<?php namespace App\Services; use App\Instance; use App\Util\Blurhash\Blurhash; use Cache; class InstanceService { const CACHE_KEY_BY_DOMAIN = 'pf:services:instance:by_domain:'; const CACHE_KEY_BANNED_DOMAINS = 'instances:banned:domains'; const CACHE_KEY_UNLISTED_DOMAINS = 'instances:unlisted:domains'; const CACHE_KEY_NSFW_DOMAINS = 'instances:auto_cw:domains'; const CACHE_KEY_STATS = 'pf:services:instances:stats'; const CACHE_KEY_TOTAL_POSTS = 'pf:services:instances:self:total-posts'; const CACHE_KEY_BANNER_BLURHASH = 'pf:services:instance:header-blurhash:v1'; const CACHE_KEY_API_PEERS_LIST = 'pf:services:instance:api:peers:list:v0'; public function __construct() { ini_set('memory_limit', config('pixelfed.memory_limit', '1024M')); } public static function getByDomain($domain) { return Cache::remember(self::CACHE_KEY_BY_DOMAIN.$domain, 3600, function () use ($domain) { return Instance::whereDomain($domain)->first(); }); } public static function getBannedDomains() { return Cache::remember(self::CACHE_KEY_BANNED_DOMAINS, 1209600, function () { return Instance::whereBanned(true)->pluck('domain')->toArray(); }); } public static function getUnlistedDomains() { return Cache::remember(self::CACHE_KEY_UNLISTED_DOMAINS, 1209600, function () { return Instance::whereUnlisted(true)->pluck('domain')->toArray(); }); } public static function getNsfwDomains() { return Cache::remember(self::CACHE_KEY_NSFW_DOMAINS, 1209600, function () { return Instance::whereAutoCw(true)->pluck('domain')->toArray(); }); } public static function software($domain) { $key = 'instances:software:'.strtolower($domain); return Cache::remember($key, 86400, function () use ($domain) { $instance = Instance::whereDomain($domain)->first(); if (! $instance) { return; } return $instance->software; }); } public static function stats() { return Cache::remember(self::CACHE_KEY_STATS, 86400, function () { return [ 'total_count' => Instance::count(), 'new_count' => Instance::where('created_at', '>', now()->subDays(14))->count(), 'banned_count' => Instance::whereBanned(true)->count(), 'nsfw_count' => Instance::whereAutoCw(true)->count(), ]; }); } public static function refresh() { Cache::forget(self::CACHE_KEY_BANNED_DOMAINS); Cache::forget(self::CACHE_KEY_UNLISTED_DOMAINS); Cache::forget(self::CACHE_KEY_NSFW_DOMAINS); Cache::forget(self::CACHE_KEY_STATS); Cache::forget(self::CACHE_KEY_API_PEERS_LIST); self::getBannedDomains(); self::getUnlistedDomains(); self::getNsfwDomains(); return true; } public static function totalLocalStatuses() { return config_cache('instance.stats.total_local_posts'); } public static function headerBlurhash() { return Cache::rememberForever(self::CACHE_KEY_BANNER_BLURHASH, function () { if (str_ends_with(config_cache('app.banner_image'), 'headers/default.jpg')) { return 'UzJR]l{wHZRjM}R%XRkCH?X9xaWEjZj]kAjt'; } $cached = config_cache('instance.banner.blurhash'); if ($cached) { return $cached; } $file = config_cache('app.banner_image') ?? url(Storage::url('public/headers/default.jpg')); $image = imagecreatefromstring(file_get_contents($file)); if (! $image) { return 'UzJR]l{wHZRjM}R%XRkCH?X9xaWEjZj]kAjt'; } $width = imagesx($image); $height = imagesy($image); $pixels = []; for ($y = 0; $y < $height; $y++) { $row = []; for ($x = 0; $x < $width; $x++) { $index = imagecolorat($image, $x, $y); $colors = imagecolorsforindex($image, $index); $row[] = [$colors['red'], $colors['green'], $colors['blue']]; } $pixels[] = $row; } // Free the allocated GdImage object from memory: imagedestroy($image); $components_x = 4; $components_y = 4; $blurhash = Blurhash::encode($pixels, $components_x, $components_y); if (strlen($blurhash) > 191) { return 'UzJR]l{wHZRjM}R%XRkCH?X9xaWEjZj]kAjt'; } ConfigCacheService::put('instance.banner.blurhash', $blurhash); return $blurhash; }); } }