<?php

namespace App\Http\Requests;

use App\Models\Student;
use App\Rules\UniqueFullNameAtSchool;
use Illuminate\Foundation\Http\FormRequest;
use Illuminate\Support\Facades\Auth;

use function array_key_exists;
use function request;

class StudentStoreRequest extends FormRequest
{
    public function rules(): array
    {
        $schoolId = $this->input('school_id', Auth::user()->school_id);

        // If the user is not an admin, force their school_id to be used
        if (! Auth::user()->is_admin) {
            $schoolId = Auth::user()->school_id;
        }

        return [
            'first_name' => ['required'],
            'last_name' => [
                'required',
                new UniqueFullNameAtSchool(request('first_name'), request('last_name'), $schoolId),
            ],
            'grade' => ['required', 'integer'],
            'school_id' => ['sometimes', 'exists:schools,id'], // Only validates if present
            'shirt_size' => [
                'nullable',
                function ($attribute, $value, $fail) {
                    if (! array_key_exists($value, Student::$shirtSizes)) {
                        $fail("The selected $attribute is invalid.");
                    }
                },
            ],
        ];
    }

    // Helper method to get optional data (optional)
    public function getOptionalData(): array
    {
        return ($this->shirt_size !== 'none')
            ? ['shirt_size' => $this->shirt_size]
            : [];
    }

    public function authorize(): bool
    {
        return true;
    }
}