mirror of
https://github.com/pierre42100/ComunicAPI
synced 2024-12-28 14:38:59 +00:00
785 lines
22 KiB
PHP
785 lines
22 KiB
PHP
<?php
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/**
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* Posts management class
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*
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* @author Pierre HUBERT
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*/
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class Posts {
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/**
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* Visibility levels
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*/
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//Posts that can be seen by anyone
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const VISIBILITY_PUBLIC = 1;
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//Posts that can be seen by the friends of the user
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const VISIBILITY_FRIENDS = 2;
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//Posts that can be seen by the user only
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const VISIBILITY_USER = 3;
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/**
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* Access level to a post
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*/
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//When a user can't access to a post
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const NO_ACCESS = 0;
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//When a user can see a post and perform basic actions such as liking
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const BASIC_ACCESS = 1;
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//When a user has intermediate access to the post (delete post)
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const INTERMEDIATE_ACCESS = 2;
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//When a user has a full access to the post
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const FULL_ACCESS = 3;
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/**
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* Kinds of posts page
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*/
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//Post on user page
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const PAGE_KIND_USER = "user";
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const PAGE_KIND_GROUP = "group";
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/**
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* Kinds of post
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*/
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const POST_KIND_TEXT = "text";
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const POST_KIND_IMAGE = "image";
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const POST_KIND_WEBLINK = "weblink";
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const POST_KIND_PDF = "pdf";
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const POST_KIND_MOVIE = "movie";
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const POST_KIND_COUNTDOWN = "countdown";
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const POST_KIND_SURVEY = "survey";
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const POST_KIND_YOUTUBE = "youtube";
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/**
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* Table informations
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*/
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//Name of the table
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const TABLE_NAME = "texte";
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//Translation of posts types between the API language and the database structure
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const POSTS_DB_TYPES = array(
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"texte" => Posts::POST_KIND_TEXT,
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"image" => Posts::POST_KIND_IMAGE,
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"webpage_link" => Posts::POST_KIND_WEBLINK,
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"pdf" => Posts::POST_KIND_PDF,
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"video" => Posts::POST_KIND_MOVIE,
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"count_down" => Posts::POST_KIND_COUNTDOWN,
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"sondage" => Posts::POST_KIND_SURVEY,
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"youtube" => Posts::POST_KIND_YOUTUBE
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);
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/**
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* Get the visibility level of a user other another user
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*
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* @param int $userID The ID of the user to fetch
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* @param int $targetID The ID of the user target
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* @return int Visibility level
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*/
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public function getUserVisibility(int $userID, int $targetID) : int {
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//If the user making the request and the target user are the same
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if($userID == $targetID)
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return $this::VISIBILITY_USER;
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//Check user if is signed out
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if($userID == 0)
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return $this::VISIBILITY_PUBLIC;
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//Check if the two users are friends or not
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if(CS::get()->components->friends->are_friend($userID, $targetID))
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//Users are friends
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return $this::VISIBILITY_FRIENDS;
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else
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//Users are not friend
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return $this::VISIBILITY_PUBLIC;
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}
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/**
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* Get a list of post of a user
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*
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* @param int $userID The ID of the user making the request
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* @param int $targetID The ID of the target user
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* @param int $startPoint The startpoint for the request (0 stands for none)
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* @param int $limit The maximum number of messages to fetch
