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import sqlite3
class BottlePlugin:
def __init__(self):
self.conn = sqlite3.connect('bottles.db')
self.cursor = self.conn.cursor()
self.create_table()
def create_table(self):
self.cursor.execute('''
CREATE TABLE IF NOT EXISTS bottles (
id INTEGER PRIMARY KEY AUTOINCREMENT,
message TEXT NOT NULL,
sender TEXT NOT NULL,
receiver TEXT NOT NULL,
status INTEGER DEFAULT 0
);
''')
self.cursor.execute('''
CREATE TABLE IF NOT EXISTS comments (
id INTEGER PRIMARY KEY AUTOINCREMENT,
bottle_id INTEGER NOT NULL,
comment TEXT NOT NULL
);
''')
self.cursor.execute('''
CREATE TABLE IF NOT EXISTS likes (
id INTEGER PRIMARY KEY AUTOINCREMENT,
bottle_id INTEGER NOT NULL,
user TEXT NOT NULL
);
''')
self.conn.commit()
def throw_bottle(self, message, sender):
self.cursor.execute("INSERT INTO bottles (message, sender, receiver) VALUES (?, ?, '')", (message, sender))
self.conn.commit()
def pick_bottle(self, receiver):
self.cursor.execute("SELECT id, message, sender FROM bottles WHERE receiver='' OR receiver=? ORDER BY RANDOM() LIMIT 1", (receiver,))
row = self.cursor.fetchone()
if row is None:
return None
bottle_id, message, sender = row
self.cursor.execute("UPDATE bottles SET receiver=? WHERE id=?", (receiver, bottle_id))
self.conn.commit()
return {'id': bottle_id, 'message': message, 'sender': sender}
def add_comment(self, bottle_id, comment):
self.cursor.execute("INSERT INTO comments (bottle_id, comment) VALUES (?, ?)", (bottle_id, comment))
self.conn.commit()
def get_comments(self, bottle_id):
self.cursor.execute("SELECT comment FROM comments WHERE bottle_id=?", (bottle_id,))
rows = self.cursor.fetchall()
return [row[0] for row in rows]
def like_bottle(self, bottle_id, user):
self.cursor.execute("INSERT INTO likes (bottle_id, user) VALUES (?, ?)", (bottle_id, user))
self.conn.commit()
def get_likes(self, bottle_id):
self.cursor.execute("SELECT user FROM likes WHERE bottle_id=?", (bottle_id,))
rows = self.cursor.fetchall()
return [row[0] for row in rows]
def clear_bottles(self):
self.cursor.execute("DELETE FROM bottles")
self.cursor.execute("DELETE FROM comments")
self.cursor.execute("DELETE FROM likes")
self.conn.commit()
plugin = BottlePlugin()
# 扔一个漂流瓶
plugin.throw_bottle('Hello, world!', 'Alice')
# 捡一个漂流瓶
bottle = plugin.pick_bottle('Bob')
if bottle is not None:
print(bottle)
# 添加评论
plugin.add_comment(1, 'Nice message!')
comments = plugin.get_comments(1)
print(comments)
# 点赞
plugin.like_bottle(1, 'Charlie')
likes = plugin.get_likes(1)
print(likes)
# 清空漂流瓶
# plugin.clear_bottles()
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