<?php
/**
 * Plugin Name: Adaptive Intent Path
 * Description: Smart on-site guide that predicts visitor intent from behavior and shows progressive action prompts such as Buy, Learn more, Talk to expert, and Get quote.
 * Version: 1.0.1
 * Requires at least: 6.0
 * Requires PHP: 7.4
 * Author: WPCraftEngineer
 * License: GPL-2.0-or-later
 * License URI: https://www.gnu.org/licenses/gpl-2.0.html
 * Text Domain: adaptive-intent-path
 * Domain Path: /languages
 */

if ( ! defined( 'ABSPATH' ) ) {
	exit;
}

final class WPCraftEngineer_Adaptive_Intent_Path {
		const VERSION = '1.0.1';
		const OPTION  = 'adapinpa_settings';

		private static $instance = null;

		public static function instance() {
			if ( null === self::$instance ) {
				self::$instance = new self();
			}
			return self::$instance;
		}

		private function __construct() {
			add_action( 'admin_menu', array( $this, 'admin_menu' ) );
			add_action( 'admin_init', array( $this, 'register_settings' ) );
			add_action( 'admin_enqueue_scripts', array( $this, 'admin_assets' ) );
			add_action( 'wp_enqueue_scripts', array( $this, 'frontend_assets' ) );
			add_action( 'wp_footer', array( $this, 'render_prompt' ) );
		}

		public static function defaults() {
			return array(
				'enabled'          => 1,
				'time_trigger'     => 12,
				'scroll_trigger'   => 35,
				'reshow_hours'     => 24,
				'position'         => 'bottom-right',
				'headline'         => __( 'What would you like to do next?', 'adaptive-intent-path' ),
				'subtext'          => __( 'Choose your intent and we will guide you to the right next step.', 'adaptive-intent-path' ),
				'primary_color'    => '#2563eb',
				'background_color' => '#ffffff',
				'text_color'       => '#111827',
				'buy_label'        => __( 'Buy', 'adaptive-intent-path' ),
				'buy_url'          => '/shop/',
				'learn_label'      => __( 'Learn more', 'adaptive-intent-path' ),
				'learn_url'        => '/blog/',
				'expert_label'     => __( 'Talk to expert', 'adaptive-intent-path' ),
				'expert_url'       => '/contact/',
				'quote_label'      => __( 'Get quote', 'adaptive-intent-path' ),
				'quote_url'        => '/request-a-quote/',
			);
		}

		public function get_settings() {
			$saved = get_option( self::OPTION, array() );
			return wp_parse_args( is_array( $saved ) ? $saved : array(), self::defaults() );
		}

		public function admin_menu() {
			add_options_page(
				__( 'Adaptive Intent Path', 'adaptive-intent-path' ),
				__( 'Adaptive Intent Path', 'adaptive-intent-path' ),
				'manage_options',
				'adaptive-intent-path',
				array( $this, 'settings_page' )
			);
		}

		public function register_settings() {
			register_setting(
				'adapinpa_settings_group',
				self::OPTION,
				array(
					'type'              => 'array',
					'sanitize_callback' => array( $this, 'sanitize_settings' ),
					'default'           => self::defaults(),
				)
			);
		}

		public function sanitize_settings( $input ) {
			$defaults = self::defaults();
			$input    = is_array( $input ) ? $input : array();
			$output   = array();

			$output['enabled']          = empty( $input['enabled'] ) ? 0 : 1;
			$output['time_trigger']     = isset( $input['time_trigger'] ) ? max( 1, absint( $input['time_trigger'] ) ) : $defaults['time_trigger'];
			$output['scroll_trigger']   = isset( $input['scroll_trigger'] ) ? min( 100, max( 1, absint( $input['scroll_trigger'] ) ) ) : $defaults['scroll_trigger'];
			$output['reshow_hours']     = isset( $input['reshow_hours'] ) ? max( 1, absint( $input['reshow_hours'] ) ) : $defaults['reshow_hours'];
			$output['position']         = isset( $input['position'] ) && in_array( $input['position'], array( 'bottom-right', 'bottom-left', 'center' ), true ) ? $input['position'] : $defaults['position'];
			$output['headline']         = isset( $input['headline'] ) ? sanitize_text_field( wp_unslash( $input['headline'] ) ) : $defaults['headline'];
			$output['subtext']          = isset( $input['subtext'] ) ? sanitize_textarea_field( wp_unslash( $input['subtext'] ) ) : $defaults['subtext'];
			$output['primary_color']    = isset( $input['primary_color'] ) ? sanitize_hex_color( wp_unslash( $input['primary_color'] ) ) : $defaults['primary_color'];
			$output['background_color'] = isset( $input['background_color'] ) ? sanitize_hex_color( wp_unslash( $input['background_color'] ) ) : $defaults['background_color'];
			$output['text_color']       = isset( $input['text_color'] ) ? sanitize_hex_color( wp_unslash( $input['text_color'] ) ) : $defaults['text_color'];

