<?php
/**
 * The CrewCommerce bootstrap class and shared helpers. Loaded once by
 * crewcommerce.php.
 */

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

/**
 * User meta is shared by a whole multisite network, but a user's company and
 * role must be per site. On a single site this returns $base unchanged.
 */
function crewcommerce_site_meta_key($base) {
    return is_multisite() ? $base . '_' . get_current_blog_id() : $base;
}

/**
 * Compatible with HPOS and the block cart and checkout.
 */
add_action('before_woocommerce_init', function () {
    if (class_exists(\Automattic\WooCommerce\Utilities\FeaturesUtil::class)) {
        \Automattic\WooCommerce\Utilities\FeaturesUtil::declare_compatibility('custom_order_tables', CREWCOMMERCE_PLUGIN_FILE, true);
        \Automattic\WooCommerce\Utilities\FeaturesUtil::declare_compatibility('cart_checkout_blocks', CREWCOMMERCE_PLUGIN_FILE, true);
    }
});

/**
 * Main CrewCommerce class.
 */
final class CrewCommerce {

    private static $instance = null;

    public static function get_instance() {
        if (null === self::$instance) {
            self::$instance = new self();
        }
        return self::$instance;
    }

    private function __construct() {
        add_action('plugins_loaded', array($this, 'init'));
        register_activation_hook(CREWCOMMERCE_PLUGIN_FILE, array($this, 'activate'));
        register_deactivation_hook(CREWCOMMERCE_PLUGIN_FILE, array($this, 'deactivate'));

        // A site created later on a network where CrewCommerce is already
        // network-active never runs the activation hook.
        add_action('wp_initialize_site', array($this, 'activate_new_site'), 100);
    }

    public function init() {
        if (!class_exists('WooCommerce')) {
            add_action('admin_notices', array($this, 'woocommerce_missing_notice'));
            return;
        }

        $this->includes();
        $this->maybe_upgrade_schema();

        CrewCommerce_Team_Accounts::get_instance();
        CrewCommerce_Approvals::get_instance();
        CrewCommerce_Order_Tracking::get_instance();
        CrewCommerce_Frontend_Dashboard::get_instance();
        CrewCommerce_Invitations::get_instance();
        CrewCommerce_Privacy::get_instance();
        CrewCommerce_Admin_Dashboard::get_instance();

        add_action('wp_enqueue_scripts', array($this, 'enqueue_scripts'));
        add_action('admin_enqueue_scripts', array($this, 'admin_enqueue_scripts'));
        add_filter('plugin_action_links_' . plugin_basename(CREWCOMMERCE_PLUGIN_FILE), array($this, 'plugin_action_links'));

        /**
         * Fires once CrewCommerce has loaded all of its components. Add-ons
         * that extend CrewCommerce should hook in here.
         */
        do_action('crewcommerce_loaded');
    }

    /**
     * Create or update the tables when the schema version changes, so an
     * update doesn't need a reactivation.
     */
    private function maybe_upgrade_schema() {
        if (get_option('crewcommerce_schema_version') === CREWCOMMERCE_SCHEMA_VERSION) {
            return;
        }
        $this->create_tables();
        update_option('crewcommerce_schema_version', CREWCOMMERCE_SCHEMA_VERSION);
    }

    private function includes() {
        require_once CREWCOMMERCE_PLUGIN_DIR . 'includes/class-team-accounts.php';
        require_once CREWCOMMERCE_PLUGIN_DIR . 'includes/class-approvals.php';
        require_once CREWCOMMERCE_PLUGIN_DIR . 'includes/class-order-tracking.php';
        require_once CREWCOMMERCE_PLUGIN_DIR . 'includes/class-frontend-dashboard.php';
        require_once CREWCOMMERCE_PLUGIN_DIR . 'includes/class-invitations.php';
        require_once CREWCOMMERCE_PLUGIN_DIR . 'includes/class-privacy.php';
        require_once CREWCOMMERCE_PLUGIN_DIR . 'admin/admin-dashboard.php';

        // Development-only demo data tool. Not shipped in the release zip, and
        // only loaded when both constants are set in wp-config.php.
        $dummy_data_file = CREWCOMMERCE_PLUGIN_DIR . 'includes/class-dummy-data.php';
        if (defined('WP_DEBUG') && WP_DEBUG && defined('CREWCOMMERCE_DEV_TOOLS') && CREWCOMMERCE_DEV_TOOLS && file_exists($dummy_data_file)) {
            require_once $dummy_data_file;
        }
    }

