116 lines
3.6 KiB
Python
116 lines
3.6 KiB
Python
import asyncio
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from enum import Enum, auto
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from io import BytesIO
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import os.path
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from shutil import rmtree
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from zipfile import ZipFile
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import aiohttp
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import urllib3
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from PyQt5.QtCore import QThread
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from constants import Constants, Database, ChecksumWhat
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from utilities import checksum_ok
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class ThreadStatus(Enum):
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OK = auto()
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NO_CONNECTION_ERR = auto()
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UNKNOWN_ERR = auto()
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BAD_DOWNLOAD_ERR = auto()
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UNDEFINED = auto()
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class _BaseDownloadThread(QThread):
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def __init__(self, parent=None):
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super().__init__(parent)
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self.status = ThreadStatus.UNDEFINED
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def __del__(self):
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self.terminate()
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self.wait()
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super().__del__()
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class DownloadThread(_BaseDownloadThread):
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def __init__(self):
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super().__init__()
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self.reason = 0
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def run(self):
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self.status = ThreadStatus.UNDEFINED
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try:
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db = urllib3.PoolManager().request('GET', Database.LINK_LOC)
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except urllib3.exceptions.MaxRetryError: # No internet connection.
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self.status = ThreadStatus.NO_CONNECTION_ERR
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return
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if db.status != 200:
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self.reason = db.reason
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self.status = ThreadStatus.BAD_DOWNLOAD_ERR
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return
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try:
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is_checksum_ok = checksum_ok(db.data, ChecksumWhat.FOLDER)
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except Exception:
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self.status = ThreadStatus.NO_CONNECTION_ERR
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return
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else:
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if not is_checksum_ok:
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self.status = ThreadStatus.BAD_DOWNLOAD_ERR
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return
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if os.path.exists(Constants.DATA_FOLDER):
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rmtree(Constants.DATA_FOLDER)
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try:
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with ZipFile(BytesIO(db.data)) as zipped:
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zipped.extractall()
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except Exception:
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self.status = ThreadStatus.UNKNOWN_ERR
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else:
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self.status = ThreadStatus.OK
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class UpadteSpaceWeatherThread(_BaseDownloadThread):
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__properties = ("xray", "prot_el", "ak_index", "sgas", "geo_storm")
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def __init__(self, space_weather_data):
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super().__init__()
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self.__space_weather_data = space_weather_data
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async def __download_resource(self, session, link):
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resp = await session.get(link)
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return await resp.read()
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async def __download_property(self, session, property_name):
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link = getattr(Constants, "FORECAST_" + property_name.upper())
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data = await self.__download_resource(session, link)
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setattr(self.__space_weather_data, property_name, str(data, 'utf-8'))
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async def __download_image(self, session, n):
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im = await self.__download_resource(session, Constants.FORECAST_IMGS[n])
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self.__space_weather_data.images[n].loadFromData(im)
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async def __download_resources(self, *links):
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session = aiohttp.ClientSession()
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try:
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t = []
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for p in self.__properties:
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t.append(
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asyncio.create_task(self.__download_property(session, p))
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)
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tot_images = range(len(Constants.FORECAST_IMGS))
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t1 = []
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for im_number in tot_images:
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t1.append(
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asyncio.create_task(self.__download_image(session, im_number))
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)
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await asyncio.gather(*t, *t1)
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except Exception:
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self.status = ThreadStatus.UNKNOWN_ERR
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else:
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self.status = ThreadStatus.OK
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finally:
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await session.close()
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def run(self):
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self.status = ThreadStatus.UNDEFINED
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asyncio.run(self.__download_resources())
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