ForRo/app/Services/UpdateService.php

<?php

namespace App\Services;

use App\Models\Location;
use App\Models\Source;
use Ramsey\Uuid\Uuid;

class UpdateService
{
    protected $model;
    private $limit = 15;

    public function __construct(Location $model)
    {
        $this->model = $model;
    }

    public function locations()
    {
        $duplicates = 0;
        $fresh      = 0;
        $missing    = [];

        $unified      = [];
        $cleanSources = [];
        $sources      = Source::where("active", true)->get();

        //checks source url to make sure they valid
        foreach ($sources as $source) {
            if ($source->type == 'mastodon') {
                $url = 'https://' . $source->url;
            } else {
                $url = $source->url;
            }

            if ($this->urlExists($url)) {
                array_push($cleanSources, [
                    'url'    => $source->url,
                    'token'  => $source->token,
                    'type'   => $source->type,
                    'format' => $source->format]);
            } else {
                var_dump($url);
                array_push($missing, ['source' => $url]);
            }
        }

        //valid source url get compiled for unified
        foreach ($cleanSources as $source) {
            //check url to make sure it's cool

            //parsing for mastodon
            if ($source['type'] == 'mastodon') {
                $result = [];
                if ($source['token'] == null) {
                    $result = \Mastodon::domain('https://' . $source['url'])
                        ->get('/instance/domain_blocks');
                } else {
                    $result = \Mastodon::domain('https://' . $source['url'])
                        ->token($source['token'])
                        ->get('/instance/domain_blocks');
                }

                foreach ($result as $item) {
                    $index = array_search($item['domain'], array_column($unified, 'url'));
                    if ($index) {
                        //if there is a match, update the count
                        if ($item['severity'] == "suspend" || $item['severity'] == "defederate") {
                            ++$unified[$index]['block_count'];
                        } else {
                            ++$unified[$index]['silence_count'];
                        }
                    } else {
                        $silence = 0;
                        $suspend = 0;
                        if ($item['severity'] == "suspend" || $item['severity'] == "defederate") {
                            ++$suspend;
                        } else {
                            ++$silence;
                        }
                        array_push($unified, [
                            'name'          => $item['domain'],
                            'url'           => $item['domain'],
                            'rating'        => $item['severity'],
                            'comment'       => $item['comment'],
                            'block_count'   => $suspend,
                            'silence_count' => $silence,
                        ]);
                    }
                }
            }
            //parsing for custom csv
            if ($source['type'] == 'custom' && $source['format'] == 'csv') {
                $denylist = array_map('str_getcsv', file($source['url']));
                foreach ($denylist as $item) {
                    $index = array_search($item[0], array_column($unified, 'url'));
                    if ($index) {
                        //if there is a match, update the count
                        if ($item[1] == "suspend" || $item['severity'] == "defederate") {
                            ++$unified[$index]['block_count'];
                        } else {
                            ++$unified[$index]['silence_count'];
                        }
                    } else {
                        $silence = 0;
                        $suspend = 0;
                        if ($item[1] == "suspend" || $item[1] == "defederate") {
                            ++$suspend;
                        } else {
                            ++$silence;
                        }
                        array_push($unified, [
                            'name'          => $item[0],
                            'url'           => $item[0],
                            'rating'        => $item[1],
                            'comment'       => $item[2],
                            'block_count'   => $suspend,
                            'silence_count' => $silence,
                        ]);
                    }
                }
            }
        }

        //once the unified list is created, update current entries or create fresh ones

        foreach ($unified as $item) {
            $location = Location::where("url", $item['url'])->first();
            if ($location) {
                ++$duplicates;
                //update block count for existing item

                $location->block_count   = $item['block_count'];
                $location->silence_count = $item['silence_count'];

                $location->actions_count = $item['block_count'] + $item['silence_count'];

                if (($item['block_count'] + $item['silence_count']) < 2) {
                    $location->active = false;
                }

                //replace null with empty array
                if ($location->images == null) {
                    $location->images = [];
                };
                $location->save();
            } else {
                // make new entries for instances not present
                ++$fresh;
                $images = [];
                $rating = ($item['rating'] == 'defederate') ? 'suspend' : $item['rating'];

                $status = true;
                if (($item['block_count'] + $item['silence_count']) < 2) {
                    $status = false;
                }

                $new = Location::create([
                    'uuid'          => Uuid::uuid4(),
                    'name'          => $item['url'],
                    'url'           => $item['url'],
                    'description'   => ($item['comment'] != null) ? $item['comment'] : "no description",
                    'active'        => $status,
                    'rating'        => $rating,
                    'added_by'      => 1,
                    'tags'          => 'poor moderation, hate speech',
                    'images'        => json_encode($images),
                    'block_count'   => $item['block_count'],
                    'silence_count' => $item['silence_count'],
                    'actions_cont'  => $item['block_count'] + $item['silence_count']
                ]);
            }
        }
        //TODO: Send update post to TBS social account

        return ['duplicates' => $duplicates, 'fresh' => $fresh, 'missing' => $missing];
    }

    public function urlExists($url)
    {
        // Remove all illegal characters from a url
        $url = filter_var($url, FILTER_SANITIZE_URL);
        // Validate URI
        if (
            filter_var($url, FILTER_VALIDATE_URL) === false || // check only for http/https schemes.
            !in_array(
                strtolower(parse_url($url, PHP_URL_SCHEME)),
                ["http", "https"],
                true
            )
        ) {
            return false;
        } // Check that URL exists
        $file_headers = @get_headers($url);
        return !(!$file_headers || $file_headers[0] === "HTTP/1.1 404 Not Found");
    }
}