root
87 lines
2.2 KiB
PHP
87 lines
2.2 KiB
PHP
<?php
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namespace App\Services\Grading;
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use App\Models\CalendarEvent;
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use DateTime;
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class HomeworkTrackingCalendarService
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{
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public function buildDateRange(string $schoolYear, string $semester): array
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{
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$startYear = null;
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if (preg_match('/\b(20\d{2})\b/', $schoolYear, $m)) {
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$startYear = (int) $m[1];
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}
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if ($startYear === null) {
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$today = new DateTime('today');
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return [$today, $today];
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}
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$nextYear = $startYear + 1;
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$sem = strtolower(trim($semester));
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try {
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if ($sem === 'spring') {
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$start = new DateTime("{$nextYear}-01-25");
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$end = new DateTime("{$nextYear}-05-31");
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} else {
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$start = new DateTime("{$startYear}-09-21");
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$end = new DateTime("{$nextYear}-01-18");
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}
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} catch (\Throwable $e) {
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$today = new DateTime('today');
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return [$today, $today];
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}
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return [$start, $end];
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}
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public function buildSundays(DateTime $start, DateTime $end): array
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{
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if ((int) $start->format('w') !== 0) {
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$start = (clone $start)->modify('next sunday');
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}
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$sundays = [];
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$d = clone $start;
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while ($d <= $end) {
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$sundays[] = $d->format('Y-m-d');
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$d->modify('+7 days');
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}
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return $sundays;
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}
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public function eventDays(string $schoolYear): array
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{
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$events = CalendarEvent::getEventsBySchoolYear($schoolYear) ?? [];
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$eventDays = [];
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foreach ($events as $event) {
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$ymd = substr((string) ($event['date'] ?? ''), 0, 10);
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$no = (int) ($event['no_school'] ?? 0);
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if ($ymd && $no === 1) {
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$eventDays[$ymd] = true;
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}
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}
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return $eventDays;
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}
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public function dateToIndex(array $sundays, array $eventDays): array
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{
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$dateToIndex = [];
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$idx = 0;
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foreach ($sundays as $ymd) {
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if (!isset($eventDays[$ymd])) {
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$idx++;
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$dateToIndex[$ymd] = $idx;
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} else {
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$dateToIndex[$ymd] = null;
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}
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}
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return $dateToIndex;
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}
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}
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