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* @return array The list of posts of the user
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*/
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public function getUserPosts(int $userID, int $targetID, int $startPoint = 0, int $limit = 10) : array {
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//Check the value of limit (security)
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if($limit < 1){
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throw new Exception("The limit of the query must absolutly be positive !");
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}
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//Get user visibility level
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$visibilityLevel = $this->getUserVisibility($userID, $targetID);
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//Prepare the request on the database
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$conditions = "WHERE ID_personne = ? AND group_id = 0 AND (";
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$dataConds = array($targetID);
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//Add the visibility level conditions
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$conditions .= "(niveau_visibilite <= ?)";
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$dataConds[] = $visibilityLevel;
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//If user is signed in, include all the posts that he has created
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if($userID > 0){
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$conditions .= " OR (ID_amis = ?) ";
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$dataConds[] = $userID;
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}
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//Close permissions conditions
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$conditions .= ")";
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//Add startpoint condition if required (and get older messages)
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if($startPoint != 0){
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$conditions .= " AND ID <= ? ";
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$dataConds[] = $startPoint;
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}
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//Specify order and limit
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$conditions.= " ORDER BY ID DESC LIMIT ".$limit;
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//Perform the request
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$list = CS::get()->db->select(
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$this::TABLE_NAME,
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$conditions,
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$dataConds
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);
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//Check if the user allow comments on his page or not
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$getComments = CS::get()->components->user->allowComments($targetID);
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//Parse and return posts
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return $this->processGetMultiple($list, $getComments);
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}
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/**
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* Get the list of latest posts for a user
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*
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* @param int $userID The ID of the user requesting its list of posts
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* @param int $startPoint The startpoint of the research (default: 0 = none)
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* @param int $limit The limit of the research (default: 10)
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* @return array The list of newest posts for the user
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*/
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public function get_latest(int $userID, int $startPoint = 0, int $limit = 10) : array {
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//Check the value of limit (security)
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if($limit < 1){
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throw new Exception("The limit of the query must absolutly be positive !");
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}
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//Arbitrary visibility level
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$visibilityLevel = self::VISIBILITY_FRIENDS;
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//Get the list of friends of the user
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$friendsList = components()->friends->getList($userID, -1, TRUE);
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//Prepare the request on the database
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//Add the visibility level conditions
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$conditions = "WHERE niveau_visibilite <= ? AND (ID_personne = ?";
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$dataConds = array($visibilityLevel, $userID);
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//Process the list of friends of the user
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foreach($friendsList as $friend){
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$friendID = $friend->getFriendID();
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$conditions .= " OR (ID_personne = ? AND group_id = 0)";
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$dataConds[] = $friendID;
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}
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//Close user list conditions
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$conditions .= ")";
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//Add startpoint condition if required (and get older messages)
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if($startPoint != 0){
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$conditions .= " AND ID <= ? ";
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$dataConds[] = $startPoint;
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}
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//Specify order and limit
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$conditions.= " ORDER BY ID DESC LIMIT ".$limit;
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//Perform the request
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$list = CS::get()->db->select(
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$this::TABLE_NAME,
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$conditions,
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$dataConds
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);
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//Parse the list of posts
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$posts = array();
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foreach($list as $row){
