<?php
namespace Sodino\Core;

/**
 * Settings Manager
 */
class Settings {
    private static $instance = null;
    private $settings = null;
    private $option_name = 'sodino_settings';
    
    private $defaults = [
        'plugin_enabled' => 1,
        'pricing_enabled' => 1,
        'upsell_enabled' => 1,
        'banner_enabled' => 1,
        'allow_multiple_rules' => 0,
        'strategy' => 'priority',
        'max_discount_percent' => 100,
        'min_product_price' => 0,
        'ab_testing_enabled' => 0,
        'cart_pricing_enabled' => 1,
        'scheduled_campaigns_enabled' => 1,
        'cache_enabled' => 1,
        'cache_duration' => 3600,
        'debug_mode' => 0,
    ];
    
    public static function getInstance() {
        if (self::$instance === null) {
            self::$instance = new self();
        }
        return self::$instance;
    }
    
    /**
     * Get all settings
     */
    public function all() {
        if ($this->settings === null) {
            $this->settings = wp_parse_args(
                get_option($this->option_name, []),
                $this->defaults
            );
        }
        return $this->settings;
    }
    
    /**
     * Get single setting
     */
    public function get($key, $default = null) {
        $settings = $this->all();
        return $settings[$key] ?? $default ?? $this->defaults[$key] ?? null;
    }
    
    /**
     * Set single setting
     */
    public function set($key, $value) {
        $settings = $this->all();
        $settings[$key] = $value;
        $this->settings = $settings;
        return update_option($this->option_name, $settings);
    }
    
    /**
     * Update multiple settings
     */
    public function update(array $settings) {
        $current = $this->all();
        $this->settings = array_merge($current, $settings);
        return update_option($this->option_name, $this->settings);
    }
    
    /**
     * Reset to defaults
     */
    public function reset() {
        $this->settings = $this->defaults;
        return update_option($this->option_name, $this->defaults);
    }
    
    /**
     * Check if plugin is enabled
     */
    public function isEnabled() {
        return (bool) $this->get('plugin_enabled');
    }
    
    /**
     * Check if pricing is enabled
     */
    public function isPricingEnabled() {
        return $this->isEnabled() && (bool) $this->get('pricing_enabled');
    }
    
    /**
     * Check if upsell is enabled
     */
    public function isUpsellEnabled() {
        return $this->isEnabled() && (bool) $this->get('upsell_enabled');
    }
    
    /**
     * Check if banner is enabled
     */
    public function isBannerEnabled() {
        return $this->isEnabled() && (bool) $this->get('banner_enabled');
    }
    
    /**
     * Check if cache is enabled
     */
    public function isCacheEnabled() {
        return (bool) $this->get('cache_enabled');
    }
    
    /**
     * Check if debug mode is enabled
     */
    public function isDebugMode() {
        return (bool) $this->get('debug_mode');
    }
}