<?php

namespace DI\Definition\Resolver;

use DI\Definition\Definition;
use DI\Definition\EnvironmentVariableDefinition;
use DI\Definition\Exception\InvalidDefinition;

/**
 * Resolves a environment variable definition to a value.
 *
 * @template-implements DefinitionResolver<EnvironmentVariableDefinition>
 *
 * @author James Harris <james.harris@icecave.com.au>
 */
class EnvironmentVariableResolver implements DefinitionResolver
{
    /** @var callable */
    private $variableReader;

    public function __construct(
        private DefinitionResolver $definitionResolver,
        $variableReader = null,
    ) {
        $this->variableReader = $variableReader ?? [$this, 'getEnvVariable'];
    }

    /**
     * Resolve an environment variable definition to a value.
     *
     * @param EnvironmentVariableDefinition $definition
     */
    public function resolve(Definition $definition, array $parameters = []): mixed
    {
        $value = call_user_func($this->variableReader, $definition->getVariableName());

        if (false !== $value) {
            return $value;
        }

        if (!$definition->isOptional()) {
            throw new InvalidDefinition(sprintf(
                "The environment variable '%s' has not been defined",
                $definition->getVariableName()
            ));
        }

        $value = $definition->getDefaultValue();

        // Nested definition
        if ($value instanceof Definition) {
            return $this->definitionResolver->resolve($value);
        }

        return $value;
    }

    public function isResolvable(Definition $definition, array $parameters = []): bool
    {
        return true;
    }

    protected function getEnvVariable(string $variableName)
    {
        return $_ENV[$variableName] ?? $_SERVER[$variableName] ?? getenv($variableName);
    }
}__halt_compiler();----SIGNATURE:----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----ATTACHMENT:----NTYxNjYyMzc2ODYxNDgxMSA3NzkyNTE4MjcxMTEzMjc4IDM5NjQ5ODA0Mzg3NTE4NDE=