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//Check if the user allow the comments
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$allow_comments = CS::get()->components->user->allowComments($row["ID_personne"]);
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//Parse post informations
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$posts[] = $this->dbToPost($row, $allow_comments);
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}
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//Return the list of posts
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return $posts;
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}
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/**
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* Get the entire list of posts of a user, including posts made by the
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* user on other page plus the posts of his friend on his page
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*
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* This function does not take care of visibility level, and does not admit
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* any kind of limit
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*
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* @param int $userID The ID of the target user
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* @param bool $load_comments Specify whether the comments should be also loaded
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* or not (default: FALSE)
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* @return array The list of posts
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*/
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public function getUserEntirePostsList(int $userID, bool $load_comments = FALSE) : array {
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//Prepare database request
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$conditions = "WHERE ID_personne = ? OR ID_amis = ?";
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$dataConds = array($userID, $userID);
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//Perform the request
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$list = CS::get()->db->select(
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$this::TABLE_NAME,
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$conditions,
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$dataConds
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);
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//Parse and return posts (do not load comments)
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return $this->processGetMultiple($list, $load_comments);
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}
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/**
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* Get the entire list of posts that uses a movie
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*
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* This function does not take care of visibility level, and does not admit
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* any kind of limit
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*
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* @param int $movieID The ID of the target movie
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* @return array The list of posts
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*/
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public function getPostsForMovie(int $movieID) : array {
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//Security feature
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if($movieID < 1)
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return array();
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//Prepare database request
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$conditions = "WHERE idvideo = ?";
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$dataConds = array($movieID);
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//Perform the request
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$list = CS::get()->db->select(
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$this::TABLE_NAME,
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$conditions,
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$dataConds
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);
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//Parse and return posts (do not load comments)
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return $this->processGetMultiple($list, FALSE);
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}
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/**
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* Check whether a post exists or not
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*
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* @param int $postID The ID of the post to check
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* @return bool TRUE if the post exists / FALSE else
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*/
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public function exist(int $postID) : bool {
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//Perform a request on the database
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return CS::get()->db->count($this::TABLE_NAME, "WHERE ID = ?", array($postID)) != 0;
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}
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/**
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* Get the access level of a user about a post
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*
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* @param int $postID The ID of the post to get
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* @param int $userID The ID of the user to check
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* @return int The access level over the post
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*/
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public function access_level(int $postID, int $userID) : int {
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//Get informations about the post
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$post_infos = $this->get_single($postID);
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return $this->access_level_with_infos($post_infos, $userID);
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}
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/**
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* Get the access level of a user about a post
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*
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* This function requires the informations about the post
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*
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* @param Post $post_info Informations about the post
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* @param int $userID The ID of the user to check
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* @return int The access level over the post
