<?php

namespace App\Jobs\StatusPipeline;

use App\Hashtag;
use App\Jobs\MentionPipeline\MentionPipeline;
use App\Mention;
use App\Services\AccountService;
use App\Services\CustomEmojiService;
use App\Services\StatusService;
use App\Services\TrendingHashtagService;
use App\StatusHashtag;
use App\Util\ActivityPub\Helpers;
use Illuminate\Bus\Queueable;
use Illuminate\Contracts\Queue\ShouldQueue;
use Illuminate\Foundation\Bus\Dispatchable;
use Illuminate\Queue\InteractsWithQueue;
use Illuminate\Queue\SerializesModels;
use Illuminate\Support\Facades\DB;
use Illuminate\Support\Facades\Log;

class StatusTagsPipeline implements ShouldQueue
{
    use Dispatchable, InteractsWithQueue, Queueable, SerializesModels;

    protected $activity;

    protected $status;

    /**
     * Create a new job instance.
     *
     * @return void
     */
    public function __construct($activity, $status)
    {
        $this->activity = $activity;
        $this->status = $status;
    }

    /**
     * Execute the job.
     *
     * @return void
     */
    public function handle()
    {
        $res = $this->activity;
        $status = $this->status;

        // Verify status exists
        if (! $status) {
            Log::info('StatusTagsPipeline: Status no longer exists, skipping job');

            return;
        }

        // Verify activity data exists
        if (! $res || ! isset($res['tag'])) {
            Log::info("StatusTagsPipeline: No tag data in activity for status {$status->id}, skipping job");

            return;
        }

        if (isset($res['tag']['type'], $res['tag']['name'])) {
            $res['tag'] = [$res['tag']];
        }

        $tags = collect($res['tag']);

        // Emoji
        $tags->filter(function ($tag) {
            return $tag && isset($tag['id'], $tag['icon'], $tag['name'], $tag['type']) && $tag['type'] == 'Emoji';
        })
            ->map(function ($tag) {
                CustomEmojiService::import($tag['id'], $this->status->id);
            });

        // Hashtags
        $tags->filter(function ($tag) {
            return $tag && $tag['type'] == 'Hashtag' && isset($tag['href'], $tag['name']);
        })
            ->map(function ($tag) use ($status) {
                $name = substr($tag['name'], 0, 1) == '#' ?
                    substr($tag['name'], 1) : $tag['name'];

                $banned = TrendingHashtagService::getBannedHashtagNames();

                if (count($banned)) {
                    if (in_array(strtolower($name), array_map('strtolower', $banned))) {
                        return;
                    }
                }

                if (config('database.default') === 'pgsql') {
                    $hashtag = DB::transaction(function () use ($name) {
                        $baseSlug = str_slug($name, '-', false);
                        $slug = $baseSlug;
                        $counter = 1;

                        $existing = Hashtag::where('name', $name)
                            ->lockForUpdate()
                            ->first();

                        if ($existing) {
                            if ($existing->slug !== $slug) {
                                while (Hashtag::where('slug', $slug)
                                    ->where('name', '!=', $name)
                                    ->exists()) {
                                    $slug = $baseSlug.'-'.$counter++;
                                }
                                $existing->slug = $slug;
                                $existing->save();
                            }

                            return $existing;
                        }

                        while (Hashtag::where('slug', $slug)->exists()) {
                            $slug = $baseSlug.'-'.$counter++;
                        }

                        return Hashtag::create([
                            'name' => $name,
                            'slug' => $slug,
                        ]);
                    });
                } else {
                    $hashtag = DB::transaction(function () use ($name) {
                        $baseSlug = str_slug($name, '-', false);
                        $slug = $baseSlug;
                        $counter = 1;

                        while (Hashtag::where('slug', $slug)
                            ->where('name', '!=', $name)
                            ->exists()) {
                            $slug = $baseSlug.'-'.$counter++;
                        }

                        return Hashtag::updateOrCreate(
                            ['name' => $name],
                            ['slug' => $slug]
                        );
                    });
                }

                StatusHashtag::firstOrCreate([
                    'status_id' => $status->id,
                    'hashtag_id' => $hashtag->id,
                    'profile_id' => $status->profile_id,
                    'status_visibility' => $status->scope,
                ]);
            });

        // Mentions
        $tags->filter(function ($tag) {
            return $tag &&
                $tag['type'] == 'Mention' &&
                isset($tag['href']) &&
                substr($tag['href'], 0, 8) === 'https://';
        })
            ->map(function ($tag) use ($status) {
                if (Helpers::validateLocalUrl($tag['href'])) {
                    $parts = explode('/', $tag['href']);
                    if (! $parts) {
                        return;
                    }
                    $pid = AccountService::usernameToId(end($parts));
                    if (! $pid) {
                        return;
                    }
                } else {
                    $acct = Helpers::profileFetch($tag['href']);
                    if (! $acct) {
                        return;
                    }
                    $pid = $acct->id;
                }
                $mention = new Mention;
                $mention->status_id = $status->id;
                $mention->profile_id = $pid;
                $mention->save();
                MentionPipeline::dispatch($status, $mention);
            });

        StatusService::refresh($status->id);
    }
}
