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Add transfer scraper
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powe97
parent
db033af56e
commit
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321
transfer_scraper/main.py
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321
transfer_scraper/main.py
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import json
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import html
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import sys
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import re
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import os.path
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import traceback
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from time import sleep
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import random
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from signal import alarm, SIGALRM, signal
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from fake_useragent import UserAgent
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from selenium import webdriver
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from selenium.webdriver.common.by import By
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from selenium.webdriver.support.ui import WebDriverWait
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from selenium.webdriver.support import expected_conditions as EC
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from selenium.common.exceptions import StaleElementReferenceException
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from selenium.common.exceptions import TimeoutException
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from selenium.common.exceptions import NoSuchElementException
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def raise_(ex):
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raise ex
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def normalize_class_name(input):
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text = list(input)
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for i in range(1, len(text)):
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if (text[i - 1] == " ") or (text[i - 1] == text[i] == "I"):
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continue
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text[i] = text[i].lower()
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return "".join(text)
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def wait(ec):
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WebDriverWait(
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driver, 20, ignored_exceptions=[StaleElementReferenceException]
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).until(ec)
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sleep(random.uniform(400, 1900) / 1000)
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def scrape_course_card(html_id, i, note):
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trs = (
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driver.find_element("id", html_id)
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.find_elements(By.CSS_SELECTOR, ".course-detail")[i]
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.find_elements(By.TAG_NAME, "tr")
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)
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course_name_and_id = trs[0].text.split()
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course_desc = ""
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if trs[1].find_element(By.TAG_NAME, "td").get_attribute("colspan") == "2":
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course_desc = trs[1].text
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course_department = (
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next((x for x in trs if x.text.strip().startswith("Department:")))
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.find_elements(By.TAG_NAME, "td")[1]
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.text.title()
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)
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course_catalog = (
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next((x for x in trs if x.text.strip().startswith("Source catalog:")))
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.find_elements(By.TAG_NAME, "td")[1]
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.text
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)
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try:
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k = 1 + next(
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i for i, v in enumerate(course_name_and_id) if bool(re.search(r"\d", v))
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)
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course_id = " ".join(course_name_and_id[0:k])
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course_name = normalize_class_name(" ".join(course_name_and_id[k:]))
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except StopIteration: # Handling for Not Transferrable
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course_id = course_name_and_id[0]
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course_name = normalize_class_name(" ".join(course_name_and_id[1:]))
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if not note:
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try:
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course_credits = (
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next((x for x in trs if x.text.strip().startswith("Units:")))
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.find_elements(By.TAG_NAME, "td")[1]
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.text.strip()
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)
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except:
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course_credits = ""
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return {
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"id": course_id,
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"name": course_name,
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"credits": course_credits,
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"desc": course_desc,
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"department": course_department,
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"catalog": course_catalog,
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}
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else:
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course_note = driver.find_element("id", "lblCommentsPublic").text.strip()
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return {
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"id": course_id,
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"name": course_name,
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"note": course_note,
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"desc": course_desc,
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"department": course_department,
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"catalog": course_catalog,
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}
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if len(sys.argv) != 3:
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print(f"USAGE: python {sys.argv[0]} <transfer file> <state file>")
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exit(1)
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transfer_json_path = sys.argv[1]
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state_json_path = sys.argv[2]
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options = webdriver.FirefoxOptions()
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user_agent = UserAgent().random
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print(f"Using randomized user agent {user_agent}", file=sys.stderr)
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if sys.argv[-1] != "gui":
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options.add_argument("--headless")
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options.set_preference("general.useragent.override", user_agent)
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driver = webdriver.Firefox(options=options)
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driver.get(
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"https://tes.collegesource.com/publicview/TES_publicview01.aspx?rid=f080a477-bff8-46df-a5b2-25e9affdd4ed&aid=27b576bb-cd07-4e57-84d0-37475fde70ce"
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)
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num_pages = int(
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driver.find_element("id", "lblInstWithEQPaginationInfo").text.split()[-1]
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)
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print(f"{num_pages} pages detected", file=sys.stderr)
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state = {"inst_pg": 1, "inst_idx": 0, "course_pg": 1, "course_idx": 0}
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institutions = {}
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if os.path.isfile(state_json_path):
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with open(state_json_path, "r") as statejson:
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state = json.load(statejson)
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if os.path.isfile(transfer_json_path):
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with open(transfer_json_path, "r") as transferjson:
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institutions = json.load(transferjson)
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print("Loaded state: ", end="", file=sys.stderr)
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json.dump(state, sys.stderr, indent=4)
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print("", file=sys.stderr)
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# Set up 2hr timeout so that the GH action does not run forever, pretend it's ^C
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signal(SIGALRM, lambda a, b: raise_(KeyboardInterrupt))
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alarm(60 * 60 * 2)
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try:
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curr_page = 1
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while state["inst_pg"] <= num_pages:
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page = driver.find_element("id", f"gdvInstWithEQ")
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if state["inst_pg"] != 1:
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while curr_page != state["inst_pg"]:
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print(f"Jumping to institution page {curr_page}", file=sys.stderr)
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jumpable_pages = {
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int(x.get_attribute("href").split("'")[3][5:]): x
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for x in driver.find_elements(
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By.CSS_SELECTOR,
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"""a[href^="javascript:__doPostBack('gdvInstWithEQ','Page$"]""",
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)
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}
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curr_page = int(
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driver.find_element(
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"id", "lblInstWithEQPaginationInfo"
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).text.split()[-3]
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)
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if state["inst_pg"] in jumpable_pages:
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jumpable_pages[state["inst_pg"]].click()
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curr_page = state["inst_pg"]
