from datetime import datetime, timezone
import random
import sqlite3
"""
This is a really, really rough plugin and needs to be redone.
"""


def insert(owner, submitter, text):
    conn = __connect()
    text = text.replace("'", "''")
    conn.execute('''
        INSERT INTO quotes (submitter, text, timestamp)
        VALUES ('{}', '{}', {})'''.format(
            submitter, text, datetime.now().replace(tzinfo=timezone.utc)))


def get(arg=None):
    conn = __connect()
    num_quotes = __get_num_quotes()
    if arg:
        ret = "SELECT id, text, timestamp FROM quotes WHERE "
        try:
            if int(arg) > num_quotes:
                return "No quote matching that number."
            ret += "id = %s" % arg
        except ValueError:
            ret += "text like '%{}%'".format(arg.lower())

        quote = conn.execute(ret)
        return __format(list(quote.fetchone()))
    else:
        return get(random.randint(0, num_quotes))


def __get_num_quotes():
    conn = __connect()
    try:
        num = conn.execute("SELECT COUNT(id) FROM quotes")
    except sqlite3.OperationalError:
        return 0
    return int(num.fetchone()[0])


def __format(quote):
    num, text, timestamp = quote
    timestamp = datetime.strptime(timestamp, '%Y-%m-%d %H:%M:%S.%f%z')
    return "{}. {}, {}".format(
        num, text, datetime.strftime(timestamp, '%Y'))


def __connect():
    return sqlite3.connect("data/quote.db")


def __init_table():
    try:
        conn = __connect()
    except sqlite3.OperationalError:
        import os
        os.makedirs("data")
        __init_table()

    conn.execute('''
        CREATE TABLE IF NOT EXISTS quotes (
            id INTEGER PRIMARY KEY, submitter TEXT,
            text TEXT, timestamp TEXT
            )''')


def run(arg=None):
    __init_table()
    return get(arg)