atcheck/app/Http/Controllers/User/UserClassesController.php

<?php

namespace App\Http\Controllers\User;

use App\Attendance;
use App\Http\Controllers\Controller;
use App\Http\Controllers\UserCache;
use Illuminate\Http\Request;

use App\Subject;
use App\Classes;
use App\Room;

use Illuminate\Support\Facades\Auth;
use Illuminate\Support\Facades\DB;

class UserClassesController extends Controller
{
    public function index($groupBy='subject_id')
    {
        $user_id = Auth::id();
        $subjects = Subject::where('user_id', $user_id)->get();
        $subjects_ids = $subjects->pluck('id')->toArray();
        $classes = Classes::whereIn('subject_id', $subjects_ids)->orderBy('created_at','DESC')->get();
        foreach($classes as $classes_item) {
            $current_date = date('Y-m-d H:i:s');
            $classes_date = $classes_item->created_at;
            $hours_difference = checkHoursDifference($classes_date, $current_date);
            if ($hours_difference > 1.5 ) {
                $classes_item->classes_code = null;
                $classes_item->save();
                $classes_item->refresh();
            }
        }
        $classes_grouped = $classes->groupBy($groupBy);
        $defaultDate = date("Y-m-d");
        return view('user.user_classes', ['classes' => $classes, 'classes_grouped' => $classes_grouped, 'subjects' => $subjects, 'grouped_by' => $groupBy, 'defaultDate' => $defaultDate]);
    }

    public function add_classes(Request $request)
    {
        $subject_id = $request->input('subject_id');
        $date = $request->input('date');
        $mode = $request->input('mode');
        $classes_id =  Classes::create([
            'subject_id' => $subject_id,
            'date' => $date,
            'mode' => $mode
        ])->id;
        return redirect(route('user_start_classes', ['classes_id' => $classes_id]));
    }

    public function delete_classes($classes_id)
    {
        Classes::find($classes_id)->delete();
        return redirect()->back();
    }

    public function edit_classes($classes_id)
    {
        Classes::find($classes_id);
        return redirect()->back();
    }

    public function start_classes($classes_id)
    {
        $classes = Classes::find($classes_id);
        $classes_code = $classes->classes_code;
        if(!$classes_code){
            $classes_code = generateRandomString(10);
            $classes->classes_code = $classes_code;
            $classes->save();
            $classes->refresh();
        }

//        $userCache = new UserCache();
//        $cache = $userCache->get($classes_code);
//        if($cache) {
//            $student_id_number = $cache->index;
//            $student_name = $cache->name;
//            $student_surname = $cache->surname;
//            $classes = DB::table("classes")->where("classes_code", $cache->classcode)->first();
//            $attendances = Attendance::where('classes_id', $classes->id)->get();
//            $seat_numbers = $attendances->pluck('seat_number')->toArray();
//            $subject = Subject::find($classes->subject_id);
//
//            if($classes->test_mode) {
//                $room_capacity = Room::find($subject->room_id)->capacity;
//                $random_seat = rand(1, $room_capacity);
//                while(in_array($random_seat, $seat_numbers)) {
//                    $random_seat = rand(1, $room_capacity);
//                }
//                Attendance::create([
//                    'classes_id' => $classes->id,
//                    'student_id_number' => $student_id_number,
//                    'student_name' => $student_name,
//                    'student_surname' => $student_surname,
//                    'seat_number' => $random_seat
//                ]);
//                return view('map.summary_map', ['student_name' => $student_name, 'student_surname' => $student_surname, 'seat_number' => $random_seat, 'student_id_number' => $student_id_number, 'classes_id' => $classes->id]);
//            }
//
//            $room_arrangement = Room::find($subject->room_id)->arrangement;
//            if(!$room_arrangement) {
//                $room_arrangement = Room::where('name', 'Inna sala')->first()->arrangement;
//            }
//            $room_rows = count(explode("++", $room_arrangement));
//            if($room_rows > 4) { //max 4 rows on one page
//                $multi_parts = true;
//                $parts_number = ceil($room_rows/4);
//            } else {
//                $multi_parts = false;
//            }
//            $userCache->delete($cache->classcode);
//            return view('map.seat_map', ['student_name' => $student_name, 'student_surname' => $student_surname, 'student_id_number' => $student_id_number, 'classes_id' => $classes->id, 'seat_numbers' => $seat_numbers, 'room_arrangement' => $room_arrangement, 'multi_parts' => $multi_parts, 'parts_number' =>$parts_number]);
//        }
        return view('map.start_map', ['classes_code' => $classes_code, 'classes' => $classes]);
    }

    public function start_classes_verified(Request $request)
    {
        $student_id_number = $request->input('student_id_number');
        $student_name = $request->input('student_name');
        $student_surname = $request->input('student_surname');
        $classes = Classes::find($request->get('classes_id'));
        $subject = Subject::find($classes->subject_id);
        $room_capacity = Room::find($subject->room_id)->capacity;
        $attendances = Attendance::where('classes_id', $classes->id)->get();
        $student_ids = $attendances->pluck('student_id_number')->toArray();
        $seat_numbers = $attendances->pluck('seat_number')->toArray();

