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
  13
  14 require_once(dirname(__FILE__)."/encounter_events.inc.php");
  15 require_once(dirname(__FILE__)."/../interface/main/calendar/modules/PostCalendar/pnincludes/Date/Calc.php");
  16
  17
  18 $COMPARE_FUNCTION_HASH = array(
  19     'doctor' => 'compareAppointmentsByDoctorName',
  20     'patient' => 'compareAppointmentsByPatientName',
  21     'pubpid' => 'compareAppointmentsByPatientId',
  22     'date' => 'compareAppointmentsByDate',
  23     'time' => 'compareAppointmentsByTime',
  24     'type' => 'compareAppointmentsByType',
  25     'comment' => 'compareAppointmentsByComment',
  26     'status' => 'compareAppointmentsByStatus',
  27     'completed' => 'compareAppointmentsByCompletedDrugScreen',
  28     'trackerstatus' => 'compareAppointmentsByTrackerStatus'
  29 );
  30
  31 $ORDERHASH = array(
  32     'doctor' => array( 'doctor', 'date', 'time' ),
  33     'patient' => array( 'patient', 'date', 'time' ),
  34     'pubpid' => array( 'pubpid', 'date', 'time' ),
  35     'date' => array( 'date', 'time', 'type', 'patient' ),
  36     'time' => array( 'time', 'date', 'patient' ),
  37     'type' => array( 'type', 'date', 'time', 'patient' ),
  38     'comment' => array( 'comment', 'date', 'time', 'patient' ),
  39     'status' => array( 'status', 'date', 'time', 'patient' ),
  40     'completed' => array( 'completed', 'date', 'time', 'patient' ),
  41     'trackerstatus' => array( 'trackerstatus', 'date', 'time', 'patient' ),
  42 );
  43
  44 /*Arrays for the interpretation of recurrence patterns.*/
  45 $REPEAT_FREQ = array(
  46     '1' => xl('Every'),
  47     '2' => xl('Every 2nd'),
  48     '3' => xl('Every 3rd'),
  49     '4' => xl('Every 4th'),
  50     '5' => xl('Every 5th'),
  51     '6' => xl('Every 6th')
  52 );
  53
  54 $REPEAT_FREQ_TYPE = array(
  55     '0' => xl('day'),
  56     '1' => xl('week'),
  57     '2' => xl('month'),
  58     '3' => xl('year'),
  59     '4' => xl('workday')
  60 );
  61
  62 $REPEAT_ON_NUM = array(
  63     '1' => xl('1st'),
  64     '2' => xl('2nd'),
  65     '3' => xl('3rd'),
  66     '4' => xl('4th'),
  67     '5' => xl('Last')
  68 );
  69
  70 $REPEAT_ON_DAY = array(
  71     '0' => xl('Sunday'),
  72     '1' => xl('Monday'),
  73     '2' => xl('Tuesday'),
  74     '3' => xl('Wednesday'),
  75     '4' => xl('Thursday'),
  76     '5' => xl('Friday'),
  77     '6' => xl('Saturday')
  78 );
  79
  80 function fetchEvents($from_date, $to_date, $where_param = null, $orderby_param = null, $tracker_board = false, $nextX = 0, $bind_param = null, $query_param = null)
  81 {
  82
  83     $sqlBindArray = array();
  84
  85     if ($query_param) {
  86         $query = $query_param;
  87
  88         if ($bind_param) {
  89             $sqlBindArray = $bind_param;
  90         }
  91     } else {
  92         //////
  93         if ($nextX) {
  94             $where =
  95             "((e.pc_endDate >= ? AND e.pc_recurrtype > '0') OR " .
  96             "(e.pc_eventDate >= ?))";
  97
  98             array_push($sqlBindArray, $from_date, $from_date);
  99         } else {
 100           //////
 101             $where =
 102             "((e.pc_endDate >= ? AND e.pc_eventDate <= ? AND e.pc_recurrtype > '0') OR " .
