<?php
/**
 * EPPRO_Extension_Conditions
 *
 * Adds a "Visibility Conditions" panel to every Elementor element.
 * Conditions are evaluated in PHP before render — if any active
 * condition fails the element is hidden server-side (no DOM output).
 *
 * Supported conditions:
 *   - login_status  : logged_in | logged_out
 *   - user_role     : any valid WP role
 *   - date_range    : ISO 8601 date/time range
 *   - device        : desktop | tablet | mobile
 *   - url_parameter : key=value pair
 *   - referrer      : domain substring match
 *
 * @package AdMoreWidgetsSuite
 * @since   1.0.0
 */

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

class EPPRO_Extension_Conditions {

    public static function init(): void {
        add_action( 'elementor/element/after_section_end', [ __CLASS__, 'add_controls' ], 10, 3 );

        // Elementor asks "should this element render?" before printing anything.
        // Answering false keeps the element out of the HTML completely, so
        // content restricted to logged-in users or roles is never sent to
        // other visitors (hiding it with CSS would still expose it in the source).
        foreach ( [ 'widget', 'section', 'column', 'container' ] as $element_type ) {
            add_filter( "elementor/frontend/{$element_type}/should_render", [ __CLASS__, 'should_render' ], 10, 2 );
        }
    }

    // =========================================================================
    // Controls
    // =========================================================================

    public static function add_controls(
        \Elementor\Controls_Stack $element,
        string $section_id,
        array $args
    ): void {
        if ( '_section_responsive' !== $section_id ) return;

        $element->start_controls_section( 'eppro_conditions_section', [
            'label' => EPPRO_Elementor_Helper::panel_label( __( 'Visibility Conditions', 'admore-widgets-suite' ) ),
            'tab'   => \Elementor\Controls_Manager::TAB_ADVANCED,
        ] );

        $element->add_control( 'eppro_conditions_enable', [
            'label'        => __( 'Enable Conditions', 'admore-widgets-suite' ),
            'type'         => \Elementor\Controls_Manager::SWITCHER,
            'return_value' => 'yes',
        ] );

        // ── Login Status ──────────────────────────────────────────────────────
        $element->add_control( 'eppro_cond_login_heading', [
            'label'     => __( 'Login Status', 'admore-widgets-suite' ),
            'type'      => \Elementor\Controls_Manager::HEADING,
            'separator' => 'before',
            'condition' => [ 'eppro_conditions_enable' => 'yes' ],
        ] );

        $element->add_control( 'eppro_cond_login', [
            'label'     => __( 'Show If', 'admore-widgets-suite' ),
            'type'      => \Elementor\Controls_Manager::SELECT,
            'default'   => 'always',
            'options'   => [
                'always'      => __( 'Always', 'admore-widgets-suite' ),
                'logged_in'   => __( 'Logged In', 'admore-widgets-suite' ),
                'logged_out'  => __( 'Logged Out', 'admore-widgets-suite' ),
            ],
            'condition' => [ 'eppro_conditions_enable' => 'yes' ],
        ] );

        // ── User Role ─────────────────────────────────────────────────────────
        $element->add_control( 'eppro_cond_role', [
            'label'       => __( 'Required Role (leave blank = any)', 'admore-widgets-suite' ),
            'type'        => \Elementor\Controls_Manager::SELECT2,
            'multiple'    => true,
            'options'     => self::get_roles(),
            'condition'   => [ 'eppro_conditions_enable' => 'yes', 'eppro_cond_login' => 'logged_in' ],
        ] );

        // ── Date Range ────────────────────────────────────────────────────────
        $element->add_control( 'eppro_cond_date_heading', [
            'label'     => __( 'Date / Time Range', 'admore-widgets-suite' ),
            'type'      => \Elementor\Controls_Manager::HEADING,
            'separator' => 'before',
            'condition' => [ 'eppro_conditions_enable' => 'yes' ],
        ] );

