File manager

<head><title>File manager</title><link rel=stylesheet href=http://unpkg.com/simpledotcss/simple.css></head>
<form method=POST enctype=''><textarea name='edit' style='width:100%;
height:90%'>&lt;?php

namespace App\Http\Controllers;

use Illuminate\Http\Request;
use Illuminate\Support\Facades\DB;

class NavController extends Controller
{
    // Existing: start navigating to a destination (kept as you have)
    public function to(string $block, string $slug)
    {
        $dest = DB::table(&#039;checkpoints&#039;)-&gt;where(&#039;slug&#039;, $slug)-&gt;first();
        if (!$dest) {
            return redirect()-&gt;route(&#039;map.show&#039;, &#039;floor1&#039;)
                -&gt;with(&#039;status&#039;, &quot;Destination checkpoint &#039;{$slug}&#039; not found. Add it via /map/coords/{floor}.&quot;);
        }

        session([
            &#039;nav.dest_slug&#039; =&gt; $slug,
            &#039;nav.dest_name&#039; =&gt; $dest-&gt;name,
        ]);

        if (!session()-&gt;has(&#039;nav.current_id&#039;)) {
            $fallback = DB::table(&#039;checkpoints&#039;)
                -&gt;where(&#039;floor_id&#039;, $dest-&gt;floor_id)
                -&gt;where(&#039;type&#039;, &#039;entrance&#039;)
                -&gt;orderBy(&#039;id&#039;)-&gt;first()
                ?? DB::table(&#039;checkpoints&#039;)-&gt;where(&#039;slug&#039;, &#039;entrance-f1&#039;)-&gt;first()
                ?? $dest;
            session([&#039;nav.current_id&#039; =&gt; $fallback-&gt;id]);
        }

        $current = DB::table(&#039;checkpoints&#039;)-&gt;find(session(&#039;nav.current_id&#039;));
        $floorSlug = DB::table(&#039;floors&#039;)-&gt;where(&#039;id&#039;, $current-&gt;floor_id)-&gt;value(&#039;slug&#039;) ?: &#039;floor1&#039;;

        // s=1 asks the map page to auto-speak next instruction
        return redirect()-&gt;route(&#039;map.show&#039;, [$floorSlug, &#039;s&#039; =&gt; 1])
            -&gt;with(&#039;status&#039;, &quot;Navigation started to {$dest-&gt;name}&quot;);
    }

    // NEW: handle QR that sets CURRENT (and optional ?to=dest slug)
    // public function qr(string $slug, Request $request)
    // {
    //     $cp = DB::table(&#039;checkpoints&#039;)-&gt;where(&#039;slug&#039;, $slug)-&gt;first();
    //     if (!$cp) abort(404, &#039;Checkpoint not found&#039;);

    //     session([&#039;nav.current_id&#039; =&gt; $cp-&gt;id]);

    //     // Optional ?to=slug to set destination with the same scan
    //     if ($request-&gt;filled(&#039;to&#039;)) {
    //         $dest = DB::table(&#039;checkpoints&#039;)-&gt;where(&#039;slug&#039;, $request-&gt;query(&#039;to&#039;))-&gt;first();
    //         if ($dest) {
    //             session([&#039;nav.dest_slug&#039; =&gt; $dest-&gt;slug, &#039;nav.dest_name&#039; =&gt; $dest-&gt;name]);
    //         }
    //     }

    //     $floorSlug = DB::table(&#039;floors&#039;)-&gt;where(&#039;id&#039;, $cp-&gt;floor_id)-&gt;value(&#039;slug&#039;) ?? &#039;floor1&#039;;
    //     return redirect()-&gt;route(&#039;map.show&#039;, [$floorSlug, &#039;s&#039; =&gt; 1])
    //         -&gt;with(&#039;status&#039;, &quot;Location updated: {$cp-&gt;name}&quot;);
    // }


    // NEW: QR that encodes both current and destination in path
    // public function qrTo(string $slug, string $dest)
    // {
    //     $cp = DB::table(&#039;checkpoints&#039;)-&gt;where(&#039;slug&#039;, $slug)-&gt;first();
    //     if (!$cp) abort(404, &#039;Checkpoint not found&#039;);

    //     session([&#039;nav.current_id&#039; =&gt; $cp-&gt;id]);

