 }
 233
 234                 // find next appointment with the same provider
 235                 $next_appointment_date = 0;
 236                 $next_appointment_time = 0;
 237                 for ( $j = $i+1; $j < count( $appointments ); ++$j ) {
 238                         if ( $appointments[$j]['uprovider_id'] == $provider_id ) {
 239                                 $next_appointment_date = $appointments[$j]['pc_eventDate'];
 240                                 $next_appointment_time = $appointments[$j]['pc_startTime'];
 241                                 break;
 242                         }
 243                 }
 244
 245                 $same_day = ( strtotime( $next_appointment_date ) == strtotime( $date ) ) ? true : false;
 246
 247                 if ( $next_appointment_time && $same_day ) {
 248                         // check the start time of the next appointment
 249
 250                         $start_datetime = strtotime( $date." ".$start_time );
 251                         $next_appointment_datetime = strtotime( $next_appointment_date." ".$next_appointment_time );
 252                         $curr_time = $start_datetime;
 253                         while ( $curr_time < $next_appointment_datetime - (getSlotSize() / 2) ) {
 254                                 //create a new appointment ever 15 minutes
 255                                 $time = date( "H:i:s", $curr_time );
 256                                 $available_slot = createAvailableSlot(
 257                                         $appointments[$i]['pc_eventDate'],
 258                                         $time,
 259                                         $appointments[$i]['ufname'],
 260                                         $appointments[$i]['ulname'],
 261                                         $appointments[$i]['umname'] );
 262                                 $availableSlots []= $available_slot;
 263                                 $curr_time += getSlotSize(); // add a 15-minute slot
 264                         }
 265                 }
 266         }
 267
 268         return $availableSlots;
 269 }
 270
 271 function createAvailableSlot( $event_date, $start_time, $provider_fname, $provider_lname, $provider_mname = "", $cat_name = "Available" )
 272 {
 273         $newSlot = array();
 274         $newSlot['ulname'] = $provider_lname;
 275         $newSlot['ufname'] = $provider_fname;
 276         $newSlot['umname'] = $provider_mname;
 277         $newSlot['pc_eventDate'] = $event_date;
 278         $newSlot['pc_startTime'] = $start_time;
 279         $newSlot['pc_endTime'] = $start_time;
 280         $newSlot['pc_catname'] = $cat_name;
 281         return $newSlot;
 282 }
 283
 284 function getCompareFunction( $code ) {
 285         global $COMPARE_FUNCTION_HASH;
 286         return $COMPARE_FUNCTION_HASH[$code];
 287 }
 288
 289 function getComparisonOrder( $code ) {
 290         global $ORDERHASH;
 291         return $ORDERHASH[$code];
 292 }
 293
 294 function sortAppointments( array $appointments, $orderBy = 'date' )
 295 {
 296         global $appointment_sort_order;
 297         $appointment_sort_order = $orderBy;
 298         usort( $appointments, "compareAppointments" );
 299         return $appointments;
 300 }
 301
 302 // cmp_function for usort
 303 // The comparison function must return an integer less than, equal to,
 304 // or greater than zero if the first argument is considered to be respectively less than, equal to, or greater than the second.
 305 function compareAppointments( $appointment1, $appointment2 )
 306 {
 307         global $appointment_sort_order;
 308         $comparisonOrder = getComparisonOrder( $appointment_sort_order );
 309         foreach ( $comparisonOrder as $comparison )
 310         {
 311                 $cmp_function = getCompareFunction( $comparison );
 312                 $result = $cmp_function( $appointment1, $appointment2 );
 313                 if ( 0 != $result ) {
 314                         return $result;
 315                 }
 316         }
 317
 318         return 0;
 319 }
 320
 321 function compareBasic( $e1, $e2 )
 322 {
 323         if ( $e1 < $e2 ) {
 324                 return -1;
 325         } else if ( $e1 > $e2 ) {
 326                 return 1;
 327         }
 328
 329         return 0;
 330 }
 331
 332 function compareAppointmentsByDate( $appointment1, $appointment2 )
 333 {
 334         $date1 = strtotime( $appointment1['pc_eventDate'] );
 335         $date2 = strtotime( $appointment2['pc_eventDate'] );
 336
 337         return compareBasic( $date1, $date2 );
 338 }
 339
 340 function compareAppointmentsByTime( $appointment1, $appointment2 )
 341 {
 342         $time1 = strtotime( $appointment1['pc_startTime'] );
 343         $time2 = strtotime( $appointment2['pc_startTime'] );
 344
 345         return compareBasic( $time1, $time2 );
 346 }
 347
 348 function compareAppointmentsByDoctorName( $appointment1, $appointment2 )
 349 {
 350         $name1 = $appointment1['ulname'];
 351         $name2 = $appointment2['ulname'];
 352         $cmp = compareBasic( $name1, $name2 );
 353         if ( $cmp == 0 ) {
 354                 $name1 = $appointment1['ufname'];
 355                 $name2 = $appointment2['ufname'];
 356                 return compareBasic( $name1, $name2 );
 357         }
 358
 359         return $cmp;
 360 }
 361
 362 function compareAppointmentsByPatientName( $appointment1, $appointment2 )
 363 {
 364         $name1 = $appointment1['lname'];
 365         $name2 = $appointment2['lname'];
 366         $cmp = compareBasic( $name1, $name2 );
 367         if ( $cmp == 0 ) {
 368                 $name1 = $appointment1['fname'];
 369                 $name2 = $appointment2['fname'];
 370                 return compareBasic( $name1, $name2 );
 371         }
 372
 373         return $cmp;
 374 }
 375
 376 function compareAppointmentsByType( $appointment1, $appointment2 )
 377 {
 378         $type1 = $appointment1['pc_catid'];
 379         $type2 = $appointment2['pc_catid'];
 380         return compareBasic( $type1, $type2 );
 381 }
 382
 383 function compareAppointmentsByPatientId( $appointment1, $appointment2 )
 384 {
 385         $id1 = $appointment1['pubpid'];
 386         $id2 = $appointment2['pubpid'];
 387         return compareBasic( $id1, $id2 );
 388 }
 389
 390 function compareAppointmentsByComment( $appointment1, $appointment2 )
 391 {
 392         $comment1 = $appointment1['pc_hometext'];
 393         $comment2 = $appointment2['pc_hometext'];
 394         return compareBasic( $comment1, $comment2 );
 395 }
 396
 397 function compareAppointmentsByStatus( $appointment1, $appointment2 )
 398 {
 399         $status1 = $appointment1['pc_apptstatus'];
 400         $status2 = $appointment2['pc_apptstatus'];
 401         return compareBasic( $status1, $status2 );
 402 }
 403
 404 ?>