From d404c758dbe0ad0cbde48d8562b207e915bf3314 Mon Sep 17 00:00:00 2001
From: David Rotermund <54365609+davrot@users.noreply.github.com>
Date: Fri, 1 Sep 2023 10:11:47 +0200
Subject: [PATCH] Add files via upload

---
 analyse_csv.py   | 356 +++++++++++++++++++++++++++++++++++++++++++++++
 create_logger.py |  35 +++++
 2 files changed, 391 insertions(+)
 create mode 100644 analyse_csv.py
 create mode 100644 create_logger.py

diff --git a/analyse_csv.py b/analyse_csv.py
new file mode 100644
index 0000000..aa0a24b
--- /dev/null
+++ b/analyse_csv.py
@@ -0,0 +1,356 @@
+import glob
+import pandas as pd
+import caldav
+import datetime
+from dateutil.relativedelta import relativedelta  # type: ignore
+import pytz  # type: ignore
+import create_logger
+
+from selenium import webdriver
+from selenium.webdriver.firefox.service import Service as FirefoxService
+from webdriver_manager.firefox import GeckoDriverManager
+from selenium.webdriver.common.by import By
+import time
+import os
+from pathlib import Path
+
+
+def login(
+    driver: webdriver.firefox.webdriver.WebDriver,
+    base_url: str,
+    zfn_user: str,
+    zfn_password: str,
+    logger,
+) -> bool:
+    assert len(base_url) > 0
+    assert len(zfn_user) > 0
+    assert len(zfn_password) > 0
+
+    login_url: str = base_url
+
+    # Login
+    driver.get(login_url)
+    print_new_line: bool = False
+    while driver.current_url != login_url:
+        logger.info(".")
+        time.sleep(1)
+        print_new_line = True
+
+    if print_new_line is True:
+        logger.info("")
+
+    login_name_list = driver.find_elements(By.ID, "loginname")
+    login_password_list = driver.find_elements(By.ID, "password")
+    login_button_list = driver.find_elements(By.NAME, "Login")
+
+    if (
+        (len(login_name_list) != 1)
+        and (len(login_password_list) != 1)
+        and (len(login_button_list) != 1)
+    ):
+        return False
+
+    login_name = login_name_list[0]
+    login_password = login_password_list[0]
+    login_button = login_button_list[0]
+
+    while (login_name.get_attribute("value") != zfn_user) or (
+        login_password.get_attribute("value") != zfn_password
+    ):
+        login_name.clear()
+        login_password.clear()
+        login_name.send_keys(zfn_user)
+        login_password.send_keys(zfn_password)
+        time.sleep(1)
+
+    login_button.click()
+    while driver.current_url == login_url:
+        print(".", end="")
+        time.sleep(1)
+        print_new_line = True
+
+    if print_new_line is True:
+        print()
+
+    return str(driver.current_url).startswith(
+        "https://elearning.uni-bremen.de/dispatch.php/start"
+    )
+
+
+def download(
+    path: str,
+    login_url: str,
+    zfn_user: str,
+    zfn_password: str,
+    logger,
+    link_room_id: str,
+) -> None:
+    os.makedirs(path, exist_ok=True)
+    for file in glob.glob(os.path.join(path, "*.csv")):
+        os.remove(file)
+
+    options = webdriver.FirefoxOptions()
+    options.set_preference("browser.download.folderList", 2)  # custom location
+    options.set_preference("browser.download.manager.showWhenStarting", False)
+    options.set_preference("browser.download.dir", path)
+    options.set_preference("browser.helperApps.neverAsk.saveToDisk", "text/csv")
+    options.add_argument("-headless")
+
+    driver = webdriver.Firefox(
+        options=options, service=FirefoxService(GeckoDriverManager().install())
+    )
+
+    result: bool = login(
+        driver=driver,
+        base_url=login_url,
+        zfn_user=zfn_user,
+        zfn_password=zfn_password,
+        logger=logger,
+    )
+
+    assert result
+
+    todo_url: str = (
+        str(
+            "https://elearning.uni-bremen.de/dispatch.php/resources/export/resource_bookings/"
+        )
+        + link_room_id
+    )
+    driver.get(todo_url)
+
+    print_new_line: bool = False
+    while driver.current_url != todo_url:
+        print(".", end="")
+        time.sleep(1)
+        print_new_line = True
+
+    if print_new_line is True:
+        print()
+
+    end_date_list = driver.find_elements(By.NAME, "end_date")