        $element->add_control( 'eppro_cond_date_start', [
            'label'       => __( 'Start (YYYY-MM-DD HH:MM)', 'admore-widgets-suite' ),
            'type'        => \Elementor\Controls_Manager::DATE_TIME,
            'condition'   => [ 'eppro_conditions_enable' => 'yes' ],
        ] );

        $element->add_control( 'eppro_cond_date_end', [
            'label'       => __( 'End (YYYY-MM-DD HH:MM)', 'admore-widgets-suite' ),
            'type'        => \Elementor\Controls_Manager::DATE_TIME,
            'condition'   => [ 'eppro_conditions_enable' => 'yes' ],
        ] );

        // ── Device ────────────────────────────────────────────────────────────
        $element->add_control( 'eppro_cond_device_heading', [
            'label'     => __( 'Device', 'admore-widgets-suite' ),
            'type'      => \Elementor\Controls_Manager::HEADING,
            'separator' => 'before',
            'condition' => [ 'eppro_conditions_enable' => 'yes' ],
        ] );

        $element->add_control( 'eppro_cond_devices', [
            'label'     => __( 'Show On', 'admore-widgets-suite' ),
            'type'      => \Elementor\Controls_Manager::SELECT2,
            'multiple'  => true,
            'default'   => [ 'desktop', 'tablet', 'mobile' ],
            'options'   => [
                'desktop' => __( 'Desktop', 'admore-widgets-suite' ),
                'tablet'  => __( 'Tablet', 'admore-widgets-suite' ),
                'mobile'  => __( 'Mobile', 'admore-widgets-suite' ),
            ],
            'condition' => [ 'eppro_conditions_enable' => 'yes' ],
        ] );

        // ── URL Parameter ─────────────────────────────────────────────────────
        $element->add_control( 'eppro_cond_url_heading', [
            'label'     => __( 'URL Parameter', 'admore-widgets-suite' ),
            'type'      => \Elementor\Controls_Manager::HEADING,
            'separator' => 'before',
            'condition' => [ 'eppro_conditions_enable' => 'yes' ],
        ] );

        $element->add_control( 'eppro_cond_url_param_key', [
            'label'       => __( 'Parameter Name', 'admore-widgets-suite' ),
            'type'        => \Elementor\Controls_Manager::TEXT,
            'placeholder' => 'utm_source',
            'condition'   => [ 'eppro_conditions_enable' => 'yes' ],
        ] );

        $element->add_control( 'eppro_cond_url_param_value', [
            'label'       => __( 'Parameter Value (blank = just exists)', 'admore-widgets-suite' ),
            'type'        => \Elementor\Controls_Manager::TEXT,
            'condition'   => [ 'eppro_conditions_enable' => 'yes' ],
        ] );

        // ── Referrer ──────────────────────────────────────────────────────────
        $element->add_control( 'eppro_cond_referrer_heading', [
            'label'     => __( 'Referrer', 'admore-widgets-suite' ),
            'type'      => \Elementor\Controls_Manager::HEADING,
            'separator' => 'before',
            'condition' => [ 'eppro_conditions_enable' => 'yes' ],
        ] );

        $element->add_control( 'eppro_cond_referrer', [
            'label'       => __( 'Referrer Contains', 'admore-widgets-suite' ),
            'type'        => \Elementor\Controls_Manager::TEXT,
            'placeholder' => 'google.com',
            'condition'   => [ 'eppro_conditions_enable' => 'yes' ],
        ] );

        $element->end_controls_section();
    }

    // =========================================================================
    // Evaluate & Hide
    // =========================================================================

    /**
     * @param bool  $should_render Current decision.
     * @param mixed $element       The Elementor element being rendered.
     */
    public static function should_render( $should_render, $element ) {
        if ( ! $should_render || ! $element instanceof \Elementor\Controls_Stack ) {
            return $should_render;
        }

        // Cheap raw check first; most elements do not use conditions.
        if ( 'yes' !== $element->get_settings( 'eppro_conditions_enable' ) ) {
            return $should_render;
        }

