<?php

namespace WPZaraz\Support;

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

/**
 * Manages plugin settings and defaults.
 */
class Options {

    public const OPTION_KEY = 'wp_zaraz_settings';

    /**
     * Default plugin options.
     */
    public static function defaults(): array {
        return [
            // Cloudflare Connection
            'connection_mode'          => 'manual', // 'manual' or 'api'
            'cf_api_token'             => '',
            'cf_zone_id'               => '',
            'cf_zone_name'             => '',
            'cf_auto_publish'          => true,
            'zaraz_events_path'        => '', // Per-site HTTP Events API path, generated on first use
            'zaraz_debug_key'          => '', // Per-site Zaraz debug key, generated on first use

            // General Tracking
            'track_pageview'           => true,
            'track_scroll'             => true,
            'scroll_thresholds'        => [25, 50, 75, 90],
            'track_time_on_page'       => true,
            'time_thresholds'          => [10, 30, 60, 120, 300],
            'track_outbound'           => true,
            'track_email_clicks'       => true,
            'track_phone_clicks'       => true,
            'track_downloads'          => true,
            'download_extensions'      => 'pdf,zip,csv,docx,xlsx,mp3,mp4',
            'track_search'             => true,
            'track_404'                => true,

            // WooCommerce Funnel
            'wc_track_product_view'         => true,
            'wc_track_add_to_cart'          => true,
            'wc_track_remove_from_cart'     => true,
            'wc_track_view_cart'            => true,
            'wc_track_begin_checkout'       => true,
            'wc_track_purchase'             => true,
            'wc_track_refund'               => true,
            'wc_track_coupons'              => true,
            'wc_server_dispatch'            => true, // Hybrid server-side dispatch
            'server_customer_matching'      => false, // Pro: customer details with server-sent purchases
            'wc_server_fallback_delay'      => 600,  // Seconds to wait for the browser before the server sends
            'wc_track_renewals'             => true, // Send WooCommerce Subscriptions renewal orders (Pro)
            'wc_use_parent_id_for_variations' => false,
            'wc_track_variant_selection'    => true,
            'wc_track_payment_info'         => true, // Pro feature

            // Interaction & Lifecycle Tracking
            'track_unsubmitted_search'      => true,
            'track_search_selection'        => true,
            'track_external_links'          => true,
            'track_login'                   => true,
            'track_registration'            => true,
            'track_comments'                => true,
            'exclude_logged_in_users'       => false,
            'excluded_user_roles'           => ['administrator', 'shop_manager'],

            // Lead Forms
            'track_forms'              => true,
            'forms_cf7'                => true,
            'forms_wpforms'            => true,
            'forms_gravity'            => true,
            'forms_fluent'             => true,
            'forms_elementor'          => true,
            'forms_generic'            => false,

            // User Data & Privacy
            'enhanced_conversions'     => true,

            // Consent Suite & Banner Customization
            'consent_provider'         => 'auto', // 'auto', 'native', 'banner', 'disabled'
            'gcm_v2_enabled'           => true,
            'gcm_ad_storage_default'   => 'denied',
            'gcm_analytics_default'    => 'denied',
            'banner_enabled'           => false,
            'consent_gate_tools'       => false, // Hold Zaraz tools until a consent plugin grants consent
            'banner_geo_eu_only'       => false,
            'banner_cookie_lifetime'   => 180,
            'banner_privacy_page_id'   => 0,
            'banner_privacy_custom_url'=> '',
            'banner_privacy_link_text' => 'Privacy Policy',
            'banner_gcm_enabled'       => true,
            'banner_theme_mode'        => 'auto', // 'auto', 'light', 'dark'
            'banner_bg_color'          => '',
            'banner_text_color'        => '',
            'banner_title'             => 'We value your privacy',
            'banner_text'              => 'We use cookies and edge technologies to improve your experience and analyze traffic.',
            'banner_accept_text'       => 'Accept All',
            'banner_reject_text'       => 'Reject Non-Essential',
            'banner_settings_text'     => 'Customize',
            'banner_reopen_button'     => true,
            'banner_reopen_position'   => 'bottom-left', // 'bottom-left', 'bottom-right'
            'banner_font_family'       => 'inherit',
            'banner_layout'            => 'bottom_floating', // 'bottom_floating', 'bottom_bar', 'modal'
            'banner_border_radius'     => 8,
            'banner_primary_color'     => '#0284c7',

