firefly-iii/app/Services/Internal/Destroy/AccountDestroyService.php

<?php
/**
 * AccountDestroyService.php
 * Copyright (c) 2018 thegrumpydictator@gmail.com
 *
 * This file is part of Firefly III.
 *
 * Firefly III is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * Firefly III 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 General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with Firefly III. If not, see <http://www.gnu.org/licenses/>.
 */

declare(strict_types=1);

namespace FireflyIII\Services\Internal\Destroy;

use DB;
use Exception;
use FireflyIII\Models\Account;
use FireflyIII\Models\PiggyBank;
use FireflyIII\Models\RecurrenceTransaction;
use FireflyIII\Models\Transaction;
use FireflyIII\Models\TransactionJournal;
use Illuminate\Database\Eloquent\Builder;
use Log;

/**
 * Class AccountDestroyService
 */
class AccountDestroyService
{
    /**
     * Constructor.
     *
     * @codeCoverageIgnore
     */
    public function __construct()
    {
        if ('testing' === config('app.env')) {
            Log::warning(sprintf('%s should not be instantiated in the TEST environment!', get_class($this)));
        }
    }

    /**
     * @param Account      $account
     * @param Account|null $moveTo
     *
     * @return void
     */
    public function destroy(Account $account, ?Account $moveTo): void
    {
        if (null !== $moveTo) {
            $this->moveTransactions($account, $moveTo);
            $this->updateRecurrences($account, $moveTo);
        }
        $this->destroyJournals($account);

        // delete recurring transactions with this account:
        if (null === $moveTo) {
            $this->destroyRecurrences($account);
        }

        // delete piggy banks:
        PiggyBank::where('account_id', $account->id)->delete();

        // delete account.
        try {
            $account->delete();
        } catch (Exception $e) { // @codeCoverageIgnore
            Log::error(sprintf('Could not delete account: %s', $e->getMessage())); // @codeCoverageIgnore
        }
    }

    /**
     * @param Account $account
     */
    private function destroyJournals(Account $account): void
    {

        /** @var JournalDestroyService $service */
        $service = app(JournalDestroyService::class);

        Log::debug('Now trigger account delete response #' . $account->id);
        /** @var Transaction $transaction */
        foreach ($account->transactions()->get() as $transaction) {
            Log::debug('Now at transaction #' . $transaction->id);
            /** @var TransactionJournal $journal */
            $journal = $transaction->transactionJournal()->first();
            if (null !== $journal) {
                Log::debug('Call for deletion of journal #' . $journal->id);
                $service->destroy($journal);
            }
        }
    }

    /**
     * @param Account $account
     */
    private function destroyRecurrences(Account $account): void
    {
        $recurrences = RecurrenceTransaction::
        where(
            static function (Builder $q) use ($account) {
                $q->where('source_id', $account->id);
                $q->orWhere('destination_id', $account->id);
            }
        )->get(['recurrence_id'])->pluck('recurrence_id')->toArray();

        /** @var RecurrenceDestroyService $destroyService */
        $destroyService = app(RecurrenceDestroyService::class);
        foreach ($recurrences as $recurrenceId) {
            $destroyService->destroyById((int)$recurrenceId);
        }
    }


    /**
     * @param Account $account
     * @param Account $moveTo
     */
    private function moveTransactions(Account $account, Account $moveTo): void
    {
        DB::table('transactions')->where('account_id', $account->id)->update(['account_id' => $moveTo->id]);
    }

    /**
     * @param Account $account
     * @param Account $moveTo
     */
    private function updateRecurrences(Account $account, Account $moveTo): void
    {
        DB::table('recurrences_transactions')->where('source_id', $account->id)->update(['source_id' => $moveTo->id]);
        DB::table('recurrences_transactions')->where('destination_id', $account->id)->update(['destination_id' => $moveTo->id]);
    }

}