Working

master-bot/tiss.py

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+import requests
+
+from urllib.parse import urlparse, parse_qs
+import re
+
+from bs4 import BeautifulSoup, NavigableString
+import random
+
+
+session = requests.Session()
+
+session.headers.update({
+    'User-Agent': 'Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:130.0) Gecko/20100101 Firefox/130.0'
+})
+
+
+class LVA:
+    def __init__(self, id: str, name: str, ects: float, curricula: list[str], type: str):
+        self.id = id
+        self.name = name
+        self.ects = ects
+        self.curricula = curricula
+        self.type = type
+
+    def id_pretty(self):
+        # format 123123 -> 123.123
+        return f'{self.id[:3]}.{self.id[3:]}'
+
+    def __str__(self):
+        return f'{self.name} ({self.id}) - {self.ects} ECTS'
+
+    def __repr__(self):
+        return f'{self.name} ({self.id})'
+
+def get_direct_text_clean(element):
+    text = ''.join(child for child in element.children if isinstance(child, NavigableString))
+    return re.sub(r'\s+', ' ', text).strip()
+
+
+def gen_request_tokens():
+    request_token = str(random.randint(0, 999))
+    window_id = str(random.randint(0, 999))
+
+    session.cookies.set(f"dsrwid-{request_token}", window_id)
+    return (request_token, window_id)
+
+
+class TISS:
+    @staticmethod
+    def get_anonymous_tiss_link(code: str):
+        return f"https://tiss.tuwien.ac.at/course/courseDetails.xhtml?courseNr={code}"
+
+    @staticmethod
+    def get_lva(code: str):
+        tokens = gen_request_tokens()
+
+        res = session.get(f"https://tiss.tuwien.ac.at/course/courseDetails.xhtml?courseNr={code}&dsrid={tokens[0]}&dswid={tokens[1]}")
+        soup = BeautifulSoup(res.text, 'html.parser')
+
+        course_name = get_direct_text_clean(soup.select('#contentInner > h1')[0])
+        
+        subheader = soup.select('#subHeader')[0].text
+        ects = float(re.search(r'(\d+\.\d+)EC', subheader).group(1))
+        # extract "VU" from "2024W, VU, 2.0h, 3.0EC"
+        type = subheader.split(",")[1].strip()
+
+        
+        table = soup.select('th[aria-label="Studienkennzahl"]')[0].parent.parent.parent
+        curricula = [re.sub("\D", "", tr.find("td").text) for tr in table.find("tbody").find_all("tr")]
+
+        lva = LVA(code, course_name, ects, curricula, type)
+
+        return lva
+    
+
+    @staticmethod
+    def get_code_from_any(any: str):
+        # Example: https://tiss.tuwien.ac.at/course/courseDetails.xhtml?dswid=5304&dsrid=381&courseNr=180771&semester=2024W
+        any = any.strip()
+        url = urlparse(any)
+
+        if all([url.scheme, url.netloc]):
+            # Yes, this was an URL
+            params = parse_qs(url.query)
+
+            course_nr = params.get('courseNr', [None])[0]
+            return course_nr
+        else:
+            if len(any) == 6:
+                return any
+
+            match = re.search(r'\w{3}\.\w{3}', any)
+
+            if match:
+                return match.group(0).replace(".", "")
+            else:
+                return None
+