<?php
/**
 * Button Block
 *
 * @package Tableberg
 */

namespace Tableberg\Blocks;

use Tableberg\Utils\Utils;

/**
 * Handle the block registration on server side and rendering.
 */
class Button {

	/**
	 * Constructor
	 *
	 * @return void
	 */
	public function __construct() {
		add_action( 'init', array( $this, 'block_registration' ) );
	}

	/**
	 * Get border CSS styles from border style array
	 *
	 * @param array $border_style - border style array.
	 * @return string   border CSS inline style string
	 */
	public function get_border_style( $border_style ) {
		if ( ! is_array( $border_style ) ) {
			return "";
		}

		$radius = $border_style['radius'];
		if ( ! is_array( $radius ) ) {
			return "border-radius: {$radius};";
		}

		if ( is_array( $radius ) && count( $border_style['radius'] ) === 4 ) {
			return "border-top-left-radius: {$border_style['radius']['topLeft']};" .
				"border-bottom-left-radius: {$border_style['radius']['bottomLeft']};" .
				"border-bottom-right-radius: {$border_style['radius']['bottomRight']};" .
				"border-top-right-radius: {$border_style['radius']['topRight']};";
		}
		return "";
	}
	/**
	 * Get block styles.
	 *
	 * @param array $attributes - block attributes.
	 * @return string Generated CSS styles.
	 */
	public static function get_styles( $attributes ) {
		if (!isset($attributes['textHoverColor'])) {
			$attributes['textHoverColor'] = "";
		}
		if (!isset($attributes['textColor'])) {
			$attributes['textColor'] = "";
		}

		$background_color       = Utils::get_background_color( $attributes, 'backgroundColor', 'backgroundGradient' );
		$background_hover_color = Utils::get_background_color( $attributes, 'backgroundHoverColor', 'backgroundHoverGradient' );


		$styles = array(
			'--tableberg-button-background-color'       => $background_color,
			'--tableberg-button-hover-background-color' => $background_hover_color,
			'--tableberg-button-text-hover-color'       => $attributes['textHoverColor'],
			'--tableberg-button-text-color'             => $attributes['textColor']
		);

		if (isset($attributes['padding'])) {
			$p = Utils::get_spacing_css($attributes['padding']);
			$styles += [
				'padding-top' => $p['top']??'',
				'padding-right' => $p['right']??'',
				'padding-bottom' => $p['bottom']??'',
				'padding-left' => $p['left']??'',
			];
		}

		return Utils::generate_css_string( $styles );
	}
	/**
	 * Get block classes.
	 *
	 * @param array $attributes - block attributes.
	 * @return string Generated block classess.
	 */
	public static function get_classes( $attributes ) {
		if (!isset($attributes['backgroundColor'])) {
			$attributes['backgroundColor'] = "";
		}
		if (!isset($attributes['backgroundHoverColor'])) {
			$attributes['backgroundHoverColor'] = "";
		}
		if (!isset($attributes['textHoverColor'])) {
			$attributes['textHoverColor'] = "";
		}
		if (!isset($attributes['textColor'])) {
			$attributes['textColor'] = "";
		}
		if (!isset($attributes['backgroundGradient'])) {
			$attributes['backgroundGradient'] = "";
		}
		if (!isset($attributes['backgroundHoverGradient'])) {
			$attributes['backgroundHoverGradient'] = "";
		}

		$classes = join(
			' ',
			array(
				! Utils::is_value_empty( $attributes['backgroundColor'] ) || ! Utils::is_value_empty( $attributes['backgroundGradient'] ) ? 'has-background-color' : '',
				! Utils::is_value_empty( $attributes['backgroundHoverColor'] ) || ! Utils::is_value_empty( $attributes['backgroundHoverGradient'] ) ? 'has-hover-background-color' : '',
				! Utils::is_value_empty( $attributes['textHoverColor'] ) ? 'has-hover-text-color' : '',
				! Utils::is_value_empty( $attributes['textColor'] ) ? 'has-text-color' : '',
			)
		);
		return $classes;
	}
	/**
	 * Renders the custom button block on the server.
	 *
	 * @param array    $attributes The block attributes.
	 * @param string   $content    The block content.
	 * @param WP_Block $block      The block object.
	 * @return string  Returns the HTML content for the custom button block.
	 */
	public function render_tableberg_button_block( $attributes, $content, $block ) {
		$text        = isset( $attributes['text'] ) ? $attributes['text'] : '';
		$align       = isset( $attributes['align'] ) ? $attributes['align'] : '';
		$width       = isset( $attributes['width'] ) ? $attributes['width'] : '';
		$text_align  = isset( $attributes['textAlign'] ) ? $attributes['textAlign'] : '';
		$id          = isset( $attributes['id'] ) ? $attributes['id'] : '';
		$url         = isset( $attributes['url'] ) ? $attributes['url'] : '';
		$link_target = isset( $attributes['linkTarget'] ) ? $attributes['linkTarget'] : '';
		$rel         = isset( $attributes['rel'] ) ? $attributes['rel'] : '';
		$style       = isset( $attributes['style'] ) ? $attributes['style'] : '';
		$font_size   = isset( $attributes['fontSize'] ) ? $attributes['fontSize'] : '';
		$border      = isset( $style['border'] ) ? $style['border'] : '';

		$classes = trim(
			join(
				' ',
				array(
					'wp-block-tableberg-button',
					$align ? "block-align-{$align}" : '',
					$width ? "has-custom-width wp-block-button__width-{$width}" : '',
					$font_size ? 'has-custom-font-size' : '',
					$this->get_classes( $attributes ),
				)
			)
		);

		$button_classes = trim(
			join(
				' ',
				array(
					'wp-block-button__link',
					'wp-element-button',
					$text_align ? "has-text-align-{$text_align}" : '',
				)
			)
		);
		$button_styles  = join(
			'',
			array(
				$this->get_styles( $attributes ),
				$this->get_border_style( $border ),
			)
		);

		$button_attrs = sprintf( 'class="%1$s" style="%2$s"', esc_attr( $button_classes ), esc_attr( $button_styles ) );

		$button = $url ? sprintf(
			'<a href="%1$s" %2$s rel="%3$s" target="%4$s">%5$s</a>',
			$url,
			$button_attrs,
			esc_attr( $rel ),
			esc_attr( $link_target ),
			esc_html( $text )
		) :
			sprintf( '<div %1$s>%2$s</div>', $button_attrs, esc_html( $text ) );

		return sprintf( '<div class="%1$s" id="%2$s">%3$s</div>', $classes, esc_attr( $id ), $button );
	}

	/**
	 * Register the block.
	 */
	public function block_registration() {
		register_block_type(
			TABLEBERG_DIR_PATH . 'build/button/block.json',
			array(
				'render_callback' => array( $this, 'render_tableberg_button_block' ),
			)
		);
	}
}