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<?php
/**
 * A template for signatures. This predefines the background {@link Card} and {@link Component}s.
 *
 * @author Lemmmy
 * @see Card
 * @see Component
 * @see TemplateNormal
 */
class Template
{
    /**
     * The list of components for this signature.
     *
     * @var array
     */
    private $components = array();

    /**
     * The signature that this is a template of.
     *
     * @var Signature
     */
    private $signature;

    /**
     * The Card used to draw the background of the signature.
     *
     * @var Card
     */
    private $card;

    /**
     * Extra padding to be added to the signature.
     *
     * @var int
     */
    protected $extraWidth;

    /**
     * Extra padding to be added to the signature.
     *
     * @var int
     */
    protected $extraHeight;

    /**
     * Add the components.
     *
     * @param OsuSignature $signature The base signature.
     */
    public function __construct(OsuSignature $signature) {
        $this->signature = $signature;
    }

    /**
     * This template's components.
     *
     * @return array
     */
    public function getComponents() {
        return $this->components;
    }

    /**
     * @return Signature The signature that this is a template of.
     */
    public function getSignature() {
        return $this->signature;
    }

    /**
     * @return Card The background card of this signature template.
     */
    public function getCard() {
        return $this->card;
    }

    /**
     * Sets the background card of this signature template.
     *
     * @param Card $card The card to set to.
     */
    public function setCard($card) {
        $this->card = $card;
    }

    /**
     * @return int The width to be added to the image.
     */
    public function getImageMarginWidth() {
        return 0;
    }

    /**
     * @return int The height to be added to the image.
     */
    public function getImageMarginHeight() {
        return 0;
    }

    /**
     * Calculates the required width of the template based on the components
     * and their layout.
     *
     * @return int The width we calculated.
     */
    public function calculateBaseWidth() {
        // if (isset($_GET['width']) && is_numeric($_GET['width']) && $_GET['width'] > 0) return $_GET['width']; // Debugging purposes

        $x1 = 0;
        $x2 = 0;

        /** @var Component $component */
        foreach ($this->getComponents() as $component) {
            if (!$component->usesSpace) continue;
            if ($component->x < $x1) $x1 = $component->x;
            if ($component->x + $component->getWidth() > $x2) $x2 = $component->x + $component->getWidth();
        }

        return $x2 - $x1 + $this->extraWidth;

        //return 330;
    }

    /**
     * Calculates the required height of the template based on the components
     * and their layout.
     *
     * @return int The height we calculated.
     */
    public function calculateBaseHeight() {
        // if (isset($_GET['height']) && is_numeric($_GET['height']) && $_GET['height'] > 0) return $_GET['height']; // Debugging purposes

        $y1 = 0;
        $y2 = 0;

        foreach ($this->getComponents() as $component) {
            if (!$component->usesSpace) continue;
            if ($component->y < $y1) $y1 = $component->y;
            if ($component->y + $component->getHeight() > $y2) $y2 = $component->y + $component->getHeight();
        }

        return $y2 - $y1 + $this->extraHeight;

        //return 86;
    }

    /**
     * Adds a component to this template
     *
     * @param Component $component The component to add
     */
    public function addComponent(Component $component) {
        array_push($this->components, $component);
    }

    /**
     * Draws the template's components
     */
    public function drawComponents() {
        foreach ($this->getComponents() as $component) {
            $component->draw($this->getSignature());
        }
    }
}