#! /usr/bin/env python
"""
Database models for lolbot.
"""

from __future__ import print_function, unicode_literals

import requests
from datetime import datetime
from bs4 import BeautifulSoup
from sqlalchemy import (Column, String, Text, Integer, DateTime)
from sqlalchemy.ext.declarative import (declarative_base)


Model = declarative_base()


class Log(Model):
    """
    This class represents an event in the log table and inherits from a SQLAlchemy
    convenience ORM class.
    """

    __tablename__ = "log"

    id = Column(Integer, primary_key=True)
    timestamp = Column(DateTime)
    nickname = Column(String(20))
    text = Column(Text)

    def __init__(self, nickname, text, timestamp=None):
        """
        Creates an event log for the IRC logger.
        """
        if timestamp is None:
            timestamp = datetime.now()
        self.timestamp = timestamp
        self.nickname = nickname
        self.text = text

    def __repr__(self):
        return "(%s) %s: %s" % (self.timestamp.strftime("%Y-%m-%d %H:%M:%S"), self.nickname, self.text)


class Url(Model):
    """
    This class represents a saved URL and inherits from a SQLAlchemy convenience
    ORM class.
    """

    __tablename__ = "url"

    id = Column(Integer, primary_key=True)
    timestamp = Column(DateTime)
    nickname = Column(String(20))
    url = Column(String(200), unique=True)
    title = Column(Text)

    def __init__(self, nickname, url, title=None, timestamp=None):
        if timestamp is None:
            timestamp = datetime.now()
        self.timestamp = timestamp
        self.nickname = nickname
        self.url = url
        self.title = title

        # populate the title from the URL if not given.
        if title is None:
            try:
                dom = BeautifulSoup(requests.get(self.url), 'html.parser')
                self.title = dom.title.string
            except Exception:
                self.title = ''

    def __repr__(self):
        if not self.title:
            return "%s: %s" % (self.nickname, self.url)
        else:
            return "%s: %s - %s" % (self.nickname, self.url, self.title)