import datetime #<- will be used to set default dates on models
from cao_blogr.models.meta import Base  #<- we need to import our sqlalchemy metadata from which model classes will inherit
from sqlalchemy import (
    Column,
    Integer,
    Unicode,     #<- will provide Unicode field
    UnicodeText, #<- will provide Unicode text field
    DateTime,    #<- time abstraction field
    Index,
    ForeignKey,
)
from sqlalchemy.orm import relationship

from webhelpers2.text import urlify #<- will generate slugs
from webhelpers2.date import distance_of_time_in_words #<- human friendly dates


class BlogRecord(Base):
    __tablename__ = 'entries'
    id = Column(Integer, primary_key=True)
    title = Column(Unicode(255), unique=True, nullable=False)
    body = Column(UnicodeText, default='')
    created = Column(DateTime, default=datetime.datetime.now)
    edited = Column(DateTime, default=datetime.datetime.now)
    topic_id = Column(ForeignKey('topics.topic'), nullable=False)
    topic = relationship('Topics', backref='topic_pages')
    tag = Column(Unicode(25))
    author = Column(Unicode(50), default='')
    status = Column(Unicode(50), default='brouillon')

    @property
    def slug(self):
        return urlify(self.title)

    @property
    def created_in_words(self):
        return distance_of_time_in_words(self.created, datetime.datetime.now())


class Topics(Base):
    __tablename__ = 'topics'
    topic = Column(Unicode(25), primary_key=True)
    topic_name = Column(Unicode(25), nullable=False)
    topic_quote = Column(Unicode(255), default='')

class Tags(Base):
    __tablename__ = 'tags'
    id = Column(Integer, primary_key=True)
    topic = Column(Unicode(25))
    tag = Column(Unicode(25))
    tag_name = Column(Unicode(25), nullable=False)
    __table_args__ = (Index('topic_index', "topic", "tag"), )