<?php
/**
 * @package AccessMate
 * @license GPL-2.0-or-later
 */
defined( 'ABSPATH' ) || exit;

class AccessMate_Widget_Injector {

    public static function inject(): void {
        if ( is_admin() ) return;

        $config = get_option( 'accessmate_widget_config', self::defaults() );

        if ( ! ( $config['enabled'] ?? false ) ) return;

        // Don't inject the widget if no features are enabled — the button would open an empty panel.
        if ( empty( $config['features'] ) ) return;

        // Sanitise config fields before output.
        $valid_sizes = [ 'small', 'medium', 'large' ];
        $button_size = $config['button_size'] ?? 'medium';
        $safe_config = [
            'enabled'         => (bool)  ( $config['enabled']  ?? false ),
            'color'           => sanitize_hex_color( $config['color']    ?? '#7c6aff' ) ?? '#7c6aff',
            'position'        => in_array( $config['position'] ?? '', [ 'top-left', 'top-right', 'bottom-left', 'bottom-right' ], true )
                                 ? $config['position']
                                 : 'bottom-right',
            'button_size'     => in_array( $button_size, $valid_sizes, true ) ? $button_size : 'medium',
            'features'        => array_map( 'sanitize_text_field', (array) ( $config['features'] ?? [] ) ),
            'hide_powered_by' => (bool) ( $config['hide_powered_by'] ?? true ),
            'offset_vertical'   => max( 0, min( 500, (int) ( $config['offset_vertical']   ?? 15 ) ) ),
            'offset_horizontal' => max( 0, min( 500, (int) ( $config['offset_horizontal'] ?? 15 ) ) ),
            'dyslexicFontUrl' => esc_url( ACCESSMATE_URL . 'assets/fonts/opendyslexic/files/opendyslexic-latin-400-normal.woff2' ),
        ];

        wp_register_script( 'accessmate-widget', ACCESSMATE_URL . 'assets/widget.js', [], ACCESSMATE_VERSION, true );
        wp_add_inline_script( 'accessmate-widget', 'window.accessmateWidgetConfig=' . wp_json_encode( $safe_config ) . ';', 'before' );
        wp_enqueue_script( 'accessmate-widget' );
    }

    public static function defaults(): array {
        return [
            'enabled'           => false,
            'color'             => '#7c6aff',
            'position'          => 'bottom-right',
            'button_size'       => 'medium',
            'features'          => [ 'font', 'contrast', 'dyslexia', 'reading-guide', 'animations', 'line-height' ],
            'hide_powered_by'   => true,
            'offset_vertical'   => 15,
            'offset_horizontal' => 15,
        ];
    }
}