<?php

namespace App\Http\Requests\Sgc;

use Illuminate\Foundation\Http\FormRequest;

final class StoreInvoiceRequest extends FormRequest
{
    public function authorize(): bool { return $this->user() !== null; }

    public function rules(): array
    {
        $base = ['phase'=>'required|in:preview,confirm', 'order_id'=>'required|integer|min:1'];
        if ($this->input('phase') === 'confirm') return $base + ['preview'=>'required|string|max:131072'];
        return $base + ['revision'=>'required|string|regex:/^[a-f0-9]{64}$/D', 'reason'=>'required|string|min:10|max:2000',
            'data'=>'required|array:number,issued_on,subtotal,tax,total,items', 'data.number'=>'required|string|max:80',
            'data.issued_on'=>'required|date_format:Y-m-d', 'data.subtotal'=>'required|string|regex:/^\d{1,12}\.\d{2}$/D',
            'data.tax'=>'required|string|regex:/^\d{1,12}\.\d{2}$/D', 'data.total'=>'required|string|regex:/^\d{1,12}\.\d{2}$/D',
            'data.items'=>'required|array|min:1|max:50', 'data.items.*'=>'required|array:purchase_order_item_id,quantity,unit,unit_price,tax_rate',
            'data.items.*.purchase_order_item_id'=>'required|integer|min:1|distinct',
            'data.items.*.quantity'=>'required|string|regex:/^\d{1,12}(\.\d{1,3})?$/D',
            'data.items.*.unit'=>'required|string|max:20', 'data.items.*.unit_price'=>'required|string|regex:/^\d{1,12}\.\d{2}$/D',
            'data.items.*.tax_rate'=>'required|string|regex:/^\d{1,3}(\.\d{1,2})?$/D'];
    }

    public function after(): array
    {
        return [function ($validator) {
            $allowed = $this->input('phase') === 'confirm' ? ['phase','order_id','preview'] : ['phase','order_id','revision','reason','data'];
            if ($this->query->count() || array_diff(array_keys($this->json()->all()), $allowed)) $validator->errors()->add('payload', 'Campos ou parâmetros não permitidos.');
            if (!preg_match('/^[a-fA-F0-9]{8}-[a-fA-F0-9]{4}-[1-8][a-fA-F0-9]{3}-[89aAbB][a-fA-F0-9]{3}-[a-fA-F0-9]{12}$/D', (string)$this->header('X-Idempotency-Key'))) $validator->errors()->add('idempotency_key', 'X-Idempotency-Key UUID obrigatório.');
        }];
    }
}