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<?php
namespace Engelsystem;
class ShiftCalendarRenderer {
/**
* 15m * 60s/m = 900s
*/
const MINUTES_PER_ROW = 900;
private $shifts;
private $shiftsFilter;
public function __construct($shifts, ShiftsFilter $shiftsFilter) {
$this->shifts = $shifts;
$this->shiftsFilter = $shiftsFilter;
}
public function render() {
$rooms = $this->rooms();
$slotSizes = $this->calcSlotSizes($rooms);
return '';
}
/**
* Calculates the slots for each room that appears in the shifts
*/
private function rooms() {
$rooms = [];
foreach ($this->shifts as $shift) {
if (! isset($rooms[$shift['RID']])) {
$rooms[$shift['RID']] = $shift['room_name'];
}
}
return $rooms;
}
private function calcSlotSizes($rooms) {
$first_block_start_time = ShiftCalendarRenderer::MINUTES_PER_ROW * floor($this->shiftsFilter->getStartTime() / ShiftCalendarRenderer::MINUTES_PER_ROW);
$blocks_per_slot = ceil(($this->shiftsFilter->getEndTime() - $first_block_start_time) / ShiftCalendarRenderer::MINUTES_PER_ROW);
$parallel_blocks = [];
// initialize $block array
foreach (array_keys($rooms) as $room_id) {
$parallel_blocks[$room_id] = array_fill(0, $blocks_per_slot, 0);
}
// calculate number of parallel shifts in each timeslot for each room
foreach ($this->shifts as $shift) {
$room_id = $shift["RID"];
$shift_blocks = ($shift["end"] - $shift["start"]) / ShiftCalendarRenderer::MINUTES_PER_ROW;
$firstblock = floor(($shift["start"] - $first_block_start_time) / ShiftCalendarRenderer::MINUTES_PER_ROW);
for ($block = $firstblock; $block < $shift_blocks + $firstblock && $block < $blocks_per_slot; $block ++) {
$parallel_blocks[$room_id][$block] ++;
}
}
return array_map('max', $parallel_blocks);
}
}
?>
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