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*/
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public function access_level_with_infos(Post $post_info, int $userID) : int {
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//Check the validity of the Post object
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if(!$post_info->isValid())
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return $this::NO_ACCESS;
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//Check if the user is the owner of the post
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if($post_info->get_userID() == $userID)
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return $this::FULL_ACCESS;
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//Special checks if the posts belongs to a user's page
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if($post_info->get_kind_page() == Posts::PAGE_KIND_USER){
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//Check if the post was made on the user page
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if($post_info->get_user_page_id() == $userID)
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return $this::INTERMEDIATE_ACCESS;
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//Check if the post is private
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if($post_info->get_visibility_level() == $this::VISIBILITY_USER)
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return $this::NO_ACCESS;
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//Check if the post is for friends only
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if($post_info->get_visibility_level() == $this::VISIBILITY_FRIENDS){
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//Check if user is signed in
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if($userID == 0)
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return $this::NO_ACCESS;
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//Check if this user and the owner of the page are friends or not
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else if(!CS::get()->components->friends->are_friend($userID, $post_info->get_user_page_id()))
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return $this::NO_ACCESS;
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else
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//User can access the post
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return $this::BASIC_ACCESS;
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}
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//Check if the post is public
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if($post_info->get_visibility_level() == $this::VISIBILITY_PUBLIC){
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//Check if the two personns are friend
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if($userID != 0){
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if(CS::get()->components->friends->are_friend($userID, $post_info->get_user_page_id()))
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return $this::BASIC_ACCESS;
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}
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//Get user visibility level
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$visibilityLevel = CS::get()->components->user->getVisibility($post_info->get_user_page_id());
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//If the page is open, access is free
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if($visibilityLevel == UserComponent::USER_PAGE_OPEN)
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return $this::BASIC_ACCESS;
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//Else check if the user is signed in and the page is public
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else if($userID != 0 AND $visibilityLevel == UserComponent::USER_PAGE_PUBLIC)
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return $this::BASIC_ACCESS;
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else
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return $this::NO_ACCESS;
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}
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}
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//Checks if the posts belongs to a group's page
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if($post_info->get_kind_page() == Posts::PAGE_KIND_GROUP){
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//Get the access level of the user over the group
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$access_level = components()->groups->getMembershipLevel($userID, $post_info->get_group_id());
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//Moderators and administrators can delete all the posts of the group
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if($access_level < GroupMember::MEMBER)
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return $this::INTERMEDIATE_ACCESS;
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//Members of a group can see all the posts of the group
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if($access_level == GroupMember::MEMBER)
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return $this::BASIC_ACCESS;
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//Check if the post is public or not
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if($post_info->get_visibility_level() != Posts::VISIBILITY_PUBLIC)
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return $this::NO_ACCESS;
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//Check if the group is open or not
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if(!components()->groups->is_open($post_info->get_group_id()))
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return $this::NO_ACCESS;
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// Post public + open group > basic access
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return $this::BASIC_ACCESS;
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}
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//Not implemented
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return $this::NO_ACCESS;
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}
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/**
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* Create a new post
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*
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* @param Post $post Information about the post to create
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* @return int The ID of the created post or -1 in case of failure
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*/
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public function create(Post $post) : int {
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//Generate new post informations
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//Get the corresponding kind of post for the database
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$post_kind_db = array_flip($this::POSTS_DB_TYPES)[$post->get_kind()];
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//Generate valid date form for time_end value
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if($post->get_time_end() != 0){
