Merge pull request #4 from I-Al-Istannen/master

[TGI] Add TGi tut

PFERD/__init__.py

@@ -4,6 +4,7 @@ from .ffm import *
 from .ilias import *
 from .norbert import *
 from .tgi import *
+from .tgi_jimbo import *
 from .ti import *
 from .utils import *
 
@@ -13,6 +14,7 @@ __all__ += ffm.__all__
 __all__ += ilias.__all__
 __all__ += norbert.__all__
 __all__ += tgi.__all__
+__all__ += tgi_jimbo.__all__
 __all__ += ti.__all__
 __all__ += utils.__all__
 

PFERD/tgi_jimbo.py

@@ -0,0 +1,80 @@
+# TGI Tutorial slides
+
+import logging
+import pathlib
+import re
+import zipfile
+
+import bs4
+import requests
+
+from .organizer import Organizer
+from .utils import rename, stream_to_path, PrettyLogger
+
+__all__ = ["TGI_Tut"]
+logger = logging.getLogger(__name__)
+pretty = PrettyLogger(logger)
+
+
+class TGI_Tut:
+    CRAWL_URL = "https://tgitut.jimdo.com"
+
+    def __init__(self, base_path, year="winter2019"):
+        self.base_path = base_path
+
+        self._session = requests.Session()
+
+    def _login(self):
+        post = self._session.post(self.CRAWL_URL, data={
+            "password": "Lebkuchen", "do_login": "yes", "Submit": "Anmelden"
+        })
+
+    def synchronize(self, to_dir, transform=lambda x: x):
+        pretty.starting_synchronizer(to_dir, "TGI_Tut")
+
+        self._login()
+
+        sync_path = pathlib.Path(self.base_path, to_dir)
+        orga = Organizer(self.base_path, sync_path)
+
+        orga.clean_temp_dir()
+
+        files = self._crawl()
+        self._download(orga, files, transform)
+
+        orga.clean_sync_dir()
+        orga.clean_temp_dir()
+
+    def _crawl(self):
+        url = self.CRAWL_URL
+        r = self._session.get(url)
+
+        text = r.text
+        soup = bs4.BeautifulSoup(text, "html.parser")
+        files = []
+
+        for found in soup.select("a.cc-m-download-link"):
+            url = found["href"]
+            full_url = self.CRAWL_URL + url
+
+            filename = re.search(r"/app/download/\d+/(.*.pdf)", url).group(1)
+            path = pathlib.PurePath(filename)
+
+            logger.debug(f"Found file {filename} at {full_url}")
+            files.append((path, full_url))
+
+        return files
+
+    def _download(self, orga, files, transform):
+        for path, url in sorted(files):
+            logger.debug(f"Downloading {path}")
+
+            new_path = transform(path)
+            if new_path is not None:
+                temp_file = orga.temp_file()
+                self._download_file(url, temp_file)
+                orga.add_file(temp_file, new_path)
+
+    def _download_file(self, url, to_path):
+        with self._session.get(url, stream=True) as r:
+            stream_to_path(r, to_path)