<?php
/**
 * Buildable entity file.
 *
 * Creates the entity and makes it available.
 *
 * @author Iñigo Valentin <i@inigovalentin.com>
 * @license https://www.gnu.org/licenses/gpl-3.0.en.html GNU General Public License V3
 * @package SWDB
 */

require_once(PATH::ENTITY . "Entity.php");

/**
 * Buildable.
 *
 * Represents any of the available buildings in the game.
 * 
 * Buildings that can be built and leveled up are not considered buildables, but {@link Decorative}.
 * It does not represent a building owned by the player.
 *
 * @category Entity
 */
class Buildable extends Entity{

    /**
     * @var int Buildable ID.
     */
    private $id;

    /**
     * @var string Buildable name.
     */
    private $name;

    /**
     * @var string Buildable description.
     */
    private $description;

    /**
     * Constructor.
     *
     * Searches the database and retrieves the information about the
     * building, populating it and it's items.
     *
     * @param int $id Buildable identifier.
     */
    public function __construct($id){

        $statement = get_context()->get_db()->prepare("
          SELECT
            id,
            name,
            description
          FROM buildable
           WHERE id = :id;
        ");
        $statement->bindValue(':id', $id, SQLITE3_TEXT);
        $r = $statement->execute()->fetchArray(SQLITE3_ASSOC);
        if ($r){
            $this->id = $r["id"];
            $this->name = HTML::e($r["name"]);
            $this->description = HTML::e($r["description"]);
        }
    }

    /**
     * Retrieves the buildable identifier.
     *
     * @return int Buildable ID.
     */
    public function get_id(){
        return $this->id;
    }

    /**
     * Retrieves the buildable name.
     *
     * @return string Buildable name.
     */
    public function get_name(){
        return $this->name;
    }

    /**
     * Retrieves the buildable description.
     *
     * @return string Buildable description.
     */
    public function get_description(){
        return $this->description;
    }

    /**
     * Gets the path to the building image. 
     *
     * @return string Image URL, or a fixed unknown image.
     */
    public function get_image(){
        return APPLICATION::img("BUILDING", $this->id);
    }

}