WooDoo/includes/class-woodoo-calendar.php

<?php
/**
 * My Account – Book a Meeting tab.
 * Reads booked slots from Odoo calendar.event and creates new bookings.
 */

defined( 'ABSPATH' ) || exit;

class WooDoo_Calendar {

    const ENDPOINT = 'book-meeting';

    public static function init(): void {
        add_filter( 'woocommerce_account_menu_items',         [ __CLASS__, 'add_menu_item' ], 30 );
        add_action( 'woocommerce_account_' . self::ENDPOINT . '_endpoint', [ __CLASS__, 'render' ] );
        add_filter( 'woocommerce_get_query_vars',             [ __CLASS__, 'add_query_var' ] );

        add_action( 'wp_ajax_woodoo_get_slots',   [ __CLASS__, 'ajax_get_slots' ] );
        add_action( 'wp_ajax_woodoo_book_slot',   [ __CLASS__, 'ajax_book_slot' ] );
        add_action( 'wp_ajax_woodoo_get_meetings',[ __CLASS__, 'ajax_get_meetings' ] );
        add_action( 'wp_ajax_woodoo_cancel_meeting', [ __CLASS__, 'ajax_cancel_meeting' ] );
    }

    public static function add_query_var( array $vars ): array {
        $vars[ self::ENDPOINT ] = self::ENDPOINT;
        return $vars;
    }

    public static function add_menu_item( array $items ): array {
        $items[ self::ENDPOINT ] = 'Reservar Reunión';
        return $items;
    }

    // ── Render ────────────────────────────────────────────────────────────

    public static function render(): void {
        $user_id    = get_current_user_id();
        $partner_id = (int) get_user_meta( $user_id, 'woodoo_odoo_partner_id', true );
        $user       = get_userdata( $user_id );

        $api = woodoo_api();
        if ( ! $api ) {
            echo '<p class="woodoo-notice woodoo-error">' .
                 'Las reservas no están disponibles en este momento. Por favor, contacta con soporte.' .
                 '</p>';
            return;
        }

        // Upcoming bookings for this user
        $upcoming = [];
        if ( $partner_id ) {
            $now = gmdate( 'Y-m-d H:i:s' );
            $upcoming = $api->search_read(
                'calendar.event',
                [
                    [ 'partner_ids', 'in', [ $partner_id ] ],
                    [ 'start', '>=', $now ],
                    [ 'active', '=', true ],
                ],
                [ 'id', 'name', 'start', 'stop', 'location', 'description', 'videocall_location' ],
                20,
                0,
                'start asc'
            );
        }

        include WOODOO_DIR . 'templates/myaccount-calendar.php';
    }

    // ── Slot Calculation ──────────────────────────────────────────────────

    /**
     * Returns available booking slots for a given date (Y-m-d).
     * Filters out already-booked times from Odoo calendar.
     *
     * @return array  List of ['start' => 'Y-m-d H:i', 'end' => 'Y-m-d H:i']
     */
    public static function get_available_slots( string $date ): array {
        $available_days = (array) get_option( 'woodoo_available_days', [ 1, 2, 3, 4, 5 ] );
        $from           = get_option( 'woodoo_available_from', '09:00' );
        $to             = get_option( 'woodoo_available_to',   '17:00' );
        $duration       = (int) get_option( 'woodoo_meeting_duration', 30 );

        $ts        = strtotime( $date );
        $day_of_w  = (int) gmdate( 'N', $ts ); // 1=Mon … 7=Sun

        if ( ! in_array( $day_of_w, array_map( 'intval', $available_days ), true ) ) {
            return [];
        }

        // Build all slots for the day
        $slots     = [];
        $from_ts   = strtotime( $date . ' ' . $from . ':00' );
        $to_ts     = strtotime( $date . ' ' . $to   . ':00' );
        $step      = $duration * 60;

        for ( $start = $from_ts; $start + $step <= $to_ts; $start += $step ) {
            $slots[] = [
                'start' => gmdate( 'Y-m-d H:i', $start ),
                'end'   => gmdate( 'Y-m-d H:i', $start + $step ),
                'start_ts' => $start,
                'end_ts'   => $start + $step,
            ];
        }

