public function processRequest(User $user = NULL)
{
// attempt to parse and load the next image id
$nextImageId = RequestParser::parseRequestParam($_REQUEST, self::GET_PARAM_NEXT_IMAGE_ID, RequestParser::PARAM_FILTER_TYPE_INT);
// if no image was specified, redirect to the start journey view
$startJourneyUrl = UrlFormatter::formatRoutingItemUrl('views/StartJourneyView');
if (!$nextImageId) {
header("Location: {$startJourneyUrl}");
exit;
}
$dbConnection = DbConnectionUtil::getDbConnection();
$nextImageData = ImageData::loadImageDataById($dbConnection, $nextImageId);
if (!$nextImageData) {
header("Location: {$startJourneyUrl}");
exit;
}
parent::displayHeader($user, 'Journey');
// attempt to parse the chosen attribute, if specified add to its tally
if (isset($_GET[self::GET_PARAM_CHOSEN_ATTRIBUTE])) {
$chosenAttribute = $_GET[self::GET_PARAM_CHOSEN_ATTRIBUTE];
// verify the specified chosen attribute is actually an attribute of the chosen image
if ($nextImageData->hasAttribute($chosenAttribute)) {
if (!isset($_SESSION['JOURNEY_ATTRIBUTE_MAP'][$chosenAttribute])) {
$_SESSION['JOURNEY_ATTRIBUTE_MAP'][$chosenAttribute] = 1;
} else {
$_SESSION['JOURNEY_ATTRIBUTE_MAP'][$chosenAttribute]++;
}
}
}
// store the current image id, in the journey session array, check for membership incase of a page re-load
if (!in_array($nextImageId, $_SESSION['JOURNEY_IMAGE_LIST'])) {
$_SESSION['JOURNEY_IMAGE_LIST'][] = $nextImageId;
}
$commonAttributeImageDataTupleList = NULL;
$commonAttributeImageIdList = NULL;
$randomImageDataList = NULL;
// find NUM_SIMILAR_CHOICES common images if possible
$commonAttributeImageIdTupleList = ImageAttribute::loadCommonAttributeImageIdTupleList($dbConnection, $nextImageId, $_SESSION['JOURNEY_IMAGE_LIST']);
//print( "<br/>common id list: " ); print_r( $commonAttributeImageIdTupleList ); print("<br/>" );
shuffle($commonAttributeImageIdTupleList);
$commonAttributeImageIdList = array();
$commonAttributeImageDataTupleList = array();
while (count($commonAttributeImageDataTupleList) < self::NUM_SIMILAR_CHOICES && count($commonAttributeImageIdTupleList) > 0) {
$currentEntry = array();
$commonAttributeImageIdTuple = array_shift($commonAttributeImageIdTupleList);
if (!in_array($commonAttributeImageIdTuple['imageId'], $commonAttributeImageDataTupleList) && !in_array($commonAttributeImageIdTuple['imageId'], $_SESSION['JOURNEY_IMAGE_LIST'])) {
$imageData = ImageData::loadImageDataById($dbConnection, $commonAttributeImageIdTuple['imageId']);
//print( "<br/>Image Data: " ); print_r( $imageData ); print( '<br/>' );
$commonAttributeImageIdList[] = $commonAttributeImageIdTuple['imageId'];
$currentEntry['imageData'] = $imageData;
$currentEntry['attribute'] = $commonAttributeImageIdTuple['attribute'];
$commonAttributeImageDataTupleList[] = $currentEntry;
}
}
//print( "<br/>common map: " ); print_r( $commonAttributeImageDataTupleList ); print("<br/>" );
// add a random image to the choices list, and fill in the gaps if NUM_SIMILAR_CHOICES could not be found, if possible
/*
print( "<br/>commonAttributeImageDataTupleList: " ); print_r( $commonAttributeImageDataTupleList ); print( "<br/>" );
print( "allImageIdList: " ); print_r( $allImageIdList ); print( "<br/>" );
print( "att_map: " ); print_r( $_SESSION['JOURNEY_IMAGE_LIST'] ); print( "<br/>" );
*/
$allImageIdList = ImageData::loadAllImageIdList($dbConnection);
shuffle($allImageIdList);
$randomImageIdList = array();
while (count($randomImageIdList) + count($commonAttributeImageIdList) < self::NUM_SIMILAR_CHOICES + 1 && count($allImageIdList) > 0) {
$imageId = array_shift($allImageIdList);
if ($imageId != $nextImageId && !in_array($imageId, $randomImageIdList) && !in_array($imageId, $commonAttributeImageIdList) && !in_array($imageId, $_SESSION['JOURNEY_IMAGE_LIST'])) {
$randomImageIdList[] = $imageId;
}
}
if (!empty($randomImageIdList)) {
$randomImageDataList = ImageData::loadImageDataListByIdSet($dbConnection, $randomImageIdList);
} else {
$randomImageDataList = array();
}
// If the journey session array size has reached the number of journey steps, then set the is last
// step flag to true, otherwise it should be false
$IS_LAST_STEP = FALSE;
if (count($_SESSION['JOURNEY_IMAGE_LIST']) == self::NUM_JOURNEY_STEPS) {
