<?php

namespace App\Http\Controllers\User;

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

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

use Illuminate\Support\Facades\Auth;
use Illuminate\Support\Facades\Session;

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)->get();
        $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');
        Classes::create([
            'subject_id' => $subject_id,
            'date' => $date
        ]);
        $classes_id = Classes::orderBy('created_at', 'desc')->first()->id;
        return redirect(route('user_start_classes', ['classes_id' => $classes_id]));
    }

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

    public function edit_classes($classes_id)
    {
        Classes::find($classes_id);
        return redirect(route('user_classes'));
    }

    public function start_classes($classes_id)
    {
        $classes_code = generateRandomString(10);
        session([
            'CLASSES_CODE' => $classes_code,
            'CLASSES_ID' => $classes_id
        ]);
        $classes = Classes::find($classes_id);
        return view('user.user_classes_start', ['verified' => false, 'classes_code' => $classes_code, 'classes' => $classes]);
    }

    public function start_classes_verified(Request $request)
    {
        $classes = Classes::find($request->get('classes_id'));
        $room = Room::find(Subject::find($classes->subject_id)->room_id)->name;
        $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,
        ]);
        $attendances = Attendance::where('classes_id', $classes->id)->get();
        return view('user.user_classes_start', ['verified' => true, 'room' => $room, 'attendances' => $attendances]);
    }
}