models: add fields to allow non delegate users to declare interest in reviewing a patch

Users interested in a Patch are linked by the `interested_users` attribute on a Patch through
the PatchInterest model.
Also added a field to State to indicate how long an interest can last before it expires

Signed-off-by: andrepapoti <[email protected]>

Author: andrepapoti

patchwork/migrations/0047_patch_pending_review_and_more.py

@@ -0,0 +1,71 @@
+# Generated by Django 5.0.3 on 2024-04-02 00:11
+
+import datetime
+import django.db.models.deletion
+import django.utils.timezone
+from django.conf import settings
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+    dependencies = [
+        ('patchwork', '0046_patch_comment_events'),
+        migrations.swappable_dependency(settings.AUTH_USER_MODEL),
+    ]
+
+    operations = [
+        migrations.AddField(
+            model_name='patch',
+            name='pending_review',
+            field=models.BooleanField(default=False),
+        ),
+        migrations.AddField(
+            model_name='state',
+            name='review_interest_expiration_time',
+            field=models.DurationField(default=datetime.timedelta(days=30)),
+        ),
+        migrations.CreateModel(
+            name='PatchInterest',
+            fields=[
+                (
+                    'id',
+                    models.AutoField(
+                        auto_created=True,
+                        primary_key=True,
+                        serialize=False,
+                        verbose_name='ID',
+                    ),
+                ),
+                (
+                    'last_time_marked_for_review',
+                    models.DateTimeField(default=django.utils.timezone.now),
+                ),
+                (
+                    'patch',
+                    models.ForeignKey(
+                        on_delete=django.db.models.deletion.CASCADE,
+                        to='patchwork.patch',
+                    ),
+                ),
+                (
+                    'user',
+                    models.ForeignKey(
+                        on_delete=django.db.models.deletion.CASCADE,
+                        to=settings.AUTH_USER_MODEL,
+                    ),
+                ),
+            ],
+            options={
+                'unique_together': {('patch', 'user')},
+            },
+        ),
+        migrations.AddField(
+            model_name='patch',
+            name='interested_users',
+            field=models.ManyToManyField(
+                related_name='interested_patches',
+                through='patchwork.PatchInterest',
+                to=settings.AUTH_USER_MODEL,
+            ),
+        ),
+    ]

patchwork/models.py

@@ -245,6 +245,9 @@ class State(models.Model):
     slug = models.SlugField(max_length=100, unique=True)
     ordering = models.IntegerField(unique=True)
     action_required = models.BooleanField(default=True)
+    review_interest_expiration_time = models.DurationField(
+        default=datetime.timedelta(days=30)
+    )
 
     def __str__(self):
         return self.name
@@ -499,6 +502,10 @@ class Patch(SubmissionMixin):
         null=True,
         on_delete=models.CASCADE,
     )
+    interested_users = models.ManyToManyField(
+        User, through='PatchInterest', related_name='interested_patches'
+    )
+    pending_review = models.BooleanField(default=False)
     state = models.ForeignKey(State, null=True, on_delete=models.CASCADE)
     archived = models.BooleanField(default=False)
     hash = HashField(null=True, blank=True)
@@ -729,6 +736,15 @@ class Meta:
         ]
 
 
+class PatchInterest(models.Model):
+    patch = models.ForeignKey(Patch, on_delete=models.CASCADE)
+    user = models.ForeignKey(User, on_delete=models.CASCADE)
+    last_time_marked_for_review = models.DateTimeField(default=tz_utils.now)
+
+    class Meta:
+        unique_together = [('patch', 'user')]
+
+
 class CoverComment(EmailMixin, models.Model):
     cover = models.ForeignKey(
         Cover,