<?php
/**
 * Copyright 2020 Adobe
 * All Rights Reserved.
 */
declare(strict_types=1);

namespace Magento\PageBuilder\Model\Dom\Adapter;

use DOMNode;
use RuntimeException;

/**
 * Interface for Document wrappers
 *
 * @api
 */
interface DocumentInterface
{
    /**
     * Returns string representation of document
     *
     * @return string
     */
    public function __toString(): string;

    /**
     * Create new document fragment
     *
     * @return DocumentFragmentInterface
     */
    public function createDocumentFragment(): DocumentFragmentInterface;

    /**
     * Create new document element
     *
     * @param string $name
     * @param string $value [optional]
     * @return ElementInterface
     */
    public function createElement(string $name, ?string $value = null);

    /**
     * Returns the first element matching the specified selector.
     *
     * @param string $selector
     * @return ElementInterface
     */
    public function querySelector(string $selector): ElementInterface;

    /**
     * Returns all elements matching the specified selector.
     *
     * @param string $selector
     * @return HtmlCollectionInterface
     */
    public function querySelectorAll(string $selector): HtmlCollectionInterface;

    /**
     * Dumps the internal document into a string using HTML formatting
     *
     * @param DOMNode|null $node
     * @return string
     */
    public function saveHTML(?DOMNode $node = null): string;

    /**
     * Closes the stream and any underlying resources.
     *
     * @return void
     */
    public function close(): void;

    /**
     * Separates any underlying resources from the stream.
     *
     * After the stream has been detached, the stream is in an unusable state.
     *
     * @return resource|null Underlying PHP stream, if any
     */
    public function detach();

    /**
     * Get the size of the stream if known.
     *
     * @return int|null Returns the size in bytes if known, or null if unknown.
     */
    public function getSize(): ?int;

    /**
     * Returns the current position of the file read/write pointer
     *
     * @return int Position of the file pointer
     * @throws RuntimeException on error.
     */
    public function tell(): int;

    /**
     * Returns true if the stream is at the end of the stream.
     *
     * @return bool
     */
    public function eof(): bool;

    /**
     * Returns whether or not the stream is seekable.
     *
     * @return bool
     */
    public function isSeekable(): bool;

    /**
     * Seek to a position in the stream.
     *
     * @link http://www.php.net/manual/en/function.fseek.php
     * @param int $offset Stream offset
     * @param int $whence Specifies how the cursor position will be calculated
     *     based on the seek offset. Valid values are identical to the built-in
     *     PHP $whence values for `fseek()`.  SEEK_SET: Set position equal to
     *     offset bytes SEEK_CUR: Set position to current location plus offset
     *     SEEK_END: Set position to end-of-stream plus offset.
     * @throws RuntimeException on failure.
     */
    public function seek($offset, $whence = SEEK_SET): void;

    /**
     * Seek to the beginning of the stream.
     *
     * If the stream is not seekable, this method will raise an exception;
     * otherwise, it will perform a seek(0).
     *
     * @throws RuntimeException on failure.
     * @link http://www.php.net/manual/en/function.fseek.php
     * @see seek()
     */
    public function rewind(): void;

    /**
     * Returns whether or not the stream is writable.
     *
     * @return bool
     */
    public function isWritable(): bool;

    /**
     * Write data to the stream.
     *
     * @param string $string The string that is to be written.
     * @return int Returns the number of bytes written to the stream.
     * @throws RuntimeException on failure.
     */
    public function write($string): int;

    /**
     * Returns whether or not the stream is readable.
     *
     * @return bool
     */
    public function isReadable(): bool;

    /**
     * Read data from the stream.
     *
     * @param int $length Read up to $length bytes from the object and return
     *     them. Fewer than $length bytes may be returned if underlying stream
     *     call returns fewer bytes.
     * @return string Returns the data read from the stream, or an empty string
     *     if no bytes are available.
     * @throws RuntimeException if an error occurs.
     */
    public function read($length): string;

    /**
     * Returns the remaining contents in a string
     *
     * @return string
     * @throws RuntimeException if unable to read or an error occurs while
     *     reading.
     */
    public function getContents(): string;

    /**
     * Get stream metadata as an associative array or retrieve a specific key.
     *
     * The keys returned are identical to the keys returned from PHP's
     * stream_get_meta_data() function.
     *
     * @link http://php.net/manual/en/function.stream-get-meta-data.php
     * @param string $key Specific metadata to retrieve.
     * @return array|mixed|null Returns an associative array if no key is
     *     provided. Returns a specific key value if a key is provided and the
     *     value is found, or null if the key is not found.
     */
    public function getMetadata($key = null);

    /**
     * Strips the HTML doctype, body, etc. tags that are automatically wrapped around the content.
     *
     * @return string
     */
    public function stripHtmlWrapperTags(): string;
}