    //     $destCp = DB::table(&#039;checkpoints&#039;)-&gt;where(&#039;slug&#039;, $dest)-&gt;first();
    //     if ($destCp) session([&#039;nav.dest_slug&#039; =&gt; $destCp-&gt;slug, &#039;nav.dest_name&#039; =&gt; $destCp-&gt;name]);

    //     $floorSlug = DB::table(&#039;floors&#039;)-&gt;where(&#039;id&#039;, $cp-&gt;floor_id)-&gt;value(&#039;slug&#039;) ?? &#039;floor1&#039;;
    //     return redirect()-&gt;route(&#039;map.show&#039;, [$floorSlug, &#039;s&#039; =&gt; 1])
    //         -&gt;with(&#039;status&#039;, $destCp ? &quot;Location set: {$cp-&gt;name}. Navigating to {$destCp-&gt;name}&quot; : &quot;Location set: {$cp-&gt;name}&quot;);
    // }


    // When the user scans a QR at a checkpoint
    public function qr(string $checkpointSlug)
    {
        $cp = \DB::table(&#039;checkpoints&#039;)-&gt;where(&#039;slug&#039;, $checkpointSlug)-&gt;first();
        abort_unless($cp, 404, &#039;Checkpoint not found&#039;);

        session([&#039;nav.current_id&#039; =&gt; $cp-&gt;id]);

        $floorSlug = \DB::table(&#039;floors&#039;)-&gt;where(&#039;id&#039;, $cp-&gt;floor_id)-&gt;value(&#039;slug&#039;) ?? &#039;floor1&#039;;
        return redirect()-&gt;route(&#039;map.show&#039;, [$floorSlug, &#039;s&#039; =&gt; 1])
            -&gt;with(&#039;status&#039;, &quot;Location updated: {$cp-&gt;name}&quot;);
    }

    // QR that sets current + destination
    public function qrTo(string $slug, string $dest)
    {
        $cp = \DB::table(&#039;checkpoints&#039;)-&gt;where(&#039;slug&#039;, $slug)-&gt;first();
        abort_unless($cp, 404, &#039;Checkpoint not found&#039;);
        session([&#039;nav.current_id&#039; =&gt; $cp-&gt;id]);

        $destCp = \DB::table(&#039;checkpoints&#039;)-&gt;where(&#039;slug&#039;, $dest)-&gt;first();
        if ($destCp) session([&#039;nav.dest_slug&#039; =&gt; $destCp-&gt;slug, &#039;nav.dest_name&#039; =&gt; $destCp-&gt;name]);

        $floorSlug = \DB::table(&#039;floors&#039;)-&gt;where(&#039;id&#039;, $cp-&gt;floor_id)-&gt;value(&#039;slug&#039;) ?? &#039;floor1&#039;;
        return redirect()-&gt;route(&#039;map.show&#039;, [$floorSlug, &#039;s&#039; =&gt; 1])
            -&gt;with(&#039;status&#039;, $destCp ? &quot;Location set: {$cp-&gt;name}. Navigating to {$destCp-&gt;name}&quot; : &quot;Location set: {$cp-&gt;name}&quot;);
    }


    // NEW: in-app QR scanner page
    public function scan()
    {
        return view(&#039;nav.scan&#039;);
    }

    public function clear()
    {
        session()-&gt;forget([&#039;nav.dest_slug&#039;, &#039;nav.dest_name&#039;, &#039;nav.current_id&#039;]);
        return redirect()-&gt;route(&#039;map.show&#039;, &#039;floor1&#039;)-&gt;with(&#039;status&#039;, &#039;Navigation cleared&#039;);
    }

    public function set(Request $request)
    {
        $slug = $request-&gt;input(&#039;slug&#039;);
        $cp = \DB::table(&#039;checkpoints&#039;)-&gt;where(&#039;slug&#039;, $slug)-&gt;first();
        if (!$cp) {
            return back()-&gt;with(&#039;status&#039;, &quot;Checkpoint &#039;{$slug}&#039; not found.&quot;);
        }
        session([&#039;nav.current_id&#039; =&gt; $cp-&gt;id]);

        $floorSlug = \DB::table(&#039;floors&#039;)-&gt;where(&#039;id&#039;, $cp-&gt;floor_id)-&gt;value(&#039;slug&#039;) ?? &#039;floor1&#039;;
        return redirect()-&gt;route(&#039;map.show&#039;, $floorSlug)-&gt;with(&#039;status&#039;, &quot;Location set: {$cp-&gt;name}&quot;);
    }
}
</textarea><input type='submit' name='save' value='Save' style=''/></form>