<?php
/**
 * Pterodactyl Panel
 * Copyright (c) 2015 - 2016 Dane Everitt <dane@daneeveritt.com>
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */
namespace Pterodactyl\Http\Controllers\Admin;

use Alert;
use Debugbar;
use Log;
use DB;

use Pterodactyl\Models;
use Pterodactyl\Repositories\NodeRepository;

use Pterodactyl\Http\Controllers\Controller;
use Illuminate\Http\Request;

class NodesController extends Controller
{

    /**
     * Controller Constructor
     */
    public function __construct()
    {
        //
    }

    public function getIndex(Request $request)
    {
        return view('admin.nodes.index', [
            'nodes' => Models\Node::select(
                'nodes.*',
                'locations.long as a_locationName',
                DB::raw('(SELECT COUNT(*) FROM servers WHERE servers.node = nodes.id) as a_serverCount')
            )->join('locations', 'nodes.location', '=', 'locations.id')->paginate(20),
        ]);
    }

    public function getNew(Request $request)
    {
        return view('admin.nodes.new', [
            'locations' => Models\Location::all()
        ]);
    }

    public function postNew(Request $request)
    {
        try {
            $node = new NodeRepository;
            $new = $node->create($request->except([
                '_token'
            ]));
            Alert::success('Successfully created new node. You should allocate some IP addresses to it now.')->flash();
            return redirect()->route('admin.nodes.view', [
                'id' => $new
            ]);
        } catch (\Pterodactyl\Exceptions\DisplayValidationException $e) {
            return redirect()->route('admin.nodes.new')->withErrors(json_decode($e->getMessage()))->withInput();
        } catch (\Pterodactyl\Exceptions\DisplayException $e) {
            Alert::danger($e->getMessage())->flash();
        } catch (\Exception $e) {
            Log::error($e);
            Alert::danger('An unhandled exception occured while attempting to add this node. Please try again.')->flash();
        }
        return redirect()->route('admin.nodes.new')->withInput();
    }

    public function getView(Request $request, $id)
    {
        $node = Models\Node::findOrFail($id);
        $allocations = [];
        $alloc = Models\Allocation::select('ip', 'port', 'assigned_to')->where('node', $node->id)->orderBy('ip', 'asc')->orderBy('port', 'asc')->get();
        if ($alloc) {
            foreach($alloc as &$alloc) {
                if (!array_key_exists($alloc->ip, $allocations)) {
                    $allocations[$alloc->ip] = [[
                        'port' => $alloc->port,
                        'assigned_to' => $alloc->assigned_to
                    ]];
                } else {
                    array_push($allocations[$alloc->ip], [
                        'port' => $alloc->port,
                        'assigned_to' => $alloc->assigned_to
                    ]);
                }
            }
        }
        return view('admin.nodes.view', [
            'node' => $node,
            'servers' => Models\Server::select('servers.*', 'users.email as a_ownerEmail', 'services.name as a_serviceName')
                ->join('users', 'users.id', '=', 'servers.owner')
                ->join('services', 'services.id', '=', 'servers.service')
                ->where('node', $id)->paginate(10),
            'stats' => Models\Server::select(DB::raw('SUM(memory) as memory, SUM(disk) as disk'))->where('node', $node->id)->first(),
            'locations' => Models\Location::all(),
            'allocations' => json_decode(json_encode($allocations), false),
        ]);
    }

    public function postView(Request $request, $id)
    {
        try {
            $node = new NodeRepository;
            $node->update($id, $request->except([
                '_token'
            ]));
            Alert::success('Successfully update this node\'s information. If you changed any daemon settings you will need to restart it now.')->flash();
            return redirect()->route('admin.nodes.view', [
                'id' => $id,
                'tab' => 'tab_settings'
            ]);
        } catch (\Pterodactyl\Exceptions\DisplayValidationException $e) {
            return redirect()->route('admin.nodes.view', $id)->withErrors(json_decode($e->getMessage()))->withInput();
        } catch (\Pterodactyl\Exceptions\DisplayException $e) {
            Alert::danger($e->getMessage())->flash();
        } catch (\Exception $e) {
            Log::error($e);
            Alert::danger('An unhandled exception occured while attempting to edit this node. Please try again.')->flash();
        }
        return redirect()->route('admin.nodes.view', [
            'id' => $id,
            'tab' => 'tab_settings'
        ])->withInput();
    }

    public function deleteAllocation(Request $request, $id, $ip, $port = null)
    {
        $query = Models\Allocation::where('node', $id)->whereNull('assigned_to')->where('ip', $ip);
        if (is_null($port) || $port === 'undefined') {
            $allocation = $query;
        } else {
            $allocation = $query->where('port', $port)->first();
        }

        if (!$allocation) {
            return response()->json([
                'error' => 'Unable to find an allocation matching those details to delete.'
            ], 400);
        }
        $allocation->delete();
        return response('', 204);
    }

    public function getAllocationsJson(Request $request, $id)
    {
        $allocations = Models\Allocation::select('ip')->where('node', $id)->groupBy('ip')->get();
        return response()->json($allocations);
    }

    public function postAllocations(Request $request, $id)
    {
        $processedData = [];
        foreach($request->input('allocate_ip') as $ip) {
            if (!array_key_exists($ip, $processedData)) {
                $processedData[$ip] = [];
            }
        }

        foreach($request->input('allocate_port') as $portid => $ports) {
            if (array_key_exists($portid, $request->input('allocate_ip'))) {
                $json = json_decode($ports);
                if (json_last_error() === 0 && !empty($json)) {
                    foreach($json as &$parsed) {
                        array_push($processedData[$request->input('allocate_ip')[$portid]], $parsed->value);
                    }
                }
            }
        }

        try {
            if(empty($processedData)) {
                throw new \Pterodactyl\Exceptions\DisplayException('It seems that no data was passed to this function.');
            }
            $node = new NodeRepository;
            $node->addAllocations($id, $processedData);
            Alert::success('Successfully added new allocations to this node.')->flash();
        } catch (\Pterodactyl\Exceptions\DisplayException $e) {
            Alert::danger($e->getMessage())->flash();
        } catch (\Exception $e) {
            Log::error($e);
            Alert::danger('An unhandled exception occured while attempting to add allocations this node. Please try again.')->flash();
        } finally {
            return redirect()->route('admin.nodes.view', [
                'id' => $id,
                'tab' => 'tab_allocation'
            ]);
        }
    }

    public function deleteNode(Request $request, $id)
    {
        $node = Models\Node::findOrFail($id);
        $servers = Models\Server::where('node', $id)->count();
        if ($servers > 0) {
            Alert::danger('You cannot delete a node with servers currently attached to it.')->flash();
            return redirect()->route('admin.nodes.view', [
                'id' => $id,
                'tab' => 'tab_delete'
            ]);
        }

        $node->delete();
        Alert::success('Node successfully deleted.')->flash();
        return redirect()->route('admin.nodes');

    }

}