<?php

/*
 *
 *  ____            _        _   __  __ _                  __  __ ____
 * |  _ \ ___   ___| | _____| |_|  \/  (_)_ __   ___      |  \/  |  _ \
 * | |_) / _ \ / __| |/ / _ \ __| |\/| | | '_ \ / _ \_____| |\/| | |_) |
 * |  __/ (_) | (__|   <  __/ |_| |  | | | | | |  __/_____| |  | |  __/
 * |_|   \___/ \___|_|\_\___|\__|_|  |_|_|_| |_|\___|     |_|  |_|_|
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU Lesser General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * @author PocketMine Team
 * @link http://www.pocketmine.net/
 *
 *
 */

declare(strict_types=1);

namespace pocketmine\plugin;

use pocketmine\utils\Utils;
use function count;
use function file;
use function implode;
use function is_file;
use function pathinfo;
use function str_contains;
use function str_ends_with;
use const FILE_IGNORE_NEW_LINES;
use const FILE_SKIP_EMPTY_LINES;
use const PATHINFO_FILENAME;

/**
 * @see examples/plugins/ExampleScriptPlugin.php
 */
class ScriptPluginLoader implements PluginLoader{

	public const AUTOGENERATED_NAME_PREFIX = "ScriptPlugin_";

	public function canLoadPlugin(string $path) : bool{
		return is_file($path) && str_ends_with($path, ".php");
	}

	/**
	 * Loads the plugin contained in $file
	 */
	public function loadPlugin(string $file) : void{
		include_once $file;
	}

	/**
	 * Gets the PluginDescription from the file
	 */
	public function getPluginDescription(string $file) : ?PluginDescription{
		$content = @file($file, FILE_IGNORE_NEW_LINES | FILE_SKIP_EMPTY_LINES);
		if($content === false){
			return null;
		}

		$insideHeader = false;

		$docCommentLines = [];
		foreach($content as $line){
			if(!$insideHeader){
				if(str_contains($line, "/**")){
					$insideHeader = true;
				}else{
					continue;
				}
			}

			$docCommentLines[] = $line;

			if(str_contains($line, "*/")){
				break;
			}
		}

		$data = Utils::parseDocComment(implode("\n", $docCommentLines));
		if(count($data) !== 0){
			$data["version"] ??= "1.0.0";
			$data["name"] ??= self::AUTOGENERATED_NAME_PREFIX . pathinfo($file, PATHINFO_FILENAME);
			return new PluginDescription($data);
		}

		return null;
	}

	public function getAccessProtocol() : string{
		return "";
	}
}