$IS_LAST_STEP = TRUE;
}
// display the current image
?>
<div class="currentJourneyImageSection">
<img src="<?php
echo UrlFormatter::formatImageUrl($nextImageData->getContentUri());
?>
"/>
</div>
<?php
// if this is not the last step, display further choices
if (!$IS_LAST_STEP) {
?>
<p class="imageGridHeader">Choose Your Journey's Next Step</p>
<div class="centerWrapper">
<div class="imageGrid">
<?php
// list common choices
foreach ($commonAttributeImageDataTupleList as $commonAttributeImageDataTuple) {
$commonImageId = $commonAttributeImageDataTuple['imageData']->getId();
$commonImageThumbUrl = UrlFormatter::formatImageUrl($commonAttributeImageDataTuple['imageData']->getThumbnailUri());
$commonAttribute = $commonAttributeImageDataTuple['attribute'];
$choiceUrl = UrlFormatter::formatRoutingItemUrl('views/JourneyStepView', array(self::GET_PARAM_NEXT_IMAGE_ID => $commonImageId, self::GET_PARAM_CHOSEN_ATTRIBUTE => $commonAttribute));
?>
<a href="<?php
echo $choiceUrl;
?>
"><img src="<?php
echo $commonImageThumbUrl;
?>
"/></a>
<?php
}
// list random choices
foreach ($randomImageDataList as $randomImageData) {
$randomImageId = $randomImageData->getId();
$thumbnailUrl = UrlFormatter::formatImageUrl($randomImageData->getThumbnailUri());
$choiceUrl = UrlFormatter::formatRoutingItemUrl('views/JourneyStepView', array(self::GET_PARAM_NEXT_IMAGE_ID => $randomImageId));
?>
<a href="<?php
echo $choiceUrl;
?>
"><img src="<?php
echo $thumbnailUrl;
?>
"/></a>
<?php
}
?>
</div>
</div>
<?php
} else {
$finishJourneyUrl = UrlFormatter::formatRoutingItemUrl('views/FinishJourneyView');
?>
<div class="finishJourneyButtonSection">
<a class="button" href="<?php
echo $finishJourneyUrl;
?>
">Finish Journey</a>
</div>
<?php
}
parent::displayFooter();
}
public function processRequest(User $user = NULL)
{
parent::displayHeader($user, 'Start Journey');
// TODO query for existing journeys
// query for distinct image attributes
$dbConnection = DbConnectionUtil::getDbConnection();
$distinctAttributeList = ImageAttribute::loadExistingValues($dbConnection);
// randomly select attributes, foreach attribute, retrieve the id of a unique image, store in sourceImageList
shuffle($distinctAttributeList);
$sourceImageIdList = array();
for ($i = 0; $i < self::NUM_START_SELECTION_COUNT && count($distinctAttributeList) > 0; $i++) {
$attribute = array_shift($distinctAttributeList);
$imageIdList = ImageAttribute::loadImageIdListByAttribute($dbConnection, $attribute);
shuffle($imageIdList);
while (count($imageIdList) > 0) {
$imageId = array_shift($imageIdList);
if (!in_array($imageId, $sourceImageIdList)) {
$sourceImageIdList[] = $imageId;
break;
}
}
}
// if the full number of starting images could not be found with distinct attributes, then randomly select more to fill in the gap
if (count($sourceImageIdList) < self::NUM_START_SELECTION_COUNT) {
$allImageIdList = ImageData::loadAllImageIdList($dbConnection);
shuffle($allImageIdList);
while (count($sourceImageIdList) < self::NUM_START_SELECTION_COUNT && count($allImageIdList) > 0) {
$imageId = array_shift($allImageIdList);
if (!in_array($imageId, $sourceImageIdList)) {
$sourceImageIdList[] = $imageId;
}
}
}
// load the randomly selected images
$sourceImageDataList = ImageData::loadImageDataListByIdSet($dbConnection, $sourceImageIdList);
shuffle($sourceImageDataList);
// reset the journey's session data
if (isset($_SESSION['JOURNEY_IMAGE_LIST'])) {
unset($_SESSION['JOURNEY_IMAGE_LIST']);
}
$_SESSION['JOURNEY_IMAGE_LIST'] = array();
if (isset($_SESSION['JOURNEY_ATTRIBUTE_MAP'])) {
unset($_SESSION['JOURNEY_ATTRIBUTE_MAP']);
}
$_SESSION['JOURNEY_ATTRIBUTE_MAP'] = array();
?>
<p class="imageGridHeader">Choose Your Journey's Starting Image</p>
<div class="centerWrapper">
<div class="imageGrid">
<?php
foreach ($sourceImageDataList as $imageData) {
$imageJourneyUrl = UrlFormatter::formatRoutingItemUrl('views/JourneyStepView', array(JourneyStepView::GET_PARAM_NEXT_IMAGE_ID => $imageData->getId()));
$imageThumbUrl = UrlFormatter::formatImageUrl($imageData->getThumbnailUri());
?>
<a href="<?php
echo $imageJourneyUrl;
?>
"> <img src="<?php
echo $imageThumbUrl;
?>
"></a>
<?php
}
?>
</div>
</div>
<?php
// TODO display a list of existing journeys
parent::displayFooter();
}
