<?php
/**
 * AccountTransformer.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\Transformers;

use Carbon\Carbon;
use FireflyIII\Exceptions\FireflyException;
use FireflyIII\Models\Account;
use FireflyIII\Repositories\Account\AccountRepositoryInterface;
use JsonException;
use Symfony\Component\HttpFoundation\ParameterBag;

/**
 * Class AccountTransformer
 */
class AccountTransformer extends AbstractTransformer
{
    protected AccountRepositoryInterface $repository;

    /**
     *
     * AccountTransformer constructor.
     *

     */
    public function __construct()
    {
        $this->parameters = new ParameterBag();
        $this->repository = app(AccountRepositoryInterface::class);
    }

    /**
     * Transform the account.
     *
     * @param Account $account
     *
     * @return array
     * @throws FireflyException
     * @throws JsonException
     */
    public function transform(Account $account): array
    {
        $this->repository->setUser($account->user);

        // get account type:
        $fullType           = $account->accountType->type;
        $accountType        = (string)config(sprintf('firefly.shortNamesByFullName.%s', $fullType));
        $liabilityType      = (string)config(sprintf('firefly.shortLiabilityNameByFullName.%s', $fullType));
        $liabilityType      = '' === $liabilityType ? null : strtolower($liabilityType);
        $liabilityDirection = $this->repository->getMetaValue($account, 'liability_direction');

        // get account role (will only work if the type is asset.
        $accountRole = $this->getAccountRole($account, $accountType);
        $date        = $this->getDate();
        $date->endOfDay();

        [$currencyId, $currencyCode, $currencySymbol, $decimalPlaces] = $this->getCurrency($account);
        [$creditCardType, $monthlyPaymentDate] = $this->getCCInfo($account, $accountRole, $accountType);
        [$openingBalance, $openingBalanceDate] = $this->getOpeningBalance($account, $accountType);
        [$interest, $interestPeriod] = $this->getInterest($account, $accountType);

        $openingBalance  = app('steam')->bcround($openingBalance, $decimalPlaces);
        $includeNetWorth = '0' !== $this->repository->getMetaValue($account, 'include_net_worth');
        $longitude       = null;
        $latitude        = null;
        $zoomLevel       = null;
        $location        = $this->repository->getLocation($account);
        if (null !== $location) {
            $longitude = $location->longitude;
            $latitude  = $location->latitude;
            $zoomLevel = (int)$location->zoom_level;
        }

        // no order for some accounts:
        $order = (int)$account->order;
        if (!in_array(strtolower($accountType), ['liability', 'liabilities', 'asset'], true)) {
            $order = null;
        }

        return [
            'id'                      => (string)$account->id,
            'created_at'              => $account->created_at->toAtomString(),
            'updated_at'              => $account->updated_at->toAtomString(),
            'active'                  => $account->active,
            'order'                   => $order,
            'name'                    => $account->name,
            'type'                    => strtolower($accountType),
            'account_role'            => $accountRole,
            'currency_id'             => $currencyId,
            'currency_code'           => $currencyCode,
            'currency_symbol'         => $currencySymbol,
            'currency_decimal_places' => $decimalPlaces,
            'current_balance'         => app('steam')->bcround(app('steam')->balance($account, $date), $decimalPlaces),
            'current_balance_date'    => $date->toAtomString(),
            'notes'                   => $this->repository->getNoteText($account),
            'monthly_payment_date'    => $monthlyPaymentDate,
            'credit_card_type'        => $creditCardType,
            'account_number'          => $this->repository->getMetaValue($account, 'account_number'),
            'iban'                    => '' === $account->iban ? null : $account->iban,
            'bic'                     => $this->repository->getMetaValue($account, 'BIC'),
            'virtual_balance'         => app('steam')->bcround($account->virtual_balance, $decimalPlaces),
            'opening_balance'         => $openingBalance,
            'opening_balance_date'    => $openingBalanceDate,
            'liability_type'          => $liabilityType,
            'liability_direction'     => $liabilityDirection,
            'interest'                => $interest,
            'interest_period'         => $interestPeriod,
            'current_debt'            => $this->repository->getMetaValue($account, 'current_debt'),
            'include_net_worth'       => $includeNetWorth,
            'longitude'               => $longitude,
            'latitude'                => $latitude,
            'zoom_level'              => $zoomLevel,
            'links'                   => [
                [
                    'rel' => 'self',
                    'uri' => '/accounts/' . $account->id,
                ],
            ],
        ];
    }