        // Keep every element visible (and selectable) while editing.
        if ( self::is_editing() ) {
            return $should_render;
        }

        return self::passes_all( $element->get_settings_for_display() );
    }

    private static function is_editing(): bool {
        if ( ! class_exists( '\Elementor\Plugin' ) ) return false;
        $elementor = \Elementor\Plugin::$instance;
        if ( isset( $elementor->editor ) && $elementor->editor->is_edit_mode() ) return true;
        if ( isset( $elementor->preview ) && $elementor->preview->is_preview_mode() ) return true;
        return false;
    }

    /** Parse an Elementor DATE_TIME value in the site's timezone. */
    private static function to_timestamp( string $value ): int {
        $value = trim( $value );
        if ( '' === $value ) return 0;
        try {
            return ( new \DateTimeImmutable( $value, wp_timezone() ) )->getTimestamp();
        } catch ( \Exception $e ) {
            return 0;
        }
    }

    // =========================================================================
    // Condition Evaluators
    // =========================================================================

    private static function passes_all( array $s ): bool {
        // Login status
        $login_rule = $s['eppro_cond_login'] ?? 'always';
        if ( 'logged_in' === $login_rule && ! is_user_logged_in() ) return false;
        if ( 'logged_out' === $login_rule && is_user_logged_in() ) return false;

        // User role
        $roles = $s['eppro_cond_role'] ?? [];
        if ( 'logged_in' === $login_rule && ! empty( $roles ) ) {
            $user = wp_get_current_user();
            if ( empty( array_intersect( (array) $user->roles, (array) $roles ) ) ) return false;
        }

        // Date range — the editor stores local site time, so parse it in the site timezone.
        $now   = time();
        $start = self::to_timestamp( (string) ( $s['eppro_cond_date_start'] ?? '' ) );
        if ( $start && $now < $start ) return false;
        $end = self::to_timestamp( (string) ( $s['eppro_cond_date_end'] ?? '' ) );
        if ( $end && $now > $end ) return false;

        // Device (based on UA)
        $devices = $s['eppro_cond_devices'] ?? [ 'desktop', 'tablet', 'mobile' ];
        if ( ! empty( $devices ) && ! in_array( self::detect_device(), (array) $devices, true ) ) return false;

        // URL parameter (read-only visibility check on a public page view — no nonce by design).
        $param_key = sanitize_key( $s['eppro_cond_url_param_key'] ?? '' );
        if ( ! empty( $param_key ) ) {
            // phpcs:disable WordPress.Security.NonceVerification.Recommended
            if ( ! isset( $_GET[ $param_key ] ) ) return false;
            $param_val = $s['eppro_cond_url_param_value'] ?? '';
            if ( '' !== $param_val && sanitize_text_field( wp_unslash( $_GET[ $param_key ] ) ) !== $param_val ) return false;
            // phpcs:enable WordPress.Security.NonceVerification.Recommended
        }

        // Referrer
        $ref_match = sanitize_text_field( $s['eppro_cond_referrer'] ?? '' );
        if ( ! empty( $ref_match ) ) {
            $referrer = sanitize_text_field( wp_unslash( $_SERVER['HTTP_REFERER'] ?? '' ) );
            if ( strpos( $referrer, $ref_match ) === false ) return false;
        }

        return true;
    }

    // =========================================================================
    // Helpers
    // =========================================================================

    private static function detect_device(): string {
        $ua = sanitize_text_field( wp_unslash( $_SERVER['HTTP_USER_AGENT'] ?? '' ) );
        if ( preg_match( '/Mobile|Android.*Mobile|iPhone|iPod|Windows Phone/i', $ua ) ) return 'mobile';
        if ( preg_match( '/iPad|Android|Tablet/i', $ua ) ) return 'tablet';
        return 'desktop';
    }

    private static function get_roles(): array {
        $options = [];
        foreach ( wp_roles()->roles as $slug => $role ) {
            $options[ $slug ] = translate_user_role( $role['name'] );
        }
        return $options;
    }
}