<?php
namespace TIG\OC\Profiles;
require_once PUBLICROOT . 'includes/functions/aws.inc';
/**
* An original post of text, with or without an image
*/
class ContentPost extends Post
{
/**************************************************************************
* Configurable Constants
**************************************************************************/
/**
* Images are saved here
*/
const IMAGESUBPATH = 'profiles/content/image-posts/';
const AWSBUCKET = 'tigfiles';
/**************************************************************************
* Program Constants
**************************************************************************/
/**
* The field is required and empty
*/
const ERROR_MISSING = 1;
/**
* The image is not a supported file format
*/
const ERROR_FORMATINVALID = 2;
/**************************************************************************
* Properties
**************************************************************************/
/**
* The name of the file if an image is associated with this post
* @var type
*/
private $imageFilename;
/**************************************************************************
* Constructor
**************************************************************************/
protected function __construct($row)
{
$this->imageFilename = $row['ContentPostImageFilename'];
parent::__construct($row);
}
/**************************************************************************
* CRUD Functions
**************************************************************************/
/**
* Stores a new post
*
* @param int $userID The ID of the user that created this post
* @param int $languageID The language this post is in
* @param string $text The thought the user is sharing
* @return int The ID of the newly created post
*/
public static function create($userID, $languageID, $text)
{
$newPostID = parent::create($userID, $languageID, $text);
// Do nothing else - All the information for a content post is contained
// in the Post.
return $newPostID;
}
/**
* Permanently removes this post AND all associated reposts
*
* WARNING: Since all reposts depend on the content post, calling this
* function will delete them too.
*/
public function delete()
{
$relatedPosts = $this->getRelatedPosts() ;
foreach ($relatedPosts as $post) {
$post->delete();
}
if ($this->imageFilename) {
// Remove Local Image
$localPath = $this->getLocalImagePath($this->imageFilename);
if (is_file($localPath)) {
unlink($localPath);
}
// Remove from AWS
$amazonRoute = $this->getAmazonRoute($this->imageFilename);
AWSCloudDelete(self::AWSBUCKET, $amazonRoute);
}
parent::delete();
}
private function getLocalImagePath($filename)
{
return IMAGEROOT . self::IMAGESUBPATH . $filename;
}
private function getAmazonRoute($filename)
{
return '/images/' . self::IMAGESUBPATH . $filename;
}
/**************************************************************************
* Getters \ Setters \ Checkers
**************************************************************************/
public function saveImageFile($filesArrayElement)
{
// Determine Filename and Path
$extension = self::getImageExtension($filesArrayElement['tmp_name']);
$filename = $this->id . "." .$extension;
$localPath = $this->getLocalImagePath($filename);
// Save Locally
move_uploaded_file($filesArrayElement['tmp_name'], $localPath);
// Upload to AWS
$amazonRoute = $this->getAmazonRoute($filename);
AWSCloud(self::AWSBUCKET, $amazonRoute, $localPath);
safe_dbwrite("
UPDATE tig.ProfilePosts
SET ContentPostImageFilename = '" . mysqlescape($filename) . "'
WHERE ID = $this->id
");
}
public static function checkImageFile($filesArrayElement)
{
// Validate File Properties
$uploadValidator = new \TIG\Common\UploadValidator();
$uploadValidator->setValidExtensions(array('jpg', 'jpeg', 'png', 'gif'));
$uploadError = $uploadValidator->validate($filesArrayElement);
switch ($uploadError) {
case \TIG\Common\UploadValidator::MISSING:
return self::ERROR_MISSING;
case \TIG\Common\UploadValidator::EXTENSIONINVALID:
return self::ERROR_FORMATINVALID;
}
// Validate Image Properties
$imageValidator = new \TIG\Common\ImageValidator();
$validImageTypes = array(
IMAGETYPE_JPEG,
IMAGETYPE_PNG,
IMAGETYPE_GIF
);
$imageValidator->setValidImageTypes($validImageTypes);
$imageError = $imageValidator->validate($filesArrayElement['tmp_name']);
switch ($imageError) {
case \TIG\Common\ImageValidator::UNREADABLE:
return self::ERROR_MISSING;
case \TIG\Common\ImageValidator::TYPEINVALID:
return self::ERROR_FORMATINVALID;
}
return false;
}
public function getImageUrl()
{
if (!$this->imageFilename) {
return;
}
return "http://acdn.tigurl.org/images/" . self::IMAGESUBPATH . $this->imageFilename;
}
/**************************************************************************
* Helpers
**************************************************************************/
private static function getImageExtension($file)
{
$imageType = exif_imagetype($file);
// Is it an image?
if ($imageType === false) {
throw new \InvalidArgumentException('File is not an image.');
}
switch ($imageType) {
case IMAGETYPE_GIF:
return 'gif';
case IMAGETYPE_JPEG:
return 'jpg';
case IMAGETYPE_PNG:
return 'png';
default:
throw new \Exception('Unacceptable image type: ' . $imageType);
}
}
/**************************************************************************
* Required by Post
**************************************************************************/
public function getHtmlizedText()
{
return htmlspecialchars($this->text);
}
public function isRepostableByUser($userID)
{
if (!filter_var($userID, FILTER_VALIDATE_INT)) {
throw new \InvalidArgumentException("Invalid user ID: $userID");
}
// Users cannot repost their own post
if ($this->userID == $userID) {
return false;
}
return true;
}
public function repost($userID, $languageID, $text)
{
return ContentRepost::create($userID, $languageID, $text, $this->id, $this->id);
}
public function getRelatedPosts()
{
return ContentRepost::readByContentPostID($this->id);
}
}
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