<?php

// ======================
// Import Large CSV Class
// ======================

class ImportLargeCSV extends Base {

    // Variables

    private $current_user_serial = 0;
    private $current_user_id = "";
    private $current_user_name = "";
    private $current_user_email = "";
    private $pagination_size = 20;
    private $pagination_page = 1;

    // =================
    // Class Constructor
    // =================

    public function __construct() {

        set_error_handler(array($this, "displayError"));

        date_default_timezone_set(self::TIMEZONE);

        $this->current_user_serial = $_SESSION[self::USER_SERIAL] ?? 0;
        $this->current_user_id = $_SESSION[self::USER_ID] ?? "";
        $this->current_user_name = $_SESSION[self::USER_NAME] ?? "";
        $this->current_user_email = $_SESSION[self::USER_EMAIL] ?? "";

        $this->pagination_page = $_SESSION[self::PAGINATION_PAGE] ?? 1;
    }

    // =====================
    // Create Import Request
    // =====================

    public function createImportRequest() {

        $subscription_serial = filter_input(INPUT_POST, "subscription_serial", FILTER_SANITIZE_NUMBER_INT) ?: 0;

        $subscription = (new Subscriptions())->getSubscription($subscription_serial);

        if ($subscription->count() === 0) {
            $this->logError("Invalid Subscription ({$subscription_serial}): " . __METHOD__);
        }

        $import_type = filter_input(INPUT_POST, "import_type") ?: "";
        $report_type = filter_input(INPUT_POST, "report_type") ?: "";

        $importjob_import_type = str_replace(' ', '', $subscription->record->subscription_full_title) . "$import_type";
        $importjob_file_name = str_replace(' ', '_', $subscription->record->subscription_full_title) . "_all_records.{$report_type}";
//        $importjob_file_name = str_replace('&', 'And', $subscription->record->subscription_full_title) . "_all_records.{$report_type}";

        $SQL = "insert into importjobs
          
                         (  importjob_subscription,
                            importjob_import_type,
                            importjob_file_name,
                            importjob_file_type,
                            importjob_creator,
                            importjob_created )
                               
                  VALUES ( :importjob_subscription,
                           :importjob_import_type,
                           :importjob_file_name,
                           :importjob_file_type,
                           :importjob_creator,
                           :importjob_created )";

        $statement = $this->connect()->prepare($SQL);

        $statement->bindValue(":importjob_subscription", $subscription_serial);
        $statement->bindValue(":importjob_import_type", $importjob_import_type);
        $statement->bindValue(":importjob_file_name", $importjob_file_name);
        $statement->bindValue(":importjob_file_type", strtoupper($report_type));
        $statement->bindValue(":importjob_creator", $this->current_user_serial);
        $statement->bindValue(":importjob_created", $this->getTimestamp());

        $statement->execute();

        $this->displayNotice("Your import has been queued. You will receive an notification when it is ready.");
    }

    // ============
    // User Imports
    // ============

    public function usersImports() {

        $imports = $this->getUsersImports();
        $popovers = (new Popovers())->getPopovers();

        $this->markImportsAsSeen();

        $XML = $this->mergeXML($imports, "<XML/>");
        $XML = $this->mergeXML($popovers, $XML);

        $html = $this->applyXSL($XML, $this->getXSL("viewImports"));

        $this->displayContent($html);
    }

    // =========================
    // Mark User Imports as Seen
    // =========================

    public function markImportsAsSeen() {

        $SQL = "update importjobs
                   set importjob_notified           = true
                 where importjobs.importjob_creator = {$this->current_user_serial}";

        $statement = $this->connect()->prepare($SQL);

        $statement->execute();
    }

    // =======================
    // Return a Imports Object
    // =======================

    public function getUsersImports() {

        // Find Criteria

        $find_importjob = filter_input(INPUT_POST, "find_importjob") ?: "";
        $find_words = $this->sanitizeString($find_importjob);

        // Show Per Page
        $this->pagination_size = filter_input(INPUT_POST, "importjobs_per_page", FILTER_SANITIZE_NUMBER_INT) ?: $this->pagination_size;

        // Record Count

        $connection = $this->connect();

        $SQL = "select count(*) as count
                  from view_importjobs
                 where view_importjobs.importjob_creator = {$this->current_user_serial}
                   and view_importjobs.subscription_full_title regexp :subscription_full_title";

        $statement = $connection->prepare($SQL);

        $statement->bindValue(":subscription_full_title", $find_words);

        $statement->execute();

        $recordset = $statement->fetch(PDO::FETCH_ASSOC);

        $count = (count($recordset) > 0) ? (integer) $recordset["count"] : (integer) 0;

        // Pagination

        $pagination = filter_input(INPUT_POST, "pagination") ?: "";

        switch ($pagination) {

            case "first" : $this->pagination_page = 1;
                break;
            case "previous" : $this->pagination_page = max(($this->pagination_page - 1), 1);
                break;
            case "next" : $this->pagination_page = ($this->pagination_page + 1);
                break;
            case "last" : $this->pagination_page = ($count / $this->pagination_size);
                break;
        }

        $offset = (($this->pagination_page * $this->pagination_size) - $this->pagination_size);
        $start = ($offset + 1);
        $end = min($count, (($start + $this->pagination_size) - 1));

        // Data

        $SQL = "select view_importjobs.* 
                  from view_importjobs
                 where view_importjobs.importjob_creator = {$this->current_user_serial}
                   and view_importjobs.subscription_full_title regexp :subscription_full_title
                 limit {$this->pagination_size}
                offset {$offset}";

        $statement = $connection->prepare($SQL);

        $statement->bindValue(":subscription_full_title", $find_words);

        $statement->execute();

        $importjobs = $this->getTableXML("importjobs", $statement);

        // Insert Pagination Attributes

        $importjobs->addAttribute("count", $count);
        $importjobs->addAttribute("start", $start);
        $importjobs->addAttribute("end", $end);
        $importjobs->addAttribute("page", $this->pagination_page);

        $_SESSION[self::PAGINATION_PAGE] = $this->pagination_page;

        return $importjobs;
    }

    // =====================================
    // Return if users imports are completed
    // =====================================

    public function checkUsersCompletedImports_AJAX() {

        $SQL = "select count(*) as notify
                  from view_importjobs
                 where view_importjobs.importjob_creator = :current_user_serial
                   and view_importjobs.importjob_status = 'complete'
                   and view_importjobs.importjob_notified = 0";

        $importjobs = $this->getTable("importjobs", $SQL, array('current_user_serial' => $this->current_user_serial));

        // Create the User Object.

        $users_imports = array();

        $users_imports["notify"] = ($importjobs->record->notify == 0) ? false : true;

        if ($_SESSION[self::AJAX]) {
            echo json_encode($users_imports);
        } else {
            return $users_imports;
        }
    }

    // ===============
    // Download Import
    // ===============

    public function downloadImport() {

        $import_code = filter_input(INPUT_POST, "import_code") ?: "";

        $SQL = "select view_importjobs.*
                  from view_importjobs
                 where view_importjobs.importjob_download_token  = :import_code
                   and view_importjobs.importjob_status          = 'complete' limit 1";

        $importjob = $this->getTable("importjob", $SQL, array("import_code" => $import_code));

        $file_path = str_replace('../imports/', './imports/', $importjob->record->importjob_file_path);
        $file_name = $importjob->record->importjob_file_name;

        header('Content-Type: application/octet-stream');
        header("Content-Disposition: attachment; filename=\"$file_name\"");

        readfile($file_path);
    }
}

?>