<?php

class Statuses extends Base {

    // Variables.

    private $current_user_serial = 0;
    
    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_name = $_SESSION[self::USER_NAME] ?? "";
        $this->current_user_email = $_SESSION[self::USER_EMAIL] ?? "";

        $this->pagination_page = 1;
    }

    // ==========
    // Add Status
    // ==========

    public function addStatus() {

        $step = filter_input(INPUT_POST, "step") ?: "prompt";

        switch ($step) {

            case "prompt":

                $content = $this->applyXSL("", $this->getXSL("addStatus"));

                $this->displayContent($content);

                break;

            case "add":
                (new MaintenanceService())->saveStatus(0,$_POST);

                break;

            default:

                $this->displayHome();
        }
    }

    // =============
    // Delete Status
    // =============

    public function deleteStatus() {
        (new MaintenanceService())->deleteStatus(MaintenanceService::id($_POST['status_serial']??null));
    }

    // ============================
    // Determine if a Status exists
    // ============================

    public function statusExists() {

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

        $SQL = "select status_serial
              from view_statuses
             where status_serial      != :status_serial
               and lower(status_name)  = :status_name";

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

        $statement->bindValue(":status_serial", $status_serial);
        $statement->bindValue(":status_name", strtolower($status_name));

        $statement->execute();

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

        $exists = (count($recordset) > 0) ? true : false;

        echo json_encode($exists);
    }

    // ======================================
    // Determine if a Status is Active (AJAX)
    // ======================================

    public function statusActive() {
        $stmt=$this->connect()->prepare('SELECT status_default FROM statuses WHERE status_serial=?');
        $stmt->execute([MaintenanceService::id($_POST['status_serial']??null)]);$row=$stmt->fetch();
        if(!$row)throw new AppException('Status not found.',404);
        echo json_encode((bool)$row['status_default']);
    }

    // =============
    // Edit a Status
    // =============

    public function editStatus() {

        $step = filter_input(INPUT_POST, "step") ?: "prompt";

        switch ($step) {

            case "prompt":

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

                $status = $this->getStatus($status_serial);

                if ($status->count() == 0) {
                    $this->logError("Invalid Status ({$status_serial}). " . __METHOD__);
                }

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

                $content = $this->applyXSL($XML, $this->getXSL("editStatus"));

                $this->displayContent($content);

                break;

            case "update":
                (new MaintenanceService())->saveStatus(MaintenanceService::id($_POST['status_serial']??null),$_POST);

                break;

            default:

                $this->displayHome();
        }
    }

    // ================================
    // Return an Active Statuses Object
    // ================================

    public function getActiveStatuses() {

        $SQL = "select view_statuses.*
              from view_statuses
             where status_active is true";

        return $this->getTable("statuses", $SQL);
    }

    // -------------------------
    // Return the Default Status
    // -------------------------

    public function getDefaultStatus() {

        $SQL = "select status_serial
              from view_statuses
             where status_default is true";

        return $this->getTable("statuses", $SQL);
    }

    // =======================
    // Return an Status Object
    // =======================

    public function getStatus($status_serial = 0) {

        $SQL = "select view_statuses.*
              from view_statuses
             where status_serial = {$status_serial}";

        return $this->getTable("statuses", $SQL);
    }

    // ===========================
    // Return a Statuss Object
    // ===========================

    public function getStatuses() {

        $SQL = "select view_statuses.*
              from view_statuses";

        return $this->getTable("statuses", $SQL);
    }

    // ============================
    // Return a Statuss Page Object
    // ============================

    public function getStatusesPage() {
        $this->pagination_size=(int)($_POST['statuses_per_page']??20);

        // Find Criteria

        $find_status = filter_input(INPUT_POST, "find_status") ?: "";
        $find_status = trim($find_status);

        $find_words = implode("|", array_map(static fn($word) => preg_quote($word), explode(" ", $find_status)));

        // Record Count

        $connection = $this->connect();

        $SQL = "select count(*) as count
              from view_statuses
             where status_name    regexp :status_name
                or status_classes regexp :status_classes";

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

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

        $statement->execute();

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

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

        // Pagination

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

        $paging=Pagination::session(__METHOD__,$count,(int)$this->pagination_size,$pagination);
        $this->pagination_size=$paging['size'];$this->pagination_page=$paging['page'];
        $offset=$paging['offset'];$start=$paging['start'];$end=$paging['end'];

        // Data

        $SQL = "select view_statuses.*
              from view_statuses
             where status_name    regexp :status_name
                or status_classes regexp :status_classes
          order by status_name,status_serial
             limit {$this->pagination_size}
            offset {$offset}";

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

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

        $statement->execute();

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

        // Insert Pagination Attributes

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


        return $statuses;
    }

    // ==============
    // Setup Statuses
    // ==============

    public function setupStatuses() {

        $statuses = $this->getStatusesPage();
        $popovers = (new Popovers())->getPopovers();

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

        $content = $this->applyXSL($XML, $this->getXSL("setupStatuses"));

        $this->displayContent($content);
    }
}

?>