reworked the guest pwa, modernized start and gallery page. added share link functionality.

app/Models/PhotoShareLink.php

@@ -0,0 +1,51 @@
+<?php
+
+namespace App\Models;
+
+use Illuminate\Database\Eloquent\Factories\HasFactory;
+use Illuminate\Database\Eloquent\Model;
+use Illuminate\Database\Eloquent\Relations\BelongsTo;
+use Illuminate\Support\Str;
+
+class PhotoShareLink extends Model
+{
+    use HasFactory;
+
+    protected $fillable = [
+        'photo_id',
+        'slug',
+        'expires_at',
+        'created_by_device_id',
+        'created_ip',
+        'last_accessed_at',
+    ];
+
+    protected $casts = [
+        'expires_at' => 'datetime',
+        'last_accessed_at' => 'datetime',
+    ];
+
+    protected static function booted(): void
+    {
+        static::creating(function (PhotoShareLink $link) {
+            if (! $link->slug) {
+                $link->slug = static::generateSlug();
+            }
+        });
+    }
+
+    public static function generateSlug(): string
+    {
+        return Str::lower(Str::random(40));
+    }
+
+    public function photo(): BelongsTo
+    {
+        return $this->belongsTo(Photo::class);
+    }
+
+    public function isExpired(): bool
+    {
+        return $this->expires_at !== null && $this->expires_at->isPast();
+    }
+}