path: root/includes/admin/views/giglog_import_gigs.php

<?php

// SPDX-FileCopyrightText: 2021 Andrea Chirulescu <andrea.chirulescu@gmail.com>
// SPDX-FileCopyrightText: 2021 Harald Eilertsen <haraldei@anduin.net>
//
// SPDX-License-Identifier: AGPL-3.0-or-later

if ( !class_exists( 'GiglogAdmin_ImportGigsPage' ) ) {
    require_once __DIR__ . '/../../concert.php';
    require_once __DIR__ . '/../../venue.php';

    class GiglogAdmin_ImportGigsPage {
        static function render_html(): void {
            ?>
            <div class="wrap">
                <h1>Import gigs</h1>
                <p>Import gig data from a tab separated data file.</p>
                <form action="<?php menu_page_url( 'giglog_import' ) ?>" enctype="multipart/form-data" method="post">
                    <?php wp_nonce_field( plugin_basename( __FILE__ ), 'giglog_import_nonce' ); ?>
                    <label for="giglog_import_file">File: </label>
                    <input type="file" name="giglog_import_file" id="giglog_import_file">
                    <?php submit_button(); ?>
                </form>
            </div>
            <?php
        }

        static function submit_form(): void {
            if ('POST' === $_SERVER['REQUEST_METHOD'] && current_user_can('upload_files') && !empty($_FILES['giglog_import_file']['tmp_name'])) {
                if (isset($_POST['giglog_import_nonce']) && wp_verify_nonce($_POST['giglog_import_nonce'], plugin_basename( __FILE__ )) ) {
                    GiglogAdmin_ImportGigsPage::process_upload($_FILES['giglog_import_file']);
                }
                else {
                    header("{$_SERVER['SERVER_PROTOCOL']} 403 Forbidden");
                    wp_die('CSRF validation failed.', 403);
                }
            }
        }

        /**
         * Imports concert data from a file with tab separated values.
         *
         * The file must contain the following columns each separated by _one_
         * tab character:
         *
         *   1. Concertname
         *   2. Venuename or numeric venue id
         *   3. Concert date
         *   4. Ticket link
         *   5. Event info link
         *
         * Empty lines are ignored.
         *
         * @return void
         *
         * @param array<mixed>
         */
        static function process_upload(array $file): void {
            global $wpdb;
            $newconcert= [];
            $fo = new SplFileObject($file['tmp_name']);
            $importerrors = '';
            $rid=0;
            foreach ($fo as $line) {
                $rid++;
                $line = trim( $line );
                if ( empty($line) ) {
                    // Skip empty lines
                    continue;
                }
                $resultArray = explode("\t", $line);
                //unsure if this is needed, considering we are also checking if each individual important field is missing. But if they are not replaced by tabs, then everything gets shifted so probably best to check if a //value is empty and NOT replaced by tab
                if (count($resultArray)<6)
                {
                    $importerrors.= 'Row '.$rid.' is missing a field!'."<br>";
                    continue;
                }
                else{
                    //Below only checks if the date field is made of 4-2-2 digits, irregardless of their values. Actual date check is lower
                    if(  ! preg_match("/\d{4}\-\d{2}-\d{2}/",$resultArray[3]))
                    {
                        $importerrors.= 'Row '.$rid.' has invalid date!'.$resultArray[3]."<br>";

                        continue;
                    }
                    else {
                        if (empty(trim($resultArray[0]))) {
                            $importerrors.= 'Row '.$rid.' is missing concert name!'."<br>";
                            continue;
                        }
                        elseif (empty(trim($resultArray[1]))) {
                            $importerrors.= 'Row '.$rid.' is missing venue name!'."<br>";
                            continue;
                        }
                        elseif (empty(trim($resultArray[2]))) {
                            $importerrors.= 'Row '.$rid.' is missing city name!' ."<br>";
                            continue;
                        }
                        else {
                            $condate     = date('Y-m-d', strtotime($resultArray[3]));
                            if ($condate<date("Y-m-d")) {
                                $importerrors.= 'Row '.$rid.' has date in the past!' .$resultArray[3]."<br>";
                                continue;
                            }
                            else {
                                $cname       = trim($resultArray[0]);
                                $venue       = trim($resultArray[1]);

                                if (is_numeric($venue)) {
                                    $venue = GiglogAdmin_Venue::get($venue);
                                }
                                else {
                                    $venue = GiglogAdmin_Venue::find_or_create($venue,trim($resultArray[2]));
                                }

                                $ticketlink  = trim($resultArray[4]);
                                $eventlink   = trim($resultArray[5]);

                                try {
                                    GiglogAdmin_Concert::create($cname, $venue->id(), $condate, $ticketlink, $eventlink);
                                }
                                catch(Exception $e) {
                                    $importerrors.= 'Row '.$rid.' is duplicate (or failed due unknown error)!'."<br>";
                                }
                            }
                        }
                    }
                }
            }

            if (!empty($importerrors)) {
                echo  ($importerrors);
            }
            else {
                echo ('All rows imported ok');
            }
        }
    }
}