Introduce Drafts page and automatic CF creation

This introduce a new type of CommitFest a "Draft" CommitFest. This
CommitFest is never "In Progress", but it can be open. It exists for a
year. It opens when the final regular CommitFest of the year becomes "In
Progress" and stays open for exactly a year. It never becomes "In
Progress" itself.

Adding a second type of CommitFest also needed a redesign of quite a few
things, like the homepage. Also management of the CommitFests needed to
be made a bit easier, so admins don't forget to close/create Draft
CommitFests. So now, closing/opening/creating CommitFests is done
automatically when the time is right for that. A help page is also
introduced to explain the CommitFest app.

The naming of CommitFests has been changed too. Since we now have a
Draft CF every year that needs a name, it seemed reasonable to align the
names of the other CFs with that too. So each PG release cycle now has 5
regular commitfests that are called:

- PG18-1
- PG18-2
- PG18-3
- PG18-4
- PG18-Final

And a single Draft CommitFest, called:

- PG18-Draft

Finally, it also adds a small initial API endpoint for the CFBot, to
request the commitfests that need CI runs. Future PRs will extend this
API surface to also include/allow requesting the actual patches that CI
should run on.

Co-Authored-By: David G. Johnston <[email protected]>

Author: JelteF

pgcommitfest/commitfest/apiv1.py

@@ -0,0 +1,46 @@
+from django.http import (
+    HttpResponse,
+)
+
+import json
+from datetime import date, datetime, timedelta, timezone
+
+from .models import (
+    CommitFest,
+)
+
+
+def datetime_serializer(obj):
+    if isinstance(obj, date):
+        return obj.isoformat()
+
+    if isinstance(obj, datetime):
+        return obj.replace(tzinfo=timezone.utc).isoformat()
+
+    if hasattr(obj, "to_json"):
+        return obj.to_json()
+
+    raise TypeError(f"Type {type(obj)} not serializable to JSON")
+
+
+def api_response(payload, status=200, content_type="application/json"):
+    response = HttpResponse(
+        json.dumps(payload, default=datetime_serializer), status=status
+    )
+    response["Content-Type"] = content_type
+    response["Access-Control-Allow-Origin"] = "*"
+    return response
+
+
+def commitfestst_that_need_ci(request):
+    cfs = CommitFest.relevant_commitfests()
+
+    # We continue to run CI on the previous commitfest for a week after it ends
+    # to give people some time to move patches over to the next one.
+    if cfs["previous"].enddate <= datetime.now(timezone.utc).date() - timedelta(days=7):
+        del cfs["previous"]
+
+    del cfs["next_open"]
+    del cfs["final"]
+
+    return api_response({"commitfests": cfs})

pgcommitfest/commitfest/fixtures/auth_data.json

@@ -88,5 +88,41 @@
         "groups": [],
         "user_permissions": []
     }
+},
+{
+    "model": "auth.user",
+    "pk": 6,
+    "fields": {
+        "password": "",
+        "last_login": null,
+        "is_superuser": false,
+        "username": "prolific-author",
+        "first_name": "Prolific",
+        "last_name": "Author",
+        "email": "",
+        "is_staff": false,
+        "is_active": true,
+        "date_joined": "2025-01-01T00:00:00",
+        "groups": [],
+        "user_permissions": []
+    }
+},
+{
+    "model": "auth.user",
+    "pk": 7,
+    "fields": {
+        "password": "",
+        "last_login": null,
+        "is_superuser": false,
+        "username": "prolific-reviewer",
+        "first_name": "Prolific",
+        "last_name": "Reviewer",
+        "email": "",
+        "is_staff": false,
+        "is_active": true,
+        "date_joined": "2025-01-01T00:00:00",
+        "groups": [],
+        "user_permissions": []
+    }
 }
 ]

