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<?php
namespace Engelsystem;
class ShiftCalendarRenderer {
/**
* 15m * 60s/m = 900s
*/
const SECONDS_PER_ROW = 900;
/**
* Height of a block in pixel.
* Do not change - corresponds with theme/css
*/
const BLOCK_HEIGHT = 30;
/**
* Distance between two shifts in pixels
*/
const MARGIN = 5;
private $lanes;
private $shiftsFilter;
private $firstBlockStartTime = null;
private $blocksPerSlot = null;
public function __construct($shifts, ShiftsFilter $shiftsFilter) {
$this->shiftsFilter = $shiftsFilter;
$this->firstBlockStartTime = $this->calcFirstBlockStartTime($shifts);
$this->lanes = $this->assignShiftsToLanes($shifts);
}
/**
* Assigns the shifts to different lanes per room if they collide
*
* @param Shift[] $shifts
* The shifts to assign
*
* @return Returns an array that assigns a room_id to an array of ShiftCalendarLane containing the shifts
*/
private function assignShiftsToLanes($shifts) {
// array that assigns a room id to a list of lanes (per room)
$lanes = [];
foreach ($shifts as $shift) {
$room_id = $shift['RID'];
if (! isset($lanes[$room_id])) {
// initialize room with one lane
$header = Room_name_render([
'RID' => $room_id,
'Name' => $shift['room_name']
]);
$lanes[$room_id] = [
new ShiftCalendarLane($header, $this->getFirstBlockStartTime(), $this->getBlocksPerSlot())
];
}
// Try to add the shift to the existing lanes for this room
$shift_added = false;
foreach ($lanes[$room_id] as $lane) {
$shift_added = $lane->addShift($shift);
if ($shift_added == true) {
break;
}
}
// If all lanes for this room are busy, create a new lane and add shift to it
if ($shift_added == false) {
$newLane = new ShiftCalendarLane("", $this->getFirstBlockStartTime(), $this->getBlocksPerSlot());
if (! $newLane->addShift($shift)) {
engelsystem_error("Unable to add shift to new lane.");
}
$lanes[$room_id][] = $newLane;
}
}
return $lanes;
}
public function getFirstBlockStartTime() {
return $this->firstBlockStartTime;
}
public function getBlocksPerSlot() {
if ($this->blocksPerSlot == null) {
$this->blocksPerSlot = $this->calcBlocksPerSlot();
}
return $this->blocksPerSlot;
}
/**
* Renders the whole calendar
*
* @return the generated html
*/
public function render() {
return div('shift-calendar', [
$this->renderTimeLane(),
$this->renderShiftLanes()
]);
}
/**
* Renders the lanes containing the shifts
*/
private function renderShiftLanes() {
$html = "";
foreach ($this->lanes as $room_lanes) {
foreach ($room_lanes as $lane) {
$html .= $this->renderLane($lane);
}
}
return $html;
}
/**
* Renders a single lane
*
* @param ShiftCalendarLane $lane
* The lane to render
*/
private function renderLane(ShiftCalendarLane $lane) {
$shift_renderer = new ShiftCalendarShiftRenderer();
$html = "";
$rendered_until = $this->getFirstBlockStartTime();
foreach ($lane->getShifts() as $shift) {
while ($rendered_until + ShiftCalendarRenderer::SECONDS_PER_ROW <= $shift['start']) {
$html .= $this->renderTick($rendered_until);
$rendered_until += ShiftCalendarRenderer::SECONDS_PER_ROW;
}
list($shift_height, $shift_html) = $shift_renderer->render($shift);
$html .= $shift_html;
$rendered_until += $shift_height * ShiftCalendarRenderer::SECONDS_PER_ROW;
}
while ($rendered_until <= $this->shiftsFilter->getEndTime()) {
$html .= $this->renderTick($rendered_until);
$rendered_until += ShiftCalendarRenderer::SECONDS_PER_ROW;
}
return div('lane', [
div('header', $lane->getHeader()),
$html
]);
}
/**
* Renders a tick/block for given time
*
* @param int $time
* unix timestamp
* @param boolean $label
* Should time labels be generated?
* @return rendered tick html
*/
private function renderTick($time, $label = false) {
if ($time % (24 * 60 * 60) == 23 * 60 * 60) {
if (! $label) {
return div('tick day');
}
return div('tick day', [
date('Y-m-d<b\r />H:i', $time)
]);
} elseif ($time % (60 * 60) == 0) {
if (! $label) {
return div('tick hour');
}
return div('tick hour', [
date('H:i', $time)
]);
}
return div('tick');
}
/**
* Renders the left time lane including hour/day ticks
*/
private function renderTimeLane() {
$time_slot = [
div('header', [
_("Time")
])
];
for ($block = 0; $block < $this->getBlocksPerSlot(); $block ++) {
$thistime = $this->getFirstBlockStartTime() + ($block * ShiftCalendarRenderer::SECONDS_PER_ROW);
$time_slot[] = $this->renderTick($thistime, true);
}
return div('lane time', $time_slot);
}
private function calcFirstBlockStartTime($shifts) {
$start_time = $this->shiftsFilter->getEndTime();
foreach ($shifts as $shift) {
if ($shift['start'] < $start_time) {
$start_time = $shift['start'];
}
}
return ShiftCalendarRenderer::SECONDS_PER_ROW * floor(($start_time - 60 * 60) / ShiftCalendarRenderer::SECONDS_PER_ROW);
}
private function calcBlocksPerSlot() {
return ceil(($this->shiftsFilter->getEndTime() - $this->getFirstBlockStartTime()) / ShiftCalendarRenderer::SECONDS_PER_ROW);
}
}
?>
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