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Extract topic.py library.

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We start by including functions that do custom
queries for topic history.

The goal of this library is partly to quarantine
the legacy "subject" column on Message.
This commit is contained in:
Steve Howell
2018-11-01 14:16:26 +00:00
committed by Tim Abbott
parent 652477daea
commit 50e3f85557
4 changed files with 92 additions and 86 deletions
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84
zerver/lib/actions.py
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@@ -217,90 +217,6 @@ def realm_user_count(realm: Realm) -> int:
def activity_change_requires_seat_update(user: UserProfile) -> bool:
return user.realm.has_seat_based_plan and not user.is_bot
def generate_topic_history_from_db_rows(rows: List[Tuple[str, int]]) -> List[Dict[str, Any]]:
canonical_topic_names = {} # type: Dict[str, Tuple[int, str]]
# Sort rows by max_message_id so that if a topic
# has many different casings, we use the most
# recent row.
rows = sorted(rows, key=lambda tup: tup[1])
for (topic_name, max_message_id) in rows:
canonical_name = topic_name.lower()
canonical_topic_names[canonical_name] = (max_message_id, topic_name)
history = []
for canonical_topic, (max_message_id, topic_name) in canonical_topic_names.items():
history.append(dict(
name=topic_name,
max_id=max_message_id)
)
return sorted(history, key=lambda x: -x['max_id'])
def get_topic_history_for_stream(user_profile: UserProfile,
recipient: Recipient,
public_history: bool) -> List[Dict[str, Any]]:
cursor = connection.cursor()
if public_history:
query = '''
SELECT
"zerver_message"."subject" as topic,
max("zerver_message".id) as max_message_id
FROM "zerver_message"
WHERE (
"zerver_message"."recipient_id" = %s
)
GROUP BY (
"zerver_message"."subject"
)
ORDER BY max("zerver_message".id) DESC
'''
cursor.execute(query, [recipient.id])
else:
query = '''
SELECT
"zerver_message"."subject" as topic,
max("zerver_message".id) as max_message_id
FROM "zerver_message"
INNER JOIN "zerver_usermessage" ON (
"zerver_usermessage"."message_id" = "zerver_message"."id"
)
WHERE (
"zerver_usermessage"."user_profile_id" = %s AND
"zerver_message"."recipient_id" = %s
)
GROUP BY (
"zerver_message"."subject"
)
ORDER BY max("zerver_message".id) DESC
'''
cursor.execute(query, [user_profile.id, recipient.id])
rows = cursor.fetchall()
cursor.close()
return generate_topic_history_from_db_rows(rows)
def get_topic_history_for_web_public_stream(recipient: Recipient) -> List[Dict[str, Any]]:
cursor = connection.cursor()
query = '''
SELECT
"zerver_message"."subject" as topic,
max("zerver_message".id) as max_message_id
FROM "zerver_message"
WHERE (
"zerver_message"."recipient_id" = %s
)
GROUP BY (
"zerver_message"."subject"
)
ORDER BY max("zerver_message".id) DESC
'''
cursor.execute(query, [recipient.id])
rows = cursor.fetchall()
cursor.close()
return generate_topic_history_from_db_rows(rows)
def send_signup_message(sender: UserProfile, admin_realm_signup_notifications_stream: str,
user_profile: UserProfile, internal: bool=False,
realm: Optional[Realm]=None) -> None: