import os
import json

import aiofiles

DATE_FORMAT = "%Y-%m-%d"

def get_datadir():
    return os.getenv('SB_DATADIR')

def get_article_path(slug):
    return os.path.join(get_datadir(), 'articles', slug + '.json')

def load_article_by_slug(slug):
    with open(get_article_path(slug), 'r') as f:
        return json.load(f)

def save_article(data):
    with open(get_article_path(data['slug']), 'r') as f:
        return json.save(data, f)

def get_date_report_path(date):
    dstr = date.strftime(DATE_FORMAT)
    return os.path.join(get_datadir(), 'days', dstr + '.json')

def load_date_report(date):
    path = get_date_report_path(date)
    if not os.path.exists(path):
        return []

    with open(path, 'r') as f:
        return json.load(f)

async def load_date_report_async(date):
    path = get_date_report_path(date)
    if not os.path.exists(path):
        return []

    async with aiofiles.open(path, 'r') as f:
        return json.loads(await f.read())

def save_date_report(date, data):
    path = get_date_report_path(date)
    os.makedirs(os.path.dirname(os.path.abspath(path)), exist_ok=True)
    with open(path, 'w') as f:
        json.dump(data, f)

async def save_date_report_async(date, data):
    path = get_date_report_path(date)
    os.makedirs(os.path.dirname(os.path.abspath(path)), exist_ok=True)
    async with aiofiles.open(path, 'w') as f:
        await f.write(json.dumps(data))