 103             "(e.pc_eventDate >= ? AND e.pc_eventDate <= ?))";
 104
 105             array_push($sqlBindArray, $from_date, $to_date, $from_date, $to_date);
 106         }
 107
 108         if ($where_param) {
 109             $where .= $where_param;
 110         }
 111
 112         $order_by = "e.pc_eventDate, e.pc_startTime";
 113         if ($orderby_param) {
 114              $order_by = $orderby_param;
 115         }
 116
 117         // Tracker Board specific stuff
 118         $tracker_fields = '';
 119         $tracker_joins = '';
 120         if ($tracker_board) {
 121             $tracker_fields = "e.pc_room, e.pc_pid, t.id, t.date, t.apptdate, t.appttime, t.eid, t.pid, t.original_user, t.encounter, t.lastseq, t.random_drug_test, t.drug_screen_completed, " .
 122             "q.pt_tracker_id, q.start_datetime, q.room, q.status, q.seq, q.user, " .
 123             "s.toggle_setting_1, s.toggle_setting_2, s.option_id, ";
 124             $tracker_joins = "LEFT OUTER JOIN patient_tracker AS t ON t.pid = e.pc_pid AND t.apptdate = e.pc_eventDate AND t.appttime = e.pc_starttime AND t.eid = e.pc_eid " .
 125             "LEFT OUTER JOIN patient_tracker_element AS q ON q.pt_tracker_id = t.id AND q.seq = t.lastseq " .
 126             "LEFT OUTER JOIN list_options AS s ON s.list_id = 'apptstat' AND s.option_id = q.status AND s.activity = 1 " ;
 127         }
 128
 129         $query = "SELECT " .
 130         "e.pc_eventDate, e.pc_endDate, e.pc_startTime, e.pc_endTime, e.pc_duration, e.pc_recurrtype, e.pc_recurrspec, e.pc_recurrfreq, e.pc_catid, e.pc_eid, e.pc_gid, " .
 131         "e.pc_title, e.pc_hometext, e.pc_apptstatus, " .
 132         "p.fname, p.mname, p.lname, p.pid, p.pubpid, p.phone_home, p.phone_cell, " .
 133         "p.hipaa_allowsms, p.phone_home, p.phone_cell, p.hipaa_voice, p.hipaa_allowemail, p.email, " .
 134         "u.fname AS ufname, u.mname AS umname, u.lname AS ulname, u.id AS uprovider_id, " .
 135         "f.name, " .
 136         "$tracker_fields" .
 137         "c.pc_catname, c.pc_catid, e.pc_facility " .
 138         "FROM openemr_postcalendar_events AS e " .
 139         "$tracker_joins" .
 140         "LEFT OUTER JOIN facility AS f ON e.pc_facility = f.id " .
 141         "LEFT OUTER JOIN patient_data AS p ON p.pid = e.pc_pid " .
 142         "LEFT OUTER JOIN users AS u ON u.id = e.pc_aid " .
 143         "LEFT OUTER JOIN openemr_postcalendar_categories AS c ON c.pc_catid = e.pc_catid " .
 144         "WHERE $where " .
 145         "ORDER BY $order_by";
 146
 147         if ($bind_param) {
 148             $sqlBindArray = array_merge($sqlBindArray, $bind_param);
 149         }
 150     }
 151
 152
 153   ///////////////////////////////////////////////////////////////////////
 154   // The following code is from the calculateEvents function in the    //
 155   // PostCalendar Module modified and inserted here by epsdky          //
 156   ///////////////////////////////////////////////////////////////////////
 157
 158     $events2 = array();
 159
 160     $res = sqlStatement($query, $sqlBindArray);
 161
 162   ////////
 163     if ($nextX) {
 164         global $resNotNull;
 165         $resNotNull = (isset($res) && $res != null);
 166     }
 167
 168     while ($event = sqlFetchArray($res)) {
 169         ///////
 170         if ($nextX) {
 171             $stopDate = $event['pc_endDate'];
 172         } else {
 173             $stopDate = ($event['pc_endDate'] <= $to_date) ? $event['pc_endDate'] : $to_date;
 174         }
 175
 176         ///////
 177         $incX = 0;
