<?php

namespace YesWiki\Core\Controller;

use Symfony\Component\DependencyInjection\ParameterBag\ParameterBagInterface;
use Symfony\Component\HttpFoundation\Response;
use YesWiki\Core\ApiResponse;
use YesWiki\Core\Service\ArchiveService;
use YesWiki\Core\YesWikiController;
use YesWiki\Security\Controller\SecurityController;

class ArchiveController extends YesWikiController
{
    protected $archiveService;
    protected $params;

    public function __construct(
        ArchiveService $archiveService,
        ParameterBagInterface $params
    ) {
        $this->archiveService = $archiveService;
        $this->params = $params;
    }

    public function getArchive(string $id)
    {
        $filePath = $this->archiveService->getFilePath($id);
        if (empty($filePath)) {
            return new ApiResponse(
                ['error' => 'Not existing file ' . htmlspecialchars($id)],
                Response::HTTP_BAD_REQUEST
            );
        } else {
            $zipContent = file_get_contents($filePath);
            $zipSize = filesize($filePath);
            // to prevent existing headers because of handlers /show or others
            $nbObLevels = ob_get_level();
            for ($i = 1; $i < $nbObLevels; $i++) {
                ob_end_clean();
            }
            for ($i = 1; $i < $nbObLevels; $i++) {
                ob_start();
            }

            return new Response(
                $zipContent, // content
                Response::HTTP_OK,
                [   // headers
                    'Access-Control-Allow-Origin' => '*',
                    'Access-Control-Allow-Credentials' => 'true',
                    'Access-Control-Allow-Headers' => 'X-Requested-With, Location, Slug, Accept, Content-Type',
                    'Access-Control-Expose-Headers' => 'Location, Slug, Accept, Content-Type',
                    'Access-Control-Allow-Methods' => 'POST, GET, OPTIONS, DELETE, PUT, PATCH',
                    'Access-Control-Max-Age' => '86400',
                    // end of part inspired from ApiResponse
                    //Set the Content-Type, Content-Disposition and Content-Length headers.
                    'Content-Type' => 'application/zip',
                    'Content-Disposition' => "attachment; filename=$id",
                    'Content-Length' => $zipSize,
                ]
            );
        }
    }

    public function manageArchiveAction(?string $id = null)
    {
        try {
            $action = $this->getService(SecurityController::class)->filterInput(INPUT_POST, 'action', FILTER_DEFAULT, true);
            switch ($action) {
                case 'delete':
                    if (!empty($id)) {
                        $filenames = [$id];
                    } elseif (isset($_POST['filesnames']) && is_array($_POST['filesnames'])) {
                        $filenames = $_POST['filesnames'];
                    } else {
                        return new ApiResponse(
                            ['error' => "\$_POST['filesnames'] should be set and be an array for action 'delete'"],
                            Response::HTTP_BAD_REQUEST
                        );
                    }
                    $results = $this->archiveService->deleteArchives($filenames);

                    return new ApiResponse(
                        $results,
                        $results['main'] ? Response::HTTP_OK : Response::HTTP_BAD_REQUEST
                    );
                    break;
                case 'startArchive':
                    try {        
                        if (isset($_POST['params']) && !is_array($_POST['params'])) {
                            return new ApiResponse(
                                ['error' => "\$_POST['params'] should be set and be an array for action 'startArchive'"],
                                Response::HTTP_BAD_REQUEST
                            );
                        }
                        $params = (isset($_POST['params']) && is_array($_POST['params'])) ? $_POST['params'] : [];
                        $callAsync = !isset($_POST['callAsync']) || in_array($_POST['callAsync'], [1, true, 'true', '1'], true);
                        $uid = $this->startArchive($params, $callAsync);
                        if (empty($uid)) {
                            return new ApiResponse(
                                ['error' => 'no process created when starting archive action'],
                                Response::HTTP_INTERNAL_SERVER_ERROR
                            );
                        }

                        return new ApiResponse(
                            ['uid' => $uid],
                            Response::HTTP_OK
                        );
                    } catch (\Throwable $pThrowable) {                        
                            return new ApiResponse(
                                ['error' => 'A problem occures while starting the backup process. Exception reveived from ' . $pThrowable->getFile () . ' at line ' . $pThrowable->getLine () . ' : ' . $pThrowable->getMessage() ],
                                Response::HTTP_INTERNAL_SERVER_ERROR
                            );                        
                    }
                    break;
                case 'stopArchive':
                    if (empty($_POST['uid']) || !is_string($_POST['uid'])) {
                        return new ApiResponse(
                            ['error' => "\$_POST['uid'] should be set and be an string for action 'stopArchive'"],
                            Response::HTTP_BAD_REQUEST
                        );
                    }
                    $uid = htmlspecialchars($_POST['uid']);
                    $result = $this->archiveService->stopArchive($uid);

                    return new ApiResponse(
                        [],
                        $result ? Response::HTTP_OK : Response::HTTP_BAD_REQUEST
                    );
                    break;
                case 'restore':
                    if (empty($id)) {
                        return new ApiResponse(
                            ['error' => '"api/archives/{id}" should have not empty {id} when using action "restore"'],
                            Response::HTTP_BAD_REQUEST
                        );
                    }
                    // TODO update code here when restore will work
                    return new ApiResponse(
                        ['error' => 'action not defined'],
                        Response::HTTP_BAD_REQUEST
                    );
                    break;

                case 'futureDeletedArchives':
                    $files = $this->archiveService->archivesToDelete(true);

                    return new ApiResponse(
                        ['files' => $files],
                        Response::HTTP_OK
                    );
                    break;

                default:
                    return new ApiResponse(
                        ['error' => "Not supported action : $action"],
                        Response::HTTP_BAD_REQUEST
                    );
                    break;
            }
        } catch (\Throwable $pThrowable) {        
            return new ApiResponse(
                ['error' => "an exception occures : " . $pThrowable->getMessage () . " in file " . $pThrowable->getFile () . " at line " . $pThrowable->getLine() ],
                Response::HTTP_INTERNAL_SERVER_ERROR
            );                    
        }
    }

    public function getArchiveStatus(string $uid, bool $forceStarted)
    {
        if (empty($uid)) {
            return new ApiResponse(
                ['error' => '$uid should not be empty'],
                Response::HTTP_BAD_REQUEST
            );
        }

        return new ApiResponse(
            $this->archiveService->getUIDStatus($uid, $forceStarted),
            Response::HTTP_OK
        );
    }

    /**
     * start archive async or async via CLI.
     *
     * @return string uid
     */
    protected function startArchive(
        array $params = [],
        bool $startAsync = true
    ): string {
        $savefiles = (isset($params['savefiles']) && in_array($params['savefiles'], [1, '1', true, 'true'], true));
        $savedatabase = (isset($params['savedatabase']) && in_array($params['savedatabase'], [1, '1', true, 'true'], true));

        return $this->archiveService->startArchive(
            $savefiles,
            $savedatabase,
            [],
            [],
            $startAsync
        );
    }
}
