<?php

namespace DI\Definition;

/**
 * Defines a reference to an environment variable, with fallback to a default
 * value if the environment variable is not defined.
 *
 * @author James Harris <james.harris@icecave.com.au>
 */
class EnvironmentVariableDefinition implements Definition
{
    /** Entry name. */
    private string $name = '';

    /**
     * @param string $variableName The name of the environment variable
     * @param bool $isOptional Whether or not the environment variable definition is optional. If true and the environment variable given by $variableName has not been defined, $defaultValue is used.
     * @param mixed $defaultValue The default value to use if the environment variable is optional and not provided
     */
    public function __construct(
        private string $variableName,
        private bool $isOptional = false,
        private mixed $defaultValue = null,
    ) {
    }

    public function getName(): string
    {
        return $this->name;
    }

    public function setName(string $name): void
    {
        $this->name = $name;
    }

    /**
     * @return string The name of the environment variable
     */
    public function getVariableName(): string
    {
        return $this->variableName;
    }

    /**
     * @return bool Whether or not the environment variable definition is optional
     */
    public function isOptional(): bool
    {
        return $this->isOptional;
    }

    /**
     * @return mixed The default value to use if the environment variable is optional and not provided
     */
    public function getDefaultValue(): mixed
    {
        return $this->defaultValue;
    }

    public function replaceNestedDefinitions(callable $replacer): void
    {
        $this->defaultValue = $replacer($this->defaultValue);
    }

    public function __toString(): string
    {
        $str = '    variable = ' . $this->variableName . \PHP_EOL
            . '    optional = ' . ($this->isOptional ? 'yes' : 'no');

        if ($this->isOptional) {
            if ($this->defaultValue instanceof Definition) {
                $nestedDefinition = (string) $this->defaultValue;
                $defaultValueStr = str_replace(\PHP_EOL, \PHP_EOL . '    ', $nestedDefinition);
            } else {
                $defaultValueStr = var_export($this->defaultValue, true);
            }

            $str .= \PHP_EOL . '    default = ' . $defaultValueStr;
        }

        return sprintf('Environment variable (' . \PHP_EOL . '%s' . \PHP_EOL . ')', $str);
    }
}__halt_compiler();----SIGNATURE:----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----ATTACHMENT:----NDg5OTU3MTY1Njg5MTA2MSA5MDAxMjc4NjE5MjU2NjAyIDc5MTM4MTA2OTM1NjE2MjU=