 178         switch ($event['pc_recurrtype']) {
 179             case '0':
 180                 $events2[] = $event;
 181
 182                 break;
 183       //////
 184             case '1':
 185             case '3':
 186                 $event_recurrspec = @unserialize($event['pc_recurrspec']);
 187
 188                 $rfreq = $event_recurrspec['event_repeat_freq'];
 189                 $rtype = $event_recurrspec['event_repeat_freq_type'];
 190                 $exdate = $event_recurrspec['exdate'];
 191
 192                 list($ny,$nm,$nd) = explode('-', $event['pc_eventDate']);
 193         //        $occurance = Date_Calc::dateFormat($nd,$nm,$ny,'%Y-%m-%d');
 194                 $occurance = $event['pc_eventDate'];
 195
 196                 while ($occurance < $from_date) {
 197                     $occurance =& __increment($nd, $nm, $ny, $rfreq, $rtype);
 198                     list($ny,$nm,$nd) = explode('-', $occurance);
 199                 }
 200
 201                 while ($occurance <= $stopDate) {
 202                     $excluded = false;
 203                     if (isset($exdate)) {
 204                         foreach (explode(",", $exdate) as $exception) {
 205                             // occurrance format == yyyy-mm-dd
 206                             // exception format == yyyymmdd
 207                             if (preg_replace("/-/", "", $occurance) == $exception) {
 208                                 $excluded = true;
 209                             }
 210                         }
 211                     }
 212
 213                     if ($excluded == false) {
 214                         $event['pc_eventDate'] = $occurance;
 215                         $event['pc_endDate'] = '0000-00-00';
 216                         $events2[] = $event;
 217                       //////
 218                         if ($nextX) {
 219                             ++$incX;
 220                             if ($incX == $nextX) {
 221                                 break;
 222                             }
 223                         }
 224
 225                       //////
 226                     }
 227
 228                     $occurance =& __increment($nd, $nm, $ny, $rfreq, $rtype);
 229                     list($ny,$nm,$nd) = explode('-', $occurance);
 230                 }
 231                 break;
 232
 233       //////
 234             case '2':
 235                 $event_recurrspec = @unserialize($event['pc_recurrspec']);
 236
 237                 $rfreq = $event_recurrspec['event_repeat_on_freq'];
 238                 $rnum  = $event_recurrspec['event_repeat_on_num'];
 239                 $rday  = $event_recurrspec['event_repeat_on_day'];
 240                 $exdate = $event_recurrspec['exdate'];
 241
 242                 list($ny,$nm,$nd) = explode('-', $event['pc_eventDate']);
 243
 244                 if (isset($event_recurrspec['rt2_pf_flag']) && $event_recurrspec['rt2_pf_flag']) {
 245                     $nd = 1;
 246                 }
 247
 248                 $occuranceYm = "$ny-$nm"; // YYYY-mm
 249                 $from_dateYm = substr($from_date, 0, 7); // YYYY-mm
 250                 $stopDateYm = substr($stopDate, 0, 7); // YYYY-mm
 251
 252                 // $nd will sometimes be 29, 30 or 31 and if used in the mktime functions below
 253                 // a problem with overflow will occur so it is set to 1 to avoid this (for rt2
 254                 // appointments set prior to fix $nd remains unchanged). This can be done since
 255                 // $nd has no influence past the mktime functions.