pgcommitfest/commitfest/fixtures/commitfest_data.json

@@ -24,40 +24,44 @@
     "model": "commitfest.commitfest",
     "pk": 1,
     "fields": {
-        "name": "Sample Old Commitfest",
+        "name": "PG18-3",
         "status": 4,
-        "startdate": "2024-05-01",
-        "enddate": "2024-05-31"
+        "startdate": "2024-11-01",
+        "enddate": "2024-11-30",
+        "draft": false
     }
 },
 {
     "model": "commitfest.commitfest",
     "pk": 2,
     "fields": {
-        "name": "Sample In Progress Commitfest",
+        "name": "PG18-4",
         "status": 3,
         "startdate": "2025-01-01",
-        "enddate": "2025-02-28"
+        "enddate": "2025-01-31",
+        "draft": false
     }
 },
 {
     "model": "commitfest.commitfest",
     "pk": 3,
     "fields": {
-        "name": "Sample Open Commitfest",
+        "name": "PG18-Final",
         "status": 2,
         "startdate": "2025-03-01",
-        "enddate": "2025-03-31"
+        "enddate": "2025-03-31",
+        "draft": false
     }
 },
 {
     "model": "commitfest.commitfest",
     "pk": 4,
     "fields": {
-        "name": "Sample Future Commitfest",
-        "status": 1,
-        "startdate": "2025-05-01",
-        "enddate": "2025-05-31"
+        "name": "PG18-Drafts",
+        "status": 2,
+        "startdate": "2024-03-01",
+        "enddate": "2025-02-28",
+        "draft": true
     }
 },
 {
@@ -237,6 +241,33 @@
         ]
     }
 },
+{
+    "model": "commitfest.patch",
+    "pk": 8,
+    "fields": {
+        "name": "Test DGJ Multi-Author and Reviewer",
+        "topic": 3,
+        "wikilink": "",
+        "gitlink": "",
+        "targetversion": 1,
+        "committer": 4,
+        "created": "2025-02-01T00:00:00",
+        "modified": "2025-02-01T00:00:00",
+        "lastmail": "2025-02-01T00:00:00",
+        "authors": [
+            3,
+            6
+        ],
+        "reviewers": [
+            1,
+            7
+        ],
+        "subscribers": [],
+        "mailthread_set": [
+            8
+        ]
+    }
+},
 {
     "model": "commitfest.patchoncommitfest",
     "pk": 1,
@@ -325,6 +356,17 @@
         "status": 1
     }
 },
+{
+    "model": "commitfest.patchoncommitfest",
+    "pk": 9,
+    "fields": {
+        "patch": 8,
+        "commitfest": 4,
+        "enterdate": "2025-02-01T00:00:00",
+        "leavedate": null,
+        "status": 1
+    }
+},
 {
     "model": "commitfest.patchhistory",
     "pk": 1,
@@ -632,6 +674,33 @@
         "latestmsgid": "example@message-31"
     }
 },
+{
+    "model": "commitfest.mailthread",
+    "pk": 8,
+    "fields": {
+        "messageid": "dgj-example@message-08",
+        "subject": "Test DGJ Multi-Author and Reviewer",
+        "firstmessage": "2025-02-01T00:00:00",
+        "firstauthor": "[email protected]",
+        "latestmessage": "2025-02-01T00:00:00",
+        "latestauthor": "[email protected]",
+        "latestsubject": "Test DGJ Multi-Author and Reviewer",
+        "latestmsgid": "dgj-example@message-08"
+    }
+},
+{
+    "model": "commitfest.mailthreadattachment",
+    "pk": 8,
+    "fields": {
+        "mailthread": 8,
+        "messageid": "dgj-example@message-08",
+        "attachmentid": 1,
+        "filename": "v1-0001-content.patch",
+        "date": "2025-02-01T00:00:00",
+        "author": "[email protected]",
+        "ispatch": true
+    }
+},
 {
     "model": "commitfest.patchstatus",
     "pk": 1,

pgcommitfest/commitfest/migrations/0011_add_draft_remove_future.py

@@ -0,0 +1,24 @@
+# Generated by Django 4.2.19 on 2025-06-08 10:47
+
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+    dependencies = [
+        ("commitfest", "0010_add_failing_since_column"),
+    ]
+
+    operations = [
+        migrations.AddField(
+            model_name="commitfest",
+            name="draft",
+            field=models.BooleanField(default=False),
+        ),
+        migrations.AlterField(
+            model_name="commitfest",
+            name="status",
+            field=models.IntegerField(
+                choices=[(2, "Open"), (3, "In Progress"), (4, "Closed")], default=2
+            ),
+        ),
+    ]

pgcommitfest/commitfest/migrations/0012_add_status_related_constraints.py

@@ -0,0 +1,68 @@
+from django.db import migrations
+
+
+class Migration(migrations.Migration):
+    dependencies = [
+        ("commitfest", "0011_add_draft_remove_future"),
+    ]
+    operations = [
+        migrations.RunSQL(
+            """
+CREATE UNIQUE INDEX cf_enforce_maxoneopen_idx
+ON commitfest_commitfest (status, draft)
+WHERE status not in (1,4);
+""",
+            reverse_sql="""
+DROP INDEX IF EXISTS cf_enforce_maxoneopen_idx;
+""",
+        ),
+        migrations.RunSQL(
+            """
+CREATE UNIQUE INDEX poc_enforce_maxoneoutcome_idx
+ON commitfest_patchoncommitfest (patch_id)
+WHERE status not in (5);
+""",
+            reverse_sql="""
+DROP INDEX IF EXISTS poc_enforce_maxoneoutcome_idx;
+""",
+        ),
+        migrations.RunSQL(
+            """
+ALTER TABLE commitfest_patchoncommitfest
+ADD CONSTRAINT status_and_leavedate_correlation
+CHECK ((status IN (4,5,6,7,8)) = (leavedate IS NOT NULL));
+""",
+            reverse_sql="""
+ALTER TABLE commitfest_patchoncommitfest
+DROP CONSTRAINT IF EXISTS status_and_leavedate_correlation;
+""",
+        ),
+        migrations.RunSQL(
+            """
+COMMENT ON COLUMN commitfest_patchoncommitfest.leavedate IS
+$$A leave date is recorded in two situations, both of which
+means this particular patch-cf combination became inactive
+on the corresponding date.  For status 5 the patch was moved
+to some other cf.  For 4,6,7, and 8, this was the final cf.
+$$
+""",
+            reverse_sql="""
+COMMENT ON COLUMN commitfest_patchoncommitfest.leavedate IS NULL;
+""",
+        ),
+        migrations.RunSQL(
+            """
+COMMENT ON TABLE commitfest_patchoncommitfest IS
+$$This is a re-entrant table: patches may become associated
+with a given cf multiple times, resetting the entrydate and clearing
+the leavedate each time.  Non-final statuses never have a leavedate
+while final statuses always do.  The final status of 5 (moved) is
+special in that all but one of the rows a patch has in this table
+must have it as the status.
+$$
+""",
+            reverse_sql="""
+COMMENT ON TABLE commitfest_patchoncommitfest IS NULL;
+""",
+        ),
+    ]