betterdocs / includes / Dependencies / DI / Definition / Resolver / EnvironmentVariableResolver.php

EnvironmentVariableResolver.php in BetterDocs – AI Documentation, Knowledge Base, MCP Server, Docs, Wikis, FAQ & Chatbot 4.7.0, at includes/Dependencies/DI/Definition/Resolver/EnvironmentVariableResolver.php

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1	<?php
2	// phpcs:ignoreFile -- Bundled third-party (Mozart) dependency; exempt from plugin coding standards.
3
4	declare(strict_types=1);
5
6	namespace WPDeveloper\BetterDocs\Dependencies\DI\Definition\Resolver;
7
8	use WPDeveloper\BetterDocs\Dependencies\DI\Definition\Definition;
9	use WPDeveloper\BetterDocs\Dependencies\DI\Definition\EnvironmentVariableDefinition;
10	use WPDeveloper\BetterDocs\Dependencies\DI\Definition\Exception\InvalidDefinition;
11
12	/**
13	* Resolves a environment variable definition to a value.
14	*
15	* @author James Harris <james.harris@icecave.com.au>
16	*/
17	class EnvironmentVariableResolver implements DefinitionResolver
18	{
19	/**
20	* @var DefinitionResolver
21	*/
22	private $definitionResolver;
23
24	/**
25	* @var callable
26	*/
27	private $variableReader;
28
29	public function __construct(DefinitionResolver $definitionResolver, $variableReader = 'getenv')
30	{
31	$this->definitionResolver = $definitionResolver;
32	$this->variableReader = $variableReader;
33	}
34
35	/**
36	* Resolve an environment variable definition to a value.
37	*
38	* @param EnvironmentVariableDefinition $definition
39	*
40	* {@inheritdoc}
41	*/
42	public function resolve(Definition $definition, array $parameters = [])
43	{
44	$value = call_user_func($this->variableReader, $definition->getVariableName());
45
46	if (false !== $value) {
47	return $value;
48	}
49
50	if (!$definition->isOptional()) {
51	throw new InvalidDefinition(sprintf(
52	"The environment variable '%s' has not been defined",
53	$definition->getVariableName()
54	));
55	}
56
57	$value = $definition->getDefaultValue();
58
59	// Nested definition
60	if ($value instanceof Definition) {
61	return $this->definitionResolver->resolve($value);
62	}
63
64	return $value;
65	}
66
67	public function isResolvable(Definition $definition, array $parameters = []) : bool
68	{
69	return true;
70	}
71	}
72