From 6d63e68908820f4c2bc61c84b3c92f568213cdd0 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?J=C3=A9r=C3=A9my=20Munsch?= <github@jeremydev.ovh>
Date: Fri, 21 Aug 2026 16:11:56 +0200
Subject: [PATCH] feat(infra): add HasUuidV7CreatedAt trait to derive
 created_at from UUIDv7

---
 .../Database/Concerns/HasUuidV7CreatedAt.php  |  34 ++++++
 .../Concerns/HasUuidV7CreatedAtTest.php       | 110 ++++++++++++++++++
 2 files changed, 144 insertions(+)
 create mode 100644 src/Infra/Database/Concerns/HasUuidV7CreatedAt.php
 create mode 100644 tests/Unit/Infra/Database/Concerns/HasUuidV7CreatedAtTest.php

diff --git a/src/Infra/Database/Concerns/HasUuidV7CreatedAt.php b/src/Infra/Database/Concerns/HasUuidV7CreatedAt.php
new file mode 100644
index 0000000..45b827c
--- /dev/null
+++ b/src/Infra/Database/Concerns/HasUuidV7CreatedAt.php
@@ -0,0 +1,34 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Infra\Database\Concerns;
+
+use Illuminate\Database\Eloquent\Model;
+use Ramsey\Uuid\Uuid;
+use Shared\Helpers\UuidHelper;
+
+/** @mixin \Illuminate\Database\Eloquent\Model&\Illuminate\Database\Eloquent\Concerns\HasUuids */
+trait HasUuidV7CreatedAt
+{
+    public static function bootHasUuidV7CreatedAt(): void
+    {
+        static::creating(static function (Model $model): void {
+            if ($model->getAttribute('created_at') === null) {
+                $key = $model->getKey();
+
+                if (empty($key)) {
+                    $key = $model->newUniqueId();
+                    $model->setAttribute($model->getKeyName(), $key);
+                }
+
+                if (! empty($key) && (is_string($key) || $key instanceof \Stringable) && Uuid::isValid((string) $key)) {
+                    $uuid = Uuid::fromString((string) $key);
+                    if (UuidHelper::isV7($uuid)) {
+                        $model->setAttribute('created_at', UuidHelper::toDateTime($uuid));
+                    }
+                }
+            }
+        });
+    }
+}
diff --git a/tests/Unit/Infra/Database/Concerns/HasUuidV7CreatedAtTest.php b/tests/Unit/Infra/Database/Concerns/HasUuidV7CreatedAtTest.php
new file mode 100644
index 0000000..bb6db29
--- /dev/null
+++ b/tests/Unit/Infra/Database/Concerns/HasUuidV7CreatedAtTest.php
@@ -0,0 +1,110 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Tests\Unit\Infra\Database\Concerns;
+
+use Illuminate\Database\Eloquent\Model;
+use Illuminate\Database\Schema\Blueprint;
+use Illuminate\Support\Facades\Schema;
+use Infra\Casts\UtcDateTimeCast;
+use Infra\Database\Concerns\HasUuidV7CreatedAt;
+use Ramsey\Uuid\Uuid;
+use Tests\TestCase;
+
+covers(HasUuidV7CreatedAt::class);
+
+uses(TestCase::class);
+
+describe('HasUuidV7CreatedAt Trait Unit Tests', function (): void {
+    beforeEach(function (): void {
+        Schema::create('test_uuid_models', function (Blueprint $table): void {
+            $table->uuid('id')->primary();
+            $table->string('name');
+            $table->dateTime('created_at');
+        });
+    });
+
+    afterEach(function (): void {
+        Schema::dropIfExists('test_uuid_models');
+    });
+
+    it('automatically populates created_at from UUIDv7 upon model creation', function (): void {
+        // GIVEN
+        $expectedDate = new \DateTimeImmutable('2026-08-21 11:30:00 UTC');
+        $uuid7        = Uuid::uuid7($expectedDate)->toString();
+
+        $testModelClass = new class () extends Model
+        {
+            use HasUuidV7CreatedAt;
+
+            protected $table = 'test_uuid_models';
+
+            public $timestamps = false;
+
+            public $incrementing = false;
+
+            protected $keyType = 'string';
+
+            protected $fillable = ['id', 'name', 'created_at'];
+
+            #[\Override]
+            protected function casts(): array
+            {
+                return [
+                    'created_at' => UtcDateTimeCast::class,
+                ];
+            }
+        };
+
+        // WHEN
+        $instance = $testModelClass::query()->create([
+            'id'   => $uuid7,
+            'name' => 'Test Item',
+        ]);
+
+        // THEN
+        expect($instance->created_at)->toBeInstanceOf(\DateTimeImmutable::class)
+            ->and($instance->created_at->format('Y-m-d H:i:s'))->toBe('2026-08-21 11:30:00');
+    });
+
+    it('does not overwrite explicitly provided created_at', function (): void {
+        // GIVEN
+        $uuidDate     = new \DateTimeImmutable('2026-08-21 11:30:00 UTC');
+        $explicitDate = new \DateTimeImmutable('2026-01-01 00:00:00 UTC');
+        $uuid7        = Uuid::uuid7($uuidDate)->toString();
+
+        $testModelClass = new class () extends Model
+        {
+            use HasUuidV7CreatedAt;
+
+            protected $table = 'test_uuid_models';
+
+            public $timestamps = false;
+
+            public $incrementing = false;
+
+            protected $keyType = 'string';
+
+            protected $fillable = ['id', 'name', 'created_at'];
+
+            #[\Override]
+            protected function casts(): array
+            {
+                return [
+                    'created_at' => UtcDateTimeCast::class,
+                ];
+            }
+        };
+
+        // WHEN
+        $instance = $testModelClass::query()->create([
+            'id'         => $uuid7,
+            'name'       => 'Test Item',
+            'created_at' => $explicitDate,
+        ]);
+
+        // THEN
+        expect($instance->created_at->format('Y-m-d H:i:s'))->toBe('2026-01-01 00:00:00');
+    });
+});