+    export_button_list = driver.find_elements(By.NAME, "export")
+    assert len(end_date_list) == 1
+    assert len(export_button_list) == 1
+
+    end_date = end_date_list[0]
+    export_button = export_button_list[0]
+
+    # Get the date and increase it by 2 years
+    date_to_modify = end_date.get_attribute("value")
+
+    date_to_modify_dt: datetime.datetime = datetime.datetime.strptime(
+        str(date_to_modify), "%d.%m.%Y"
+    )
+    date_to_modify_dt = date_to_modify_dt + relativedelta(years=2)
+
+    date_to_modify = date_to_modify_dt.strftime("%d.%m.%Y")
+
+    end_date.clear()
+    end_date.send_keys(date_to_modify)
+
+    found_element_list = driver.find_elements(By.TAG_NAME, "button")
+    close_button_class: str = (
+        "ui-datepicker-close ui-state-default ui-priority-primary ui-corner-all"
+    )
+    for id in range(0, len(found_element_list)):
+        if str(found_element_list[id].get_dom_attribute("class")).startswith(
+            close_button_class
+        ):
+            found_element_list[id].click()
+            time.sleep(1)
+            break
+
+    export_button.click()
+
+    time.sleep(10)
+    driver.close()
+    driver.quit()
+
+
+def process(
+    path: str,
+    time_start: datetime.datetime,
+    time_end: datetime.datetime,
+    nextcloud_url: str,
+    nextcloud_app_user: str,
+    nextcloud_app_password: str,
+    studip_room_name: str,
+    studip_start: str,
+    studip_end: str,
+    studip_description: str,
+    studip_person: str,
+    logger,
+) -> None:
+    files = glob.glob(os.path.join(path, "*.csv"))
+
+    if len(files) == 0:
+        exit(0)
+
+    with caldav.DAVClient(
+        url=nextcloud_url, username=nextcloud_app_user, password=nextcloud_app_password
+    ) as client:
+        my_principal = client.principal()
+        calendars = my_principal.calendars()
+
+        assert len(calendars) > 0
+
+        for filename in files:
+            df = pd.read_csv(filename, sep=";", header=0)
+            csv_room_namelist = df[studip_room_name].unique()
+
+            # The file should only contain one room
+            assert len(csv_room_namelist) == 1
+            csv_room_name: str = str(csv_room_namelist[0])
+
+            logger.info(f"Processing room: {csv_room_name}")
+
+            calender_caldav_object = None
+            for id in range(0, len(calendars)):
+                if str(calendars[id]).endswith(csv_room_name):
+                    calender_caldav_object = calendars[id]
+                    break
+
+            assert calender_caldav_object is not None
+
+            all_events = calender_caldav_object.search(
+                start=time_start,
+                end=time_end,
+                event=True,
+            )
+
+            for event_selection in all_events:
+                event_summary = str(
+                    event_selection.vobject_instance.vevent.summary.value
+                )
+                event_dtstart = event_selection.icalendar_component.get(
+                    "dtstart"
+                ).dt.strftime("%d.%m.%Y %H:%M")
+                event_dtend = event_selection.icalendar_component.get(
+                    "dtend"
+                ).dt.strftime("%d.%m.%Y %H:%M")
+
+                temp_df = df[
+                    (df[studip_start] == event_dtstart)
+                    * (df[studip_end] == event_dtend)
+                ]
+
+                assert len(temp_df) >= 0
+                assert len(temp_df) <= 1
+
+                # This event needs to be deleted...
+                # because it isn't in the studip list anymore
+                if len(temp_df) == 0:
+                    event_selection.delete()
+                    logger.info("Event deleted from NextCloud")
+                # Remove the existing correct dates from the panda data frame
+                else:
+                    temp_summary: str = f"{temp_df[studip_description].iloc[0]} ({temp_df[studip_person].iloc[0]})"
+                    if event_summary != temp_summary:
+                        logger.info("Need to update summary!!!")
