from .model import Article
from .model import ArticleSchema
#import flask
from datetime import datetime
import json
from src.database import db_session, read_json


def pagination_params(v):
    try:
        if v.has_key("per_page"):
            pp=int(v["per_page"])
        else:
            pp=20
        if v.has_key("page"):
            o=(int(v["page"])-1) *pp
        else:
            o=0
    except ValueError:
        pp=20
        o=0
    if not (isinstance(pp,int) and pp>0 and pp<10000):
        pp=20
    if not (isinstance(o,int) and o>=0 and o<100000):
        o=0
    return (pp, o)


def get_all():
    return Article.query.order_by(Article.published_date.desc()).all()

def search(s):
    return Article.query.filter(Article.title.like("%"+s+"%")).order_by(Article.published_date.desc()).limit(20).all()

def get_all_page(lim, off):
    return Article.query.order_by(Article.published_date.desc()).limit(lim).offset(off).all()


def get_section_page(section_id, lim, off):
    return Article.query.filter(Article.section_id==section_id).order_by(Article.published_date.desc()).limit(lim).offset(off).all()


def get_section_page(section_id, lim, off):
    return Article.query.filter(Article.section_id==section_id).order_by(Article.published_date.desc()).limit(lim).offset(off).all()

def section_count(section_id):
    return Article.filter(Article.section_id==section_id).query.count()