<?php

namespace App\Http\Requests\Inventory;

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

class StoreStockDisposalRequest extends FormRequest
{
    public function authorize(): bool
    {
        return (bool) $this->user()?->isAdmin();
    }

    /**
     * @return array<string, array<int, mixed>>
     */
    public function rules(): array
    {
        return [
            'disposal_type' => ['required', Rule::in(['ingredient', 'packaging'])],
            'ingredient_id' => ['nullable', 'integer', 'exists:ingredients,id'],
            'packaging_item_id' => ['nullable', 'integer', 'exists:packaging_items,id'],
            'stock_entry_id' => ['nullable', 'integer', 'exists:stock_entries,id'],
            'location_id' => ['required', 'integer', 'exists:locations,id'],
            'quantity' => ['required', 'numeric', 'min:0.01'],
            'reason' => ['required', 'string', 'max:100'],
            'note' => ['nullable', 'string', 'max:255'],
            'disposed_at' => ['required', 'date'],
        ];
    }

    /**
     * @return array<string, string>
     */
    public function messages(): array
    {
        return [
            'location_id.required' => __('Bitte einen Lagerort wählen.'),
            'quantity.required' => __('Bitte eine Menge angeben.'),
            'quantity.min' => __('Die Menge muss größer als 0 sein.'),
            'reason.required' => __('Bitte einen Grund angeben.'),
            'disposed_at.required' => __('Bitte ein Datum angeben.'),
        ];
    }

    protected function prepareForValidation(): void
    {
        $disposedAt = $this->input('disposed_at');
        if (is_string($disposedAt) && preg_match('/^\d{2}\.\d{2}\.\d{4}$/', trim($disposedAt))) {
            $disposedAt = Carbon::createFromFormat('d.m.Y', trim($disposedAt))->format('Y-m-d');
        }

        $this->merge([
            'quantity' => reFormatNumber($this->input('quantity')),
            'disposed_at' => $disposedAt,
        ]);
    }

    public function withValidator(Validator $validator): void
    {
        $validator->after(function (Validator $validator): void {
            if ($this->input('disposal_type') === 'ingredient') {
                if (empty($this->input('ingredient_id'))) {
                    $validator->errors()->add('ingredient_id', __('Bitte einen Rohstoff wählen.'));
                }
            } elseif ($this->input('disposal_type') === 'packaging') {
                if (empty($this->input('packaging_item_id'))) {
                    $validator->errors()->add('packaging_item_id', __('Bitte einen Verpackungsartikel wählen.'));
                }
            }
        });
    }

    /**
     * @return array<string, mixed>
     */
    public function validatedPayload(): array
    {
        $data = $this->validated();

        if (($data['disposal_type'] ?? '') === 'ingredient') {
            $data['packaging_item_id'] = null;
            $data['unit'] = 'gram';
        } else {
            $data['ingredient_id'] = null;
            $data['stock_entry_id'] = null;
            $data['unit'] = 'piece';
        }

        return $data;
    }
}