<?php

/**
 * JournalDestroyService.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\Services\Internal\Destroy;

use FireflyIII\Models\Attachment;
use FireflyIII\Models\Transaction;
use FireflyIII\Models\TransactionJournal;
use FireflyIII\Models\TransactionJournalLink;
use FireflyIII\Models\TransactionJournalMeta;
use Illuminate\Support\Facades\DB;

/**
 * Class JournalDestroyService
 */
class JournalDestroyService
{
    public function destroy(TransactionJournal $journal): void
    {
        app('log')->debug(sprintf('Now in %s', __METHOD__));

        /** @var Transaction $transaction */
        foreach ($journal->transactions()->get() as $transaction) {
            app('log')->debug(sprintf('Will now delete transaction #%d', $transaction->id));
            $transaction->delete();
        }

        // also delete journal_meta entries.
        /** @var TransactionJournalMeta $meta */
        foreach ($journal->transactionJournalMeta()->get() as $meta) {
            app('log')->debug(sprintf('Will now delete meta-entry #%d', $meta->id));
            $meta->delete();
        }

        // also delete attachments.
        /** @var Attachment $attachment */
        foreach ($journal->attachments()->get() as $attachment) {
            $attachment->delete();
        }

        // delete all from 'budget_transaction_journal'
        DB::table('budget_transaction_journal')
            ->where('transaction_journal_id', $journal->id)->delete()
        ;

        // delete all from 'category_transaction_journal'
        DB::table('category_transaction_journal')
            ->where('transaction_journal_id', $journal->id)->delete()
        ;

        // delete all from 'tag_transaction_journal'
        DB::table('tag_transaction_journal')
            ->where('transaction_journal_id', $journal->id)->delete()
        ;

        // delete all links:
        TransactionJournalLink::where('source_id', $journal->id)->delete();
        TransactionJournalLink::where('destination_id', $journal->id)->delete();

        // delete all notes
        $journal->notes()->delete();

        // update events
        // TODO move to repository
        $journal->piggyBankEvents()->update(['transaction_journal_id' => null]);

        $journal->delete();

        // delete group, if group is empty:
        $group = $journal->transactionGroup;
        if (null !== $group) {
            $count = $group->transactionJournals->count();
            if (0 === $count) {
                $group->delete();
            }
        }
    }
}