        // Fetch existing events from Odoo for this day
        $api = woodoo_api();
        if ( ! $api ) return $slots;

        $day_start = $date . ' 00:00:00';
        $day_end   = $date . ' 23:59:59';

        $cache_key = 'woodoo_booked_' . $date;
        $booked    = get_transient( $cache_key );

        if ( false === $booked ) {
            $booked = $api->search_read(
                'calendar.event',
                [
                    [ 'start', '>=', $day_start ],
                    [ 'start', '<=', $day_end   ],
                    [ 'active', '=', true       ],
                ],
                [ 'id', 'start', 'stop' ],
                100
            );
            set_transient( $cache_key, $booked, 120 );
        }

        // Remove slots that overlap with existing events
        $available = array_filter( $slots, function ( $slot ) use ( $booked ) {
            foreach ( $booked as $event ) {
                $e_start = strtotime( $event['start'] );
                $e_end   = strtotime( $event['stop'] );
                // Overlap: slot_start < e_end AND slot_end > e_start
                if ( $slot['start_ts'] < $e_end && $slot['end_ts'] > $e_start ) {
                    return false;
                }
            }
            return true;
        } );

        // Strip internal timestamps before returning
        return array_values( array_map( fn($s) => [
            'start' => $s['start'],
            'end'   => $s['end'],
        ], $available ) );
    }

    // ── AJAX: Get Slots ───────────────────────────────────────────────────

    public static function ajax_get_slots(): void {
        check_ajax_referer( 'woodoo_calendar', 'nonce' );
        if ( ! is_user_logged_in() ) wp_send_json_error( 'Not logged in', 401 );

        $date = sanitize_text_field( wp_unslash( $_POST['date'] ?? '' ) );
        if ( ! preg_match( '/^\d{4}-\d{2}-\d{2}$/', $date ) ) {
            wp_send_json_error( 'Invalid date format' );
        }

        // Don't allow past dates
        if ( strtotime( $date ) < strtotime( 'today' ) ) {
            wp_send_json_success( [] );
        }

        wp_send_json_success( self::get_available_slots( $date ) );
    }

    // ── AJAX: Book Slot ───────────────────────────────────────────────────

    public static function ajax_book_slot(): void {
        check_ajax_referer( 'woodoo_calendar', 'nonce' );
        if ( ! is_user_logged_in() ) wp_send_json_error( 'Not logged in', 401 );

        $start = sanitize_text_field( wp_unslash( $_POST['start'] ?? '' ) );
        $end   = sanitize_text_field( wp_unslash( $_POST['end']   ?? '' ) );
        $notes = sanitize_textarea_field( wp_unslash( $_POST['notes'] ?? '' ) );

        if ( ! preg_match( '/^\d{4}-\d{2}-\d{2} \d{2}:\d{2}$/', $start )
          || ! preg_match( '/^\d{4}-\d{2}-\d{2} \d{2}:\d{2}$/', $end ) ) {
            wp_send_json_error( 'Invalid date/time format' );
        }

        if ( strtotime( $start ) < time() ) {
            wp_send_json_error( __( 'Cannot book a slot in the past.', 'woodoo' ) );
        }

        $user_id = get_current_user_id();
        $user    = get_userdata( $user_id );
        $api     = woodoo_api();

        if ( ! $api ) wp_send_json_error( 'API not configured' );

        // Find or create Odoo partner for the customer
        $partner_id = (int) get_user_meta( $user_id, 'woodoo_odoo_partner_id', true );
        if ( ! $partner_id ) {
            $partner_id = $api->find_or_create_partner(
                $user->user_email,
                $user->display_name
            );
            if ( $partner_id ) {
                update_user_meta( $user_id, 'woodoo_odoo_partner_id', $partner_id );
            }
        }

        if ( ! $partner_id ) {
            wp_send_json_error( __( 'Could not find your Odoo record.', 'woodoo' ) );
        }

