From 958d2a63cb79b791927ed7545746f94ce1e4b06e Mon Sep 17 00:00:00 2001
From: "Alexis A." <alexis.athlani@gmail.com>
Date: Wed, 10 Jul 2024 15:30:32 +0200
Subject: [PATCH 1/4] test(user): add test to make sure user with same email
 but different casing cannot be created

---
 users/tests/tests.py | 22 ++++++++++++++++++++++
 1 file changed, 22 insertions(+)
 create mode 100644 users/tests/tests.py

diff --git a/users/tests/tests.py b/users/tests/tests.py
new file mode 100644
index 000000000..fec5a1ce8
--- /dev/null
+++ b/users/tests/tests.py
@@ -0,0 +1,22 @@
+from django.db.utils import IntegrityError
+from django.test import TestCase
+
+from users.models import User
+
+
+class TestUsers(TestCase):
+    def test_user_with_the_same_email_cannot_be_created(self):
+        def create_two_users_with_same_email():
+            User.objects.create(email="test@gmail.com")
+            User.objects.create(email="test@gmail.com")
+
+        with self.assertRaises(IntegrityError):
+            create_two_users_with_same_email()
+
+    def test_user_with_the_same_email_but_different_casing_cannot_be_created(self):
+        def create_two_users_with_same_email_but_different_casing():
+            User.objects.create(email="test@gmail.com")
+            User.objects.create(email="TEST@gmail.com")
+
+        with self.assertRaises(IntegrityError):
+            create_two_users_with_same_email_but_different_casing()

From ac8c6367287f4e75873bffc21af12dc4fbafea83 Mon Sep 17 00:00:00 2001
From: "Alexis A." <alexis.athlani@gmail.com>
Date: Tue, 26 Nov 2024 12:14:35 +0100
Subject: [PATCH 2/4] fix(users): make email unique lower or uppercase

---
 .../0012_user_user_email_ci_uniqueness.py     | 34 +++++++++++++++++++
 users/models.py                               |  8 +++++
 2 files changed, 42 insertions(+)
 create mode 100644 users/migrations/0012_user_user_email_ci_uniqueness.py

diff --git a/users/migrations/0012_user_user_email_ci_uniqueness.py b/users/migrations/0012_user_user_email_ci_uniqueness.py
new file mode 100644
index 000000000..616264ca7
--- /dev/null
+++ b/users/migrations/0012_user_user_email_ci_uniqueness.py
@@ -0,0 +1,34 @@
+# Generated by Django 4.2.13 on 2024-11-26 11:07
+
+from django.db import migrations, models
+import django.db.models.functions.text
+from django.db.utils import IntegrityError
+
+
+def remove_duplicate_emails(apps, schema_editor):
+    User = apps.get_model("users", "User")
+    users = User.objects.all()
+
+    for user in users:
+        user.email = user.email.lower()
+        try:
+            user.save()
+        except IntegrityError:
+            user.delete()
+
+
+class Migration(migrations.Migration):
+    atomic = False
+    dependencies = [
+        ("users", "0011_alter_user_organism"),
+    ]
+
+    operations = [
+        migrations.RunPython(remove_duplicate_emails),
+        migrations.AddConstraint(
+            model_name="user",
+            constraint=models.UniqueConstraint(
+                django.db.models.functions.text.Lower("email"), name="user_email_ci_uniqueness"
+            ),
+        ),
+    ]
diff --git a/users/models.py b/users/models.py
index e4dc91779..1e5953e2d 100644
--- a/users/models.py
+++ b/users/models.py
@@ -5,6 +5,8 @@
 from django.utils import timezone
 
 from utils.validators import is_alpha_validator
+from django.db.models.constraints import UniqueConstraint
+from django.db.models.functions import Lower
 
 from .managers import UserManager
 
@@ -92,3 +94,9 @@ def save(self, *args, **kwargs):
     class Meta:
         verbose_name = "Utilisateur"
         ordering = ["email"]
+        constraints = [
+            UniqueConstraint(
+                Lower("email"),
+                name="user_email_ci_uniqueness",
+            ),
+        ]

From 974b0aebcee8f39074f8db44318cb891ba5fd84d Mon Sep 17 00:00:00 2001
From: "Alexis A." <alexis.athlani@gmail.com>
Date: Tue, 26 Nov 2024 12:16:46 +0100
Subject: [PATCH 3/4] chore(models): fix import ordering

---
 users/models.py | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/users/models.py b/users/models.py
index 1e5953e2d..055507ea8 100644
--- a/users/models.py
+++ b/users/models.py
@@ -2,11 +2,11 @@
 
 from django.contrib.auth.models import AbstractUser
 from django.db import models
+from django.db.models.constraints import UniqueConstraint
+from django.db.models.functions import Lower
 from django.utils import timezone
 
 from utils.validators import is_alpha_validator
-from django.db.models.constraints import UniqueConstraint
-from django.db.models.functions import Lower
 
 from .managers import UserManager
 

From 693b08f634a8a5351b82fe527a88439250bcd819 Mon Sep 17 00:00:00 2001
From: "Alexis A." <alexis.athlani@gmail.com>
Date: Tue, 26 Nov 2024 12:20:09 +0100
Subject: [PATCH 4/4] fix(migrations): merge

---
 users/migrations/0016_merge_20241126_1219.py | 12 ++++++++++++
 1 file changed, 12 insertions(+)
 create mode 100644 users/migrations/0016_merge_20241126_1219.py

diff --git a/users/migrations/0016_merge_20241126_1219.py b/users/migrations/0016_merge_20241126_1219.py
new file mode 100644
index 000000000..382c60c41
--- /dev/null
+++ b/users/migrations/0016_merge_20241126_1219.py
@@ -0,0 +1,12 @@
+# Generated by Django 4.2.13 on 2024-11-26 11:19
+
+from django.db import migrations
+
+
+class Migration(migrations.Migration):
+    dependencies = [
+        ("users", "0012_user_user_email_ci_uniqueness"),
+        ("users", "0015_auto_20240930_1148"),
+    ]
+
+    operations = []