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elif state["inst_pg"] < min(jumpable_pages):
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jumpable_pages[min(jumpable_pages)].click()
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curr_page = min(jumpable_pages)
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else:
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jumpable_pages[max(jumpable_pages)].click()
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curr_page = max(jumpable_pages)
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wait(EC.staleness_of(page))
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sleep(random.uniform(3, 6))
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page = driver.find_element("id", f"gdvInstWithEQ")
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inst_list_len = len(
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page.find_elements(
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By.CSS_SELECTOR, "a[id^=gdvInstWithEQ_btnCreditFromInstName_]"
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)
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)
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while state["inst_idx"] < inst_list_len:
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institution_link = driver.find_element("id", "gdvInstWithEQ").find_elements(
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By.CSS_SELECTOR, "a[id^=gdvInstWithEQ_btnCreditFromInstName_]"
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)[state["inst_idx"]]
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fields = institution_link.find_element(By.XPATH, "../..").find_elements(
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By.CSS_SELECTOR, ".gdv_boundfield_uppercase"
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)
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inst_name = institution_link.text.title().strip()
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city = fields[0].text.title().strip()
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us_state = fields[1].text.strip()
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institution_link.click()
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wait(EC.staleness_of(institution_link))
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try:
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course_pages_len = int(
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driver.find_element(
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"id", "lblInstWithEQPaginationInfo"
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).text.split()[-1]
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)
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except NoSuchElementException:
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course_pages_len = 1
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try:
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courses = institutions[inst_name]["courses"]
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except:
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courses = []
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while state["course_pg"] <= course_pages_len:
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course_links_len = len(
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driver.find_element("id", "gdvCourseEQ").find_elements(
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By.CSS_SELECTOR, "a[id^=gdvCourseEQ_btnViewCourseEQDetail_]"
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)
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)
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while state["course_idx"] < course_links_len:
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course_link = driver.find_element(
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"id", "gdvCourseEQ"
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).find_elements(
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By.CSS_SELECTOR, "a[id^=gdvCourseEQ_btnViewCourseEQDetail_]"
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)[
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state["course_idx"]
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]
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course_link.click()
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try:
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wait(
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EC.element_to_be_clickable(
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(By.CSS_SELECTOR, ".modal-header button")
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)
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)
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transfer = [
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scrape_course_card("lblSendCourseEQDetail", i, False)
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for i in range(
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0,
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len(
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driver.find_element(
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"id", "lblSendCourseEQDetail"
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).find_elements(By.CSS_SELECTOR, ".course-detail")
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),
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)
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]
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rpi = [
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scrape_course_card("lblReceiveCourseEQDetail", i, True)
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for i in range(
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0,
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len(
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driver.find_element(
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"id", "lblReceiveCourseEQDetail"
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).find_elements(By.CSS_SELECTOR, ".course-detail")
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),
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)
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]
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print(
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f"{inst_name} ({state['inst_idx']}:{state['inst_pg']}/{num_pages}): {transfer[0]['id']} {transfer[0]['name']} -> {rpi[0]['id']} {rpi[0]['name']} ({state['course_idx']}:{state['course_pg']}/{course_pages_len})",
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file=sys.stderr,
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)
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begin_date = driver.find_element(
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"id", "lblBeginEffectiveDate"
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).text
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end_date = driver.find_element("id", "lblEndEffectiveDate").text
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driver.find_element(
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By.CSS_SELECTOR, ".modal-header button"
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).click()
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courses += [
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{
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"transfer": transfer,
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"rpi": rpi,
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"begin": begin_date,
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"end": end_date,
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}
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]
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state["course_idx"] += 1
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except Exception as e:
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institutions.update(
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{
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inst_name: {
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"city": city,
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"state": us_state,
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"courses": courses,
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}
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}
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)
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raise e
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state["course_idx"] = 0
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state["course_pg"] += 1
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institutions.update(
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{inst_name: {"city": city, "state": us_state, "courses": courses}}
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)
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state["course_pg"] = 1
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state["inst_idx"] += 1
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driver.find_element("id", "btnSwitchView").click()
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wait(
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EC.text_to_be_present_in_element(
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("id", "lblInstWithEQPaginationInfo"), str(state["inst_pg"])
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)
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)
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state["inst_idx"] = 0
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state["inst_pg"] = (state["inst_pg"] % num_pages) + 1
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except (Exception, KeyboardInterrupt) as e:
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print("Program hits exception and will save and terminate", file=sys.stderr)
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print(traceback.format_exc(), file=sys.stderr)
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print("Program will terminate with state: ", end="", file=sys.stderr)
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json.dump(state, sys.stderr, indent=4)
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print("", file=sys.stderr)
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with open(transfer_json_path, "w") as transferjson:
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json.dump(institutions, transferjson, indent=4)
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with open(state_json_path, "w") as statejson:
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json.dump(state, statejson, indent=4)
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driver.quit()
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15
transfer_scraper/requirements.txt
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15
transfer_scraper/requirements.txt
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@ -0,0 +1,15 @@
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attrs==23.2.0
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certifi==2024.2.2
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fake-useragent==1.4.0
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h11==0.14.0
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idna==3.6
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outcome==1.3.0.post0
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PySocks==1.7.1
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selenium==4.18.1
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sniffio==1.3.1
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sortedcontainers==2.4.0
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trio==0.24.0
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trio-websocket==0.11.1
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typing_extensions==4.10.0
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urllib3==2.2.1
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wsproto==1.2.0
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