update to match new pdf viewer which uses shadow root instead of nested

iframe.

README.md

@@ -1,5 +1,7 @@
 ## Blackboard marks downloader (UWA)
 
+NOTE: _Who gives a shit about marks? I don't think I am as much of a tryhard as when I first made this script. Either way I'm still patching this when the crappy code breaks at the end of each semester..._
+
 ---
 
 **Dependencies**:

constants/constants.py

@@ -6,6 +6,6 @@ BASE_URL = "https://lms.uwa.edu.au"  # Include protocol.
 DL_DIR = os.getcwd() + os.path.sep + "tmp" + os.path.sep
 Path(DL_DIR).mkdir(parents=True, exist_ok=True)
 
-SAVE_DIR = "grades"
+SAVE_DIR = "grades_2024-07-23_B"
 
 URL_LIST = SAVE_DIR + os.path.sep + "URLS.txt"

main.py

@@ -1,5 +1,6 @@
 #!/usr/bin/env python3
 
+import time
 from selenium.webdriver.remote.webdriver import WebDriver
 from typing import cast
 import requests
@@ -8,6 +9,7 @@ from selenium.webdriver.support import expected_conditions as EC
 from selenium.webdriver.support.wait import WebDriverWait
 from selenium.webdriver.common.by import By
 from selenium.webdriver.common.action_chains import ActionChains
+from selenium.common.exceptions import ElementClickInterceptedException
 # For chrome stuff
 from selenium.webdriver.common.desired_capabilities import DesiredCapabilities
 from selenium.webdriver.chrome.options import Options
@@ -97,15 +99,26 @@ def scrape_further(driver: WebDriver, path, session):
         # cant be arsed to figure out how the pspdfkit js that executes this download works.
         SwitchToIFrame(
             driver, (By.XPATH, "//iframe[@class='docviewer_iframe_embed']"))
-        SwitchToIFrame(driver, (By.XPATH, "//iframe[@title='PSPDFKit']"))
+        # New version does not have nested iframe and uses a shadowroot instead...
+        # SwitchToIFrame(driver, (By.XPATH, "//iframe[@title='PSPDFKit']"))
         get_feedback = True
-    except Exception:
+    except: pass
-        print("No feedback to download")
+
     if get_feedback:
-        dl_button = WaitClickable(
+        # dl_button = WaitClickable(driver, (By.XPATH, "//button[contains(@class,'PSPDFKit-Toolbar-Button PSPDFKit-Tool-Button')][@title='Download']"))
-            driver, (By.XPATH, "//button[contains(@class,'PSPDFKit-Toolbar-Button PSPDFKit-Tool-Button')][@title='Download']"))
+        # New version does not have nested iframe and uses a shadowroot instead...
+        # Loop since it takes a while for the iframe to load...
+        while True:
+            try:
+                dl_button = driver.execute_script("return arguments[0].shadowRoot.querySelector(\"button[title='Download']\")", driver.find_element(By.XPATH, "//div[@class='PSPDFKit-Container']"))
                 dl_button.click()
+                break
+            except:
+                time.sleep(1)
         download_file(path)
+        print("[INFO]: Downloaded feedback")
+    else:
+        print("\x1b[1;31m[WARNING]\x1b\x1b[0m: No feedback to download")
     request_stack.download_all()
 # end of scrape_further
 
@@ -137,7 +150,7 @@ OPTIONS.add_argument('--disable-dev-shm-usage')
 OPTIONS.add_experimental_option("prefs", prefs)
 # OPTIONS.add_argument("--headless")
 driver = webdriver.Chrome(
-    executable_path='chromedriver.exe',
+    executable_path='chromedriver',
     desired_capabilities=CAPABILITIES,
     options=OPTIONS
 )
@@ -189,8 +202,11 @@ for i, course in enumerate(course_details):
     }
     """)
 
+    try:
         WaitClickable(driver, (By.XPATH, "//a[@value='A']")).click()
         WaitClickable(driver, (By.XPATH, "//a[@value='A']")).click()
+    except ElementClickInterceptedException:    # already clicked on All category - do not do anything
+        pass
 
     table = driver.find_elements(By.XPATH, "//div[@id='grades_wrapper']/div")
 

utils/asset.py

@@ -66,15 +66,15 @@ class Asset:
 
     def write_metadata(self, headers):
         metacsv = [
-            ["original_filename", self.original_filename],
+            ["original_filename", self.original_filename or "error"],
-            ["readable_filename", self.filename],
+            ["readable_filename", self.filename or "error"],
-            ["url", self.url],
+            ["url", self.url or "error"],
             ["pathhash", hashlib.md5(
-                self.url.encode()).hexdigest()],
+                self.url.encode()).hexdigest() or "error"],
-            ["etag", headers['ETag']],
+            ["etag", headers['ETag'] or "error"],
-            ["etaghash", self.etag_hash],
+            ["etaghash", self.etag_hash or "error"],
-            ["last-modified", headers["Last-Modified"]],
+            ["last-modified", headers["Last-Modified"] or "error"],
-            ["content-length", headers["Content-Length"]],
+            ["content-length", headers["Content-Length"] or "error"],
             ["age", ""],
         ]
         csvpath = self.path.joinpath("ZZZ_metadata")

utils/utils.py

@@ -49,7 +49,7 @@ def save_html(dir, filename, driver: WebDriver, page_log_file=False):
 
 def download_file(dest):
     d = Path(DL_DIR)
-    time.sleep(2)
+    time.sleep(10)   # sorry for blocking!
     downloading = True
     poll = 1.0
     while downloading:

utils/wait.py

@@ -1,6 +1,6 @@
 from selenium.webdriver.support.wait import WebDriverWait
 from selenium.webdriver.support import expected_conditions as EC
-timeout = 5
+timeout = 10
 
 
 def WaitClickable(driver, locator):