    /**
     * @param Account $account
     *
     * @param string  $accountType
     *
     * @return string|null
     */
    private function getAccountRole(Account $account, string $accountType): ?string
    {
        $accountRole = $this->repository->getMetaValue($account, 'account_role');
        if ('asset' !== $accountType || '' === (string)$accountRole) {
            $accountRole = null;
        }

        return $accountRole;
    }

    /**
     * TODO duplicated in the V2 transformer.
     *
     * @return Carbon
     */
    private function getDate(): Carbon
    {
        $date = today(config('app.timezone'));
        if (null !== $this->parameters->get('date')) {
            $date = $this->parameters->get('date');
        }

        return $date;
    }

    /**
     * @param Account $account
     *
     * @return array
     * @throws FireflyException
     * @throws JsonException
     */
    private function getCurrency(Account $account): array
    {
        $currency = $this->repository->getAccountCurrency($account);

        // only grab default when result is null:
        if (null === $currency) {
            $currency = app('amount')->getDefaultCurrencyByUser($account->user);
        }
        $currencyId     = (string)$currency->id;
        $currencyCode   = $currency->code;
        $decimalPlaces  = $currency->decimal_places;
        $currencySymbol = $currency->symbol;

        return [$currencyId, $currencyCode, $currencySymbol, $decimalPlaces];
    }

    /**
     * @param Account     $account
     * @param string|null $accountRole
     * @param string      $accountType
     *
     * @return array
     */
    private function getCCInfo(Account $account, ?string $accountRole, string $accountType): array
    {
        $monthlyPaymentDate = null;
        $creditCardType     = null;
        if ('ccAsset' === $accountRole && 'asset' === $accountType) {
            $creditCardType     = $this->repository->getMetaValue($account, 'cc_type');
            $monthlyPaymentDate = $this->repository->getMetaValue($account, 'cc_monthly_payment_date');
        }
        if (null !== $monthlyPaymentDate) {
            // try classic date:
            if (10 === strlen($monthlyPaymentDate)) {
                $monthlyPaymentDate = Carbon::createFromFormat('!Y-m-d', $monthlyPaymentDate, config('app.timezone'))->toAtomString();
            }
            if (10 !== strlen($monthlyPaymentDate)) {
                $monthlyPaymentDate = Carbon::parse($monthlyPaymentDate, config('app.timezone'))->toAtomString();
            }
        }

        return [$creditCardType, $monthlyPaymentDate];
    }

    /**
     * @param Account $account
     * @param string  $accountType
     *
     * @return array
     *
     * TODO refactor call to get~OpeningBalanceAmount / Date because it is a lot of queries.
     */
    private function getOpeningBalance(Account $account, string $accountType): array
    {
        $openingBalance     = null;
        $openingBalanceDate = null;
        if (in_array($accountType, ['asset', 'liabilities'], true)) {
            $amount             = $this->repository->getOpeningBalanceAmount($account);
            $openingBalance     = $amount;
            $openingBalanceDate = $this->repository->getOpeningBalanceDate($account);
        }
        if (null !== $openingBalanceDate) {
            $openingBalanceDate = Carbon::createFromFormat('Y-m-d H:i:s', $openingBalanceDate, config('app.timezone'))->toAtomString();
        }

        return [$openingBalance, $openingBalanceDate];
    }

    /**
     * @param Account $account
     * @param string  $accountType
     *
     * @return array
     */
    private function getInterest(Account $account, string $accountType): array
    {
        $interest       = null;
        $interestPeriod = null;
        if ('liabilities' === $accountType) {
            $interest       = $this->repository->getMetaValue($account, 'interest');
            $interestPeriod = $this->repository->getMetaValue($account, 'interest_period');
        }

        return [$interest, $interestPeriod];
    }
}