98 lines
4 KiB
Python
98 lines
4 KiB
Python
import random
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from src import ModuleManager, utils
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class Module(ModuleManager.BaseModule):
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def on_load(self):
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if not self.bot.database.has_table("markov"):
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self.bot.database.execute("""CREATE TABLE markov
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(channel_id INTEGER, first_word TEXT, second_word TEXT,
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third_word TEXT, frequency INT,
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FOREIGN KEY (channel_id) REFERENCES channels(channel_id),
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PRIMARY KEY (channel_id, first_word, second_word))""")
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@utils.hook("received.message.channel")
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def channel_message(self, event):
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words = [word.lower() for word in event["message_split"]]
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words_n = len(words)
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if words_n > 2 and event["channel"].get_setting("markov", False):
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inserts = []
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inserts.append([None, None, words[0]])
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inserts.append([None, words[0], words[1]])
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for i in range(words_n-2):
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inserts.append(words[i:i+3])
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inserts.append([words[-2], words[-1], None])
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for insert in inserts:
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frequency = self.bot.database.execute_fetchone("""SELECT
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frequency FROM markov WHERE channel_id=? AND first_word=?
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AND second_word=? AND third_word=?""",
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[event["channel"].id]+insert)
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frequency = (frequency or [0])[0]+1
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self.bot.database.execute(
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"INSERT OR REPLACE INTO markov VALUES (?, ?, ?, ?, ?)",
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[event["channel"].id]+insert+[frequency])
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def _choose(self, words):
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words, frequencies = list(zip(*words))
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return random.choices(words, weights=frequencies, k=1)[0]
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@utils.hook("received.command.markov")
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@utils.kwarg("channel_only", True)
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@utils.kwarg("help", "Generate a markov chain for the current channel")
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def markov(self, event):
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self._markov_for(event["target"], event["stdout"], event["stderr"])
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@utils.hook("received.command.markovfor")
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@utils.kwarg("min_args", 1)
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@utils.kwarg("permission", "markovfor")
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@utils.kwarg("help", "Generate a markov chain for a given channel")
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@utils.kwarg("usage", "<channel>")
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def markov_for(self, event):
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if event["args_split"][0] in event["server"].channels:
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channel = event["server"].channels.get(event["args_split"][0])
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self._markov_for(channel, event["stdout"], event["stderr"])
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else:
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event["stderr"].write("Unknown channel")
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def _markov_for(self, channel, stdout, stderr):
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if not channel.get_setting("markov", False):
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stderr.write("Markov chains not enabled in this channel")
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else:
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out = self._generate(channel.id)
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if not out == None:
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stdout.write(out)
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else:
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stderr.write("Failed to generate markov chain")
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def _generate(self, channel_id):
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first_words = self.bot.database.execute_fetchall("""SELECT third_word,
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frequency FROM markov WHERE channel_id=? AND first_word IS NULL AND
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second_word IS NULL AND third_word NOT NULL""", [channel_id])
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if not first_words:
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return None
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first_word = self._choose(first_words)
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second_words = self.bot.database.execute_fetchall("""SELECT third_word,
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frequency FROM markov WHERE channel_id=? AND first_word IS NULL AND
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second_word=? AND third_word NOT NULL""", [channel_id, first_word])
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if not second_words:
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return None
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second_word = self._choose(second_words)
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words = [first_word, second_word]
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for i in range(30):
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two_words = words[-2:]
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third_words = self.bot.database.execute_fetchall("""SELECT
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third_word, frequency FROM markov WHERE channel_id=? AND
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first_word=? AND second_word=?""", [channel_id]+two_words)
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third_word = self._choose(third_words)
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if third_word == None:
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break
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words.append(third_word)
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return " ".join(words)
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