weather.py

import requests

from utility import *


class Weather:
	def __init__(self, city: str, dt: str, current_dt: int,
				 full_day: bool = False):
		self.city, self.country = get_english_names(city)
		self.lat, self.lon = get_lat_lon(self.city)
		self.day = parse_datetime(dt.split(" ")[0] + " 03:00")
		self.dt = parse_datetime(dt)
		self.current_dt = current_dt
		self.current_url = "api.openweathermap.org/data/2.5/weather?appid=345d8217035c76f9bd352963c9f009a7&"
		self.forecast_url = "https://api.openweathermap.org/data/2.5/forecast?appid=345d8217035c76f9bd352963c9f009a7&units=metric&"
		self.history_url = "https://api.openweathermap.org/data/2.5/onecall/timemachine?appid=345d8217035c76f9bd352963c9f009a7&units=metric&"
		self.url = ""
		self.full = full_day

	def send_request(self):
		# if self.current_dt - self.dt >= 5 * 24 * 3600:
		# 	raise ValueError(
		# 		"The requested past time must be within the last 5 days!")
		# elif self.dt - self.current_dt >= 7 * 24 * 3600:
		# 	raise ValueError(
		# 		"The requested future time must be within the next 7 days!")

		if self.dt < self.current_dt:
			url = self.history_url + '&'.join(
				["lat=" + str(self.lat), "lon=" + str(self.lon),
				 "dt=" + str(self.dt)])
			self.url = url
		else:
			self.url = self.forecast_url + "q=" + self.city

		resp = requests.get(self.url)
		if resp.status_code / 100 != 2:
			raise RuntimeError(
				f"Error {resp.status_code} while getting the page")

		if self.full:
			return self.parse_full(resp.json())
		elif self.dt < self.current_dt:
			return self.parse_history(resp.json())
		else:
			return self.parse_future(resp.json())

	def parse_history(self, data) -> Tuple[str, str]:
		return self.extract_cond(data["current"])

	def parse_future(self, data) -> Tuple[str, str]:
		dt_utc = self.dt + 12600
		for h in data["list"]:
			if abs(dt_utc - h["dt"]) <= 5400:
				return self.extract_cond(h)
		return "", ""

	def extract_cond(self, pred: dict) -> Tuple[str, str]:
		temp = pred["main"]["temp"]
		cond = pred["weather"][0]["main"].lower()
		cond_persian = -1
		if "cloud" in cond:
			cond_persian = "ابری"
		elif "rain" in cond:
			cond_persian = "بارانی"
		elif "clear" in cond:
			cond_persian = "آفتابی"
		elif "snow" in cond:
			cond_persian = "برفی"
		elif "storm" in cond:
			cond_persian = "طوفانی"
		return str(temp), cond_persian

	def parse_full(self, data) -> list:
		start_time = self.day + 12600
		finish_time = start_time + (23 * 3600)
		minimums = [t["main"]["temp_min"] for t in data["list"] if start_time <= t["dt"] <= finish_time]
		maximums = [t["main"]["temp_max"] for t in data["list"] if start_time <= t["dt"] <= finish_time]
		averages = [t["main"]["temp"] for t in data["list"] if start_time <= t["dt"] <= finish_time]
		if len(averages) == 0:
			mid = 0.00
		else:
			mid = round(sum(averages) / len(averages), 2)
		return [min(minimums), max(maximums), mid]