        if(in_array($student_id_number, $student_ids)) { // if student attendance record already exists
            $student_seat_number = Attendance::where('student_id_number', $student_id_number)->first()->seat_number;
            $warning = 'Ten numer indeksu został już wcześniej zapisany na te zajęcia.';
            return view('map.summary_map', ['student_name' => $student_name, 'student_surname' => $student_surname, 'seat_number' => $student_seat_number, 'student_id_number' => $student_id_number, 'classes_id' => $classes->id, 'mode' => $classes->mode, 'warning' => $warning]);
        } else {
            if (count($seat_numbers) >= $room_capacity) { // if there are no more free seats in room, add student without assigning seat number (regardless of the classes mode)
                Attendance::create([
                    'classes_id' => $classes->id,
                    'student_id_number' => $student_id_number,
                    'student_name' => $student_name,
                    'student_surname' => $student_surname,
                    'seat_number' => null
                ]);
                $warning = "Zostałeś zapisany na listę obecności, ale bez przyznanego miejsca.";
                return view('map.summary_map', ['student_name' => $student_name, 'student_surname' => $student_surname, 'seat_number' => null, 'student_id_number' => $student_id_number, 'classes_id' => $classes->id, 'mode' => $classes->mode, 'warning' => $warning]);
            } else {
                if ($classes->mode == 'quick') {
                    Attendance::create([
                        'classes_id' => $classes->id,
                        'student_id_number' => $student_id_number,
                        'student_name' => $student_name,
                        'student_surname' => $student_surname,
                        'seat_number' => null
                    ]);
                    return view('map.summary_map', ['student_name' => $student_name, 'student_surname' => $student_surname, 'seat_number' => null, 'student_id_number' => $student_id_number, 'classes_id' => $classes->id, 'mode' => $classes->mode, 'warning' => null]);
                } else {
                    // prepare seat map
                    $room_arrangement = Room::find($subject->room_id)->arrangement;
                    if (!$room_arrangement) {
                        $room_arrangement = Room::where('name', 'Inna sala')->first()->arrangement;
                    }
                    $room_rows = count(explode("++", $room_arrangement));
                    if ($room_rows > 4) {  //max 4 rows on one page
                        $multi_parts = true;
                        $parts_number = ceil($room_rows / 4);
                    } else {
                        $multi_parts = false;
                        $parts_number = 1;
                    }

                    if ($classes->mode == 'test') {
                        $random_seat = rand(1, $room_capacity);
                        while (in_array($random_seat, $seat_numbers)) {
                            $random_seat = rand(1, $room_capacity);
                        }
                        return view('map.seat_map', ['student_name' => $student_name, 'student_surname' => $student_surname, 'seat_number' => $random_seat, 'student_id_number' => $student_id_number, 'classes_id' => $classes->id, 'seat_numbers' => $seat_numbers, 'room_arrangement' => $room_arrangement, 'multi_parts' => $multi_parts, 'parts_number' => $parts_number, 'mode' => 'test', 'random_seat' => $random_seat]);
                    } else {
                        return view('map.seat_map', ['student_name' => $student_name, 'student_surname' => $student_surname, 'student_id_number' => $student_id_number, 'classes_id' => $classes->id, 'seat_numbers' => $seat_numbers, 'room_arrangement' => $room_arrangement, 'multi_parts' => $multi_parts, 'parts_number' => $parts_number, 'mode' => null]);
                    }
                }
            }
        }
    }

    public function save_classes_data(Request $request)
    {
        $classes_id = $request->input('classes_id');
        $student_id_number = $request->input('student_id_number');
        $student_name = $request->input('student_name');
        $student_surname = $request->input('student_surname');
        $seat_number = $request->input('seat_number');
        Attendance::create([
            'classes_id' => $classes_id,
            'student_id_number' => $student_id_number,
            'student_name' => $student_name,
            'student_surname' => $student_surname,
            'seat_number' => $seat_number
        ]);
        return view('map.summary_map', ['student_name' => $student_name, 'student_surname' => $student_surname, 'seat_number' => $seat_number, 'student_id_number' => $student_id_number, 'classes_id' => $classes_id, 'mode' => null, 'warning' => null]);
    }

    public function preview_classes($classes_id, $orderBy='student_surname', $orderDirection='ASC')
    {
        if(!$classes_id == 0) {
            $classes = Classes::find($classes_id);
            $attendances = Attendance::where('classes_id', $classes->id)->orderBy($orderBy,$orderDirection)->get();
            $seat_numbers = $attendances->pluck('seat_number')->toArray();
            $subject = Subject::find($classes->subject_id);
            $room_arrangement = Room::find($subject->room_id)->arrangement;
            if(!$room_arrangement) {
                $room_arrangement = Room::where('name', 'Inna sala')->first()->arrangement;
            }
            $room_rows = count(explode("++", $room_arrangement));
            if($room_rows > 4) {  //max 4 rows on one page
                $multi_parts = true;
                $parts_number = ceil($room_rows/4);
            } else {
                $multi_parts = false;
            }
            return view('user.user_preview_classes', ['classes_id' => $classes_id, 'room_arrangement' => $room_arrangement, 'attendances' => $attendances, 'seat_numbers' => $seat_numbers, 'orderBy' => $orderBy, 'orderDirection' => $orderDirection, 'multi_parts' => $multi_parts, 'parts_number' =>$parts_number]);

        }
    }
}