<?php

namespace Nexus\Torrent;

class TechnicalInformation
{
    private $mediaInfo;

    private $mediaInfoArr;

    public function __construct($mediaInfo)
    {
        $this->mediaInfo = (string)$mediaInfo;
        $this->mediaInfoArr = $this->getMediaInfoArr((string)$mediaInfo);
    }

    public function getMediaInfoArr(string $mediaInfo)
    {
        $arr = preg_split('/[\r\n]+/', $mediaInfo);
        $result = [];
        $parentKey = "";
        foreach ($arr as $key => $value) {
            $value = trim($value);
            if (empty($value)) {
                continue;
            }
            $rowKeyValue = explode(':', $value);
            $rowKeyValue = array_filter(array_map('trim', $rowKeyValue));
            if (count($rowKeyValue) == 1) {
                $parentKey = $rowKeyValue[0];
            } elseif (count($rowKeyValue) == 2) {
                if (empty($parentKey)) {
                    continue;
                }
                $result[$parentKey][$rowKeyValue[0]] = $rowKeyValue[1];
            }
        }
        return $result;

    }

    public function getRuntime()
    {
        return $this->mediaInfoArr['General']['Duration'] ?? '';
    }

    public function getResolution()
    {
        $width = $this->mediaInfoArr['Video']['Width'] ?? '';
        $height = $this->mediaInfoArr['Video']['Height'] ?? '';
        $ratio = $this->mediaInfoArr['Video']['Display aspect ratio'] ?? '';
        $result = $width . 'x' . $height;
        if ($ratio) {
            $result .= "($ratio)";
        }
        return $result;
    }

    public function getBitrate()
    {
        $result = $this->mediaInfoArr['Video']['Bit rate'] ?? '';
        return $result;
    }

    public function getFramerate()
    {
        $result = $this->mediaInfoArr['Video']['Frame rate'] ?? '';
        return $result;
    }

    public function getProfile()
    {
        $result = $this->mediaInfoArr['Video']['Format profile'] ?? '';
        return $result;
    }

    public function getRefFrame()
    {
        foreach ($this->mediaInfoArr['Video'] as $key => $value) {
            if (strpos($key, 'Reference frames') !== false) {
                return $value;
            }
        }
        return '';
    }

    public function getAudios()
    {
        $result = [];
        foreach ($this->mediaInfoArr as $parentKey => $values) {
            if (strpos($parentKey, 'Audio') == false) {
                continue;
            }
            $audioInfoArr = [];
            if (!empty($values['Language'])) {
                $audioInfoArr[] = $values['Language'];
            }
            if (!empty($values['Format'])) {
                $audioInfoArr[] = $values['Format'];
            }
            if (!empty($values['Channel(s)'])) {
                $audioInfoArr[] = $values['Channel(s)'];
            }
            if (!empty($values['Bit rate'])) {
                $audioInfoArr[]= "@" . $values['Bit rate'];
            }
            if (!empty($audioInfoArr)) {
                $result[$parentKey] = implode(" ", $audioInfoArr);
            }
        }
        return $result;
    }

    public function getSubtitles()
    {
        $result = [];
        foreach ($this->mediaInfoArr as $parentKey => $values) {
            if (strpos($parentKey, 'Text') == false) {
                continue;
            }
            $audioInfoArr = [];
            if (!empty($values['Language'])) {
                $audioInfoArr[] = $values['Language'];
            }
            if (!empty($values['Format'])) {
                $audioInfoArr[] = $values['Format'];
            }
            if (!empty($audioInfoArr)) {
                $result[$parentKey] = implode(" ", $audioInfoArr);
            }
        }
        return $result;
    }

    public function renderOnDetailsPage()
    {
        global $lang_functions;
        $runtime = $this->getRuntime();
        $resolution = $this->getResolution();
        $bitrate = $this->getBitrate();
        $profile = $this->getProfile();
        $framerate = $this->getFramerate();
        $refFrame = $this->getRefFrame();
        $audios = $this->getAudios();
        $subtitles = $this->getSubtitles();
        $html = '<table>';
        if (!empty($runtime)) {

        }

    }
}