<?php
ini_set('display_errors', 1);
ini_set('display_startup_errors', 1);
error_reporting(E_ALL);
$root = realpath($_SERVER["DOCUMENT_ROOT"]);
// session_start();
require "$root/database/credentials.php";
// Connect the database
try {
	$db = new PDO("mysql:host=$host;dbname=$database;charset=utf8", 
		$user, 
		$password, 
		array(PDO::ATTR_ERRMODE => PDO::ERRMODE_EXCEPTION
		));
} catch (Exception $e) {
	die("Error : ".$e->getMessage());
}

class Article
{
    public $id = null;
    public $publication_date = null;
    public $modification_date = null;
    public $title = null;
    public $summary = null;
    public $content = null;
    public $author_id = null;

    public function __construct($data=array()) {
        if (isset($data['id'])) $this->id = (int) $data['id'];
        if (isset($data['publication_date'])) $this->publication_date = (int) $data['publication_date'];
        if (isset($data['modification_date'])) $this->modification_date = (int) $data['modification_date'];
        if (isset($data['title'])) $this->title = preg_replace ( "/[^\.\,\-\_\'\"\@\?\!\:\$ a-zA-Z0-9()]/", "", $data['title'] );
        if (isset($data['summary'])) $this->summary = preg_replace ( "/[^\.\,\-\_\'\"\@\?\!\:\$ a-zA-Z0-9()]/", "", $data['summary'] );
        if (isset($data['content'])) $this->content = $data['content'];
        global $db;
        $req = $db->prepare('SELECT id FROM authors WHERE username=:username');
        $req->execute(array(
            "username"=>$_SESSION['username']
        ));
        if ($data = $req->fetch()) {
            if (isset($data['id'])) 
                $this->author_id = $data['id'];
        }
    }
    
    public function storeFormValues($params) {
        $this->__construct($params);
        if (isset($params['publication_date'])) {
            $publication_date = explode('-', $params['publication_date']);
            if(count($publication_date) == 3) {
                list($y, $m, $d) = $publication_date;
                $this->publication_date = mktime(0, 0, 0, $m, $d, $y);
            }
        }
    }

    public static function getById($id)
    {
        global $db;
        $req = $db->prepare('SELECT *, UNIX_TIMESTAMP(created_on) AS publication_date FROM articles WHERE id=:id');
        $req->execute(array(
            "id"=>$id
        ));
        if ($data = $req->fetch()) {
            return new Article($data);
        }
    }

    public static function getList($num = 1000000) {
        global $db;
        $req = $db->prepare('SELECT *, UNIX_TIMESTAMP(created_on) AS publication_date FROM articles ORDER BY created_on DESC LIMIT 5');
        $req->execute();//array(
            // "num_rows"=>$num
        // ));
        $list = array();
        while ($row = $req->fetch()) {
            $article = new Article($row);
            $list[] = $article;
            // print_r($article);
        }
        return $list;
    }

    public function insert() {
        if (! is_null($this->id)) {
            trigger_error("Article::insert(): Attempt to insert an Article object that already has its ID property set (to $this->id).", E_USER_ERROR);
        }
        global $db;
        $req = $db->prepare('INSERT INTO articles (created_on, modified_on, title, summary, content, article_by) VALUES (FROM_UNIXTIME(:created_on), FROM_UNIXTIME(:modified_on), :title, :summary, :content, :article_by)');
        $req->execute(array(
            "created_on"=>$this->publication_date,
            "modified_on"=>$this->modification_date,
            "title"=>$this->title,
            "summary"=>$this->summary,
            "content"=>$this->content,
            "article_by"=>$this->author_id
        ));
    }

    public function update() {
        if (is_null($this->id)) 
        {
            trigger_error("Article::update(): Attempt to update an Article object that does not have its ID property set.", E_USER_ERROR);
        }
        global $db;
        $req = $db->prepare('UPDATE article SET modification_date=FROM_UNIXTIMESTAMP(:modification_date), title=:title, summary=:summary, content=:content WHERE id=:id');
        $req->execute(array(
            "modification_date"=>$this->modification_date,
            "title"=>$this->title,
            "summary"=>$this->summary,
            "content"=>$this->content,
            "id"=>$this->id
        ));
    }

    public function delete() {
        if (is_null($this->id))
        {
            trigger_error( "Article::delete(): Attempt to delete an Article object that does not have its ID property set.", E_USER_ERROR);
        }
        global $db;
        $req = $db->prepare('DELETE FROM articles WHERE id=:id LIMIT 1');
        $req->execute(array(
            "id"=>$this->id
        ));
    }
}

?>