commit cc4f46abbd703efc4b8ba04065075ec52214a08a
Author: sockenklaus <sockenklaus@gmail.com>
Date:   Sun Dec 10 21:41:47 2023 +0100

    initial commit

diff --git a/.gitignore b/.gitignore
new file mode 100644
index 0000000..a37273b
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1 @@
+files/
diff --git a/parser.py b/parser.py
new file mode 100644
index 0000000..8882534
--- /dev/null
+++ b/parser.py
@@ -0,0 +1,205 @@
+#!/usr/bin/env python3
+
+from distutils.debug import DEBUG
+import json, os, smtplib, ssl, logging
+from openpyxl.cell.read_only import ReadOnlyCell
+from pyvirtualdisplay import Display
+from selenium import webdriver
+from selenium.webdriver.support.ui import WebDriverWait
+from selenium.webdriver.common.by import By
+from selenium.webdriver.support import expected_conditions as EC
+from datetime import datetime
+from openpyxl import load_workbook
+from email.message import EmailMessage
+import time
+import sys
+
+def load_settings():
+    with open('settings.json') as file:
+        return json.load(file)
+
+def fetch_via_browser(newfile):
+    disp = Display(backend="xvfb", size=(800,600))
+    disp.start()
+
+
+    options = webdriver.ChromeOptions()
+    prefs = {
+        "download.default_directory" : set['files'],
+        "profile.default_content_settings.popups" : 0,
+    }
+    logging.info(prefs)
+    options.add_experimental_option("prefs", prefs)
+    options.add_argument("--headless=new")
+    browser = webdriver.Chrome(options=options)
+    wait = WebDriverWait(browser, 10)
+
+    
+    browser.get(set['oo_url'])
+
+    iframe = wait.until(
+        EC.element_to_be_clickable((By.TAG_NAME, 'iframe'))
+    )
+    browser.switch_to.frame(iframe)
+
+    btn_file = wait.until(
+        EC.element_to_be_clickable((By.XPATH, "//a[@data-tab='file']"))
+    )
+    wait.until(
+        EC.invisibility_of_element_located((By.CSS_SELECTOR, 'div.asc-loadmask'))
+    )
+    btn_file.click()
+    
+    panel_saveas = wait.until(
+        EC.element_to_be_clickable((By.CSS_SELECTOR, "div#panel-saveas"))
+    )
+   
+    btn_download = wait.until(
+        EC.element_to_be_clickable((By.CSS_SELECTOR, "div.svg-format-xlsx"))
+    )
+
+    btn_download.click()
+   
+    try:
+        timeout = 0
+
+        while not os.path.exists(newfile) and timeout < 20:
+            time.sleep(1)
+            timeout += 1
+
+        if timeout == 20:
+            logging.warning("Timeout beim Dateidownload erreicht.")
+
+        browser.quit()
+        disp.stop()
+
+    except:
+        logging.error("Exception raised: ",sys.exc_info())
+
+def rotate_file(oldfile, newfile):
+    try:
+        os.remove(oldfile)
+    except Exception as e:
+        logging.error("Fehler beim Löschen")
+        if hasattr(e, 'message'):
+            logging.error(e.message)
+        else:
+            logging.error(e)
+
+    try:
+        os.rename(newfile, oldfile)
+    except Exception as e:
+        logging.error("Fehler beim Umbenennen")
+        if hasattr(e, 'message'):
+            logging.error(e.message)
+        else:
+            logging.error(e)
+    
+def compare_files(oldfile, newfile):
+    results = []
+
+    if os.path.exists(oldfile) and os.path.exists(newfile):
+        new_wb = load_workbook(filename=newfile, read_only=True)
+
+        old_wb = load_workbook(filename=oldfile, read_only=True)
+
+        new_sheet = new_wb['BewerberInnen']
+        old_sheet = old_wb['BewerberInnen']
+
+        old_sheet.calculate_dimension(force=True)
+        new_sheet.calculate_dimension(force=True)
+
+        logging.debug(f'Old-Sheet-Dimensions (mincol/maxcol:minrow/maxrow): {old_sheet.min_column}/{old_sheet.max_column}:{old_sheet.min_row}/{old_sheet.max_row}')
+        logging.debug(f'New-Sheet-Dimensions (mincol/maxcolminrow/maxrow): {new_sheet.min_column}/{new_sheet.max_column}:{new_sheet.min_row}/{new_sheet.max_row}')
