<?php

use App\Models\Study;
use App\Models\User;
use App\Services\AuditTrail\ActivityLogger;
use Spatie\MediaLibrary\MediaCollections\Models\Media;

if (! function_exists('_h')) {
    function _h(int $key): string
    {
        return Hashids::encode($key);
    }
}

if (! function_exists('unhash_it')) {
    function unhash_it(string $hashid): int
    {
        return (int) Hashids::decode($hashid)[0];
    }
}

if (! function_exists('audit')) {
    function audit(): ActivityLogger
    {
        return app(ActivityLogger::class);
    }
}

if (! function_exists('array_purge')) {
    function array_purge(array $ary): array
    {
        return array_filter($ary, fn ($v) => filled($v));
    }
}

if (! function_exists('array_trim_strings')) {
    function array_trim_strings(array $ary): array
    {
        return array_filter($ary, function ($v) {
            if (! is_string($v)) {
                return $v;
            }
            $v = trim($v);

            return blank($v) ? null : $v;
        });
    }
}

if (! function_exists('sync_agent_id')) {
    function sync_agent_id(): int
    {
        return cache()->rememberForever('sync_agent_id',
            fn () => User::where('username', '$$_pacs_sync_$$')->first()->id);
    }
}

if (! function_exists('user_per_page')) {
    function user_per_page(?int $user_id = null): int
    {
        $user_id = (int) ($user_id ?? auth()->id());

        return settings()->get("user.{$user_id}.pagination.per_page", config('app.pagination.per_page'));
    }
}

if (! function_exists('may')) {
    function may(BackedEnum|iterable|string $perm): bool
    {
        if (auth()->user()->isAdmin()) {
            return true;
        }

        return auth()->user()->can($perm);
    }
}

if (! function_exists('human_filesize')) {
    function human_filesize(int $bytes, $dec = 0): string
    {
        $size = ['B', 'KB', 'MB', 'GB', 'TB', 'PB', 'EB', 'ZB', 'YB'];
        $factor = floor((strlen($bytes) - 1) / 3);
        if ($factor == 0) {
            $dec = 0;
        }

        return sprintf("%.{$dec}f %s", $bytes / (1024 ** $factor), $size[$factor]);
    }
}

if (! function_exists('chomp')) {
    function chomp(string $s, int $len, int $right = 6): string
    {
        $length = strlen($s);
        if ($length <= ($len + $right)) {
            return $s;
        }
        $start = substr($s, 0, $len);
        $end = substr($s, -$right);

        return $start . '...' . $end;
    }
}

if (! function_exists('thumb_url')) {
    function thumb_url(Media $media): string
    {
        if ($media->mime_type === 'application/pdf') {
            return asset(Study::FALLBACK_IMAGE);
        }

        return $media->getUrl('tn') ?? asset(Study::FALLBACK_IMAGE);
    }
}

if (! function_exists('me')) {
    /**
     * Gets the user. If no user is provided, it will return the authenticated user.
     */
    function me(User|int|null $user = null): User
    {
        if (is_int($user) && $user > 0) {
            return User::find($user);
        } elseif ($user instanceof User) {
            return $user;
        } else {
            return auth()->user();
        }
    }
}