class Wayra_Cuotas_Public {

	private $plugin_name;
	private $version;

	public function __construct( $plugin_name, $version ) {
		$this->plugin_name = $plugin_name;
		$this->version     = $version;

		// Registrar shortcode
		add_action( 'init', [ $this, 'wayra_installments_add_short_code' ] );
	}

	public function enqueue_styles() {
		wp_enqueue_style(
			$this->plugin_name,
			plugin_dir_url( __FILE__ ) . 'css/wayra-cuotas-public.css',
			[],
			$this->version,
			'all'
		);
	}

	// SHORTCODE
	public function wayra_installments_render_shortcode( $atts ) {
		global $product;

		// Asegurar contexto de producto
		if ( empty( $product ) || ! $product instanceof WC_Product ) {
			return '';
		}

		$attributes = shortcode_atts(
			[ 'image' => 'true', 'store' => 'false' ],
			(array) $atts
		);

		$config = (array) get_option( 'wayra-cuotas', [] );

		if ( empty( $config['installments'] ) || ! is_array( $config['installments'] ) ) {
			return '';
		}

		// Flags producto / categorías
		$show_installments_product  = '';
		if ( ( $config['disable_on_products'] ?? '' ) === 'yes' ) {
			$show_installments_product = get_post_meta( $product->get_id(), 'wayra_cuotas_product', true );
		}

		$show_installments_category = '';
		if ( ( $config['disable_on_categories'] ?? '' ) === 'yes' ) {
			foreach ( (array) $product->get_category_ids() as $category_id ) {
				if ( get_term_meta( $category_id, 'wayra_cuotas_category', true ) === 'no' ) {
					$show_installments_category = 'no';
				}
			}
		}

		if ( $show_installments_product === 'no' || $show_installments_category === 'no' ) {
			return '';
		}

		$product_price = (float) $product->get_price();
		if ( $product_price <= 0 ) {
			return '';
		}

		// Cuotas por producto
		$product_installments = [];
		if ( $show_installments_product !== 'no' ) {
			$product_installments_saved = (array) get_post_meta( $product->get_id(), 'wayra_cuotas_product_installments', true );
			foreach ( (array) $config['installments'] as $installment ) {
				if ( ( $product_installments_saved[ $installment ] ?? '' ) !== 'no' ) {
					$product_installments[] = $installment;
				}
			}
		}

		// Cuotas por categoría
		$category_installments = [];
		if ( $show_installments_category !== 'no' ) {
			foreach ( (array) $product->get_category_ids() as $category_id ) {
				$saved = (array) get_term_meta( $category_id, 'wayra_cuotas_category_installments', true );
				foreach ( (array) $config['installments'] as $installment ) {
					if ( ( $saved[ $installment ] ?? '' ) !== 'no' ) {
						$category_installments[] = $installment;
					}
				}
			}
			$category_installments = array_values( array_unique( $category_installments ) );
		}

		// Prioridad
		if ( ( $config['disable_on_products'] ?? '' ) === 'yes' && ( $config['disable_on_categories'] ?? '' ) === 'yes' ) {
			switch ( $config['installments_priority'] ?? 'product' ) {
				case 'category':
					$installments = $category_installments;
					sort( $installments );
					break;
				case 'sum_both':
					$installments = array_values( array_unique( array_merge( $product_installments, $category_installments ) ) );
					sort( $installments );
					break;
				case 'product':
				default:
					$installments = $product_installments;
			}
		} elseif ( ( $config['disable_on_products'] ?? '' ) === 'yes' ) {
			$installments = $product_installments;
		} elseif ( ( $config['disable_on_categories'] ?? '' ) === 'yes' ) {
			$installments = $category_installments;
		} else {
			$installments = (array) $config['installments'];
		}

		if ( empty( $installments ) ) {
			return '';
		}

		$product_price    = apply_filters( 'wayra_installments_price', $product_price );
		$installments_img = ( $attributes['image'] === 'true' ) ? ( $config['installments_img'] ?? '' ) : '';
		$installments_percent = (array) ( $config['installments_percent'] ?? [] );
		$installments_text    = (array) ( $config['installments_text'] ?? [] );
		$installments_type    = ( $attributes['store'] === 'true' ) ? 'store' : 'product';
		$extra_percent        = apply_filters( 'wayra_installments_extra_percent', 0 );

		if ( ( $config['installments_order'] ?? 'asc' ) === 'desc' ) {
			$installments = array_reverse( $installments );
		}

		// JS (solo en producto)
		if ( $installments_type === 'product' ) {
			$data = [];
			foreach ( $installments as $i ) {
				$data[] = [
					'installment'       => $i,
					'text'              => ( $installments_text[ $i ] ?? '' ) . __( ' of ', 'wayra-cuotas' ),
					'percent'           => (float) ( $installments_percent[ $i ] ?? 0 ),
					'extraPercent'      => (float) $extra_percent,
					'thousandSeparator' => wc_get_price_thousand_separator(),
					'decimalSeparator'  => wc_get_price_decimal_separator(),
				];
			}

			if ( ! function_exists( 'is_plugin_active' ) ) {
				include_once ABSPATH . 'wp-admin/includes/plugin.php';
			}

			$is_tm = is_plugin_active( 'woocommerce-tm-extra-product-options/tm-woo-extra-product-options.php' );
			if ( $is_tm ) {
				wp_register_script(
					'wayra-cuotas-tm-extra-product-options',
					plugin_dir_url( __FILE__ ) . 'js/wayra-cuotas-tm-extra-product-options.js',
					[],
					defined('Wayra_Cuotas_VERSION') ? Wayra_Cuotas_VERSION : $this->version,
					true
				);
				wp_localize_script( 'wayra-cuotas-tm-extra-product-options', 'installments', $data );
				wp_enqueue_script( 'wayra-cuotas-tm-extra-product-options' );
			}

			$is_ppom = is_plugin_active( 'woocommerce-product-addon/woocommerce-product-addon.php' );
			if ( $is_ppom ) {
				wp_register_script(
					'wayra-cuotas-ppom-for-woocommerce',
					plugin_dir_url( __FILE__ ) . 'js/wayra-cuotas-ppom-for-woocommerce.js',
					[],
					defined('Wayra_Cuotas_VERSION') ? Wayra_Cuotas_VERSION : $this->version,
					true
				);
				wp_localize_script( 'wayra-cuotas-ppom-for-woocommerce', 'installments', $data );
				wp_enqueue_script( 'wayra-cuotas-ppom-for-woocommerce' );
			}

			if ( ! $is_ppom && $product->is_type( 'variable' ) ) {
				wp_register_script(
					'wayra-cuotas-variable-products',
					plugin_dir_url( __FILE__ ) . 'js/wayra-cuotas-variable-products.js',
					[],
					defined('Wayra_Cuotas_VERSION') ? Wayra_Cuotas_VERSION : $this->version,
					true
				);
				wp_localize_script( 'wayra-cuotas-variable-products', 'installments', $data );
				wp_enqueue_script( 'wayra-cuotas-variable-products' );
			}
		}

		// Render
		ob_start();
		include __DIR__ . '/partials/wayra-cuotas-public-display.php';
		return ob_get_clean();
	}

	public function wayra_installments_on_store() {
		echo do_shortcode( '[wayra_cuotas store=true]' );
	}

	public function wayra_installments_on_product() {
		echo do_shortcode( '[wayra_cuotas]' );
	}

	public function wayra_installments_add_short_code() {
		add_shortcode( 'wayra_cuotas', [ $this, 'wayra_installments_render_shortcode' ] );
	}
}