<?php
/**
 * Pterodactyl - Panel
 * Copyright (c) 2015 - 2017 Dane Everitt <dane@daneeveritt.com>.
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to deal
 * in the Software without restriction, including without limitation the rights
 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 * copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in all
 * copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
 * SOFTWARE.
 */

namespace Pterodactyl\Http\Controllers\Admin;

use Log;
use Alert;
use Storage;
use Illuminate\Http\Request;
use Pterodactyl\Models\Pack;
use Pterodactyl\Models\Service;
use Pterodactyl\Exceptions\DisplayException;
use Pterodactyl\Http\Controllers\Controller;
use Pterodactyl\Repositories\PackRepository;
use Pterodactyl\Exceptions\DisplayValidationException;

class PackController extends Controller
{
    /**
     * Display listing of all packs on the system.
     *
     * @param  \Illuminate\Http\Request  $request
     * @return \Illuminate\View\View
     */
    public function index(Request $request)
    {
        $packs = Pack::with('option')->withCount('servers');

        if (! is_null($request->input('query'))) {
            $packs->search($request->input('query'));
        }

        return view('admin.packs.index', ['packs' => $packs->paginate(50)]);
    }

    /**
     * Display new pack creation form.
     *
     * @param  \Illuminate\Http\Request  $request
     * @return \Illuminate\View\View
     */
    public function new(Request $request)
    {
        return view('admin.packs.new', [
            'services' => Service::with('options')->get(),
        ]);
    }

    /**
     * Display new pack creation modal for use with template upload.
     *
     * @param  \Illuminate\Http\Request  $request
     * @return \Illuminate\View\View
     */
    public function newTemplate(Request $request)
    {
        return view('admin.packs.modal', [
            'services' => Service::with('options')->get(),
        ]);
    }

    /**
     * Handle create pack request and route user to location.
     *
     * @param  \Illuminate\Http\Request  $request
     * @return \Illuminate\View\View
     */
    public function create(Request $request)
    {
        $repo = new PackRepository;

        try {
            if ($request->input('action') === 'from_template') {
                $pack = $repo->createWithTemplate($request->intersect(['option_id', 'file_upload']));
            } else {
                $pack = $repo->create($request->intersect([
                    'name', 'description', 'version', 'option_id',
                    'selectable', 'visible', 'locked', 'file_upload',
                ]));
            }
            Alert::success('Pack successfully created on the system.')->flash();

            return redirect()->route('admin.packs.view', $pack->id);
        } catch (DisplayValidationException $ex) {
            return redirect()->route('admin.packs.new')->withErrors(json_decode($ex->getMessage()))->withInput();
        } catch (DisplayException $ex) {
            Alert::danger($ex->getMessage())->flash();
        } catch (\Exception $ex) {
            Log::error($ex);
            Alert::danger('An error occured while attempting to add a new service pack. This error has been logged.')->flash();
        }

        return redirect()->route('admin.packs.new')->withInput();
    }

    /**
     * Display pack view template to user.
     *
     * @param  \Illuminate\Http\Request  $request
     * @param  int                       $id
     * @return \Illuminate\View\View
     */
    public function view(Request $request, $id)
    {
        return view('admin.packs.view', [
            'pack' => Pack::with('servers.node', 'servers.user')->findOrFail($id),
            'services' => Service::with('options')->get(),
        ]);
    }

    /**
     * Handle updating or deleting pack information.
     *
     * @param  \Illuminate\Http\Request  $request
     * @param  int                       $id
     * @return \Illuminate\Http\RedirectResponse
     */
    public function update(Request $request, $id)
    {
        $repo = new PackRepository;

        try {
            if ($request->input('action') !== 'delete') {
                $pack = $repo->update($id, $request->intersect([
                    'name', 'description', 'version',
                    'option_id', 'selectable', 'visible', 'locked',
                ]));
                Alert::success('Pack successfully updated.')->flash();
            } else {
                $repo->delete($id);
                Alert::success('Pack was successfully deleted from the system.')->flash();

                return redirect()->route('admin.packs');
            }
        } catch (DisplayValidationException $ex) {
            return redirect()->route('admin.packs.view', $id)->withErrors(json_decode($ex->getMessage()));
        } catch (DisplayException $ex) {
            Alert::danger($ex->getMessage())->flash();
        } catch (\Exception $ex) {
            Log::error($ex);
            Alert::danger('An error occured while attempting to edit this service pack. This error has been logged.')->flash();
        }

        return redirect()->route('admin.packs.view', $id);
    }

    /**
     * Creates an archive of the pack and downloads it to the browser.
     *
     * @param  \Illuminate\Http\Request  $request
     * @param  int                       $id
     * @param  bool                      $files
     * @return \Symfony\Component\HttpFoundation\BinaryFileResponse
     */
    public function export(Request $request, $id, $files = false)
    {
        $pack = Pack::findOrFail($id);
        $json = [
            'name' => $pack->name,
            'version' => $pack->version,
            'description' => $pack->description,
            'selectable' => $pack->selectable,
            'visible' => $pack->visible,
            'locked' => $pack->locked,
        ];

        $filename = tempnam(sys_get_temp_dir(), 'pterodactyl_');
        if ($files === 'with-files') {
            $zip = new \ZipArchive;
            if (! $zip->open($filename, \ZipArchive::CREATE)) {
                abort(503, 'Unable to open file for writing.');
            }

            $files = Storage::files('packs/' . $pack->uuid);
            foreach ($files as $file) {
                $zip->addFile(storage_path('app/' . $file), basename(storage_path('app/' . $file)));
            }

            $zip->addFromString('import.json', json_encode($json, JSON_PRETTY_PRINT));
            $zip->close();

            return response()->download($filename, 'pack-' . $pack->name . '.zip')->deleteFileAfterSend(true);
        } else {
            $fp = fopen($filename, 'a+');
            fwrite($fp, json_encode($json, JSON_PRETTY_PRINT));
            fclose($fp);

            return response()->download($filename, 'pack-' . $pack->name . '.json', [
                'Content-Type' => 'application/json',
            ])->deleteFileAfterSend(true);
        }
    }
}