			$output['primary_color']    = $output['primary_color'] ? $output['primary_color'] : $defaults['primary_color'];
			$output['background_color'] = $output['background_color'] ? $output['background_color'] : $defaults['background_color'];
			$output['text_color']       = $output['text_color'] ? $output['text_color'] : $defaults['text_color'];

			foreach ( array( 'buy', 'learn', 'expert', 'quote' ) as $intent ) {
				$label_key            = $intent . '_label';
				$url_key              = $intent . '_url';
				$output[ $label_key ] = isset( $input[ $label_key ] ) ? sanitize_text_field( wp_unslash( $input[ $label_key ] ) ) : $defaults[ $label_key ];
				$output[ $url_key ]   = isset( $input[ $url_key ] ) ? esc_url_raw( wp_unslash( $input[ $url_key ] ) ) : $defaults[ $url_key ];
			}

			return $output;
		}

		public function admin_assets( $hook ) {
			if ( 'settings_page_adaptive-intent-path' !== $hook ) {
				return;
			}
			wp_enqueue_style( 'adapinpa-admin', plugin_dir_url( __FILE__ ) . 'assets/css/adapinpa-admin.css', array(), self::VERSION );
		}

		public function frontend_assets() {
			$settings = $this->get_settings();
			if ( empty( $settings['enabled'] ) ) {
				return;
			}

			wp_enqueue_style( 'adapinpa-frontend', plugin_dir_url( __FILE__ ) . 'assets/css/adapinpa-frontend.css', array(), self::VERSION );
			wp_enqueue_script( 'adapinpa-frontend', plugin_dir_url( __FILE__ ) . 'assets/js/adapinpa-frontend.js', array(), self::VERSION, true );

			wp_localize_script(
				'adapinpa-frontend',
				'adapinpaConfig',
				array(
					'timeTrigger'   => absint( $settings['time_trigger'] ),
					'scrollTrigger' => absint( $settings['scroll_trigger'] ),
					'reshowHours'   => absint( $settings['reshow_hours'] ),
					'position'      => sanitize_key( $settings['position'] ),
					'intents'       => array(
						'buy'    => esc_url( $settings['buy_url'] ),
						'learn'  => esc_url( $settings['learn_url'] ),
						'expert' => esc_url( $settings['expert_url'] ),
						'quote'  => esc_url( $settings['quote_url'] ),
					),
				)
			);
		}

		public function render_prompt() {
			$settings = $this->get_settings();
			if ( empty( $settings['enabled'] ) ) {
				return;
			}
			$style = sprintf(
				'--adapinpa-primary:%1$s;--adapinpa-bg:%2$s;--adapinpa-text:%3$s;',
				esc_attr( $settings['primary_color'] ),
				esc_attr( $settings['background_color'] ),
				esc_attr( $settings['text_color'] )
			);
			?>
			<div id="adapinpa-guide" class="adapinpa-guide adapinpa-hidden adapinpa-<?php echo esc_attr( $settings['position'] ); ?>" style="<?php echo esc_attr( $style ); ?>" aria-live="polite">
				<button type="button" class="adapinpa-close" aria-label="<?php esc_attr_e( 'Close guide', 'adaptive-intent-path' ); ?>">&times;</button>
				<div class="adapinpa-badge"><?php esc_html_e( 'Smart Guide', 'adaptive-intent-path' ); ?></div>
				<h3><?php echo esc_html( $settings['headline'] ); ?></h3>
				<p><?php echo esc_html( $settings['subtext'] ); ?></p>
				<div class="adapinpa-intents">
					<button type="button" data-intent="buy"><?php echo esc_html( $settings['buy_label'] ); ?></button>
					<button type="button" data-intent="learn"><?php echo esc_html( $settings['learn_label'] ); ?></button>
					<button type="button" data-intent="expert"><?php echo esc_html( $settings['expert_label'] ); ?></button>
					<button type="button" data-intent="quote"><?php echo esc_html( $settings['quote_label'] ); ?></button>
				</div>
				<div class="adapinpa-prediction" data-adapinpa-prediction></div>
			</div>
			<?php
		}

