Backfill avatars for existing users

2026-06-24 14:41:28 +02:00
parent 598f8631f9
commit f6ec164f27
3 changed files with 171 additions and 1 deletions
@@ -0,0 +1,109 @@
+<?php
+
+use Illuminate\Database\Migrations\Migration;
+use Illuminate\Support\Collection;
+use Illuminate\Support\Facades\DB;
+use Illuminate\Support\Facades\Storage;
+use Illuminate\Support\Str;
+
+return new class extends Migration
+{
+    /**
+     * @var list<string>
+     */
+    private const COLORS = [
+        '#F97316',
+        '#22C55E',
+        '#06B6D4',
+        '#EC4899',
+        '#8B5CF6',
+        '#EAB308',
+        '#EF4444',
+        '#14B8A6',
+    ];
+
+    /**
+     * Run the migrations.
+     */
+    public function up(): void
+    {
+        DB::table('users')
+            ->select(['id', 'name'])
+            ->whereNull('avatar_path')
+            ->orderBy('id')
+            ->chunkById(100, function (Collection $users): void {
+                foreach ($users as $user) {
+                    $color = self::COLORS[random_int(0, count(self::COLORS) - 1)];
+                    $path = sprintf('avatars/generated/%d-%s.svg', $user->id, (string) Str::uuid());
+
+                    $stored = Storage::disk('public')->put(
+                        $path,
+                        $this->svg($this->initials((string) $user->name), $color),
+                    );
+
+                    if (! $stored) {
+                        throw new RuntimeException('Generated avatar could not be stored.');
+                    }
+
+                    DB::table('users')
+                        ->where('id', $user->id)
+                        ->update([
+                            'avatar_path' => $path,
+                            'avatar_color' => $color,
+                            'avatar_is_generated' => true,
+                        ]);
+                }
+            });
+    }
+
+    /**
+     * Reverse the migrations.
+     */
+    public function down(): void
+    {
+        DB::table('users')
+            ->select(['avatar_path'])
+            ->where('avatar_is_generated', true)
+            ->whereNotNull('avatar_path')
+            ->orderBy('id')
+            ->chunkById(100, function (Collection $users): void {
+                foreach ($users as $user) {
+                    Storage::disk('public')->delete($user->avatar_path);
+                }
+            });
+
+        DB::table('users')
+            ->where('avatar_is_generated', true)
+            ->update([
+                'avatar_path' => null,
+                'avatar_color' => null,
+                'avatar_is_generated' => false,
+            ]);
+    }
+
+    private function initials(string $name): string
+    {
+        $parts = preg_split('/\s+/u', trim($name)) ?: [];
+
+        if ($parts === []) {
+            return '?';
+        }
+
+        $first = mb_substr($parts[0], 0, 1);
+        $last = count($parts) > 1 ? mb_substr($parts[count($parts) - 1], 0, 1) : '';
+
+        return mb_strtoupper($first.$last);
+    }
+
+    private function svg(string $initials, string $color): string
+    {
+        $escapedInitials = htmlspecialchars($initials, ENT_QUOTES | ENT_XML1, 'UTF-8');
+
+        return <<<SVG
+<svg xmlns="http://www.w3.org/2000/svg" width="192" height="192" viewBox="0 0 192 192" role="img" aria-label="Profile avatar">
+  <rect width="192" height="192" rx="42" fill="{$color}"/>
+  <text x="50%" y="52%" dominant-baseline="middle" text-anchor="middle" fill="#ffffff" font-family="Inter, ui-sans-serif, system-ui, sans-serif" font-size="72" font-weight="700">{$escapedInitials}</text>
+</svg>
+SVG;
+    }
+};