New major functionality CONDITIONS - Compare values, check numbers within range, etc

changedetectionio/conditions/form.py

@@ -0,0 +1,44 @@
+# Condition Rule Form (for each rule row)
+from wtforms import Form, SelectField, StringField, validators
+from wtforms import validators
+
+class ConditionFormRow(Form):
+
+    # ✅ Ensure Plugins Are Loaded BEFORE Importing Choices
+    from changedetectionio.conditions import plugin_manager
+    from changedetectionio.conditions import operator_choices, field_choices
+    field = SelectField(
+        "Field",
+        choices=field_choices,
+        validators=[validators.Optional()]
+    )
+
+    operator = SelectField(
+        "Operator",
+        choices=operator_choices,
+        validators=[validators.Optional()]
+    )
+
+    value = StringField("Value", validators=[validators.Optional()])
+
+    def validate(self, extra_validators=None):
+        # First, run the default validators
+        if not super().validate(extra_validators):
+            return False
+
+        # Custom validation logic
+        # If any of the operator/field/value is set, then they must be all set
+        if any(value not in ("", False, "None", None) for value in [self.operator.data, self.field.data, self.value.data]):
+            if not self.operator.data or self.operator.data == 'None':
+                self.operator.errors.append("Operator is required.")
+                return False
+
+            if not self.field.data or self.field.data == 'None':
+                self.field.errors.append("Field is required.")
+                return False
+
+            if not self.value.data:
+                self.value.errors.append("Value is required.")
+                return False
+
+        return True  # Only return True if all conditions pass