<?php
/**
 * Plugin Name:       AidBadge – Country Support Stickers
 * Plugin URI:        https://wordpress.org/plugins/aidbadge-country-support-stickers/
 * Description:        Displays country support, solidarity, or cause stickers and badges on your WordPress website. Site owners can choose a sticker and an optional animation from the settings screen, and it will appear on the front page of the site.
 * Version:           1.0.0
 * Stable tag:        1.0.0
 * Requires at least: 5.2
 * Requires PHP:      7.0
 * Tested up to:      7.0
 * Author:            NexGrowix
 * Author URI:        https://www.nexgrowix.com/
 * License:           GPLv3 or later
 * License URI:       https://www.gnu.org/licenses/gpl-3.0.html
 * Text Domain:       aidbadge-country-support-stickers
 * Domain Path:       /languages
 *
 * @package AidBadge_Country_Support_Stickers
 */

// Exit if accessed directly.
if ( ! defined( 'ABSPATH' ) ) {
	exit;
}

/**
 * Get the list of allowed sticker keys.
 *
 * @return array Allowed sticker keys.
 */
function aidbadge_get_sticker_keys() {
	return array( 'sticker1', 'sticker2', 'sticker3', 'sticker4', 'sticker5', 'sticker6', 'sticker7', 'sticker8' );
}

/**
 * Get the list of allowed animation keys.
 *
 * @return array Allowed animation keys.
 */
function aidbadge_get_animation_keys() {
	return array( 'none', 'float', 'pulse', 'shake', 'spin' );
}

/**
 * Get the available stickers with their names and image URLs.
 *
 * @return array Sticker data keyed by sticker id.
 */
function aidbadge_get_stickers() {
	$stickers = array();
	foreach ( aidbadge_get_sticker_keys() as $key ) {
		$index            = (int) substr( $key, 7 ); // Strip the "sticker" prefix.
		$stickers[ $key ] = array(
			'name' => sprintf(
				/* translators: %d: Sticker number. */
				__( 'Sticker %d', 'aidbadge-country-support-stickers' ),
				$index
			),
			'path' => plugins_url( 'images/sticker' . $index . '.png', __FILE__ ),
		);
	}

	return $stickers;
}

/**
 * Get the available animations keyed by animation id.
 *
 * @return array Animation labels keyed by animation id.
 */
function aidbadge_get_animations() {
	return array(
		'none'  => __( 'No Animation', 'aidbadge-country-support-stickers' ),
		'float' => __( 'Floating', 'aidbadge-country-support-stickers' ),
		'pulse' => __( 'Pulse', 'aidbadge-country-support-stickers' ),
		'shake' => __( 'Shake', 'aidbadge-country-support-stickers' ),
		'spin'  => __( 'Spin on Hover', 'aidbadge-country-support-stickers' ),
	);
}

/**
 * Enqueue admin assets only on the plugin settings page.
 *
 * @param string $hook The current admin page hook suffix.
 */
function aidbadge_admin_assets( $hook ) {
	if ( 'toplevel_page_aidbadge-sticker-settings' !== $hook ) {
		return;
	}

	wp_enqueue_style(
		'aidbadge-admin-style',
		plugins_url( 'css/sticker-style.css', __FILE__ ),
		array(),
		'1.0.0'
	);

	wp_enqueue_script(
		'aidbadge-admin-script',
		plugins_url( 'js/admin-script.js', __FILE__ ),
		array( 'jquery' ),
		'1.0.0',
		true
	);
}
add_action( 'admin_enqueue_scripts', 'aidbadge_admin_assets' );

/**
 * Enqueue frontend assets on the front page only.
 */
function aidbadge_frontend_assets() {
	if ( ! is_front_page() ) {
		return;
	}

	wp_enqueue_style(
		'aidbadge-frontend-style',
		plugins_url( 'css/frontend.css', __FILE__ ),
		array(),
		'1.0.0'
	);

	$animation = get_option( 'aidbadge_selected_animation', 'float' );

	if ( 'none' !== $animation ) {
		wp_add_inline_style( 'aidbadge-frontend-style', aidbadge_get_animation_css( $animation ) );
	}
}
add_action( 'wp_enqueue_scripts', 'aidbadge_frontend_assets' );

/**
 * Get the inline CSS for a given animation.
 *
 * @param string $animation Animation key.
 * @return string Inline CSS rules. Empty string for unknown animations.
 */
function aidbadge_get_animation_css( $animation ) {
	$css = '';

	switch ( $animation ) {
		case 'float':
			$css = '.aidbadge-sticker { animation: float 3s ease-in-out infinite; }';
			break;
		case 'pulse':
			$css = '.aidbadge-sticker { animation: pulse 2s infinite; }';
			break;
		case 'shake':
			$css = '.aidbadge-sticker { animation: shake 0.5s infinite; }';
			break;
		case 'spin':
			$css = '.aidbadge-sticker:hover { animation: spin 2s linear infinite; }';
			break;
	}

	return $css;
}

/**
 * Register the admin menu page.
 */
function aidbadge_add_admin_menu() {
	add_menu_page(
		__( 'Sticker Settings', 'aidbadge-country-support-stickers' ),
		__( 'AidBadge', 'aidbadge-country-support-stickers' ),
		'manage_options',
		'aidbadge-sticker-settings',
		'aidbadge_render_admin_page',
		'dashicons-format-image',
		80
	);
}
add_action( 'admin_menu', 'aidbadge_add_admin_menu' );