 256                 while ($occuranceYm < $from_dateYm) {
 257                     $occuranceYmX = date('Y-m-d', mktime(0, 0, 0, $nm+$rfreq, $nd, $ny));
 258                     list($ny,$nm,$nd) = explode('-', $occuranceYmX);
 259                     $occuranceYm = "$ny-$nm";
 260                 }
 261
 262                 while ($occuranceYm <= $stopDateYm) {
 263                     // (YYYY-mm)-dd
 264                     $dnum = $rnum;
 265                     do {
 266                         $occurance = Date_Calc::NWeekdayOfMonth($dnum--, $rday, $nm, $ny, $format = "%Y-%m-%d");
 267                     } while ($occurance === -1);
 268
 269                     if ($occurance >= $from_date && $occurance <= $stopDate) {
 270                         $excluded = false;
 271                         if (isset($exdate)) {
 272                             foreach (explode(",", $exdate) as $exception) {
 273                                 // occurrance format == yyyy-mm-dd
 274                                 // exception format == yyyymmdd
 275                                 if (preg_replace("/-/", "", $occurance) == $exception) {
 276                                     $excluded = true;
 277                                 }
 278                             }
 279                         }
 280
 281                         if ($excluded == false) {
 282                             $event['pc_eventDate'] = $occurance;
 283                             $event['pc_endDate'] = '0000-00-00';
 284                             $events2[] = $event;
 285                             //////
 286                             if ($nextX) {
 287                                 ++$incX;
 288                                 if ($incX == $nextX) {
 289                                     break;
 290                                 }
 291                             }
 292
 293                             //////
 294                         }
 295                     }
 296
 297                     $occuranceYmX = date('Y-m-d', mktime(0, 0, 0, $nm+$rfreq, $nd, $ny));
 298                     list($ny,$nm,$nd) = explode('-', $occuranceYmX);
 299                     $occuranceYm = "$ny-$nm";
 300                 }
 301                 break;
 302         }
 303     }
 304
 305     return $events2;
 306 ////////////////////// End of code inserted by epsdky
 307 }
 308
 309 function fetchAllEvents($from_date, $to_date, $provider_id = null, $facility_id = null)
 310 {
 311     $sqlBindArray = array();
 312
 313     $where = "";
 314
 315     if ($provider_id) {
 316         $where .= " AND e.pc_aid = ?";
 317         array_push($sqlBindArray, $provider_id);
 318     }
 319
 320     if ($facility_id) {
 321         $where .= " AND e.pc_facility = ? AND u.facility_id = ?";
 322         array_push($sqlBindArray, $facility_id, $facility_id);
 323     }
 324
 325     $appointments = fetchEvents($from_date, $to_date, $where, null, false, 0, $sqlBindArray);
 326     return $appointments;
 327 }
 328
 329 //Support for therapy group appointments added by shachar z.
 330 function fetchAppointments($from_date, $to_date, $patient_id = null, $provider_id = null, $facility_id = null, $pc_appstatus = null, $with_out_provider = null, $with_out_facility = null, $pc_catid = null, $tracker_board = false, $nextX = 0, $group_id = null, $patient_name = null)
 331 {
 332     $sqlBindArray = array();
 333
 334     $where = "";
 335
 336     if ($provider_id) {
 337         $where .= " AND e.pc_aid = ?";
 338         array_push($sqlBindArray, $provider_id);
 339     }
 340
 341     if ($patient_id) {
 342         $where .= " AND e.pc_pid = ?";
 343         array_push($sqlBindArray, $patient_id);
 344     } elseif ($group_id) {
 345         //if $group_id this means we want only the group events
 346         $where .= " AND e.pc_gid = ? AND e.pc_pid = ''";
 347         array_push($sqlBindArray, $group_id);
 348     } else {
 349         $where .= " AND e.pc_pid != ''";
 350     }
 351
 352     if ($facility_id) {
 353         $where .= " AND e.pc_facility = ?";
 354         array_push($sqlBindArray, $facility_id);
 355     }
 356
 357     //Appointment Status Checking
 358     if ($pc_appstatus != '') {
 359         $where .= " AND e.pc_apptstatus = ?";
 360         array_push($sqlBindArray, $pc_appstatus);
 361     }
 362
 363     if ($pc_catid != null) {
 364         $where .= " AND e.pc_catid = ?";
 365         array_push($sqlBindArray, $pc_catid);
 366     }
 367
 368     if ($patient_name != null) {
 369         $where .= " AND (p.fname LIKE CONCAT('%',?,'%') OR p.lname LIKE CONCAT('%',?,'%'))";
 370         array_push($sqlBindArray, $patient_name, $patient_name);
 371     }
 372
 373     //Without Provider checking
 374     if ($with_out_provider != '') {
 375         $where .= " AND e.pc_aid = ''";
 376     }
 377
 378     //Without Facility checking
 379     if ($with_out_facility != '') {
 380         $where .= " AND e.pc_facility = 0";
 381     }
 382
 383     $appointments = fetchEvents($from_date, $to_date, $where, '', $tracker_board, $nextX, $sqlBindArray);
 384     return $appointments;
 385 }
 386
 387 //Support for therapy group appointments added by shachar z.