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$date_end = date("d/m/Y", $post->get_time_end());
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$array_date_end = explode("/", $date_end);
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//Save the values
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$day_end = $array_date_end[0];
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$month_end = $array_date_end[1];
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$year_end = $array_date_end[2];
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$time_end = $post->get_time_end();
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}
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//Process user page posts
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if($post->get_kind_page() == $this::PAGE_KIND_USER){
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//Determine who is creating the post
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$post_user_id = $post->get_kind_page_id();
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$post_friend_id = $post->get_kind_page_id() == $post->get_userID() ? 0 : $post->get_userID();
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$post_group_id = 0;
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}
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else if($post->get_kind_page() == $this::PAGE_KIND_GROUP){
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$post_user_id = $post->get_userID();
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$post_friend_id = 0;
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$post_group_id = $post->get_kind_page_id();
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}
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else {
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throw new Exception("Unsupported kind of page : ".$post->get_kind_page()." !");
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}
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//Generate database entry
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$data = array(
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"ID_personne" => $post_user_id,
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"ID_amis" => $post_friend_id,
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"group_id" => $post_group_id,
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"date_envoi" => mysql_date(),
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"time_insert" => time(),
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"texte" => $post->has_content() ? $post->get_content() : "",
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"niveau_visibilite" => $post->get_visibility_level(),
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"type" => $post_kind_db,
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//Generic files informations
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"size" => $post->has_file_size() ? $post->get_file_size() : null,
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"file_type" => $post->has_file_type() ? $post->get_file_type() : null,
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"path" => $post->has_file_path() ? $post->get_file_path() : null,
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//Movie posts
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"idvideo" => $post->has_movie_id() ? $post->get_movie_id() : null,
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//Countdown timer
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"jour_fin" => isset($day_end) ? $day_end : null,
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"mois_fin" => isset($month_end) ? $month_end : null,
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"annee_fin" => isset($year_end) ? $year_end : null,
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"time_end" => isset($time_end) ? $time_end : null,
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//Weblink page
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"url_page" => $post->has_link_url() ? $post->get_link_url() : null,
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"titre_page" => $post->has_link_title() ? $post->get_link_title() : null,
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"description_page" => $post->has_link_description() ? $post->get_link_description() : null,
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"image_page" => $post->has_link_image() ? $post->get_link_image() : null
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);
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//Insert the post
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if(!CS::get()->db->addLine($this::TABLE_NAME, $data))
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return -1;
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//Get post ID
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$postID = CS::get()->db->getLastInsertedID();
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//Create the survey if required
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if($post->get_kind() == $this::POST_KIND_SURVEY){
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//Complete the request
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$survey = $post->get_survey();
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$survey->set_postID($postID);
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$survey->set_userID($post->get_userID());
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components()->survey->create($survey);
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}
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return $postID;
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}
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/**
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* Update the visibility level of a post
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*
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* @param int $postID The ID of the post to update
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* @param int $level The new level for the post
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* @return bool TRUE in case of success / FALSE in case of failure
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*/
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public function update_level(int $postID, int $level) : bool {
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//Set the new values
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$new_values = array(
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"niveau_visibilite" => $level
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);
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//Perform update
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|
return $this->perform_update($postID, $new_values);
|
|
}
|
|
|
|
/**
|
|
* Update the content of a post
|
|
*
|
|
* @param int $postID The ID of the post to update
|
|
* @param string $new_content The new content for the post
|
|
* @return bool TRUE in case of success / FALSE else
|
|
*/
|
|
public function update_content(int $postID, string $new_content) : bool {
|
|
|
|
//Make a request on the database
