<?php

include_once __DIR__ . '/vendor/autoload.php';

use Pagerange\Markdown\MetaParsedown;
use Bhaktaraz\RSSGenerator\Item;
use Bhaktaraz\RSSGenerator\Feed;
use Bhaktaraz\RSSGenerator\Channel;
use Symfony\Component\Yaml\Yaml;

function getIcons() {
    $icons = array();
    $icons["github"] = file_get_contents('static/img/github.svg');
    $icons["gitlab"] = file_get_contents('static/img/gitlab.svg');
    $icons["gnuprivacyguard"] = file_get_contents('static/img/gnuprivacyguard.svg');
    $icons["mail"] = file_get_contents('static/img/mail.svg');
    $icons["mastodon"] = file_get_contents('static/img/mastodon.svg');
    $icons["rss"] = file_get_contents('static/img/rss.svg');
    $icons["xmpp"] = file_get_contents('static/img/xmpp.svg');
    return $icons;
}

function getBlogPosts($params) {
    $posts = scandirRec('content/blog/', 'blog', $params);
    $posts = array_reverse($posts);
    return $posts;
}

function getNotes($params) {
    $posts = scandirRec('content/notes/', 'notes', $params);
    $posts = array_reverse($posts);
    return $posts;
}

function getProjects($params) {
    $projects = scandirRec('content/projects/', 'projects', $params);
    return $projects;
}

function getReplies($params) {
    $projects = scandirRec('content/replies/', 'replies', $params);
    return $projects;
}

function getWebmentions($target) {
    $data = json_decode(file_get_contents("https://webm.yarmo.eu/get?target=$target"), true);

    foreach ($data as $id => $entry) {
        $time = strtotime($entry["created_at"]);
        $data[$id]["date"] = date("Y-m-d",$time);
        $data[$id]["time"] = date("H:i:s",$time);
    }

    return $data;
}

function getFOSS() {
    return Yaml::parseFile('content/foss/foss.yaml');
}

function getVinyl() {
    return Yaml::parseFile('content/music/vinyl.yaml');
}

function getAOTW() {
    return Yaml::parseFile('content/music/aotw.yaml');
}

function getRSS($params) {
    header("Content-Type: text/xml");
    $feed = new Feed();

    $channel = new Channel();
    $channel
        ->title($params['feed']['title'])
        ->description($params['feed']['description'])
        ->url($params['feed']['url'])
        ->atomLinkSelf($params['feed']['linkself'])
        ->appendTo($feed);

    $dates = array_column($params['posts'], 'date');
    array_multisort($dates, SORT_DESC, $params['posts']);

    foreach($params['posts'] as $post) {
        $item = new Item();
        $item
            ->title($post['title'])
            ->creator($post['author'])
            // ->content($post['content'])
            ->description($post['content'])
            ->url($post['url'])
            ->guid($post['url'], true)
            ->pubDate(strtotime($post['date']))
            ->appendTo($channel);
    }

    echo $feed;
}

function scandirRec($path, $category, $params) {
    $Parsedown = new Parsedown();
    $mp = new MetaParsedown();
    $items = array();

    // If a directory
    if(is_dir($path)) {
        $files = glob($path . '*', GLOB_MARK);
        foreach($files as $file) {
            if(is_dir($file)) {
                $items = array_merge($items, scandirRec($file, $category, $params));
            } else {
                $return = scandirRec($file, $category, $params);
                if (!empty($return)) {
                    $items[] = $return;
                }
            }
        }
        return $items;
    }

    // If a file
    if (($path == '.') || ($path == '..')) {
        return;
    }

    $content = file_get_contents($path);
    $meta = $mp->meta($content);

    switch ($category) {
        case 'blog':
            $item = array(
                        "type" => "blog",
                        "title" => $meta["title"],
                        "author" => $meta["author"],
                        "urlrel" => "/post/".$meta["slug"],
                        "url" => "https://yarmo.eu/post/".$meta["slug"],
                        "slug" => $meta["slug"],
                        "date" => $meta["date"],
                        "published" => $meta["published"],
                        "discussion" => $meta["discussion"],
                        "content" => $mp->text($content));

            $date = new DateTime($item['date']);
            $item['date_formatted'] = $date->format('Y-m-d');
            $item['date_rss'] = $date->format('Y-m-d');

            if (!$item['published'] && !(isset($params['slug']) && $item['slug'] == $params['slug'])) {
                return;
            }
            break;

        case 'notes':
            $item = array(
                        "type" => "note",
                        "title" => $meta["title"],
                        "author" => $meta["author"],
                        "urlrel" => "/post/".$meta["slug"],
                        "url" => "https://yarmo.eu/post/".$meta["slug"],
                        "slug" => $meta["slug"],
                        "date" => $meta["date"],
                        "published" => $meta["published"],
                        "discussion" => $meta["discussion"],
                        "content" => $mp->text($content));

            $date = new DateTime($item['date']);
            $item['date_formatted'] = $date->format('Y-m-d');
            $item['date_rss'] = $date->format('Y-m-d');

            if (!$item['published'] && !(isset($params['slug']) && $item['slug'] == $params['slug'])) {
                return;
            }
            break;

        case 'projects':
            $item = array(
                        "title" => $meta["title"],
                        "status" => $meta["status"],
                        "urlrel" => "/projects/".$meta["slug"],
                        "url" => "https://yarmo.eu/projects/".$meta["slug"],
                        "slug" => $meta["slug"],
                        "date" => $meta["date"],
                        "listed" => $meta["listed"],
                        "content" => $mp->text($content));

            $date = new DateTime($item['date']);
            $item['date_formatted'] = $date->format('Y-m-d');
            $item['date_rss'] = $date->format('Y-m-d');

            if (!$item['listed'] && !(isset($params['slug']) && $item['slug'] == $params['slug'])) {
                return;
            }
            break;

        case 'replies':
            $item = array(
                        "type" => "note",
                        "title" => $meta["title"],
                        "reply-url" => $meta["reply-url"],
                        "reply-title" => $meta["reply-title"],
                        "author" => $meta["author"],
                        "urlrel" => "/reply/".$meta["slug"],
                        "url" => "https://yarmo.eu/reply/".$meta["slug"],
                        "slug" => $meta["slug"],
                        "date" => $meta["date"],
                        "published" => $meta["published"],
                        "content" => $mp->text($content));

            $date = new DateTime($item['date']);
            $item['date_formatted'] = $date->format('Y-m-d');
            $item['date_rss'] = $date->format('Y-m-d');

            if (!$item['published'] && !(isset($params['slug']) && $item['slug'] == $params['slug'])) {
                return;
            }
            break;

        default:
            return;
            break;
    }

    if (isset($params['slug']) && $item['slug'] != $params['slug']) {
        return;
    }
    if (isset($params['slug'])) {
        $item["webmentions"] = array_merge(
            getWebmentions($item["url"]),
            getWebmentions("https://yarmo.eu/blog/".$meta["slug"]),
            getWebmentions("https://yarmo.eu/notes/".$meta["slug"])
        );
        $item["hasWebmentions"] = count($item["webmentions"]) > 0;
    }

    return $item;
}