<?php

namespace Modules\Accounting\Services;

use Illuminate\Support\Facades\DB;
use Illuminate\Support\Facades\Schema;

class PaymentAccountGlLinkService
{
    public function linkByNameMatch(int $businessId, bool $onlyUnlinked = true): int
    {
        if (! Schema::hasColumn('accounts', 'accounting_account_id')) {
            return 0;
        }

        $query = DB::table('accounts')->where('business_id', $businessId);
        if ($onlyUnlinked) {
            $query->whereNull('accounting_account_id');
        }

        $linked = 0;
        foreach ($query->get(['id', 'name', 'business_id']) as $paymentAccount) {
            $gl = DB::table('accounting_accounts')
                ->where('business_id', $paymentAccount->business_id)
                ->where('name', $paymentAccount->name)
                ->where('status', 'active')
                ->first(['id']);

            if (! $gl) {
                $gl = DB::table('accounting_accounts')
                    ->where('business_id', $paymentAccount->business_id)
                    ->where('gl_code', 'like', '%'.substr(preg_replace('/\s+/', '', $paymentAccount->name), 0, 8).'%')
                    ->where('status', 'active')
                    ->first(['id']);
            }

            if ($gl) {
                DB::table('accounts')->where('id', $paymentAccount->id)->update([
                    'accounting_account_id' => $gl->id,
                ]);
                $linked++;
            }
        }

        return $linked;
    }

    public function summary(int $businessId): array
    {
        if (! Schema::hasColumn('accounts', 'accounting_account_id')) {
            return ['total' => 0, 'linked' => 0, 'unlinked' => 0];
        }

        $total = DB::table('accounts')->where('business_id', $businessId)->where('is_closed', 0)->count();
        $linked = DB::table('accounts')
            ->where('business_id', $businessId)
            ->where('is_closed', 0)
            ->whereNotNull('accounting_account_id')
            ->count();

        return [
            'total' => $total,
            'linked' => $linked,
            'unlinked' => max(0, $total - $linked),
        ];
    }
}