    /**
     * Front-end assets, only on My Account and the order-received page.
     */
    public function enqueue_scripts() {
        if (!function_exists('is_account_page') || !(is_account_page() || is_wc_endpoint_url('order-received'))) {
            return;
        }

        wp_enqueue_style('crewcommerce', CREWCOMMERCE_PLUGIN_URL . 'assets/css/crewcommerce.css', array(), CREWCOMMERCE_VERSION);

        if (!is_user_logged_in()) {
            return;
        }

        wp_enqueue_script('crewcommerce', CREWCOMMERCE_PLUGIN_URL . 'assets/js/crewcommerce.js', array('jquery'), CREWCOMMERCE_VERSION, true);
        wp_localize_script('crewcommerce', 'crewcommerce_ajax', array(
            'ajax_url' => admin_url('admin-ajax.php'),
            'nonce'    => wp_create_nonce('crewcommerce_nonce'),
            'i18n'     => array(
                'fill_required'      => __('Please fill in all required fields.', 'crewcommerce'),
                'sending'            => __('Sending…', 'crewcommerce'),
                'send_invitation'    => __('Send Invitation', 'crewcommerce'),
                'admin_demote'       => __('This person is the company Admin. Changing their role hands the Admin role to someone else. Continue?', 'crewcommerce'),
                'admin_transferred'  => __('The Admin role was handed over. The page will reload.', 'crewcommerce'),
                'confirm_remove'     => __('Remove this team member?', 'crewcommerce'),
                'confirm_approve'    => __('Approve this order?', 'crewcommerce'),
                'confirm_reject'     => __('Reject this order?', 'crewcommerce'),
                'reason_required'    => __('Please give a reason for rejecting.', 'crewcommerce'),
                'confirm_claim'      => __('Claim this order? You will become responsible for approving or rejecting it.', 'crewcommerce'),
                'approved'           => __('Approved', 'crewcommerce'),
                'rejected'           => __('Rejected', 'crewcommerce'),
                'waiting'            => __('waiting', 'crewcommerce'),
                'pending_approvals'  => __('Pending Approvals', 'crewcommerce'),
                /* translators: %s: order number */
                'confirm_cancel'     => __('Cancel the approval request for order #%s? The order will be put on hold.', 'crewcommerce'),
                'cancelled'          => __('Cancelled', 'crewcommerce'),
                'error'              => __('Something went wrong. Please try again.', 'crewcommerce'),
            ),
        ));
    }

    /**
     * Admin assets: CrewCommerce's own screens, plus the WooCommerce order
     * screens where the CrewCommerce order box appears.
     */
    public function admin_enqueue_scripts($hook) {
        $screen       = function_exists('get_current_screen') ? get_current_screen() : null;
        $order_screen = $screen && in_array($screen->id, array('shop_order', 'woocommerce_page_wc-orders', 'edit-shop_order'), true);

        if (strpos($hook, 'crewcommerce') === false && !$order_screen) {
            return;
        }

        wp_enqueue_style('crewcommerce-admin', CREWCOMMERCE_PLUGIN_URL . 'assets/css/admin.css', array(), CREWCOMMERCE_VERSION);

        if ($order_screen) {
            return;
        }

        wp_enqueue_script('crewcommerce-admin', CREWCOMMERCE_PLUGIN_URL . 'assets/js/admin.js', array('jquery'), CREWCOMMERCE_VERSION, true);
        wp_localize_script('crewcommerce-admin', 'crewcommerce_admin_ajax', array(
            'ajax_url' => admin_url('admin-ajax.php'),
            'nonce'    => wp_create_nonce('crewcommerce_admin_nonce'),
            'i18n'     => array(
                'required'          => __('Required.', 'crewcommerce'),
                /* translators: %s: company name */
                'confirm_delete'    => __('Delete “%s” and all its team memberships? This cannot be undone. Orders and customer accounts are kept.', 'crewcommerce'),
                'sending'           => __('Sending…', 'crewcommerce'),
                'send_invitation'   => __('Send Invitation', 'crewcommerce'),
                'saved'             => __('Saved', 'crewcommerce'),
                'confirm_remove'    => __('Remove this team member?', 'crewcommerce'),
                'approve_notes'     => __('Approval notes (optional):', 'crewcommerce'),
                'reject_reason'     => __('Rejection reason (required):', 'crewcommerce'),
                'reason_required'   => __('A rejection reason is required.', 'crewcommerce'),
                'confirm_claim'     => __('Claim this order? You will become responsible for approving or rejecting it.', 'crewcommerce'),
            ),
        ));
    }

    public function plugin_action_links($links) {
        $settings = sprintf('<a href="%s">%s</a>', esc_url(admin_url('admin.php?page=crewcommerce-settings')), esc_html__('Settings', 'crewcommerce'));
        array_unshift($links, $settings);
        return $links;
    }

    /**
     * On a multisite network activation WordPress runs this once in total, so
     * loop over every site.
     */
    public function activate($network_wide = false) {
        if (is_multisite() && $network_wide) {
            foreach (get_sites(array('fields' => 'ids', 'number' => 0)) as $site_id) {
                switch_to_blog($site_id);
                $this->activate_single_site();
                restore_current_blog();
            }
            return;
        }

