<?php
/**
 * Appearance → Customize → Essential Pro Pack.
 *
 * Global design tokens printed as CSS variables on :root (see
 * EPPRO_Asset_Manager::add_customizer_inline_css()). Widget style controls
 * set in Elementor always win over these.
 *
 * @package AdMoreWidgetsSuite
 */

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

class EPPRO_Customizer {

    private static ?array $settings_cache = null;

    public static function init() {
        add_action( 'customize_register', array( __CLASS__, 'register' ) );
        add_action( 'customize_save_after', array( __CLASS__, 'on_save' ) );
    }

    /**
     * Widget colour defaults are written into Elementor's cached post CSS
     * (see EPPRO_Elementor_Helper::brand_color()), so a new brand colour needs
     * that cache rebuilt. Elementor regenerates each file on the next visit.
     */
    public static function on_save(): void {
        self::$settings_cache = null;
        $primary = (string) ( self::get_settings()['primary'] ?? '' );
        if ( get_option( 'eppro_brand_applied', '' ) === $primary ) return;

        update_option( 'eppro_brand_applied', $primary, false );
        if ( class_exists( '\Elementor\Plugin' ) && isset( \Elementor\Plugin::$instance->files_manager ) ) {
            \Elementor\Plugin::$instance->files_manager->clear_cache();
        }
    }

    public static function defaults() {
        return array(
            // Empty = keep the built-in purple (#7c3aed).
            'primary'     => '',
            'input_bg'    => '#ffffff',
            'input_color' => '#000000',
            'btn_bg'      => '#000000',
            'btn_color'   => '#ffffff',
            'card_bg'     => '#ffffff',
            'radius'      => 8,
        );
    }

    public static function get_settings(): array {
        if ( null !== self::$settings_cache ) return self::$settings_cache;
        $saved = get_theme_mod( 'eppro_customizer', array() );
        self::$settings_cache = wp_parse_args( is_array( $saved ) ? $saved : array(), self::defaults() );
        return self::$settings_cache;
    }

    /**
     * CSS variables for the brand colour: the colour itself, a darker hover
     * shade, a light tint and the "r, g, b" triplet used by focus rings and
     * coloured shadows. Empty array when no valid colour is set.
     */
    public static function primary_vars( string $hex ): array {
        $hex = sanitize_hex_color( $hex );
        if ( ! $hex ) return array();

        $h = ltrim( $hex, '#' );
        if ( 3 === strlen( $h ) ) {
            $h = $h[0] . $h[0] . $h[1] . $h[1] . $h[2] . $h[2];
        }
        $rgb = array( hexdec( substr( $h, 0, 2 ) ), hexdec( substr( $h, 2, 2 ) ), hexdec( substr( $h, 4, 2 ) ) );

        $mix = static function ( array $c, int $target, float $amount ): string {
            $out = '#';
            foreach ( $c as $v ) {
                $out .= str_pad( dechex( (int) round( $v + ( $target - $v ) * $amount ) ), 2, '0', STR_PAD_LEFT );
            }
            return $out;
        };

        return array(
            '--eppro-primary'       => $hex,
            '--eppro-primary-dark'  => $mix( $rgb, 0, 0.15 ),
            '--eppro-primary-light' => $mix( $rgb, 255, 0.88 ),
            '--eppro-primary-rgb'   => implode( ', ', $rgb ),
        );
    }

    public static function register( $wp_customize ) {

        $defaults = self::defaults();

        $wp_customize->add_section( 'eppro_section', array(
            'title'       => __( 'Essential Pro Pack', 'admore-widgets-suite' ),
            'description' => __( 'Global defaults for Essential Pro Pack widgets. Colours set in a widget\'s own Style tab always take priority.', 'admore-widgets-suite' ),
            'priority'    => 160,
        ) );

        $colors = array(
            'primary'     => array(
                __( 'Brand Color', 'admore-widgets-suite' ),
                __( 'Replaces the default purple: focus rings, active states, step indicator, popup close hover and other accents. Leave empty to keep the default.', 'admore-widgets-suite' ),
            ),
            'input_bg'    => array( __( 'Input Background', 'admore-widgets-suite' ), '' ),
            'input_color' => array( __( 'Input Text Color', 'admore-widgets-suite' ), '' ),
            'btn_bg'      => array( __( 'Button Background', 'admore-widgets-suite' ), '' ),
            'btn_color'   => array( __( 'Button Icon Color', 'admore-widgets-suite' ), '' ),
            'card_bg'     => array( __( 'Results Card Background', 'admore-widgets-suite' ), '' ),
        );

        foreach ( $colors as $key => $info ) {
            $wp_customize->add_setting( 'eppro_customizer[' . $key . ']', array(
                'default'           => $defaults[ $key ],
                'transport'         => 'refresh',
                'sanitize_callback' => 'sanitize_hex_color',
            ) );

            $wp_customize->add_control( new WP_Customize_Color_Control( $wp_customize, 'eppro_' . $key, array(
                'label'       => $info[0],
                'description' => $info[1],
                'section'     => 'eppro_section',
                'settings'    => 'eppro_customizer[' . $key . ']',
            ) ) );
        }

        $wp_customize->add_setting( 'eppro_customizer[radius]', array(
            'default'           => $defaults['radius'],
            'transport'         => 'refresh',
            'sanitize_callback' => 'absint',
        ) );

        $wp_customize->add_control( 'eppro_radius', array(
            'label'       => __( 'Global Border Radius (px)', 'admore-widgets-suite' ),
            'section'     => 'eppro_section',
            'settings'    => 'eppro_customizer[radius]',
            'type'        => 'number',
            'input_attrs' => array( 'min' => 0, 'max' => 60 ),
        ) );
    }
}