<?php

/**
 * BudgetLimitStoreRequest.php
 * Copyright (c) 2019 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\Models\BudgetLimit;

use Carbon\Carbon;
use FireflyIII\Factory\TransactionCurrencyFactory;
use FireflyIII\Models\Budget;
use FireflyIII\Repositories\Currency\CurrencyRepositoryInterface;
use FireflyIII\Rules\IsBoolean;
use FireflyIII\Rules\IsValidPositiveAmount;
use FireflyIII\Support\Facades\Amount;
use FireflyIII\Support\Request\ChecksLogin;
use FireflyIII\Support\Request\ConvertsDataTypes;
use Illuminate\Contracts\Validation\Validator;
use Illuminate\Foundation\Http\FormRequest;
use Illuminate\Support\Facades\Log;

/**
 * Class StoreRequest
 */
class StoreRequest extends FormRequest
{
    use ChecksLogin;
    use ConvertsDataTypes;

    protected array $acceptedRoles = [];

    /**
     * Get all data from the request.
     */
    public function getAll(): array
    {
        return [
            'start'         => $this->getCarbonDate('start'),
            'end'           => $this->getCarbonDate('end'),
            'amount'        => $this->convertString('amount'),
            'currency_id'   => $this->convertInteger('currency_id'),
            'currency_code' => $this->convertString('currency_code'),
            'notes'         => $this->stringWithNewlines('notes'),

            // for webhooks:
            'fire_webhooks' => $this->boolean('fire_webhooks', true),
        ];
    }

    /**
     * The rules that the incoming request must be matched against.
     */
    public function rules(): array
    {
        return [
            'start'         => ['required', 'before:end', 'date'],
            'end'           => ['required', 'after:start', 'date'],
            'amount'        => ['required', new IsValidPositiveAmount()],
            'currency_id'   => ['numeric', 'exists:transaction_currencies,id'],
            'currency_code' => ['min:3', 'max:51', 'exists:transaction_currencies,code'],
            'notes'         => ['nullable', 'min:0', 'max:32768'],

            // webhooks
            'fire_webhooks' => [new IsBoolean()],
        ];
    }

    /**
     * Configure the validator instance.
     */
    public function withValidator(Validator $validator): void
    {
        /** @var Budget $budget */
        $budget = $this->route()->parameter('budget');
        $validator->after(static function (Validator $validator) use ($budget): void {
            if (0 !== count($validator->failed())) {
                return;
            }
            $data       = $validator->getData();

            // if no currency has been provided, use the user's default currency:
            /** @var TransactionCurrencyFactory $factory */
            $factory    = app(TransactionCurrencyFactory::class);
            $currency   = $factory->find($data['currency_id'] ?? null, $data['currency_code'] ?? null);
            if (null === $currency) {
                $currency = Amount::getPrimaryCurrency();
            }
            $repository = app(CurrencyRepositoryInterface::class);
            $repository->enable($currency);

            // validator already concluded start and end are valid dates:
            $start      = Carbon::parse($data['start'], config('app.timezone'));
            $end        = Carbon::parse($data['end'], config('app.timezone'));

            // find limit with same date range and currency.
            $limit      = $budget
                ->budgetlimits()
                ->where('budget_limits.start_date', $start->format('Y-m-d'))
                ->where('budget_limits.end_date', $end->format('Y-m-d'))
                ->where('budget_limits.transaction_currency_id', $currency->id)
                ->first(['budget_limits.*'])
            ;
            if (null !== $limit) {
                $validator->errors()->add('start', trans('validation.limit_exists'));
            }
        });
        if ($validator->fails()) {
            Log::channel('audit')->error(sprintf('Validation errors in %s', self::class), $validator->errors()->toArray());
        }
    }
}