            // Tools & Credentials
            'ga4_measurement_id'       => '',
            'google_ads_conversion_id' => '',
            'google_ads_label'         => '',
            'google_ads_lead_label'    => '',
            'meta_pixel_id'            => '',
            'meta_capi_token'          => '',
            'snapchat_pixel_id'        => '',
            'tiktok_pixel_id'          => '',
            'tiktok_access_token'      => '',
            'pinterest_tag_id'         => '',
            'pinterest_ad_account_id'  => '',
            'pinterest_capi_token'     => '',
            'bing_tag_id'              => '',
            'linkedin_partner_id'      => '',
            'linkedin_purchase_conversion_id' => '',
            'linkedin_lead_conversion_id'     => '',
            'reddit_pixel_id'          => '',
            'x_pixel_id'               => '',
            'x_purchase_event_id'      => '',
            'x_lead_event_id'          => '',

            // Instagram posts rendered by Zaraz on Cloudflare (no Instagram script in the browser)
            'instagram_embeds'         => false,

            // Debugging
            'debug_mode'               => false,

            // Onboarding & Wizard Visibility
            'wizard_completed'         => false,
            'show_wizard_in_menu'      => true,
        ];
    }

    /**
     * Retrieves all saved settings merged with defaults.
     *
     * @return array
     */
    public static function getAll(): array {
        $saved = get_option(self::OPTION_KEY, []);
        if (!is_array($saved)) {
            $saved = [];
        }
        return array_merge(self::defaults(), $saved);
    }

    /**
     * Gets a single option value.
     *
     * @param string $key
     * @param mixed $default
     * @return mixed
     */
    public static function get(string $key, $default = null) {
        $options = self::getAll();
        if (array_key_exists($key, $options)) {
            return $options[$key];
        }
        return $default !== null ? $default : (self::defaults()[$key] ?? null);
    }

    /**
     * Sets a single option value.
     *
     * @param string $key
     * @param mixed $value
     * @return bool
     */
    public static function set(string $key, $value): bool {
        $options = self::getAll();
        $options[$key] = $value;
        return update_option(self::OPTION_KEY, $options);
    }

    /**
     * Returns this site's Zaraz HTTP Events API path, generating a hard-to-guess one on first use.
     *
     * @return string
     */
    public static function eventsApiPath(): string {
        $path = (string) self::get('zaraz_events_path', '');
        if ($path === '') {
            $path = '/zaraz/' . bin2hex(random_bytes(8));
            self::set('zaraz_events_path', $path);
        }
        return $path;
    }

    /**
     * Returns this site's Zaraz debug key, generating a random one on first use.
     *
     * @return string
     */
    public static function debugKey(): string {
        $key = (string) self::get('zaraz_debug_key', '');
        if ($key === '') {
            $key = bin2hex(random_bytes(10));
            self::set('zaraz_debug_key', $key);
        }
        return $key;
    }

    /**
     * Keys generated by the plugin that settings forms must never overwrite.
     */
    private const GENERATED_KEYS = ['zaraz_events_path', 'zaraz_debug_key'];

    /**
     * Keeps only known settings from a submitted form and casts each to its default's type.
     *
     * @param array $submitted Already unslashed values
     * @return array
     */
    public static function sanitizeSubmitted(array $submitted): array {
        $defaults = self::defaults();
        $clean = [];
        foreach ($submitted as $key => $value) {
            $key = (string) $key;
            if (!array_key_exists($key, $defaults) || in_array($key, self::GENERATED_KEYS, true)) {
                continue;
            }
            $default = $defaults[$key];
            if (is_bool($default)) {
                $clean[$key] = filter_var($value, FILTER_VALIDATE_BOOLEAN);
            } elseif (is_int($default)) {
                $clean[$key] = (int) $value;
            } elseif (is_array($default)) {
                if (is_array($value)) {
                    $clean[$key] = array_map('sanitize_text_field', $value);
                }
            } else {
                $clean[$key] = sanitize_text_field((string) $value);
            }
        }
        return $clean;
    }

    /**
     * Updates multiple options at once.
     *
     * @param array $newValues
     * @return bool
     */
    public static function updateMany(array $newValues): bool {
        $options = self::getAll();
        $updated = array_merge($options, $newValues);
        return update_option(self::OPTION_KEY, $updated);
    }
}