#!/usr/bin/env python3
"""
This module allows you to add topics to a list in the database and cycle
through them.
"""
import os
import threading
import random
import sqlite3

from module import commands, example

def setup(bot):
	"""
	Attempts to create the table in the database if it's not found.
	"""
	bot.memory['topic_lock'] = threading.Lock()
	con = bot.db.connect()
	cur = con.cursor()
	try:
		cur.execute("SELECT * FROM topic").fetchone()
	except sqlite3.OperationalError:
		cur.execute("CREATE TABLE topic("
			"topic STRING PRIMARY KEY,"
			"added_by STRING,"
			"added_date INT DEFAULT (STRFTIME('%s', 'now')))")
		con.commit()
	con.close()


@commands('topic')
def topic(bot, trigger):
	"""
	Picks a random topic from the database and applies it.
	"""
	channel = trigger.sender
	con = bot.db.connect()
	cur = con.cursor()
	cur.execute("SELECT topic FROM topic ORDER BY RANDOM() LIMIT 1;")
	topic = cur.fetchone()[0]
	con.close()

	bot.write(('TOPIC', channel + ' :' + topic))


@commands('addtopic')
@example('.addtopic Daily reminder to kill all cia niggers on site.')
def addTopic(bot, trigger):
	"""
	Adds the specified topic to the topic database.
	"""
	topic = trigger.group(2)
	if not topic:
		return bot.say("Please be providing a topic sir.")
	bot.memory['topic_lock'].acquire()
	con = bot.db.connect()
	cur = con.cursor()
	insert = (topic, trigger.nick)
	try:
		cur.execute("INSERT INTO topic (topic, added_by) VALUES(?,?)", 
			insert)
		confirm = "Added topic: " + topic
	except sqlite3.IntegrityError:
		confirm = "Error: " + topic + " is already in the database."
	con.commit()
	con.close()
	bot.memory['topic_lock'].release()
	bot.say(confirm)