 388 function fetchNextXAppts($from_date, $patient_id, $nextX = 1, $group_id = null)
 389 {
 390
 391     $appts = array();
 392     $nextXAppts = array();
 393     $appts = fetchAppointments($from_date, null, $patient_id, null, null, null, null, null, null, false, $nextX, $group_id);
 394     if ($appts) {
 395         $appts = sortAppointments($appts);
 396         $nextXAppts = array_slice($appts, 0, $nextX);
 397     }
 398
 399     return $nextXAppts;
 400 }
 401
 402 // get the event slot size in seconds
 403 function getSlotSize()
 404 {
 405     if (isset($GLOBALS['calendar_interval'])) {
 406         return $GLOBALS['calendar_interval'] * 60;
 407     }
 408
 409     return 15 * 60;
 410 }
 411
 412 function getAvailableSlots($from_date, $to_date, $provider_id = null, $facility_id = null)
 413 {
 414     $appointments = fetchAllEvents($from_date, $to_date, $provider_id, $facility_id);
 415     $appointments = sortAppointments($appointments, "date");
 416     $from_datetime = strtotime($from_date." 00:00:00");
 417     $to_datetime = strtotime($to_date." 23:59:59");
 418     $availableSlots = array();
 419     $start_time = 0;
 420     $date = 0;
 421     for ($i = 0; $i < count($appointments); ++$i) {
 422         if ($appointments[$i]['pc_catid'] == 2) { // 2 == In Office
 423             $start_time = $appointments[$i]['pc_startTime'];
 424             $date = $appointments[$i]['pc_eventDate'];
 425             $provider_id = $appointments[$i]['uprovider_id'];
 426         } else if ($appointments[$i]['pc_catid'] == 3) { // 3 == Out Of Office
 427             continue;
 428         } else {
 429             $start_time = $appointments[$i]['pc_endTime'];
 430             $date = $appointments[$i]['pc_eventDate'];
 431             $provider_id = $appointments[$i]['uprovider_id'];
 432         }
 433
 434         // find next appointment with the same provider
 435         $next_appointment_date = 0;
 436         $next_appointment_time = 0;
 437         for ($j = $i+1; $j < count($appointments); ++$j) {
 438             if ($appointments[$j]['uprovider_id'] == $provider_id) {
 439                 $next_appointment_date = $appointments[$j]['pc_eventDate'];
 440                 $next_appointment_time = $appointments[$j]['pc_startTime'];
 441                 break;
 442             }
 443         }
 444
 445         $same_day = ( strtotime($next_appointment_date) == strtotime($date) ) ? true : false;
 446
 447         if ($next_appointment_time && $same_day) {
 448             // check the start time of the next appointment
 449
 450             $start_datetime = strtotime($date." ".$start_time);
 451             $next_appointment_datetime = strtotime($next_appointment_date." ".$next_appointment_time);
 452             $curr_time = $start_datetime;
 453             while ($curr_time < $next_appointment_datetime - (getSlotSize() / 2)) {
 454                 //create a new appointment ever 15 minutes
 455                 $time = date("H:i:s", $curr_time);
 456                 $available_slot = createAvailableSlot(
 457                     $appointments[$i]['pc_eventDate'],
 458                     $time,
 459                     $appointments[$i]['ufname'],
 460                     $appointments[$i]['ulname'],
 461                     $appointments[$i]['umname']
 462                 );
 463                 $availableSlots []= $available_slot;
 464                 $curr_time += getSlotSize(); // add a 15-minute slot
 465             }
 466         }
 467     }
 468
 469     return $availableSlots;
 470 }
 471
 472 function createAvailableSlot($event_date, $start_time, $provider_fname, $provider_lname, $provider_mname = "", $cat_name = "Available")
 473 {
 474     $newSlot = array();
 475     $newSlot['ulname'] = $provider_lname;
 476     $newSlot['ufname'] = $provider_fname;
 477     $newSlot['umname'] = $provider_mname;
 478     $newSlot['pc_eventDate'] = $event_date;
 479     $newSlot['pc_startTime'] = $start_time;
 480     $newSlot['pc_endTime'] = $start_time;
 481     $newSlot['pc_catname'] = $cat_name;
 482     return $newSlot;
 483 }
 484
 485 function getCompareFunction($code)
 486 {
 487     global $COMPARE_FUNCTION_HASH;
 488     return $COMPARE_FUNCTION_HASH[$code];
 489 }
 490
 491 function getComparisonOrder($code)
 492 {
 493     global $ORDERHASH;
 494     return $ORDERHASH[$code];
 495 }
 496
 497
 498 function sortAppointments(array $appointments, $orderBy = 'date')
 499 {
 500     global $appointment_sort_order;
 501     $appointment_sort_order = $orderBy;
 502     usort($appointments, "compareAppointments");
 503     return $appointments;
 504 }
 505
 506 // cmp_function for usort
 507 // The comparison function must return an integer less than, equal to,
 508 // or greater than zero if the first argument is considered to be respectively less than, equal to, or greater than the second.
