<?php

namespace App\Http\Requests;

use App\Enums\BudgetPeriodType;
use App\Enums\RolloverType;
use App\Http\Requests\Concerns\ValidatesUserOwnedResources;
use Illuminate\Foundation\Http\FormRequest;
use Illuminate\Validation\Rule;

class StoreBudgetRequest extends FormRequest
{
    use ValidatesUserOwnedResources;

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

    public function rules(): array
    {
        return [
            'name' => ['required', 'string', 'max:255'],
            'period_type' => ['required', Rule::enum(BudgetPeriodType::class)],
            'period_start_day' => ['nullable', 'integer', 'min:0', 'max:31'],
            'category_ids' => ['nullable', 'array'],
            'category_ids.*' => [$this->userOwned('categories')],
            'label_ids' => ['nullable', 'array'],
            'label_ids.*' => [$this->userOwned('labels')],
            'rollover_type' => ['required', Rule::enum(RolloverType::class)],
            'allocated_amount' => ['required', 'integer', 'min:0'],
            'is_catch_all' => ['sometimes', 'boolean'],
        ];
    }

    public function withValidator($validator): void
    {
        $validator->after(function ($validator) {
            $isCatchAll = $this->boolean('is_catch_all');
            $hasCategories = ! empty($this->category_ids);
            $hasLabels = ! empty($this->label_ids);

            if (! $isCatchAll && ! $hasCategories && ! $hasLabels) {
                $validator->errors()->add(
                    'selection',
                    'You must select at least one category or label.'
                );
            }

            if ($isCatchAll && $this->user()->budgets()->where('is_catch_all', true)->exists()) {
                $validator->errors()->add(
                    'is_catch_all',
                    'You already have a catch-all budget.'
                );
            }
        });
    }
}