from sqlor.dbpools import DBPools
from appPublic.timeUtils import strdate_add
from .excep import BusinessDateParamsError
from .const import *
async def get_business_date(sor=None):
	async def _f(sor):
		sql = "select * from params where pname = 'business_date' and del_flg='0'"
		recs = await sor.sqlExe(sql, {})
		if len(recs) > 0:
			return recs[0]['pvalue']
		raise BusinessDateParamsError

	if sor:
		return await _f(sor)
	db = DBPools()
	async with db.sqlorContext(DBNAME) as sor:
		return await _f(sor)

async def new_business_date(sor=None):
	async def _f(sor):
		dat = await get_business_date(sor)
		new_dat = strdate_add(dat, days=1)
		sql = "update params set pvalue=${new_dat}$, del_flg='0'  where pname='business_date'"
		await sor.sqlExe(sql, {'new_dat':new_dat})
	
	if sor:
		return await  _f(sor)
	db = DBPools()
	async with db.sqlorContext(DBNAME) as sor:
		return await _f(sor)
	
async def previous_business_date(sor=None):
	dat = await get_business_date(sor=sor)
	return strdate_add(dat, days=-1)

async def next_business_date(sor=None):
	dat = await get_business_date(sor=sor)
	return strdate_add(dat, days=1)