<?php
namespace ProVM\Common\Service;

use DateTimeImmutable;
use SplFileInfo;
use FilesystemIterator;
use Psr\Log\LoggerInterface;
use ProVM\Logview\Log\File;
use ProVM\Common\Define\Parser;
use ProVM\Logview\Parser as Parsers;

use function Safe\{preg_match};

class Logs
{
    public function __construct(LoggerInterface $logger, string $folder)
    {
        $this
            ->setLogger($logger)
            ->setFolder($folder);
    }

    protected LoggerInterface $logger;
    protected string $folder;

    public function getLogger(): LoggerInterface
    {
        return $this->logger;
    }
    public function getFolder(): string
    {
        return $this->folder;
    }

    public function setLogger(LoggerInterface $logger): Logs
    {
        $this->logger = $logger;
        return $this;
    }
    public function setFolder(string $folder): Logs
    {
        $this->folder = $folder;
        return $this;
    }

    public function getFiles(): array
    {
        $files = new FilesystemIterator($this->getFolder());
        $output = [];
        foreach ($files as $file) {
            if ($file->isDir()) {
                continue;
            }
            $output []= $file;
        }
        return $output;
    }
    public function getParser(string $filename): Parser
    {
        $map = [
            Parsers\Access::class => '/(access.log)/',
            Parsers\Error::class => '/(error.log)/',
            Parsers\Debug::class => '/(debug.log)/',
            Parsers\Monolog::class => '/(-\d{4}-\d{2}-\d{2}.log)/',
            Parsers\PHPDefault::class => '/(php_errors.log)/',
        ];
        foreach ($map as $class => $regex) {
            if (preg_match($regex, $filename) === 1) {
                return new $class;
            }
        }
        return new Parsers\Basic();
    }
    public function get(string $log_file): File
    {
        $filename = implode(DIRECTORY_SEPARATOR, [$this->getFolder(), $log_file]);
        $file_info = new SplFileInfo($filename);
        $parser = $this->getParser($log_file);
        return (new File())
            ->setLogger($this->getLogger())
            ->setParser($parser)
            ->setFullname($filename)
            ->setFilename($log_file)
            ->setDate((new DateTimeImmutable())->setTimestamp($file_info->getCTime()));
    }
}