 509 function compareAppointments($appointment1, $appointment2)
 510 {
 511     global $appointment_sort_order;
 512     $comparisonOrder = getComparisonOrder($appointment_sort_order);
 513     foreach ($comparisonOrder as $comparison) {
 514         $cmp_function = getCompareFunction($comparison);
 515         $result = $cmp_function($appointment1, $appointment2);
 516         if (0 != $result) {
 517             return $result;
 518         }
 519     }
 520
 521     return 0;
 522 }
 523
 524 function compareBasic($e1, $e2)
 525 {
 526     if ($e1 < $e2) {
 527         return -1;
 528     } else if ($e1 > $e2) {
 529         return 1;
 530     }
 531
 532     return 0;
 533 }
 534
 535 function compareAppointmentsByDate($appointment1, $appointment2)
 536 {
 537     $date1 = strtotime($appointment1['pc_eventDate']);
 538     $date2 = strtotime($appointment2['pc_eventDate']);
 539
 540     return compareBasic($date1, $date2);
 541 }
 542
 543 function compareAppointmentsByTime($appointment1, $appointment2)
 544 {
 545     $time1 = strtotime($appointment1['pc_startTime']);
 546     $time2 = strtotime($appointment2['pc_startTime']);
 547
 548     return compareBasic($time1, $time2);
 549 }
 550
 551 function compareAppointmentsByDoctorName($appointment1, $appointment2)
 552 {
 553     $name1 = $appointment1['ulname'];
 554     $name2 = $appointment2['ulname'];
 555     $cmp = compareBasic($name1, $name2);
 556     if ($cmp == 0) {
 557         $name1 = $appointment1['ufname'];
 558         $name2 = $appointment2['ufname'];
 559         return compareBasic($name1, $name2);
 560     }
 561
 562     return $cmp;
 563 }
 564
 565 function compareAppointmentsByPatientName($appointment1, $appointment2)
 566 {
 567     $name1 = $appointment1['lname'];
 568     $name2 = $appointment2['lname'];
 569     $cmp = compareBasic($name1, $name2);
 570     if ($cmp == 0) {
 571         $name1 = $appointment1['fname'];
 572         $name2 = $appointment2['fname'];
 573         return compareBasic($name1, $name2);
 574     }
 575
 576     return $cmp;
 577 }
 578
 579 function compareAppointmentsByType($appointment1, $appointment2)
 580 {
 581     $type1 = $appointment1['pc_catid'];
 582     $type2 = $appointment2['pc_catid'];
 583     return compareBasic($type1, $type2);
 584 }
 585
 586 function compareAppointmentsByPatientId($appointment1, $appointment2)
 587 {
 588     $id1 = $appointment1['pubpid'];
 589     $id2 = $appointment2['pubpid'];
 590     return compareBasic($id1, $id2);
 591 }
 592
 593 function compareAppointmentsByComment($appointment1, $appointment2)
 594 {
 595     $comment1 = $appointment1['pc_hometext'];
 596     $comment2 = $appointment2['pc_hometext'];
 597     return compareBasic($comment1, $comment2);
 598 }
 599
 600 function compareAppointmentsByStatus($appointment1, $appointment2)
 601 {
 602     $status1 = $appointment1['pc_apptstatus'];
 603     $status2 = $appointment2['pc_apptstatus'];
 604     return compareBasic($status1, $status2);
 605 }
 606
 607 function compareAppointmentsByTrackerStatus($appointment1, $appointment2)
 608 {
 609     $trackerstatus1 = $appointment1['status'];
 610     $trackerstatus2 = $appointment2['status'];
 611     return compareBasic($trackerstatus1, $trackerstatus2);
 612 }
 613
