<?php
/**
 * Plugin activation handler.
 *
 * @package WP_Recache
 */

defined('ABSPATH') || exit;

class WP_Recache_Activator {

    /**
     * Run activation routines.
     */
    public static function activate() {
        self::create_cache_directory();
        self::set_default_options();
        self::create_advanced_cache();
        self::flush_rewrite_rules();
    }

    /**
     * Create cache directory.
     */
    private static function create_cache_directory() {
        if (!is_dir(WP_RECACHE_CACHE_PATH)) {
            wp_mkdir_p(WP_RECACHE_CACHE_PATH);
        }

        $htaccess = WP_RECACHE_CACHE_PATH . '.htaccess';
        if (!file_exists($htaccess)) {
            file_put_contents($htaccess, "Deny from all\n");
        }

        $index = WP_RECACHE_CACHE_PATH . 'index.php';
        if (!file_exists($index)) {
            file_put_contents($index, '<?php // Silence is golden.');
        }
    }

    /**
     * Set default options.
     */
    private static function set_default_options() {
        $defaults = [
            'cache_enabled' => true,
            'separate_mobile_cache' => false,
            'exclude_urls' => ['/cart', '/checkout', '/my-account'],
            'minify_css' => false,
            'minify_js' => false,
            'lazyload_images' => false,
            'preload_enabled' => false,
        ];

        foreach ($defaults as $key => $value) {
            if (get_option("wp_recache_{$key}") === false) {
                add_option("wp_recache_{$key}", $value);
            }
        }
    }

    /**
     * Create advanced-cache.php drop-in.
     */
    private static function create_advanced_cache() {
        $advanced_cache = WP_CONTENT_DIR . '/advanced-cache.php';

        if (file_exists($advanced_cache)) {
            return;
        }

        $content = '<?php
/**
 * WP Recache advanced cache.
 *
 * This file is automatically generated by WP Recache.
 * Do not edit this file manually.
 */

defined(\'ABSPATH\') || exit;

if (file_exists(WP_CONTENT_DIR . \'/wp-recache-cache.php\')) {
    require_once WP_CONTENT_DIR . \'/wp-recache-cache.php\';
}
';

        file_put_contents($advanced_cache, $content);
    }

    /**
     * Flush rewrite rules.
     */
    private static function flush_rewrite_rules() {
        flush_rewrite_rules();
    }
}