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67 lines
2.0 KiB
PHP
67 lines
2.0 KiB
PHP
<?php
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/**
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* Controller for ical output of users own shifts or any user_shifts filter.
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*/
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function user_ical()
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{
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$request = request();
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if (!$request->has('key') || !preg_match('/^[\da-f]{32}$/', $request->input('key'))) {
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engelsystem_error('Missing key.');
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}
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$user = auth()->apiUser('key');
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if (!$user) {
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engelsystem_error('Key invalid.');
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}
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if (!auth()->can('ical')) {
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engelsystem_error('No privilege for ical.');
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}
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$ical_shifts = load_ical_shifts();
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send_ical_from_shifts($ical_shifts);
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}
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/**
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* Renders an ical calendar from given shifts array.
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*
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* @param array $shifts Shift
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*/
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function send_ical_from_shifts($shifts)
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{
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header('Content-Type: text/calendar; charset=utf-8');
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header('Content-Disposition: attachment; filename=shifts.ics');
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$output = "BEGIN:VCALENDAR\r\nVERSION:2.0\r\nPRODID:-//-//" . config('app_name') . "//DE\r\nCALSCALE:GREGORIAN\r\n";
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foreach ($shifts as $shift) {
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$output .= make_ical_entry_from_shift($shift);
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}
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$output .= "END:VCALENDAR\r\n";
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$output = trim($output, "\x0A");
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header('Content-Length: ' . strlen($output));
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raw_output($output);
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}
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/**
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* Renders an ical vevent from given shift.
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*
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* @param array $shift
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* @return string
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*/
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function make_ical_entry_from_shift($shift)
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{
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$output = "BEGIN:VEVENT\r\n";
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$output .= 'UID:' . md5($shift['start'] . $shift['end'] . $shift['name']) . "\r\n";
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$output .= 'SUMMARY:' . str_replace("\n", "\\n", $shift['name'])
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. ' (' . str_replace("\n", "\\n", $shift['title']) . ")\r\n";
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if (isset($shift['Comment'])) {
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$output .= 'DESCRIPTION:' . str_replace("\n", "\\n", $shift['Comment']) . "\r\n";
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}
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$output .= 'DTSTART;TZID=Europe/Berlin:' . date("Ymd\THis", $shift['start']) . "\r\n";
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$output .= 'DTEND;TZID=Europe/Berlin:' . date("Ymd\THis", $shift['end']) . "\r\n";
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$output .= 'LOCATION:' . $shift['Name'] . "\r\n";
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$output .= "END:VEVENT\r\n";
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return $output;
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}
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