added readme.md

.gitignore

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README.md

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-# library-reminder
-

main.py

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+import tempfile
+
+from selenium import webdriver
+from selenium.webdriver.chrome.options import Options
+from selenium.webdriver.common.by import By
+from selenium.webdriver.support.ui import WebDriverWait
+from selenium.webdriver.support import expected_conditions as EC
+from datetime import datetime, timedelta
+from email.mime.text import MIMEText
+from email.mime.multipart import MIMEMultipart
+import smtplib
+import time
+from dotenv import load_dotenv
+import os
+import json
+
+
+# Load environment variables from .env file
+load_dotenv()
+
+# Email Configuration from environment variables
+SMTP_SERVER = os.getenv("SMTP_SERVER")
+SMTP_PORT = int(os.getenv("SMTP_PORT"))
+EMAIL_ADDRESS = os.getenv("EMAIL_ADDRESS")
+EMAIL_PASSWORD = os.getenv("EMAIL_PASSWORD")
+
+DAYS_BEFORE = int(os.getenv("DAYS_BEFORE"))
+
+def check_date(due_date, recipient_email):
+    today = datetime.now()
+    if today <= due_date <= today + timedelta(days=DAYS_BEFORE):
+        print(f"Reminder: Book is due on {due_date}")
+
+        # Send an email reminder
+        subject = "Stadtbibliothek Radebeul - Buch bald fällig"
+        body = f"Ein Buch muss am {due_date.strftime('%d.%m.%Y')} zurückgegeben werden. Bitte zurückgeben um Gebühren zu vermeiden."
+
+        # Set up email
+        msg = MIMEMultipart()
+        msg['From'] = EMAIL_ADDRESS
+        msg['To'] = recipient_email
+        msg['Subject'] = subject
+        msg.attach(MIMEText(body, 'plain'))
+
+        # Connect to SMTP server and send email
+        with smtplib.SMTP(SMTP_SERVER, SMTP_PORT) as server:
+            server.starttls()  # Secure the connection
+            server.login(EMAIL_ADDRESS, EMAIL_PASSWORD)
+            server.send_message(msg)
+        print(f"Email sent to {recipient_email}")
+
+def check_books(user, pw, recipient_email):
+    options = Options()
+    options.add_argument("--headless")  # Run Chrome in headless mode
+    options.add_argument("--disable-gpu")  # Disable GPU acceleration
+    options.add_argument("--no-sandbox")  # Required for some environments
+    options.add_argument("--incognito")
+    # Use a unique temporary user-data-dir
+    temp_dir = tempfile.mkdtemp()
+    options.add_argument(f"--user-data-dir={temp_dir}")
+
+    driver = webdriver.Chrome(options=options)  # Use ChromeDriver
+
+    try:
+        # Navigate to the login page
+        driver.get("https://webserver.sv-radebeul.de/Mediensuche-Konto/Mein-Konto")
+
+        # Wait for the page to load
+        wait = WebDriverWait(driver, 10)
+
+        # Locate username and password fields
+        username_field = driver.find_element(By.ID, "dnn_ctr355_Login_Login_COP_txtUsername")
+        password_field = driver.find_element(By.ID, "dnn_ctr355_Login_Login_COP_txtPassword")
+
+        # Enter login credentials
+        username_field.send_keys(user)
+        password_field.send_keys(pw)
+
+        # Click login button
+        login_button = driver.find_element(By.ID, "dnn_ctr355_Login_Login_COP_cmdLogin")
+        login_button.click()
+
+        # Wait for login to complete
+        time.sleep(5)
+
+        # Check if login was successful
+        if "Mein Konto" in driver.page_source:
+            print(f"Login successful for {user}!")
+            # Locate the table containing the rows
+            table = driver.find_element(By.ID, "dnn_ctr423_MainView_tpnlLoans_ucLoansView_grdViewLoans")
+            table_rows = table.find_elements(By.XPATH, "./tbody/tr")
+
+            # Loop through each row and extract the "Aktuelle Frist" date
+            for row in table_rows:
+                try:
+                    # Locate the "Aktuelle Frist" column in the current row
+                    due_date = row.find_element(By.XPATH, ".//td[span[contains(text(), 'Aktuelle Frist:')]]/span[2]")
+                    print(f"Aktuelle Frist for {user}: {due_date.text}")
+                    check_date(datetime.strptime(due_date.text, "%d.%m.%Y"), recipient_email)
+                except Exception as e:
+                    print(f"Could not extract 'Aktuelle Frist' date for a row: {e}")
+        else:
+            print(f"Login failed for {user}. Please check the credentials or the page structure.")
+    finally:
+        # Close the browser
+        driver.quit()
+
+if __name__ == '__main__':
+    # Load user credentials from JSON file
+    with open("./users.json", "r") as file:
+        users = json.load(file)
+
+    # Iterate over all users
+    for user_data in users:
+        username = user_data["username"]
+        password = user_data["password"]
+        recipient_email = user_data["recipient_email"]
+        check_books(username, password, recipient_email)

readme.md

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+# Lend Expire Notification
+...for Stadtbibliothek Radebeul
+
+## About
+This script checks the current lends of the user. If a lend is about to expire it sends an e-mail notification. 
+
+To get the Information the script simulates a user. It does a login to the OPAC System of the Stadtbibliothek Radebeul and extracts the information from the website. 
+To archive this, it utiles using selenium.
+
+Each run will trigger one e-mail, so trigger or run in the desired frequency. 
+
+## Getting Stared
+
+1. Check out the repo
+2. Add username, password and email address in the users.json file
+3. create a ".env" file or past the following configurations varabiles into the environment varabiles
+
+## Enviornment Varables
+
+```
+SMTP_SERVER=mail.server.com
+SMTP_PORT=587
+EMAIL_ADDRESS=sender-mail
+EMAIL_PASSWORD=password
+DAYS_BEFORE=3
+```
+
+## users.json
+```
+[
+    {
+        "username": "username",
+        "password": "password",
+        "recipient_email": "notification_mail"
+    }
+]
+```

requirements.txt

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+python-dotenv==1.0.1
+selenium==4.27.1

users.json

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+[
+    {
+        "username": "USER",
+        "password": "PWD",
+        "recipient_email": "info@familie-frank.email"
+    }
+]