<?php

namespace App\Http\Requests;

use Illuminate\Foundation\Http\FormRequest;
use Illuminate\Validation\Rule;

class StoreRequisitionRequest extends FormRequest
{
    public function authorize(): bool
    {
        $user = $this->user();

        return $user !== null && $user->tenant_id !== null && $user->department_id !== null;
    }

    /** @return array<string, mixed> */
    public function rules(): array
    {
        return [
            'operation_key' => 'nullable|uuid',
            'process_version' => 'nullable|integer|min:1',
            'cost_center_id' => ['required', 'integer', Rule::exists('cost_centers', 'id')->where('tenant_id', $this->user()?->tenant_id)->where('department_id', $this->user()?->department_id)],
            'priority' => ['required', Rule::in(['normal', 'high', 'urgent'])],
            'needed_by' => ['required', 'date_format:Y-m-d', 'after_or_equal:today'],
            'justification' => ['required', 'string', 'min:10', 'max:5000'],
            'items' => ['required', 'array', 'min:1', 'max:50'],
            'items.*.catalogue_entry_id' => 'nullable|integer|min:1',
            'items.*.catalogue_version' => 'nullable|required_with:items.*.catalogue_entry_id|integer|min:1',
            'items.*.source_line_id' => 'nullable|integer|min:1',
            'items.*.description' => ['required_without:items.*.catalogue_entry_id', 'string', 'max:255'],
            'items.*.category' => ['required_without:items.*.catalogue_entry_id', 'string', 'max:100'],
            'items.*.purchase_type' => ['required_without:items.*.catalogue_entry_id', Rule::in(['consumable', 'service', 'other', 'equipment', 'spare_part'])],
            'items.*.equipment_id' => ['exclude_unless:items.*.purchase_type,spare_part', 'required', 'integer', Rule::exists('equipment', 'id')->where('tenant_id', $this->user()?->tenant_id)->where('department_id', $this->user()?->department_id)],
            'items.*.spare_part_id' => ['exclude_unless:items.*.purchase_type,spare_part', 'required', 'integer', Rule::exists('spare_parts', 'id')->where('tenant_id', $this->user()?->tenant_id)],
            'items.*.production_area' => 'exclude_unless:items.*.purchase_type,equipment|required|string|max:200',
            'items.*.downtime_started_at' => 'exclude_unless:items.*.purchase_type,spare_part|nullable|date_format:Y-m-d\TH:i|before_or_equal:now',
            'items.*.quantity' => ['required', 'numeric', 'min:0.001', 'max:1000000', 'regex:/^\d+(\.\d{1,3})?$/'],
            'items.*.unit' => ['required_without:items.*.catalogue_entry_id', 'string', 'max:30'],
            'items.*.unit_price' => ['required', 'numeric', 'min:0.01', 'max:100000000', 'regex:/^\d+(\.\d{1,2})?$/'],
            'items.*.tax_rate' => ['required', 'numeric', 'between:0,100', 'regex:/^\d+(\.\d{1,2})?$/'],
        ];
    }

    /** @return array<string, string> */
    public function messages(): array
    {
        return [
            'cost_center_id.exists' => 'Seleccione um centro de custo do seu departamento.',
            'needed_by.after_or_equal' => 'A entrega pretendida deve ser hoje ou numa data futura.',
            'justification.min' => 'Descreva a necessidade da compra com pelo menos 10 caracteres.',
            'items.*.quantity.regex' => 'Use até três casas decimais na quantidade.',
            'items.*.unit_price.regex' => 'Use até duas casas decimais no preço.',
            'items.*.tax_rate.regex' => 'Use até duas casas decimais na taxa de IVA.',
        ];
    }
}