<?php

namespace App\Http\Controllers;

use App\Http\Requests\StudentPostRequest;
use App\Models\Grade;
use App\Models\Student;
use App\Models\Subject;
use App\Services\StudentService;
use Illuminate\Http\RedirectResponse;
use Illuminate\View\View;

class StudentController extends Controller
{
    public function __construct(
        protected StudentService $service
    ) {
    }

    /**
     * Display a listing of the resource.
     */
    public function index(): View
    {
        if(request()->user()->cannot('viewAny', Student::class)) {
            abort(403);
        }

        return view('students.index', [
            'students' => Student::filter()->paginate(5)->withQueryString(),
        ]);
    }

    /**
     * Show the form for creating a new resource.
     */
    public function create(): View
    {
        if(request()->user()->cannot('create', Student::class)) {
            abort(403);
        }

        return view('students.create', [
            'grades' => Grade::all(),
        ]);
    }

    /**
     * Store a newly created resource in storage.
     */
    public function store(StudentPostRequest $request): RedirectResponse
    {
        if(request()->user()->cannot('create', Student::class)) {
            abort(403);
        }

        return redirect()->route(
            'students.show',
            $this->service->create($request->validated())
        );
    }

    /**
     * Display the specified resource.
     */
    public function show(Student $student): View
    {
        if(request()->user()->cannot('view', $student)) {
            abort(403);
        }

        return view('students.show', [
            'student' => $student,
            'grades' => Grade::all(),
        ]);
    }

    /**
     * Show the form for editing the specified resource.
     */
    public function edit(Student $student): View
    {
        if(request()->user()->cannot('update', $student)) {
            abort(403);
        }

        return view('students.edit', [
            'student' => $student,
            'grades' => Grade::all(),
        ]);
    }

    /**
     * Update the specified resource in storage.
     */
    public function update(StudentPostRequest $request, Student $student): RedirectResponse
    {
        if(request()->user()->cannot('update', $student)) {
            abort(403);
        }

        return redirect()->route(
            'students.show',
            $this->service->update($student, $request->validated())
        );
    }

    /**
     * Remove the specified resource from storage.
     */
    public function destroy(Student $student): RedirectResponse
    {
        if(request()->user()->cannot('delete', $student)) {
            abort(403);
        }

        $student->user()->delete();
        $student->delete();

        return redirect()->route('students.index');
    }

    public function scores(StudentService $service, Subject $subject): View
    {
        return view('students.scores', [
            'lessons' => $service->getScores($subject),
            'avgScore' => $service->getAvgScore($subject),
        ]);
    }

    public function debts(StudentService $service): View
    {
        return view('students.debts', [
            'lessons' => $service->getDebts(),
        ]);
    }
}