<?php

namespace App\Http\Requests\Admin\Manage;

use App\Enums\RegistrationStatus;
use Illuminate\Foundation\Http\FormRequest;
use Illuminate\Validation\Rule;

class CourseRegistrationRequest extends FormRequest
{
    public function authorize(): bool
    {
        return true;
    }

    public function rules(): array
    {
        $registration = $this->route('course_registration');

        return [
            'student_id' => ['required', 'integer', Rule::exists('students', 'id')],
            'academic_term_id' => ['required', 'integer', Rule::exists('academic_terms', 'id')],
            'course_class_id' => [
                'required',
                'integer',
                Rule::exists('course_classes', 'id'),
                Rule::unique('course_registrations')
                    ->where('student_id', $this->input('student_id'))
                    ->ignore($registration?->id),
            ],
            'status' => ['nullable', 'string', Rule::in(array_column(RegistrationStatus::cases(), 'value'))],
            'approved_by' => ['nullable', 'integer', Rule::exists('lecturers', 'id')],
        ];
    }

    public function attributes(): array
    {
        return [
            'course_class_id' => 'kelas mata kuliah',
        ];
    }

    public function messages(): array
    {
        return [
            'course_class_id.unique' => 'Mahasiswa ini sudah terdaftar pada kelas mata kuliah tersebut.',
        ];
    }
}