        // Get the Odoo user (organizer) – the API user
        $me_uid = $api->authenticate();
        // Find res.users for this uid to get partner_id of organizer
        $organizer_users = $api->search_read(
            'res.users',
            [ [ 'id', '=', $me_uid ] ],
            [ 'partner_id' ],
            1
        );
        $organizer_partner_id = $organizer_users[0]['partner_id'][0] ?? null;

        $title   = get_option( 'woodoo_meeting_title_prefix', 'Meeting via WooDoo' )
                   . ' – ' . $user->display_name;

        $partner_ids = array_filter( [ $partner_id, $organizer_partner_id ] );

        $event_vals = [
            'name'        => $title,
            'start'       => $start . ':00',
            'stop'        => $end   . ':00',
            'description' => $notes ?: false,
            'partner_ids' => array_map( fn($id) => [ 4, $id, 0 ], $partner_ids ),
            'privacy'     => 'confidential',
        ];

        $event_id = $api->create( 'calendar.event', $event_vals );

        if ( ! $event_id ) {
            wp_send_json_error( __( 'Could not create meeting in Odoo. Please try again.', 'woodoo' ) );
        }

        // Invalidate booked slots cache for this date
        $date = substr( $start, 0, 10 );
        delete_transient( 'woodoo_booked_' . $date );

        wp_send_json_success( [
            'event_id' => $event_id,
            'start'    => $start,
            'end'      => $end,
            'message'  => __( 'Meeting booked! You will receive a confirmation from Odoo.', 'woodoo' ),
        ] );
    }

    // ── AJAX: Get User's Meetings ─────────────────────────────────────────

    public static function ajax_get_meetings(): void {
        check_ajax_referer( 'woodoo_calendar', 'nonce' );
        if ( ! is_user_logged_in() ) wp_send_json_error( 'Not logged in', 401 );

        $user_id    = get_current_user_id();
        $partner_id = (int) get_user_meta( $user_id, 'woodoo_odoo_partner_id', true );
        if ( ! $partner_id ) wp_send_json_success( [] );

        $api = woodoo_api();
        if ( ! $api ) wp_send_json_error( 'API not configured' );

        $now = gmdate( 'Y-m-d H:i:s' );
        $meetings = $api->search_read(
            'calendar.event',
            [
                [ 'partner_ids', 'in', [ $partner_id ] ],
                [ 'start', '>=', $now ],
                [ 'active', '=', true ],
            ],
            [ 'id', 'name', 'start', 'stop', 'location', 'videocall_location' ],
            20,
            0,
            'start asc'
        );

        wp_send_json_success( $meetings );
    }

    // ── AJAX: Cancel Meeting ──────────────────────────────────────────────

    public static function ajax_cancel_meeting(): void {
        check_ajax_referer( 'woodoo_calendar', 'nonce' );
        if ( ! is_user_logged_in() ) wp_send_json_error( 'Not logged in', 401 );

        $event_id   = absint( $_POST['event_id'] ?? 0 );
        $user_id    = get_current_user_id();
        $partner_id = (int) get_user_meta( $user_id, 'woodoo_odoo_partner_id', true );

        if ( ! $event_id || ! $partner_id ) wp_send_json_error( 'Invalid request' );

        $api = woodoo_api();
        if ( ! $api ) wp_send_json_error( 'API not configured' );

        // Verify the event belongs to this user
        $events = $api->search(
            'calendar.event',
            [ [ 'id', '=', $event_id ], [ 'partner_ids', 'in', [ $partner_id ] ] ],
            1
        );

        if ( empty( $events ) ) {
            wp_send_json_error( __( 'Meeting not found.', 'woodoo' ) );
        }

        // Unlink the customer partner from the event (don't delete the event)
        $api->write(
            'calendar.event',
            [ $event_id ],
            [ 'partner_ids' => [ [ 3, $partner_id, 0 ] ] ]
        );

        wp_send_json_success( [ 'message' => __( 'Meeting cancelled.', 'woodoo' ) ] );
    }
}