#!/usr/bin/python3
import os
import re
import json
import urllib.error
from datetime import datetime
import sys

import ox
import dateparser


# upload pdfs and add metadata
import ox.api
api = ox.api.signin('https://leftove.rs/api/')

if os.path.exists('titles.json'):
    titles = json.load(open('titles.json'))
else:
    titles = api.findDocuments({
        'query': {},
        'keys': ['id', 'title', 'date'],
        'range': [0, 15000]
    })['data']['items']
    print('request titles', len(titles))
    with open('titles.json', 'w') as fd:
        json.dump(titles, fd)

fr_months = {
    'Janvier': 'January',
    'Février': 'February',
    'Mars': 'March',
    'Avril': 'April',
    'Mai': 'May',
    'Juin': 'June',
    'Juillet': 'July',
    'Août': 'August',
    'Septembre': 'September',
    'Octobre': 'October',
    'Novembre': 'November',
    'Décembre': 'December'
}

def en_title(title):
    x = title
    for fr, en in fr_months.items():
        title = title.replace(fr, en)
    return title

for doc in titles:
    date = None
    #date = dateparser.parse(doc['title'])
    #if date:
    #    print(doc['title'], type(date), date)

    title = en_title(doc['title'])

    for regexp, fmt, outfmt in (
        ('[^\d](\d\d?, [^,]+, \d{4})', '%d, %B, %Y', '%Y-%m-%d'),
        ('[^\d](\d\d?, [^,]{3}, \d{4})', '%d, %b, %Y', '%Y-%m-%d'),
        ('(\d{4}-\d{2}-\d{2})', '%Y-%m-%d', '%Y-%m-%d'),

        ('[^\d]([^, (-]+? \d+, \d{4})', '%B %d, %Y', '%Y-%m-%d'),

        ('[^\d]([^,]{3}, \d{4})', '%b, %Y', '%Y-%m'),
        ('[^\d]([^,]+?, \d{4})', '%B, %Y', '%Y-%m'),
        ('[^\d]([^ (]+?, \d{4})', '%B, %Y', '%Y-%m'),
        ('[^\d]([^ (-]+? \d{4})', '%B %Y', '%Y-%m'),
        ('[^\d]([^ (-]{3} \d{4})', '%b %Y', '%Y-%m'),
        ('(\d{4})\)', '%Y', '%Y'),
    ):
        try:
            date = re.compile(regexp).findall(title)
            if date:
                date = datetime.strptime(date[0], fmt).strftime(outfmt)
                break
        except:
            #print(date)
            date = None
            continue

    if date:
        update = False
        if doc.get('date') and len(doc.get('date')) < len(date):
            print('update', doc['id'], doc['title'], doc['date'], '=>', date)
            update = True
        elif not doc.get('date'):
            print(doc['id'], doc['title'], '==', date)
            update = True
        if update:
            r = api.editDocument({'id': doc['id'], 'date': date})
    #else:
    #    print('fail', doc['title'])