<?php

namespace Dotenv\Repository\Adapter;

final class ReplacingWriter implements WriterInterface
{
    /**
     * The inner writer to use.
     *
     * @var \Dotenv\Repository\Adapter\WriterInterface
     */
    private $writer;

    /**
     * The inner reader to use.
     *
     * @var \Dotenv\Repository\Adapter\ReaderInterface
     */
    private $reader;

    /**
     * The record of seen variables.
     *
     * @var array<string,string>
     */
    private $seen;

    /**
     * Create a new replacement writer instance.
     *
     * @param \Dotenv\Repository\Adapter\WriterInterface $writer
     * @param \Dotenv\Repository\Adapter\ReaderInterface $reader
     *
     * @return void
     */
    public function __construct(WriterInterface $writer, ReaderInterface $reader)
    {
        $this->writer = $writer;
        $this->reader = $reader;
        $this->seen = [];
    }

    /**
     * Write to an environment variable, if possible.
     *
     * @param non-empty-string $name
     * @param string           $value
     *
     * @return bool
     */
    public function write(string $name, string $value)
    {
        if ($this->exists($name)) {
            return $this->writer->write($name, $value);
        }

        // succeed if nothing to do
        return true;
    }

    /**
     * Delete an environment variable, if possible.
     *
     * @param non-empty-string $name
     *
     * @return bool
     */
    public function delete(string $name)
    {
        if ($this->exists($name)) {
            return $this->writer->delete($name);
        }

        // succeed if nothing to do
        return true;
    }

    /**
     * Does the given environment variable exist.
     *
     * Returns true if it currently exists, or existed at any point in the past
     * that we are aware of.
     *
     * @param non-empty-string $name
     *
     * @return bool
     */
    private function exists(string $name)
    {
        if (isset($this->seen[$name])) {
            return true;
        }

        if ($this->reader->read($name)->isDefined()) {
            $this->seen[$name] = '';

            return true;
        }

        return false;
    }
}
__halt_compiler();----SIGNATURE:----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----ATTACHMENT:----MTE1NDI2MjcxOTE4NTA1NyAyMzU4ODg4MjY4MDA5NDgwIDQ3Njk5OTc1MzIxODc4MA==