<?php

/**
 * -------------------------------------------------------------------------
 * UrBackup plugin for GLPI
 * -------------------------------------------------------------------------
 */

use GlpiPlugin\Urbackup\AssetTab;
use GlpiPlugin\Urbackup\Config;
use GlpiPlugin\Urbackup\Profile;
use GlpiPlugin\Urbackup\ServerAsset;

if (!defined('GLPI_ROOT')) {
    define('GLPI_ROOT', dirname(__DIR__, 4));
}

include_once GLPI_ROOT . '/inc/includes.php';

if (!Profile::canCurrentUser(READ)) {
    Html::displayRightError();
}

$itemtype = (string) ($_POST['itemtype'] ?? $_GET['itemtype'] ?? '');
$items_id = (int) ($_POST['items_id'] ?? $_GET['items_id'] ?? 0);

if ($itemtype === '' || $items_id <= 0) {
    Html::displayValidationError(__('Invalid parameters'));
}

if (!in_array($itemtype, Config::getEnabledItemtypes(), true)) {
    Html::displayValidationError(__('Item type not enabled for UrBackup'));
}

$item = getItemForItemtype($itemtype);

if (!$item || !$item->getFromDB($items_id)) {
    Html::displayNotFoundError();
}

if (isset($_POST['connect'])) {
    if (!Profile::canCurrentUser(UPDATE) && !Profile::canCurrentUser(CREATE)) {
        Html::displayRightError();
    }

    $server_id = (int) ($_POST['plugin_urbackup_servers_id'] ?? 0);

    if ($server_id <= 0) {
        Html::displayValidationError(__('No server selected'));
    }

    $link = ServerAsset::getLinkForAsset($itemtype, $items_id);

    if ($link !== null) {
        Html::displayValidationError(__('Asset is already linked to a server'));
    }

    $result = ServerAsset::createForAsset($itemtype, $items_id, $server_id);

    if ($result) {
        $item->getFromDB($items_id);
        Html::redirect($item->getLinkURL());
    } else {
        Html::displayValidationError(__('Failed to link asset to server'));
    }
}

if (isset($_POST['disconnect'])) {
    if (!Profile::canCurrentUser(UPDATE) && !Profile::canCurrentUser(DELETE)) {
        Html::displayRightError();
    }

    global $DB;
    
    $link = ServerAsset::getLinkForAsset($itemtype, $items_id, false);

    if ($link === null) {
        Html::displayValidationError(__('Asset is not linked to any server'));
    }

    $result = $DB->delete('glpi_plugin_urbackup_serverassets', ['id' => (int) $link['id']]);
    
    if ($result) {
        $item->getFromDB($items_id);
        Html::redirect($item->getLinkURL());
    } else {
        Html::displayValidationError(__('Failed to disconnect asset from server'));
    }
}

if (isset($_POST['start_file_backup'])) {
    if (!Profile::canCurrentUser(UPDATE)) {
        Html::displayRightError();
    }

    AssetTab::startBackup($item, 'file');
    Html::redirect($item->getFormURL());
}

if (isset($_POST['start_image_backup'])) {
    if (!Profile::canCurrentUser(UPDATE)) {
        Html::displayRightError();
    }

    AssetTab::startBackup($item, 'image');
    Html::redirect($item->getFormURL());
}

if (isset($_POST['execute'])) {
    $action = $_POST['urbackup_action'] ?? '';
    
    switch ($action) {
        case 'incremental_file_backup':
            if (Profile::canCurrentUser(UPDATE)) {
                AssetTab::startBackup($item, 'file');
            }
            break;
        case 'full_file_backup':
            if (Profile::canCurrentUser(UPDATE)) {
                $link = ServerAsset::getLinkForAsset($itemtype, $items_id, false);
                if ($link !== null) {
                    $server = new \GlpiPlugin\Urbackup\Server();
                    $server->getFromDB((int) $link['plugin_urbackup_servers_id']);
                    $client_name = ServerAsset::getAssetName($itemtype, $items_id);
                    try {
                        $api = new \GlpiPlugin\Urbackup\UrbackupApiClient($server);
                        $api->startFullFileBackup($client_name);
                    } catch (\Throwable $e) {
                        // ignore
                    }
                }
            }
            break;
        case 'incremental_image_backup':
            if (Profile::canCurrentUser(UPDATE)) {
                AssetTab::startBackup($item, 'image');
            }
            break;
        case 'full_image_backup':
            if (Profile::canCurrentUser(UPDATE)) {
                $link = ServerAsset::getLinkForAsset($itemtype, $items_id, false);
                if ($link !== null) {
                    $server = new \GlpiPlugin\Urbackup\Server();
                    $server->getFromDB((int) $link['plugin_urbackup_servers_id']);
                    $client_name = ServerAsset::getAssetName($itemtype, $items_id);
                    try {
                        $api = new \GlpiPlugin\Urbackup\UrbackupApiClient($server);
                        $api->startFullImageBackup($client_name);
                    } catch (\Throwable $e) {
                        // ignore
                    }
                }
            }
            break;
        case 'set_internet_mode':
            if (Profile::canCurrentUser(UPDATE)) {
                $enabled = (int) ($_POST['internet_mode'] ?? 0) === 1;
                if (!AssetTab::saveInternetMode($item, $enabled)) {
                    Session::addMessageAfterRedirect(
                        __('Failed to save internet mode', 'urbackup'),
                        false,
                        \ERROR
                    );
                }
            }
            break;
        case 'set_default_dirs':
            if (Profile::canCurrentUser(UPDATE)) {
                $dirs = (string) ($_POST['default_dirs'] ?? '');
                if (!AssetTab::saveDefaultDirs($item, $dirs)) {
                    Session::addMessageAfterRedirect(
                        __('Failed to save default directories', 'urbackup'),
                        false,
                        \ERROR
                    );
                }
            }
            break;
    }
    
    $item->getFromDB($items_id);
    Html::redirect($item->getLinkURL());
}

$item->getFromDB($items_id);
Html::redirect($item->getLinkURL());