MKM/app/Filament/Resources/SaleResource/Pages/CreateSale.php

<?php

namespace App\Filament\Resources\SaleResource\Pages;

use App\Actions\Transactions\CreateTransactionAction;
use App\DataObjects\CreateTransactionDTO;
use App\Filament\Resources\ClientResource;
use App\Filament\Resources\SaleResource;
use App\Models\Branch;
use App\Models\Client;
use App\Models\Sale;
use App\Services\Sales\SaleService;
use Filament\Resources\Pages\CreateRecord;
use Illuminate\Database\Eloquent\Model;
use Illuminate\Support\Arr;
use Illuminate\Support\Facades\DB;
use Illuminate\Support\Facades\Pipeline;

class CreateSale extends CreateRecord
{
    protected static string $resource = SaleResource::class;

    public ?int $clientId = null;

    public function mount(): void
    {
        parent::mount();

        $this->clientId = request()->integer('client_id');
    }

    public function getBreadcrumbs(): array
    {
        $client = $this->getClient();

        if (! $client) {
            return parent::getBreadcrumbs();
        }

        return [
            ClientResource::getUrl('view', ['record' => $client->id]) => $client->company,
            ClientResource::getUrl('view', ['record' => $client->id]).'?activeRelationManager=3' => 'Sales',
            $this->getResource()::getUrl('create', ['client_id' => $client->id]) => 'Create',
        ];
    }

    protected function getClient(): Client|null
    {
        if (! $this->clientId) {
            return null;
        }

        return Client::find($this->clientId);
    }

    protected function mutateFormDataBeforeCreate(array $data): array
    {
        return $this->getFormDataMutation($data);
    }

    protected function handleRecordCreation(array $data): Model
    {
        $transactions = $this->data['transactions'] ?? [];
        return $this->processCreate($data, $transactions);
    }

    public function getFormDataMutation(array $data): array
    {
        $transactions = $data['transactions'] ?? [];

        $data['gross_amount'] = collect($transactions)->sum(fn (array $transaction) => (float) ($transaction['gross_amount'] ?? 0));
        $data['exempt'] = collect($transactions)->sum(fn (array $transaction) => (float) ($transaction['exempt'] ?? 0));
        $data['vatable_amount'] = collect($transactions)->sum(fn (array $transaction) => (float) ($transaction['vatable_amount'] ?? 0));
        $data['output_tax'] = collect($transactions)->sum(fn (array $transaction) => (float) ($transaction['output_tax'] ?? 0));
        $data['payable_withholding_tax'] = collect($transactions)->sum(fn (array $transaction) => (float) ($transaction['payable_withholding_tax'] ?? 0));
        $data['discount'] = collect($transactions)->sum(fn (array $transaction) => (float) ($transaction['discount'] ?? 0));
        $data['net_amount'] = collect($transactions)->sum(fn (array $transaction) => (float) ($transaction['net_amount'] ?? 0));

        return Arr::except($data, ['client', 'transactions', 'with_discount']);
    }

    public function processCreate(array $data, array $transactions): Model
    {
        try {
            DB::beginTransaction();
            $record = app(SaleService::class)->create($this->getFormDataMutation($data));
            $branch = $record->branch;

            foreach ($transactions as $transaction) {
                $tData = [
                    'branch_id' => $branch->id,
                    'happened_on' => $record->happened_on,
                    ...$transaction,
                ];

                $payload = new CreateTransactionDTO(data: $tData, transactionable: $record);

                Pipeline::send(passable: $payload)->through(
                    [
                        CreateTransactionAction::class,
                    ]
                )->thenReturn();
            }

            $accountIds = collect($transactions)
                ->pluck('account_id')
                ->filter()
                ->unique()
                ->values()
                ->all();

            $record->accounts()->sync($accountIds);

            DB::commit();
        } catch (\Exception $exception) {
            DB::rollBack();
            throw new \Exception('Failed to save transactions : '.$exception->getMessage());
        }

        return $record;
    }

    protected function afterCreate(): void
    {
        $branch = Branch::find($this->data['branch_id']);
    }
}