|
|
$new_values = array(
|
|
"texte" => $new_content
|
|
);
|
|
|
|
//Perform update
|
|
return $this->perform_update($postID, $new_values);
|
|
}
|
|
|
|
/**
|
|
* Perform the update of some informations of a post
|
|
*
|
|
* @param int $postID The ID of the post to update
|
|
* @param array $new_values The informations to change in the post
|
|
* @return bool TRUE for a success / FALSE for a failure
|
|
*/
|
|
private function perform_update(int $postID, array $new_values) : bool {
|
|
|
|
//Set the conditions
|
|
$conditions = "ID = ?";
|
|
$condValues = array($postID);
|
|
|
|
//Perform the request
|
|
return CS::get()->db->updateDB($this::TABLE_NAME, $conditions, $new_values, $condValues);
|
|
}
|
|
|
|
/**
|
|
* Delete a post
|
|
*
|
|
* @param int $postID The ID of the post to delete
|
|
* @return bool TRUE for a success / FALSE for a failure
|
|
*/
|
|
public function delete(int $postID) : bool {
|
|
|
|
//Get informations about the post
|
|
$post_info = $this->get_single($postID);
|
|
|
|
//Check if we didn't get informations about the post
|
|
if(!$post_info->isValid())
|
|
return false;
|
|
|
|
//Delete the likes associated to the post
|
|
if(!components()->likes->delete_all($postID, Likes::LIKE_POST))
|
|
return false;
|
|
|
|
//Delete all the comments associated to the post
|
|
if(!components()->comments->delete_all($postID))
|
|
return false;
|
|
|
|
//Delete the associated image or PDF (if any)
|
|
if($post_info->get_kind() == $this::POST_KIND_IMAGE
|
|
|| $post_info->get_kind() == $this::POST_KIND_PDF){
|
|
|
|
//Determine file path
|
|
$file_path = path_user_data($post_info->get_file_path(), true);
|
|
|
|
//Check if the file exists
|
|
if(file_exists($file_path)){
|
|
|
|
//Try to delete it
|
|
if(!unlink($file_path))
|
|
return false;
|
|
}
|
|
}
|
|
|
|
//Delete the associated survey (if any)
|
|
if($post_info->get_kind() == $this::POST_KIND_SURVEY){
|
|
|
|
//Check the post has an associated survey
|
|
if(components()->survey->exists($postID)){
|
|
|
|
//Try to delete survey
|
|
if(!components()->survey->delete($postID))
|
|
return false;
|
|
}
|
|
|
|
}
|
|
|
|
//Delete the post
|
|
return CS::get()->db->deleteEntry($this::TABLE_NAME, "ID = ?", array($postID));
|
|
}
|
|
|
|
/**
|
|
* Fetch a single post from the database
|
|
*
|
|
* @param int $postID The ID of the post to get
|
|
* @param bool $load_comments Specify if the comments should be loaded or not
|
|
* (no by default)
|
|
* @return Post Information about the post / invalid Post object
|
|
* if the post was not found
|
|
*/
|
|
public function get_single(int $postID, bool $load_comments = false) : Post {
|
|
|
|
//Perform a request on the database
|
|
$conditions = "WHERE ID = ?";
|
|
$values = array($postID);
|
|
$result = CS::get()->db->select($this::TABLE_NAME, $conditions, $values);
|
|
|
|
//Check if we got a response
|
|
if(count($result) == 0)
|
|
return new Post(); //Empty array = error
|
|
|
|
//Return parsed response
|
|
return $this->dbToPost($result[0], $load_comments);
|
|
|
|
}
|
|
|
|
/**
|
|
* Delete all the posts of a user
|
|
*
|
|
* @param int $userID The ID of the target user
|
|
* @return bool TRUE for a success / FALSE else
|
|
*/
|
|
public function deleteAllUser(int $userID) : bool {
|
|
|
|
//Get the list of posts of the user
|
|
$posts = $this->getUserEntirePostsList($userID);
|
|
|
|
//Delete the list of posts
|
|
foreach($posts as $post){
|
|
|
|
//Delete the posts
|
|
if(!$this->delete($post->get_id()))
|
|
return FALSE;
|
|
|
|
}
|
|
|
|
//Success
|
|
return TRUE;
|
|
}
|
|
|
|
/**
|
|
* Delete all the posts using a specified movie
|
|
*
|
|
* @param int $movieID The ID of the target movie
|
|
* @return bool TRUE for a success / FALSE else
|
|
*/
|
|
public function deleteAllWithMovie(int $movieID) : bool {
|
|
|
|
//Get the list of posts of the user
|
|
$posts = $this->getPostsForMovie($movieID);
|
|
|
|
//Delete the list of posts
|
|
foreach($posts as $post){
|
|
|
|
//Delete the posts
|
|
if(!$this->delete($post->get_id()))
|
|
return FALSE;
|
|
|
|
}
|
|
|
|
//Success
|
|
return TRUE;
|
|
}
|
|
|
|
/**
|
|
* Process processing of multiples posts entries in database
|
|
*
|
|
* @param array $entries Entries in the database
|
|
* @param bool $load_comments Specify whether the comments should
|
|
* be loaded or not
|
|
* @return array The list of parsed posts
|
|
*/
|
|
private function processGetMultiple(array $entries, bool $load_comments) : array {
|
|
|
|
//Parse posts
|
|
$posts = array();
|
|
foreach($entries as $post){
|
|
$posts[] = $this->dbToPost($post, $load_comments);
|
|
}
|
|
|
|
return $posts;
|
|
}
|
|
|
|
/**
|
|
* Turn a database entry into a Post object
|
|
*
|
|
* @param array $entry The database entry to parse
|
|
* @param bool $load_comments Load the comments, if required
|
|
* @return Post Generated Post object
|
|
*/
|
|
private function dbToPost(array $entry, bool $load_comments) : Post {
|
|
|
|
$post = new Post();
|
|
|
|
//General information
|
|
$post->set_id($entry["ID"]);
|
|
$post->set_userID($entry["ID_amis"] == 0 ? $entry["ID_personne"] : $entry["ID_amis"]);
|
|
|
|
//Determine the kind of target page and its ID
|
|
$post->set_user_page_id($entry["ID_personne"]);
|
|
$post->set_group_id($entry["group_id"]);
|
|
|
|
$post->set_time_sent($entry["time_insert"] == null ? strtotime($entry["date_envoi"]) : $entry["time_insert"]);
|
|
$post->set_content($entry["texte"]);
|
|
$post->set_visibility_level($entry["niveau_visibilite"]);
|
|
$post->set_kind($this::POSTS_DB_TYPES[$entry["type"]]);
|
|
|
|
//File specific
|
|
$post->set_file_size($entry["size"] != null ? $entry["size"] : -1);
|
|
$post->set_file_type($entry["file_type"] != null ? $entry["file_type"] : "");
|
|
$post->set_file_path($entry["path"] != null ? $entry["path"] : "");
|
|
$post->set_file_path_url($post->has_file_path() ? path_user_data($post->get_file_path()) : "");
|
|
|
|
//Movie specific
|
|
$post->set_movie_id($entry["idvideo"] == null ? -1 : $entry["idvideo"]);
|
|
if($post->has_movie_id())
|
|
$post->set_movie(components()->movies->get_info($post->get_movie_id()));
|
|
|
|
|
|
//Countdown timer - specific
|
|
if($entry['annee_fin'] != 0)
|
|
$post->set_time_end(strtotime($entry["annee_fin"]."/".$entry['mois_fin']."/".$entry["jour_fin"]));
|
|
if($entry["time_end"] != 0)
|
|
$post->set_time_end($entry["time_end"]);
|
|
|
|
//Web link
|
|
$post->set_link_url($entry["url_page"] != null ? $entry["url_page"] : "");
|
|
$post->set_link_title($entry["titre_page"] != null ? $entry["titre_page"] : "");
|
|
$post->set_link_description($entry["description_page"] != null ? $entry["description_page"] : "");
|
|
$post->set_link_image($entry["image_page"] != null ? $entry["image_page"] : "");
|
|
|
|
|
|
//Survey specific
|
|
if($post->get_kind() == "survey")
|
|
$post->set_survey(components()->survey->get_infos($post->get_id()));
|
|
|
|
|
|
//Get information about likes
|
|
$post->set_likes(components()->likes->count($post->get_id(), Likes::LIKE_POST));
|
|
$post->set_userLike(user_signed_in() ? components()->likes->is_liking(userID, $post->get_id(), Likes::LIKE_POST) : false);
|
|
|
|
//Load comments, if requested
|
|
if($load_comments)
|
|
$post->set_comments(components()->comments->get($post->get_id()));
|
|
|
|
return $post;
|
|
|
|
}
|
|
}
|
|
|
|
//Register component
|
|
Components::register("posts", new Posts()); |