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import random
from src import ModuleManager, utils
class Module(ModuleManager.BaseModule):
def _on_load(self):
if not self.bot.database.has_table("markov"):
self.bot.database.execute("""CREATE TABLE markov
(channel_id INTEGER, first_word TEXT, second_word TEXT,
third_word TEXT, frequency INT,
FOREIGN KEY (channel_id) REFERENCES channels(channel_id),
PRIMARY KEY (channel_id, first_word, second_word))""")
@utils.hook("received.message.channel")
def channel_message(self, event):
words = event["message_split"]
words_n = len(words)
if words_n > 2 and event["channel"].get_setting("markov", False):
inserts = []
inserts.append([None, None, words[0]])
inserts.append([None, words[0], words[1]])
for i in range(words_n-2):
inserts.append(words[i:i+3])
inserts.append([words[-2], words[-1], None])
inserts.append([words[-1], None, None])
for insert in inserts:
frequency = self.bot.database.execute("""SELECT frequency
FROM markov WHERE channel_id=? AND first_word=?
AND second_word=? AND third_word=?""",
[event["channel"].id]+insert)
frequency = (frequency or [0])[0]+1
self.bot.database.execute(
"INSERT OR REPLACE INTO markov VALUES (?, ?, ?, ?, ?)",
[event["channel"].id]+insert+[frequency])
print(self.generate(event["channel"].id))
def _choose(self, words):
words, frequencies = list(zip(*words))
return random.choices(words, weights=frequencies, k=1)[0]
def generate(self, channel_id):
first_words = self.bot.database.execute_fetchall("""SELECT third_word,
frequency FROM markov WHERE channel_id=? AND first_word IS NULL AND
second_word IS NULL AND third_word NOT NULL""", [channel_id])
if not first_words:
return None
first_word = self._choose(first_words)
second_words = self.bot.database.execute_fetchall("""SELECT third_word,
frequency FROM markov WHERE channel_id=? AND first_word IS NULL AND
second_word=? AND third_word NOT NULL""", [channel_id, first_word])
if not second_words:
return None
second_word = self._choose(second_words)
words = [first_word, second_word]
for i in range(30):
two_words = words[-2:]
third_words = self.bot.database.execute_fetchall("""SELECT
third_word, frequency FROM markov WHERE channel_id=? AND
first_word=? AND second_word=?""", [channel_id]+two_words)
third_word = self._choose(third_words)
if third_word == None:
break
words.append(third_word)
return " ".join(words)
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