234 lines
6.9 KiB
Python
234 lines
6.9 KiB
Python
import sqlite3
|
|
|
|
class DB:
|
|
def __init__(self, conn):
|
|
self.conn = conn
|
|
pass
|
|
|
|
def get_subforums(self):
|
|
return self._db().execute('''
|
|
select f.forum_id, name, description, thread_id, title, update_time
|
|
from subforums f
|
|
left join threads t
|
|
on t.thread_id = (
|
|
select tt.thread_id
|
|
from threads tt
|
|
where f.forum_id = tt.forum_id
|
|
order by update_time desc
|
|
limit 1
|
|
)
|
|
'''
|
|
)
|
|
|
|
def get_subforum(self, subforum):
|
|
return self._db().execute('''
|
|
select name, description
|
|
from subforums
|
|
where forum_id = ?
|
|
''',
|
|
(subforum,)
|
|
).fetchone()
|
|
|
|
def get_threads(self, subforum):
|
|
return self._db().execute('''
|
|
select t.thread_id, title, t.create_time, t.update_time, t.author_id, name, count(1)
|
|
from threads t, users, comments c
|
|
where forum_id = ? and user_id = t.author_id and t.thread_id = c.thread_id
|
|
group by t.thread_id
|
|
''',
|
|
(subforum,)
|
|
)
|
|
|
|
def get_thread(self, thread):
|
|
db = self._db()
|
|
title, text, author, author_id, create_time, modify_time = db.execute('''
|
|
select title, text, name, author_id, create_time, modify_time
|
|
from threads, users
|
|
where thread_id = ? and author_id = user_id
|
|
''',
|
|
(thread,)
|
|
).fetchone()
|
|
comments = db.execute('''
|
|
select comment_id, parent_id, name, text, create_time, modify_time
|
|
from comments, users
|
|
where thread_id = ? and author_id = user_id
|
|
''',
|
|
(thread,)
|
|
)
|
|
return title, text, author, author_id, create_time, modify_time, comments
|
|
|
|
def get_thread_title(self, thread_id):
|
|
return self._db().execute('''
|
|
select title
|
|
from threads
|
|
where thread_id = ?
|
|
''',
|
|
(thread_id,)
|
|
).fetchone()
|
|
|
|
def get_recent_threads(self, limit):
|
|
return self._db().execute('''
|
|
select thread_id, title, modify_date
|
|
from threads
|
|
order by modify_date
|
|
limit ?
|
|
''',
|
|
(limit,)
|
|
)
|
|
|
|
def get_comments(self, thread):
|
|
return self._db().execute('''
|
|
select text
|
|
from comments
|
|
where thread_id = ?
|
|
''',
|
|
(thread,)
|
|
)
|
|
|
|
def get_subcomments(self, comment_id):
|
|
db = self._db()
|
|
thread_id, parent_id, title = db.execute('''
|
|
select threads.thread_id, parent_id, title
|
|
from threads, comments
|
|
where comment_id = ? and threads.thread_id = comments.thread_id
|
|
''',
|
|
(comment_id,)
|
|
).fetchone()
|
|
# Recursive CTE, see https://www.sqlite.org/lang_with.html
|
|
return thread_id, parent_id, title, db.execute('''
|
|
with recursive
|
|
descendant_of(id) as (
|
|
select comment_id from comments where comment_id = ?
|
|
union
|
|
select comment_id from descendant_of, comments where id = parent_id
|
|
)
|
|
select id, parent_id, name, text, create_time, modify_time from descendant_of, comments, users
|
|
where id = comment_id and user_id = author_id
|
|
''',
|
|
(comment_id,)
|
|
)
|
|
|
|
def get_user_password(self, username):
|
|
return self._db().execute('''
|
|
select user_id, password
|
|
from users
|
|
where name = ?
|
|
''',
|
|
(username,)
|
|
).fetchone()
|
|
|
|
def get_user_public_info(self, user_id):
|
|
return self._db().execute('''
|
|
select name, about
|
|
from users
|
|
where user_id = ?
|
|
''',
|
|
(user_id,)
|
|
).fetchone()
|
|
|
|
def get_user_private_info(self, user_id):
|
|
return self._db().execute('''
|
|
select about
|
|
from users
|
|
where user_id = ?
|
|
''',
|
|
(user_id,)
|
|
).fetchone()
|
|
|
|
def set_user_private_info(self, user_id, about):
|
|
db = self._db()
|
|
db.execute('''
|
|
update users
|
|
set about = ?
|
|
where user_id = ?
|
|
''',
|
|
(about, user_id)
|
|
)
|
|
db.commit()
|
|
|
|
def add_thread(self, author_id, forum_id, title, text, time):
|
|
db = self._db()
|
|
c = db.cursor()
|
|
c.execute('''
|
|
insert into threads (author_id, forum_id, title, text,
|
|
create_time, modify_time, update_time)
|
|
values (?, ?, ?, ?, ?, ?, ?)
|
|
''',
|
|
(author_id, forum_id, title, text, time, time, time)
|
|
)
|
|
rowid = c.lastrowid
|
|
db.commit()
|
|
return db.execute('''
|
|
select thread_id
|
|
from threads
|
|
where rowid = ?
|
|
''',
|
|
(rowid,)
|
|
).fetchone()
|
|
|
|
def delete_thread(self, user_id, thread_id):
|
|
db = self._db()
|
|
c = db.cursor()
|
|
c.execute('''
|
|
delete
|
|
from threads
|
|
where thread_id = ? and author_id = ?
|
|
''',
|
|
(thread_id, user_id)
|
|
)
|
|
db.commit()
|
|
return c.rowcount > 0
|
|
|
|
def add_comment_to_thread(self, thread_id, author_id, text, time):
|
|
db = self._db()
|
|
c = db.cursor()
|
|
c.execute('''
|
|
insert into comments(thread_id, author_id, text, create_time, modify_time)
|
|
select ?, ?, ?, ?, ?
|
|
from threads
|
|
where thread_id = ?
|
|
''',
|
|
(thread_id, author_id, text, time, time, thread_id)
|
|
)
|
|
if c.rowcount > 0:
|
|
c.execute('''
|
|
update threads
|
|
set update_time = ?
|
|
where threads.thread_id = ?
|
|
''',
|
|
(time, thread_id)
|
|
)
|
|
db.commit()
|
|
return True
|
|
return False
|
|
|
|
def add_comment_to_comment(self, parent_id, author_id, text, time):
|
|
db = self._db()
|
|
c = db.cursor()
|
|
c.execute('''
|
|
insert into comments(thread_id, parent_id, author_id, text, create_time, modify_time)
|
|
select thread_id, ?, ?, ?, ?, ?
|
|
from comments
|
|
where comment_id = ?
|
|
''',
|
|
(parent_id, author_id, text, time, time, parent_id)
|
|
)
|
|
if c.rowcount > 0:
|
|
c.execute('''
|
|
update threads
|
|
set update_time = ?
|
|
where threads.thread_id = (
|
|
select c.thread_id
|
|
from comments c
|
|
where comment_id = ?
|
|
)
|
|
''',
|
|
(time, parent_id)
|
|
)
|
|
db.commit()
|
|
return True
|
|
return False
|
|
|
|
def _db(self):
|
|
return sqlite3.connect(self.conn)
|