<?php

namespace App\Http\Controllers;

use Cache;
use Twitter;
use App\Tag;
use App\Note;
use Jonnybarnes\IndieWeb\Numbers;
use Illuminate\Filesystem\Filesystem;
use Jonnybarnes\WebmentionsParser\Authorship;

// Need to sort out Twitter and webmentions!

class NotesController extends Controller
{
    /**
     * Show all the notes.
     *
     * @return \Illuminte\View\Factory view
     */
    public function showNotes()
    {
        $notes = Note::orderBy('id', 'desc')->with('webmentions', 'place', 'media')->simplePaginate(10);
        foreach ($notes as $note) {
            $replies = 0;
            foreach ($note->webmentions as $webmention) {
                if ($webmention->type == 'in-reply-to') {
                    $replies++;
                }
            }
            $note->replies = $replies;
            $note->twitter = $this->checkTwitterReply($note->in_reply_to);
            $note->iso8601_time = $note->updated_at->toISO8601String();
            $note->human_time = $note->updated_at->diffForHumans();
            if ($note->location && ($note->place === null)) {
                $pieces = explode(':', $note->location);
                $latlng = explode(',', $pieces[0]);
                $note->latitude = trim($latlng[0]);
                $note->longitude = trim($latlng[1]);
                if (count($pieces) == 2) {
                    $note->address = $pieces[1];
                }
            }
            if ($note->place !== null) {
                $lnglat = explode(' ', $note->place->location);
                $note->latitude = $lnglat[1];
                $note->longitude = $lnglat[0];
                $note->address = $note->place->name;
                $note->placeLink = '/places/' . $note->place->slug;
            }
            $photoURLs = [];
            $photos = $note->getMedia();
            foreach ($photos as $photo) {
                $photoURLs[] = $photo->getUrl();
            }
            $note->photoURLs = $photoURLs;
        }

        return view('allnotes', ['notes' => $notes]);
    }

    /**
     * Show a single note.
     *
     * @param  string The id of the note
     * @return \Illuminate\View\Factory view
     */
    public function singleNote($urlId)
    {
        $numbers = new Numbers();
        $authorship = new Authorship();
        $realId = $numbers->b60tonum($urlId);
        $note = Note::find($realId);
        $replies = [];
        $reposts = [];
        $likes = [];
        foreach ($note->webmentions as $webmention) {
            /*
                reply->url      |
                reply->photo    |   Author
                reply->name     |
                reply->source
                reply->date
                reply->reply

                repost->url     |
                repost->photo   |   Author
                repost->name    |
                repost->date
                repost->source

                like->url       |
                like->photo     |   Author
                like->name      |
            */
            $microformats = json_decode($webmention->mf2);
            $authorHCard = $authorship->findAuthor($microformats);
            $content['url'] = $authorHCard['properties']['url'][0];
            $content['photo'] = $this->createPhotoLink($authorHCard['properties']['photo'][0]);
            $content['name'] = $authorHCard['properties']['name'][0];
            switch ($webmention->type) {
                case 'in-reply-to':
                    $content['source'] = $webmention->source;
                    $content['date'] = $carbon->parse($content['date'])->toDayDateTimeString();
                    $content['reply'] = $microformats['items'][0]['properties']['content'][0]['html_purified'];
                    $replies[] = $content;
                    break;

                case 'repost-of':
                    $content['date'] = $carbon->parse($content['date'])->toDayDateTimeString();
                    $content['source'] = $webmention->source;
                    $reposts[] = $content;
                    break;

                case 'like-of':
                    $likes[] = $content;
                    break;
            }
        }
        $note->twitter = $this->checkTwitterReply($note->in_reply_to);
        $note->iso8601_time = $note->updated_at->toISO8601String();
        $note->human_time = $note->updated_at->diffForHumans();
        if ($note->location && ($note->place === null)) {
            $pieces = explode(':', $note->location);
            $latlng = explode(',', $pieces[0]);
            $note->latitude = trim($latlng[0]);
            $note->longitude = trim($latlng[1]);
            if (count($pieces) == 2) {
                $note->address = $pieces[1];
            }
        }
        if ($note->place !== null) {
            $lnglat = explode(' ', $note->place->location);
            $note->latitude = $lnglat[1];
            $note->longitude = $lnglat[0];
            $note->address = $note->place->name;
            $note->placeLink = '/places/' . $note->place->slug;
        }

        $note->photoURLs = [];
        foreach ($note->getMedia() as $photo) {
            $note->photoURLs[] = $photo->getUrl();
        }

        return view('singlenote', [
            'note' => $note,
            'replies' => $replies,
            'reposts' => $reposts,
            'likes' => $likes,
        ]);
    }

    /**
     * Redirect /note/{decID} to /notes/{nb60id}.
     *
     * @param  string The decimal id of he note
     * @return \Illuminate\Routing\RedirectResponse redirect
     */
    public function singleNoteRedirect($decId)
    {
        $numbers = new Numbers();
        $realId = $numbers->numto60($decId);

        $url = config('app.url') . '/notes/' . $realId;

        return redirect($url);
    }

    /**
     * Show all notes tagged with {tag}.
     *
     * @param  string The tag
     * @return \Illuminate\View\Factory view
     */
    public function taggedNotes($tag)
    {
        $notes = Note::whereHas('tags', function ($query) use ($tag) {
            $query->where('tag', $tag);
        })->get();
        foreach ($notes as $note) {
            $note->iso8601_time = $note->updated_at->toISO8601String();
            $note->human_time = $note->updated_at->diffForHumans();
        }

        return view('taggednotes', ['notes' => $notes, 'tag' => $tag]);
    }

    /**
     * Create the photo link.
     *
     * We shall leave twitter.com and twimg.com links as they are. Then we shall
     * check for local copies, if that fails leave the link as is.
     *
     * @param  string
     * @return string
     */
    public function createPhotoLink($url)
    {
        $host = parse_url($url, PHP_URL_HOST);
        if ($host == 'pbs.twimg.com') {
            //make sure we use HTTPS, we know twitter supports it
            return str_replace('http://', 'https://', $url);
        }
        if ($host == 'twitter.com') {
            if (Cache::has($url)) {
                return Cache::get($url);
            }
            $username = parse_url($url, PHP_URL_PATH);
            try {
                $info = Twitter::getUsers(['screen_name' => $username]);
                $profile_image = $info->profile_image_url_https;
                Cache::put($url, $profile_image, 10080); //1 week
            } catch (Exception $e) {
                return $url; //not sure here
            }

            return $profile_image;
        }
        $filesystem = new Filesystem();
        if ($filesystem->exists(public_path() . '/assets/profile-images/' . $host . '/image')) {
            return '/assets/profile-images/' . $host . '/image';
        }

        return $url;
    }

    /**
     * Twitter!!!
     *
     * @param  string  The reply to URL
     * @return string | null
     */
    private function checkTwitterReply($url)
    {
        if ($url == null) {
            return;
        }

        if (mb_substr($url, 0, 20, 'UTF-8') !== 'https://twitter.com/') {
            return;
        }

        $arr = explode('/', $url);
        $tweetId = end($arr);
        if (Cache::has($tweetId)) {
            return Cache::get($tweetId);
        }
        try {
            $oEmbed = Twitter::getOembed([
                'id' => $tweetId,
                'align' => 'center',
                'omit_script' => true,
                'maxwidth' => 550,
            ]);
        } catch (\Exception $e) {
            return;
        }
        Cache::put($tweetId, $oEmbed, ($oEmbed->cache_age / 60));

        return $oEmbed;
    }
}