        $this->activate_single_site();
    }

    private function activate_single_site() {
        $this->create_tables();

        add_option('crewcommerce_settings', array(
            'approval_threshold'     => 1000,
            'require_approval_roles' => array('requester'),
        ));
        add_option('crewcommerce_schema_version', CREWCOMMERCE_SCHEMA_VERSION);

        // 'init' has already run during activation, so let the next request
        // flush the rewrite rules once the endpoints are registered.
        delete_option('crewcommerce_endpoints_version');
        flush_rewrite_rules();
    }

    public function activate_new_site($new_site) {
        if (!is_multisite()) {
            return;
        }
        if (!function_exists('is_plugin_active_for_network')) {
            require_once ABSPATH . 'wp-admin/includes/plugin.php';
        }
        if (!is_plugin_active_for_network(plugin_basename(CREWCOMMERCE_PLUGIN_FILE))) {
            return;
        }

        switch_to_blog($new_site->blog_id);
        $this->activate_single_site();
        restore_current_blog();
    }

    public function deactivate($network_wide = false) {
        if (is_multisite() && $network_wide) {
            foreach (get_sites(array('fields' => 'ids', 'number' => 0)) as $site_id) {
                switch_to_blog($site_id);
                delete_option('crewcommerce_endpoints_version');
                restore_current_blog();
            }
        } else {
            delete_option('crewcommerce_endpoints_version');
        }
        flush_rewrite_rules();
    }

    /**
     * Team memberships and approval workflows. dbDelta() only adds what is
     * missing, so this is safe to run on every schema upgrade.
     */
    private function create_tables() {
        global $wpdb;

        $charset_collate = $wpdb->get_charset_collate();

        // spending_limit is kept on the membership row so data from earlier
        // versions (and the Pro add-on) stays where it was.
        $members = "CREATE TABLE {$wpdb->prefix}crewcommerce_team_members (
            id mediumint(9) NOT NULL AUTO_INCREMENT,
            user_id bigint(20) NOT NULL,
            company_id bigint(20) NOT NULL,
            role varchar(50) NOT NULL DEFAULT 'requester',
            permissions text,
            spending_limit decimal(10,2) DEFAULT NULL,
            created_at datetime DEFAULT CURRENT_TIMESTAMP,
            updated_at datetime DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP,
            PRIMARY KEY  (id),
            UNIQUE KEY user_company (user_id, company_id),
            KEY user_id (user_id),
            KEY company_id (company_id)
        ) {$charset_collate};";

        $workflows = "CREATE TABLE {$wpdb->prefix}crewcommerce_approval_workflows (
            id mediumint(9) NOT NULL AUTO_INCREMENT,
            order_id bigint(20) NOT NULL,
            requester_id bigint(20) NOT NULL,
            approver_id bigint(20),
            status varchar(50) NOT NULL DEFAULT 'pending',
            notes text,
            created_at datetime DEFAULT CURRENT_TIMESTAMP,
            updated_at datetime DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP,
            PRIMARY KEY  (id),
            KEY order_id (order_id),
            KEY requester_id (requester_id),
            KEY approver_id (approver_id)
        ) {$charset_collate};";

        require_once ABSPATH . 'wp-admin/includes/upgrade.php';
        dbDelta($members);
        dbDelta($workflows);
    }

    /** Only on the Plugins screen, for people who can act on it. */
    public function woocommerce_missing_notice() {
        $screen = function_exists('get_current_screen') ? get_current_screen() : null;
        if (!$screen || 'plugins' !== $screen->id || !current_user_can('activate_plugins')) {
            return;
        }
        $plugin = 'woocommerce/woocommerce.php';
        if (file_exists(WP_PLUGIN_DIR . '/' . $plugin)) {
            $message = __('CrewCommerce needs WooCommerce, which is installed but not active.', 'crewcommerce');
            $label   = __('Activate WooCommerce', 'crewcommerce');
            $url     = wp_nonce_url(admin_url('plugins.php?action=activate&plugin=' . rawurlencode($plugin)), 'activate-plugin_' . $plugin);
            $can     = current_user_can('activate_plugin', $plugin);
        } else {
            $message = __('CrewCommerce needs WooCommerce, which is not installed.', 'crewcommerce');
            $label   = __('Install WooCommerce', 'crewcommerce');
            $url     = wp_nonce_url(self_admin_url('update.php?action=install-plugin&plugin=woocommerce'), 'install-plugin_woocommerce');
            $can     = current_user_can('install_plugins');
        }
        echo '<div class="notice notice-error"><p>' . esc_html($message);
        if ($can) {
            echo ' <a class="button button-primary" href="' . esc_url($url) . '">' . esc_html($label) . '</a>';
        }
        echo '</p></div>';
    }
}