split up data provider

src/Bridge/Nette/DI/InvoiceExtension.php

@@ -4,7 +4,8 @@
 
 use Contributte\Invoice\Data\Account;
 use Contributte\Invoice\Data\Company;
-use Contributte\Invoice\Provider\InvoiceDataProvider;
+use Contributte\Invoice\Provider\InvoiceAccountsProvider;
+use Contributte\Invoice\Provider\InvoiceCompanyProvider;
 use Nette\DI\CompilerExtension;
 use Nette\DI\Definitions\Statement;
 use Nette\Schema\Expect;
@@ -36,11 +37,17 @@ public function loadConfiguration(): void
 	{
 		$builder = $this->getContainerBuilder();
 
-		$builder->addDefinition($this->prefix('dataProvider'))
-			->setFactory(InvoiceDataProvider::class, [
-				$this->getCompany(),
-				$this->getAccounts(),
-			]);
+		$company = $this->getCompany();
+		if ($company) {
+			$builder->addDefinition($this->prefix('companyProvider'))
+				->setFactory(InvoiceCompanyProvider::class, [$company]);
+		}
+
+		$accounts = $this->getAccounts();
+		if ($accounts) {
+			$builder->addDefinition($this->prefix('accountsProvider'))
+				->setFactory(InvoiceAccountsProvider::class, [$accounts]);
+		}
 	}
 
 	private function getCompany(): ?Statement

src/Provider/InvoiceAccountsProvider.php

@@ -0,0 +1,41 @@
+<?php declare(strict_types = 1);
+
+namespace Contributte\Invoice\Provider;
+
+use BadMethodCallException;
+use Contributte\Invoice\Data\Account;
+use LogicException;
+use Nette\Utils\Arrays;
+
+final class InvoiceAccountsProvider
+{
+
+	/** @var Account[] */
+	private array $accounts;
+
+	/**
+	 * @param Account[] $accounts
+	 */
+	public function __construct(array $accounts)
+	{
+		if (!$accounts) {
+			throw new BadMethodCallException('Accounts array cannot be empty.');
+		}
+
+		$this->accounts = $accounts;
+	}
+
+	/**
+	 * @return Account[]
+	 */
+	public function getAccounts(): array
+	{
+		return $this->accounts;
+	}
+
+	public function getAccount(): Account
+	{
+		return Arrays::first($this->accounts) ?? throw new LogicException('Unexpected error.');
+	}
+
+}

src/Provider/InvoiceCompanyProvider.php

@@ -0,0 +1,21 @@
+<?php declare(strict_types = 1);
+
+namespace Contributte\Invoice\Provider;
+
+use Contributte\Invoice\Data\ICompany;
+
+final class InvoiceCompanyProvider
+{
+
+	public function __construct(
+		private ICompany $company
+	)
+	{
+	}
+
+	public function getCompany(): ICompany
+	{
+		return $this->company;
+	}
+
+}