<?php
namespace FrontGlut\Core;

defined( 'ABSPATH' ) || exit;

/**
 * Conditional asset loading: nothing is enqueued unless a FrontGlut shortcode/block rendered
 * or FrontGlut::need() is called.
 */
class Assets {
	private static $needed = false;

	public static function init() {
		add_action( 'wp_enqueue_scripts', array( __CLASS__, 'register' ), 1 );
		add_action( 'wp_enqueue_scripts', array( __CLASS__, 'maybe_enqueue' ), 20 );
		add_action( 'admin_enqueue_scripts', array( __CLASS__, 'admin' ) );
	}

	public static function register() {
		wp_register_style( 'frontglut', FRONTGLUT_URL . 'assets/css/frontglut.css', array( 'dashicons' ), FRONTGLUT_VERSION );
		wp_register_script( 'frontglut', FRONTGLUT_URL . 'assets/js/frontglut.js', array(), FRONTGLUT_VERSION, true );
	}

	public static function maybe_enqueue() {
		global $post;
		if ( is_singular() && $post && false !== strpos( (string) $post->post_content, '[frontglut_' ) ) {
			self::need();
		}
		if ( is_singular() && $post && has_block( 'frontglut/dashboard', $post ) ) {
			self::need();
		}
		if ( apply_filters( 'frontglut_force_assets', false ) ) {
			self::need();
		}
	}

	/** Call from any renderer that outputs FrontGlut markup. */
	public static function need() {
		if ( ! wp_style_is( 'frontglut', 'registered' ) ) {
			self::register();
		}
		wp_enqueue_style( 'frontglut' );
		wp_enqueue_script( 'frontglut' );
		if ( ! self::$needed ) {
			self::$needed = true;
			wp_add_inline_style( 'frontglut', self::theme_css() );
			wp_localize_script( 'frontglut', 'FrontGlut', array(
				'ajax'  => Ajax::url(),
				'nonce' => Ajax::nonce(),
				'rest'  => esc_url_raw( rest_url( 'frontglut/v1/' ) ),
				'i18n'  => array(
					'confirm'   => __( 'Are you sure?', 'frontglut' ),
					'saved'     => __( 'Saved.', 'frontglut' ),
					'error'     => __( 'Something went wrong.', 'frontglut' ),
					'uploading' => __( 'Uploading…', 'frontglut' ),
					'remove'    => __( 'Remove', 'frontglut' ),
					'addrow'    => __( 'Add row', 'frontglut' ),
				),
			) );
		}
	}

	public static function theme_css() {
		$t       = Settings::get( 'theme', array() );
		$primary = sanitize_hex_color( isset( $t['primary'] ) ? $t['primary'] : '#2563eb' );
		$primary = $primary ? $primary : '#2563eb';
		$radius  = max( 0, min( 28, (int) ( isset( $t['radius'] ) ? $t['radius'] : 10 ) ) );
		$fonts   = array(
			'system' => 'system-ui,-apple-system,"Segoe UI",Roboto,sans-serif',
			'serif'  => 'Georgia,"Times New Roman",serif',
			'mono'   => 'ui-monospace,SFMono-Regular,Menlo,monospace',
			'inherit' => 'inherit',
		);
		$font = isset( $fonts[ $t['font'] ?? 'system' ] ) ? $fonts[ $t['font'] ?? 'system' ] : $fonts['system'];
		$css  = ":root{--frontglut-primary:{$primary};--frontglut-radius:{$radius}px;--frontglut-font:{$font}}";
		$mode = $t['mode'] ?? 'auto';
		if ( 'dark' === $mode ) {
			$css .= ':root{color-scheme:dark}.frontglut-app,.frontglut-box{--frontglut-bg:#0f1218;--frontglut-card:#171b23;--frontglut-fg:#e8ebf0;--frontglut-mut:#9aa3b2;--frontglut-line:#2a303b}';
		}
		return $css;
	}

	public static function admin( $hook ) {
		$screen = function_exists( 'get_current_screen' ) ? get_current_screen() : null;
		$own_pt = $screen && 0 === strpos( (string) $screen->post_type, 'frontglut_' );
		if ( ! $own_pt && false === strpos( (string) $hook, 'frontglut' ) && false === strpos( (string) $hook, 'frontglut-' ) ) {
			return;
		}
		wp_enqueue_style( 'frontglut', FRONTGLUT_URL . 'assets/css/frontglut.css', array( 'dashicons' ), FRONTGLUT_VERSION );
		wp_enqueue_style( 'frontglut-admin', FRONTGLUT_URL . 'assets/css/admin.css', array( 'frontglut' ), FRONTGLUT_VERSION );
		wp_enqueue_media();
		wp_enqueue_script( 'frontglut', FRONTGLUT_URL . 'assets/js/frontglut.js', array(), FRONTGLUT_VERSION, true );
		wp_enqueue_script( 'frontglut-admin', FRONTGLUT_URL . 'assets/js/admin.js', array( 'frontglut', 'jquery-ui-sortable' ), FRONTGLUT_VERSION, true );
		wp_localize_script( 'frontglut', 'FrontGlut', array(
			'ajax'  => Ajax::url(),
			'nonce' => Ajax::nonce(),
			'rest'  => esc_url_raw( rest_url( 'frontglut/v1/' ) ),
			'i18n'  => array( 'confirm' => __( 'Are you sure?', 'frontglut' ), 'saved' => __( 'Saved.', 'frontglut' ), 'error' => __( 'Something went wrong.', 'frontglut' ), 'uploading' => __( 'Uploading…', 'frontglut' ), 'remove' => __( 'Remove', 'frontglut' ), 'addrow' => __( 'Add row', 'frontglut' ) ),
		) );
	}
}