+
+        global_min_row = min(old_sheet.min_row, new_sheet.min_row)
+        global_max_row = max(set.get('max_row', old_sheet.max_row), set.get('max_row', new_sheet.max_row))
+        global_min_col = min(old_sheet.min_column, new_sheet.min_column)
+        global_max_col = max(set.get('max_col', old_sheet.max_column), set.get('max_col', new_sheet.max_column))
+
+        for row in range(global_min_row, global_max_row + 1):
+            for col in range(global_min_col, global_max_col + 1):
+                new_cell = new_sheet.cell(row=row, column=col)
+                old_cell = old_sheet.cell(row=row, column=col)
+                    
+                logging.debug(f'Performance Check, Cell: {col}:{row}')
+
+                if new_cell.value != old_cell.value:
+                    if type(new_cell) is ReadOnlyCell:
+                        coord = new_cell.coordinate                 
+                    elif type(old_cell) is ReadOnlyCell:
+                        coord = old_cell.coordinate
+                    else:
+                        coord = f'{col}/{row}'
+                    message = f'Veränderung in Zelle {coord}: {old_cell.value} ==> {new_cell.value}'
+                    logging.info(message)
+                    results.append(message)
+        new_wb.close()
+        old_wb.close()
+                
+        if not results:
+            logging.info("Keine Änderungen gefunden.")
+        else:
+            send_email(results, set['email_recipient'])
+    
+    else: 
+        logging.warning('Kann Dateien nicht vergleichen, Dateien nicht vorhanden?')
+            
+def send_email(results, recipient):
+
+    msg = EmailMessage()
+    
+    msg['Subject'] = 'ISB-Vermittlung Watchdog'
+    msg['From'] = set['smtp_user']
+    msg['To'] = recipient
+    msg.set_type('text/html')
+
+    msg.set_content('\r\n'.join(results))
+
+    html_msg = f"""\
+        <html>
+            <body>
+                <a href="{set['oo_url']}">Zur Vermittlungsliste des DW</a>
+                <br />
+                <br />
+                {'<br />'.join(results)}
+            </body>
+        </html>
+    """
+    msg.add_alternative(html_msg, subtype="html")
+
+    context = ssl.create_default_context()
+    with smtplib.SMTP(set['smtp_server'], set['smtp_port']) as server:
+        server.starttls(context=context)
+        server.login(set['smtp_user'], set['smtp_password'])
+        server.send_message(msg)
+        server.quit()
+
+def main():
+    args = sys.argv[1:]
+
+    oldfile = os.path.join(set['files'], 'vermittlung-old.xlsx')
+    newfile = os.path.join(set['files'], 'ISB Vermittlung.xlsx')
+    
+    if len(args) == 1 and args[0] == '-t':
+        send_email("test", "marc-pascal.koenig@outlook.de")
+
+    if len(args) == 1 and args[0] == '-c':
+        compare_files(oldfile, newfile)
+
+    else:
+        rotate_file(oldfile, newfile)
+
+        fetch_via_browser(newfile)
+
+        compare_files(oldfile, newfile)
+
+set = load_settings()
+logging.basicConfig(
+    level=set['loglevel'],
+    format='[%(asctime)s] %(levelname)s: %(message)s',
+    filename=set['logfile']
+)
+
+if __name__ == '__main__':
+    main()
diff --git a/settings.json b/settings.json
new file mode 100644
index 0000000..45e7cc1
--- /dev/null
+++ b/settings.json
@@ -0,0 +1,15 @@
+{
+    "oo_url": "https://cloud.diakonie-hamburg.de/index.php/apps/onlyoffice/s/EnjlEAC3pBX1gZn?fileId=5267",
+    "logfile": "/var/log/dw-parser/dw-parser.log",
+    "files": "/home/socrates/dw-parser/files/",
+    "loglevel": "WARNING",
+
+    "smtp_server": "smtp.gmail.com",
+    "smtp_port": "587",
+    "smtp_password": "gkrybqzhzkkggbrh",
+    "smtp_user": "sockenklaus@gmail.com",
+    "email_recipient": "behr@bodelschwingh.com, koenig@bodelschwingh.com",
+
+    "max_col": 100,
+    "__max_row": 25
+}