Revert "use flask caching instead of reading csv again"

This reverts commit ba7a957.

contactform/app.py

@@ -10,7 +10,6 @@
 from wtforms.fields import *
 from flask_wtf import CSRFProtect, FlaskForm
 from flask_bootstrap import Bootstrap5
-from flask_caching import Cache
 from label_voucher import print_voucher
 from label_raffle import print_raffle
 
@@ -19,6 +18,7 @@
     Configuration,
     ServerConfiguration,
     PrinterConfiguration,
+    Font,
     LabelConfiguration,
     WebsiteConfiguration,
 )
@@ -32,9 +32,6 @@
 csrf = CSRFProtect(app)
 bootstrap = Bootstrap5(app)
 
-# Initialize a cache to suppress duplicates
-cache = Cache(app, config={"CACHE_TYPE": "SimpleCache", "CACHE_DEFAULT_TIMEOUT": 300})
-
 # Basic styling
 app.config["BOOTSTRAP_BOOTSWATCH_THEME"] = "sandstone"
 app.config["BOOTSTRAP_BTN_SIZE"] = "lg"
@@ -84,22 +81,27 @@ class ConfigForm(FlaskForm):
     submit = SubmitField("Save Changes")
 
 
-def cache_submitted_email(email):
-    """Cache the submitted email to avoid duplicates."""
-    cache.set(email, True)
-
-
-def is_duplicate_submission(email):
-    """Check if the email has already been submitted using cache."""
-    return cache.get(email) is not None
+def is_duplicate_submission(email, csv_file_path):
+    """Check if the email has already been submitted."""
+    try:
+        with open(csv_file_path, mode="r") as csvfile:
+            reader = csv.DictReader(csvfile)
+            for row in reader:
+                if row["Email"] == email:
+                    return True
+    except FileNotFoundError:
+        # If the CSV file does not exist, treat as no duplicates
+        pass
+    return False
 
 
 @app.route("/", methods=["GET", "POST"])
 def index():
     form = LeadForm()
 
     if form.validate_on_submit():
-        if is_duplicate_submission(form.email.data):
+        # Check if the form submission is a duplicate
+        if is_duplicate_submission(form.email.data, config.CSV_FILE_PATH):
             flash(
                 "You have already submitted the form. Duplicate submissions are not allowed.",
                 "warning",
@@ -126,9 +128,6 @@ def index():
         }
         append_to_csv(csv_data, config.CSV_FILE_PATH)
 
-        # Cache the submitted email to prevent future duplicates
-        cache_submitted_email(form.email.data)
-
         if config.ODOO_CREATELEAD_ENABLED:
             # Create lead in Odoo
             try:

pyproject.toml

@@ -21,7 +21,6 @@ blinkstick = "^1.2.0"
 gevent = "^24.2.1"
 html2image = "^2.0.4.3"
 segno = "^1.6.1"
-flask-caching = "^2.3.0"
 
 
 [tool.poetry.group.dev.dependencies]