 614 function compareAppointmentsByCompletedDrugScreen($appointment1, $appointment2)
 615 {
 616     $completed1 = $appointment1['drug_screen_completed'];
 617     $completed2 = $appointment2['drug_screen_completed'];
 618     return compareBasic($completed1, $completed2);
 619 }
 620
 621 function fetchAppointmentCategories()
 622 {
 623      $catSQL= " SELECT pc_catid as id, pc_catname as category "
 624             . " FROM openemr_postcalendar_categories WHERE pc_recurrtype=0 and pc_cattype=0";
 625     if ($GLOBALS['enable_group_therapy']) {
 626         $catSQL .= " OR pc_cattype=3";
 627     }
 628
 629     $catSQL .= "  ORDER BY category";
 630      return sqlStatement($catSQL);
 631 }
 632
 633 function interpretRecurrence($recurr_freq, $recurr_type)
 634 {
 635     global $REPEAT_FREQ, $REPEAT_FREQ_TYPE, $REPEAT_ON_NUM, $REPEAT_ON_DAY;
 636     $interpreted = "";
 637     $recurr_freq = unserialize($recurr_freq);
 638     if ($recurr_type == 1) {
 639         $interpreted = $REPEAT_FREQ[$recurr_freq['event_repeat_freq']];
 640         $interpreted .= " " . $REPEAT_FREQ_TYPE[$recurr_freq['event_repeat_freq_type']];
 641     } elseif ($recurr_type == 2) {
 642         $interpreted = $REPEAT_FREQ[$recurr_freq['event_repeat_on_freq']];
 643         $interpreted .= " " . $REPEAT_ON_NUM[$recurr_freq['event_repeat_on_num']];
 644         $interpreted .= " " . $REPEAT_ON_DAY[$recurr_freq['event_repeat_on_day']];
 645     } elseif ($recurr_type == 3) {
 646         $interpreted = $REPEAT_FREQ[1];
 647         $comma = "";
 648         $day_arr = explode(",", $recurr_freq['event_repeat_freq']);
 649         foreach ($day_arr as $day) {
 650             $interpreted .= $comma . " " . $REPEAT_ON_DAY[$day - 1];
 651             $comma = ",";
 652         }
 653     }
 654
 655     return $interpreted;
 656 }
 657
 658 function fetchRecurrences($pid)
 659 {
 660     $query = "SELECT pe.pc_title, pe.pc_endDate, pe.pc_recurrtype, pe.pc_recurrspec, pc.pc_catname FROM openemr_postcalendar_events AS pe "
 661                     . "JOIN openemr_postcalendar_categories AS pc ON pe.pc_catid=pc.pc_catid "
 662                     . "WHERE pe.pc_pid = ?  AND pe.pc_recurrtype > 0;";
 663     $sqlBindArray = array();
 664     array_push($sqlBindArray, $pid);
 665     $res = sqlStatement($query, $sqlBindArray);
 666     $row = 0;
 667     while ($res_arr[$row] = sqlFetchArray($res)) {
 668         $res_arr[$row]['pc_recurrspec'] = interpretRecurrence($res_arr[$row]['pc_recurrspec'], $res_arr[$row]['pc_recurrtype']);
 669         $row++;
 670     }
 671
 672     return $res_arr;
 673 }
 674
 675 function ends_in_a_week($end_date)
 676 {
 677     $timestamp_in_a_week = strtotime('+7 day');
 678     $timestamp_end_date = strtotime($end_date);
 679     if ($timestamp_in_a_week > $timestamp_end_date) {
 680         return true; //ends in a week
 681     }
 682
 683     return false; // ends in more than a week
 684 }
 685
 686 //Checks if recurrence is current (didn't end yet).
 687 function recurrence_is_current($end_date)
 688 {
 689     $end_date_timestamp = strtotime($end_date);
 690     $current_timestamp = time();
 691     if ($current_timestamp <= $end_date_timestamp) {
 692         return true; //recurrence is current
 693     }
 694
 695     return false;
 696 }