<?php
/* {{{  license notice
 *
 * Copyright © 2021 RaBe Websolutions
 *
 * This file is part of rabe/Util-Settings.
 *
 * rabe/Util-Settings is free software: you can redistribute it and/or modify
 * it under the terms of the GNU Affero General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * rabe/Util-Settings is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU Affero General Public License for more details.
 *
 * You should have received a copy of the GNU Affero General Public License
 * along with Foobar.  If not, see <https://www.gnu.org/licenses/>.
 *
 *///}}}
declare(strict_types=1);
namespace rabe\Util;

/**
 * Write Settings into a File
 * @author Norbert.e.Wagner dev@norb.me
 */
class SettingsWriter
{

	private $settings;
	private $indent = 0;

	private $start = '<?php return'.EOL.'['.EOL;
	private $end = '];'.EOL;

	private $handle;

	// Constructor {{{
	/**
	 * Constructs a new SettingsWriter Object
	 * The standard directory/naming is used from the settings Object
	 * If the settings file already esxists it is overwritten and all data in there is lost!!
	 *
	 * @param Settings $settings an object of type settings
	 * @param String $name The name midfix for the settings File
	 */
	public function __construct( Settings $settings, $name='' )
	{
		$this->settings = $settings;
		
		$file = $settings->buildFileName( $name );
		
		if ( ! $this->handle = fopen( $file, 'w' ) )
		{
			throw new ErrorException( "Can not open File: $file" );
//			throw new FileErrorException();
		}
		
		fwrite( $this->handle, $this->start );
	}
	// }}}

	// write() method {{{
	/**
	 * Writes the settings Object into a settings file
	 * If the file already exists it is overwritten!
	 *
	 * @param Settings|array $settings an object of type settings
	 */
	public function write( $settings=null )
	{
		// first run of recursion the member settings are used
		if ( !$settings ) $settings = $this->settings;
		// if a settings Object is passed make it an array, so we can use next() method 
		if ( $settings instanceof Settings) $settings = $settings->toArray();
		
		$this->indent++;
		$indent = str_pad( '', $this->indent, "\t");
		
		foreach ($settings as $key => $value)
		{
			fwrite( $this->handle, "$indent'$key' =>" );

			// recursive walk through child arrays
			if ( is_array( $value ) )
			{
				fwrite( $this->handle, "\n{$indent}[\n" );
				$this->write( $value );
				fwrite( $this->handle, "$indent]" );
			}
			else
			{
				fwrite( $this->handle, " '$value'" );
			}

			if ( next($settings) )
			{
				fwrite( $this->handle, "," );
			}
			fwrite( $this->handle, "\n" );
		}
		
		$this->indent--;
		
		if ( !$this->indent )
		{
			fwrite( $this->handle, $this->end );
			fclose($this->handle);
		}
	}
	// }}}
}

/* jEdit buffer local properties {{{
 * :folding=explicit:collapseFolds=1:
 }}}*/
?>