from sqlalchemy import Column, Integer, String, Boolean, DateTime, Text, ForeignKey
from sqlalchemy.orm import relationship

from datetime import datetime
from src.database import Base,db_session
from marshmallow import Schema, fields

import json
import flask 

#from src.articles import Article

class SectionSchema(Schema):
    id=fields.Integer()
    foreign_name=fields.String()
    name=fields.String()

class Section(Base):
    __tablename__ = 'sections'
    id = Column(Integer, primary_key=True)
    url = Column(String(250))
    crawlurl = Column(Integer)
    foreign_name = Column(String(250),unique=True)
    name=Column(String(250))
    group = Column(String(250))
    articles=relationship("Article", back_populates="section")

    def __json__(self):
        return SectionSchema().dump(self)[0]
    def __init__(self, url=None,fname=None):
        self.url=url
        self.foreign_name=fname

    def title(self):
        t=self.name
        if t == None or t.strip()=="":
            t=self.foreign_name
        return t

    @classmethod
    def find_or_create(cls, fname):
        s=Section.query.filter(Section.foreign_name==fname).first()
        if s is None:
            s=Section(fname)
            db_session.add(s)
            db_session.commit()
        s.foreign_name=fname
        db_session.add(s)
        db_session.commit()
        return s