+                        event_selection.vobject_instance.vevent.summary.value = (
+                            temp_summary
+                        )
+                        event_selection.save()
+
+                    df.drop(inplace=True, index=int(temp_df.iloc[0].name))
+
+            # Add the remaining list of events
+            for id in range(0, len(df)):
+                dtstart: datetime.datetime = datetime.datetime.strptime(
+                    str(df[studip_start].iloc[id]), "%d.%m.%Y %H:%M"
+                )
+                dtstart = dtstart.replace(tzinfo=pytz.timezone("Europe/Berlin"))
+                dtend: datetime.datetime = datetime.datetime.strptime(
+                    str(df[studip_end].iloc[id]), "%d.%m.%Y %H:%M"
+                )
+                dtend = dtend.replace(tzinfo=pytz.timezone("Europe/Berlin"))
+
+                summary: str = (
+                    f"{df[studip_description].iloc[id]} ({df[studip_person].iloc[id]})"
+                )
+
+                _ = calender_caldav_object.save_event(
+                    dtstart=dtstart, dtend=dtend, summary=summary, tzid="Europe/Berlin"
+                )
+
+                logger.info(f"Adding ({id} / {len(df)-1}): {dtstart} {dtend} {summary}")
+
+
+# #############################################
+# Parameter:
+# #############################################
+
+# Time slice: from today until + 2 years
+time_start: datetime.datetime = datetime.datetime.now()
+time_start = time_start.replace(hour=0, minute=0)
+time_end: datetime.datetime = time_start + relativedelta(years=2)
+
+# StudIP
+login_url: str = "https://elearning.uni-bremen.de/index.php?again=yes"
+# TODO: Change zfn username for studip
+zfn_user: str = "XXXXX"
+# TODO: Change zfn password for studip
+zfn_password: str = "XXXXX"
+
+# Nextcloud
+nextcloud_url: str = "https://nc.uni-bremen.de/remote.php/dav"
+# TODO: Change nextcloud application username
+nextcloud_app_user: str = "XXXXX@uni-bremen.de"
+# TODO: Change nextcloud application passwort
+nextcloud_app_password: str = "XXXXX-XXXXX-XXXXX-XXXXX-XXXXX"
+
+# Stud IP CSV parameters
+studip_room_name: str = "Raumname"
+studip_start: str = "Beginn"
+studip_end: str = "Ende"
+studip_description: str = "Beschreibung"
+studip_person: str = "Belegende Person(en)"
+
+# To prevent download dialog
+path: str = "/tmp/studip"
+
+# TODO: Change room list using the IDs from StudIP
+link_room_id_list: list[str] = [
+    "r0000000000000000000000000018077",  # Cog 0320
+    "342f7053793665a151872ae455943e1a",  # Cog 1370
+    "r0000000000000000000000000018047",  # Cog 1030
+    "r0000000000000000000000000018048",  # Cog 2030
+]
+
+# TODO: Change working directory
+working_dir: str = "/0/Service/nextcloud_cal"
+
+logger = create_logger.create_logger(
+    save_logging_messages=True,
+    display_logging_messages=True,
+)
+
+for link_room_id in link_room_id_list:
+    logger.info(link_room_id)
+
+    download(
+        path=path,
+        login_url=login_url,
+        zfn_user=zfn_user,
+        zfn_password=zfn_password,
+        logger=logger,
+        link_room_id=link_room_id,
+    )
+    logger.info("Download done")
+    process(
+        path=path,
+        time_start=time_start,
+        time_end=time_end,
+        nextcloud_url=nextcloud_url,
+        nextcloud_app_user=nextcloud_app_user,
+        nextcloud_app_password=nextcloud_app_password,
+        studip_room_name=studip_room_name,
+        studip_start=studip_start,
+        studip_end=studip_end,
+        studip_description=studip_description,
+        studip_person=studip_person,
+        logger=logger,
+    )
+    logger.info("Processing done")
+
+Path(os.path.join(working_dir, "DONE")).touch()
diff --git a/create_logger.py b/create_logger.py
new file mode 100644
index 0000000..cf0d9ad
--- /dev/null
+++ b/create_logger.py
@@ -0,0 +1,35 @@
+import logging
+import datetime
+import os
+
+
+def create_logger(save_logging_messages: bool, display_logging_messages: bool):
+    now = datetime.datetime.now()
+    dt_string_filename = now.strftime("%Y_%m_%d_%H_%M_%S")
+
+    logger = logging.getLogger("MyLittleLogger")
+    logger.setLevel(logging.DEBUG)
+
+    if save_logging_messages:
+        time_format = "%b %-d %Y %H:%M:%S"
+        logformat = "%(asctime)s %(message)s"
+        file_formatter = logging.Formatter(fmt=logformat, datefmt=time_format)
+        os.makedirs("logs", exist_ok=True)
+        file_handler = logging.FileHandler(
+            os.path.join("logs", f"log_{dt_string_filename}.txt")
+        )
+        file_handler.setLevel(logging.INFO)
+        file_handler.setFormatter(file_formatter)
+        logger.addHandler(file_handler)
+
+    if display_logging_messages:
+        time_format = "%H:%M:%S"
+        logformat = "%(asctime)s %(message)s"
+        stream_formatter = logging.Formatter(fmt=logformat, datefmt=time_format)
+
+        stream_handler = logging.StreamHandler()
+        stream_handler.setLevel(logging.INFO)
+        stream_handler.setFormatter(stream_formatter)
+        logger.addHandler(stream_handler)
+
+    return logger