Passed
Pull Request — master (#686)
by Vitor
04:31
created

AFactory::get()   A

Complexity

Conditions 4
Paths 4

Size

Total Lines 20
Code Lines 13

Duplication

Lines 0
Ratio 0 %

Code Coverage

Tests 15
CRAP Score 4

Importance

Changes 1
Bugs 0 Features 0
Metric Value
eloc 13
c 1
b 0
f 0
dl 0
loc 20
ccs 15
cts 15
cp 1
rs 9.8333
cc 4
nc 4
nop 1
crap 4
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<?php
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declare(strict_types=1);
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/**
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 * SPDX-FileCopyrightText: 2025 LibreCode coop and contributors
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 * SPDX-License-Identifier: AGPL-3.0-or-later
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 */
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namespace OCA\TwoFactorGateway\Provider;
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/**
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 * @template T of object
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 */
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abstract class AFactory {
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	/** @var array<string, T> */
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	protected array $instances = [];
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	/** @var array<string> */
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	protected array $fqcn = [];
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	abstract protected function getPrefix(): string;
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	abstract protected function getSuffix(): string;
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	/** @return class-string<T> */
0 ignored issues
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Documentation Bug introduced by
The doc comment class-string<T> at position 0 could not be parsed: Unknown type name 'class-string' at position 0 in class-string<T>.
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	abstract protected function getBaseClass(): string;
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	/**
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	 * @param class-string<T> $name
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Documentation Bug introduced by
The doc comment class-string<T> at position 0 could not be parsed: Unknown type name 'class-string' at position 0 in class-string<T>.
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	 * @return T
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	 */
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	public function get(string $name): object {
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		$needle = match(str_contains($name, '\\')) {
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			true => $this->typeFrom($name),
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			false => strtolower($name),
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		};
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		if (isset($this->instances[$needle])) {
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			return $this->instances[$needle];
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		}
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		foreach ($this->getFqcnList() as $fqcn) {
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			$type = $this->typeFrom($fqcn);
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			if ($type !== $needle) {
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				continue;
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			}
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			$instance = \OCP\Server::get($fqcn);
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			$this->instances[$type] = $instance;
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			return $instance;
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		}
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		throw new \InvalidArgumentException("Invalid type <$name>");
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	}
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	/** @return array<string> */
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	public function getFqcnList(): array {
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		if (!empty($this->fqcn)) {
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			return $this->fqcn;
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		}
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		$loader = require __DIR__ . '/../../vendor/autoload.php';
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		foreach ($loader->getClassMap() as $fqcn => $_) {
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			$type = $this->typeFrom($fqcn);
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			if ($type === null) {
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				continue;
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			}
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			if (!is_subclass_of($fqcn, $this->getBaseClass(), true)) {
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				continue;
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			}
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			$this->fqcn[] = $fqcn;
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		}
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		return $this->fqcn;
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	}
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	protected function typeFrom(string $fqcn): ?string {
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		$prefix = $this->getPrefix();
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		if (strncmp($fqcn, $prefix, strlen($prefix)) !== 0) {
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			return null;
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		}
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		$suffix = $this->getSuffix();
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		if (!str_ends_with($fqcn, $suffix)) {
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			return null;
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		}
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		$type = substr($fqcn, strlen($prefix));
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		$type = substr($type, 0, -strlen('\\' . $suffix));
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		if (strpos($type, '\\') !== false || $type === '') {
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			return null;
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		}
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		return strtolower($type);
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	}
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}
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