<?php

/*
 * MoveTransactionsRequest.php
 * Copyright (c) 2021 james@firefly-iii.org
 *
 * This file is part of Firefly III (https://github.com/firefly-iii).
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU Affero General Public License as
 * published by the Free Software Foundation, either version 3 of the
 * License, or (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU Affero General Public License for more details.
 *
 * You should have received a copy of the GNU Affero General Public License
 * along with this program.  If not, see <https://www.gnu.org/licenses/>.
 */

declare(strict_types=1);

namespace FireflyIII\Api\V1\Requests\Data\Bulk;

use FireflyIII\Repositories\Account\AccountRepositoryInterface;
use FireflyIII\Support\Request\ChecksLogin;
use FireflyIII\Support\Request\ConvertsDataTypes;
use Illuminate\Foundation\Http\FormRequest;
use Illuminate\Validation\Validator;

/**
 * Class MoveTransactionsRequest
 */
class MoveTransactionsRequest extends FormRequest
{
    use ChecksLogin, ConvertsDataTypes;

    /**
     * @return array
     */
    public function getAll(): array
    {
        return [
            'original_account'    => $this->convertInteger('original_account'),
            'destination_account' => $this->convertInteger('destination_account'),
        ];
    }

    /**
     * @return string[]
     */
    public function rules(): array
    {
        return [
            'original_account'    => 'required|different:destination_account|belongsToUser:accounts,id',
            'destination_account' => 'required|different:original_account|belongsToUser:accounts,id',
        ];
    }

    /**
     * Configure the validator instance with special rules for after the basic validation rules.
     *
     * @param Validator $validator
     * See reference nr. 74
     *
     * @return void
     */
    public function withValidator(Validator $validator): void
    {
        $validator->after(
            function (Validator $validator) {
                // validate start before end only if both are there.
                $data = $validator->getData();
                if (array_key_exists('original_account', $data) && array_key_exists('destination_account', $data)) {
                    $this->validateMove($validator);
                }
            }
        );
    }

    /**
     * @param Validator $validator
     * @return void
     */
    private function validateMove(Validator $validator): void {
        $data = $validator->getData();
        $repository = app(AccountRepositoryInterface::class);
        $repository->setUser(auth()->user());
        $original    = $repository->find((int) $data['original_account']);
        $destination = $repository->find((int) $data['destination_account']);

        // not the same type:
        if ($original->accountType->type !== $destination->accountType->type) {
            $validator->errors()->add('title', (string) trans('validation.same_account_type'));

            return;
        }
        // get currency pref:
        $originalCurrency    = $repository->getAccountCurrency($original);
        $destinationCurrency = $repository->getAccountCurrency($destination);

        // check different scenario's.
        if (null === $originalCurrency xor null === $destinationCurrency) {
            $validator->errors()->add('title', (string) trans('validation.same_account_currency'));

            return;
        }
        if (null === $originalCurrency && null === $destinationCurrency) {
            // this is OK
            return;
        }
        if ($originalCurrency->code !== $destinationCurrency->code) {
            $validator->errors()->add('title', (string) trans('validation.same_account_currency'));
        }
    }
}