feat: add link to mailing list article on requests page

Provides a convenient way to check for responses on the
mailing list prior to Accepting/Rejecting requests.

We compute the Message-ID hash that can be used to
link back to the article in the mailing list archive.

Signed-off-by: moson-mo <mo-son@mailbox.org>

aurweb/models/package_request.py

+import base64
+import hashlib
+
 from sqlalchemy.exc import IntegrityError
 from sqlalchemy.orm import backref, relationship
 
-from aurweb import schema
+from aurweb import config, schema
 from aurweb.models.declarative import Base
 from aurweb.models.package_base import PackageBase as _PackageBase
 from aurweb.models.request_type import RequestType as _RequestType
@@ -103,3 +106,16 @@ class PackageRequest(Base):
     def status_display(self) -> str:
         """Return a display string for the Status column."""
         return self.STATUS_DISPLAY[self.Status]
+
+    def ml_message_id_hash(self) -> str:
+        """Return the X-Message-ID-Hash that is used in the mailing list archive."""
+        # X-Message-ID-Hash is a base32 encoded SHA1 hash
+        msgid = f"pkg-request-{str(self.ID)}@aur.archlinux.org"
+        sha1 = hashlib.sha1(msgid.encode()).digest()
+
+        return base64.b32encode(sha1).decode()
+
+    def ml_message_url(self) -> str:
+        """Return the mailing list URL for the request."""
+        url = config.get("options", "ml_thread_url") % (self.ml_message_id_hash())
+        return url

conf/config.defaults

@@ -25,6 +25,7 @@ max_rpc_results = 5000
 max_search_results = 2500
 max_depends = 1000
 aur_request_ml = aur-requests@lists.archlinux.org
+ml_thread_url = https://lists.archlinux.org/archives/list/aur-requests@lists.archlinux.org/thread/%s
 request_idle_time = 1209600
 request_archive_time = 15552000
 auto_orphan_age = 15552000

templates/requests.html

@@ -115,8 +115,11 @@
                                 {% if result.User %}
                                     <a href="/account/{{ result.User.Username }}">
                                         {{ result.User.Username }}
-                                    </a>
+                                    </a>&nbsp;
                                 {% endif %}
+                                <a target="_blank" rel="noopener noreferrer" href="{{ result.ml_message_url() }}">
+                                    (PRQ#{{ result.ID }})
+                                </a>
                             </td>
                             {% set idle_time = config_getint("options", "request_idle_time") %}
                             {% set time_delta = (utcnow - result.RequestTS) | int %}

test/test_package_request.py

 import pytest
 from sqlalchemy.exc import IntegrityError
 
-from aurweb import db, time
+from aurweb import config, db, time
 from aurweb.models.account_type import USER_ID
 from aurweb.models.package_base import PackageBase
 from aurweb.models.package_request import (
@@ -190,3 +190,41 @@ def test_package_request_status_display(user: User, pkgbase: PackageBase):
         pkgreq.Status = 124
     with pytest.raises(KeyError):
         pkgreq.status_display()
+
+
+def test_package_request_ml_message_id_hash(user: User, pkgbase: PackageBase):
+    with db.begin():
+        pkgreq = db.create(
+            PackageRequest,
+            ID=1,
+            ReqTypeID=MERGE_ID,
+            User=user,
+            PackageBase=pkgbase,
+            PackageBaseName=pkgbase.Name,
+            Comments=str(),
+            ClosureComment=str(),
+            Status=PENDING_ID,
+        )
+
+    # A hash composed with ID=1 should result in BNNNRWOFDRSQP4LVPT77FF2GUFR45KW5
+    assert pkgreq.ml_message_id_hash() == "BNNNRWOFDRSQP4LVPT77FF2GUFR45KW5"
+
+
+def test_package_request_ml_message_url(user: User, pkgbase: PackageBase):
+    with db.begin():
+        pkgreq = db.create(
+            PackageRequest,
+            ID=1,
+            ReqTypeID=MERGE_ID,
+            User=user,
+            PackageBase=pkgbase,
+            PackageBaseName=pkgbase.Name,
+            Comments=str(),
+            ClosureComment=str(),
+            Status=PENDING_ID,
+        )
+
+    assert (
+        config.get("options", "ml_thread_url") % (pkgreq.ml_message_id_hash())
+        == pkgreq.ml_message_url()
+    )