/**
 * Render the admin settings page and handle (secure) form submission.
 */
function aidbadge_render_admin_page() {
	// Verify the user has the required capability.
	if ( ! current_user_can( 'manage_options' ) ) {
		return;
	}

	// Handle form submission.
	if ( isset( $_POST['aidbadge_save_settings'] ) ) {
		// Verify the nonce to protect against CSRF.
		check_admin_referer( 'aidbadge_save_settings', 'aidbadge_settings_nonce' );

		// Sanitize and validate the selected sticker.
		$selected_sticker = isset( $_POST['selected_sticker'] )
			? sanitize_text_field( wp_unslash( $_POST['selected_sticker'] ) )
			: '';

		if ( ! in_array( $selected_sticker, aidbadge_get_sticker_keys(), true ) ) {
			$selected_sticker = 'sticker1';
		}

		// Sanitize and validate the selected animation.
		$selected_animation = isset( $_POST['selected_animation'] )
			? sanitize_text_field( wp_unslash( $_POST['selected_animation'] ) )
			: 'none';

		if ( ! in_array( $selected_animation, aidbadge_get_animation_keys(), true ) ) {
			$selected_animation = 'none';
		}

		update_option( 'aidbadge_selected_sticker', $selected_sticker );
		update_option( 'aidbadge_selected_animation', $selected_animation );

		echo '<div class="notice notice-success is-dismissible"><p>' . esc_html__( 'Settings saved.', 'aidbadge-country-support-stickers' ) . '</p></div>';
	}

	$stickers           = aidbadge_get_stickers();
	$animations         = aidbadge_get_animations();
	$selected_sticker   = get_option( 'aidbadge_selected_sticker', 'sticker1' );
	$selected_animation = get_option( 'aidbadge_selected_animation', 'float' );

	// Make sure stored values are still valid.
	if ( ! in_array( $selected_sticker, aidbadge_get_sticker_keys(), true ) ) {
		$selected_sticker = 'sticker1';
	}
	if ( ! in_array( $selected_animation, aidbadge_get_animation_keys(), true ) ) {
		$selected_animation = 'none';
	}
	?>

	<div class="wrap aidbadge-admin-wrap">
		<h1><?php echo esc_html__( 'AidBadge Sticker Selector', 'aidbadge-country-support-stickers' ); ?></h1>

		<form method="post" class="aidbadge-settings-form">
			<?php wp_nonce_field( 'aidbadge_save_settings', 'aidbadge_settings_nonce' ); ?>

			<div class="aidbadge-sticker-selector">
				<h2><?php echo esc_html__( 'Select Sticker', 'aidbadge-country-support-stickers' ); ?></h2>
				<div class="sticker-grid">
					<?php foreach ( $stickers as $key => $sticker ) : ?>
						<div class="sticker-item <?php echo ( $key === $selected_sticker ) ? 'selected' : ''; ?>"
							data-sticker-id="<?php echo esc_attr( $key ); ?>">
							<img src="<?php echo esc_url( $sticker['path'] ); ?>" alt="<?php echo esc_attr( $sticker['name'] ); ?>" />
							<div class="checkmark">&#10003;</div>
						</div>
					<?php endforeach; ?>
				</div>
				<input type="hidden" name="selected_sticker" id="selected_sticker" value="<?php echo esc_attr( $selected_sticker ); ?>" />
			</div>

			<div class="aidbadge-animation-selector">
				<h2><?php echo esc_html__( 'Select Animation', 'aidbadge-country-support-stickers' ); ?></h2>
				<select name="selected_animation" id="selected_animation">
					<?php foreach ( $animations as $key => $name ) : ?>
						<option value="<?php echo esc_attr( $key ); ?>" <?php selected( $selected_animation, $key ); ?>>
							<?php echo esc_html( $name ); ?>
						</option>
					<?php endforeach; ?>
				</select>
			</div>

			<?php submit_button( __( 'Save Changes', 'aidbadge-country-support-stickers' ), 'primary', 'aidbadge_save_settings' ); ?>
		</form>
	</div>

	<?php
}

/**
 * Display the selected sticker on the front page footer.
 */
function aidbadge_display_sticker() {
	if ( ! is_front_page() ) {
		return;
	}

	$selected_sticker   = get_option( 'aidbadge_selected_sticker' );
	$selected_animation = get_option( 'aidbadge_selected_animation', 'float' );

	if ( empty( $selected_sticker ) ) {
		return;
	}

	// Validate stored values before output.
	if ( ! in_array( $selected_sticker, aidbadge_get_sticker_keys(), true ) ) {
		return;
	}
	if ( ! in_array( $selected_animation, aidbadge_get_animation_keys(), true ) ) {
		$selected_animation = 'none';
	}

	$stickers  = aidbadge_get_stickers();
	$image_url = $stickers[ $selected_sticker ]['path'];
	$alt_text  = sprintf(
		/* translators: %s: Sticker name. */
		__( '%s support sticker', 'aidbadge-country-support-stickers' ),
		$stickers[ $selected_sticker ]['name']
	);

	$wrapper_class = 'aidbadge-sticker';
	if ( 'none' !== $selected_animation ) {
		$wrapper_class .= ' ' . $selected_animation;
	}

	printf(
		'<div class="%1$s"><img src="%2$s" alt="%3$s" /></div>',
		esc_attr( $wrapper_class ),
		esc_url( $image_url ),
		esc_attr( $alt_text )
	);
}
add_action( 'wp_footer', 'aidbadge_display_sticker' );