		public function settings_page() {
			if ( ! current_user_can( 'manage_options' ) ) {
				return;
			}
			$s = $this->get_settings();
			?>
			<div class="wrap adapinpa-admin-wrap">
				<h1><?php esc_html_e( 'Adaptive Intent Path', 'adaptive-intent-path' ); ?></h1>
				<form method="post" action="options.php">
					<?php settings_fields( 'adapinpa_settings_group' ); ?>
					<div class="adapinpa-card">
						<h2><?php esc_html_e( 'Smart Guide Settings', 'adaptive-intent-path' ); ?></h2>
						<label><input type="checkbox" name="<?php echo esc_attr( self::OPTION ); ?>[enabled]" value="1" <?php checked( 1, $s['enabled'] ); ?>> <?php esc_html_e( 'Enable frontend guide', 'adaptive-intent-path' ); ?></label>
						<div class="adapinpa-grid">
							<?php $this->field( 'time_trigger', __( 'Time trigger seconds', 'adaptive-intent-path' ), 'number', $s ); ?>
							<?php $this->field( 'scroll_trigger', __( 'Scroll trigger percent', 'adaptive-intent-path' ), 'number', $s ); ?>
							<?php $this->field( 'reshow_hours', __( 'Hide after close hours', 'adaptive-intent-path' ), 'number', $s ); ?>
							<label><?php esc_html_e( 'Position', 'adaptive-intent-path' ); ?><select name="<?php echo esc_attr( self::OPTION ); ?>[position]"><option value="bottom-right" <?php selected( $s['position'], 'bottom-right' ); ?>><?php esc_html_e( 'Bottom Right', 'adaptive-intent-path' ); ?></option><option value="bottom-left" <?php selected( $s['position'], 'bottom-left' ); ?>><?php esc_html_e( 'Bottom Left', 'adaptive-intent-path' ); ?></option><option value="center" <?php selected( $s['position'], 'center' ); ?>><?php esc_html_e( 'Center', 'adaptive-intent-path' ); ?></option></select></label>
						</div>
						<?php $this->field( 'headline', __( 'Headline', 'adaptive-intent-path' ), 'text', $s ); ?>
						<label><?php esc_html_e( 'Subtext', 'adaptive-intent-path' ); ?><textarea name="<?php echo esc_attr( self::OPTION ); ?>[subtext]" rows="3"><?php echo esc_textarea( $s['subtext'] ); ?></textarea></label>
					</div>
					<div class="adapinpa-card"><h2><?php esc_html_e( 'Intent Buttons & Redirects', 'adaptive-intent-path' ); ?></h2>
						<?php foreach ( array( 'buy' => __( 'Buy', 'adaptive-intent-path' ), 'learn' => __( 'Learn more', 'adaptive-intent-path' ), 'expert' => __( 'Talk to expert', 'adaptive-intent-path' ), 'quote' => __( 'Get quote', 'adaptive-intent-path' ) ) as $key => $title ) : ?>
							<div class="adapinpa-row"><strong><?php echo esc_html( $title ); ?></strong><?php $this->field( $key . '_label', __( 'Button label', 'adaptive-intent-path' ), 'text', $s ); ?><?php $this->field( $key . '_url', __( 'Redirect URL', 'adaptive-intent-path' ), 'url', $s ); ?></div>
						<?php endforeach; ?>
					</div>
					<div class="adapinpa-card"><h2><?php esc_html_e( 'Design', 'adaptive-intent-path' ); ?></h2><div class="adapinpa-grid"><?php $this->field( 'primary_color', __( 'Primary color', 'adaptive-intent-path' ), 'color', $s ); ?><?php $this->field( 'background_color', __( 'Background color', 'adaptive-intent-path' ), 'color', $s ); ?><?php $this->field( 'text_color', __( 'Text color', 'adaptive-intent-path' ), 'color', $s ); ?></div></div>
					<?php submit_button(); ?>
				</form>
			</div>
			<?php
		}

		private function field( $key, $label, $type, $settings ) {
			printf(
				'<label>%1$s<input type="%2$s" name="%3$s[%4$s]" value="%5$s"></label>',
				esc_html( $label ),
				esc_attr( $type ),
				esc_attr( self::OPTION ),
				esc_attr( $key ),
				esc_attr( isset( $settings[ $key ] ) ? $settings[ $key ] : '' )
			);
		}
}

WPCraftEngineer_Adaptive_Intent_Path::instance();