buypeeb/listing.py

import requests

import re, json
from datetime import datetime, timezone, timedelta

import functions

JST = timezone(timedelta(hours = 9))

class YahooAuctionsItem:
	def __init__(self, name: str, url: str):
		# note - incoming url is not validated in any way!
		self.name = name
		try:
			self.url = re.match(r"([^?]+)", url.rstrip("/")).group(1) # remove trailing slashes and query params
		except:
			# ???
			raise
		self.id = re.match(r".+\/(.+?)$", self.url) # extract "x12345" from "https://buyee.jp/whatever/blah/x12345"
		self.last_checked = datetime.fromisoformat('1970-01-01')
		self.available = True
		self.update()

	def update(self):
		try:
			# the good news is, yahoo japan returns all the data we need in handy json format
			# the bad news is that the only way to get that json format is to download the whole auction page and grep it

			# r = requests.get("https://page.auctions.yahoo.co.jp/jp/auction/k487846283").text
			r = open("yahoo.html").read()
			j = json.loads(re.match(r'.*var pageData ?= ?(\{.*?\});', r, re.DOTALL).group(1))
		except:
			raise

		j = j['items']
		self.price = float(j['price'])
		self.bids = j['bids']
		self.start_date = datetime.fromisoformat(j['starttime']).replace(tzinfo = JST)
		self.end_date = datetime.fromisoformat(j['endtime']).replace(tzinfo = JST)
		self.last_checked = datetime.now(JST)

	def price_jpy(self):
		return f"¥{self.price:.2f}"

	def price_aud(self, rate = 75.0):
		return f"${self.price / rate:.2f}"