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"""
Validation utilities for HVAC Load Calculator
This module provides validation functions for input data in the HVAC Load Calculator.
"""
class ValidationWarning:
"""
A class to represent validation warnings.
"""
def __init__(self, message, suggestion, is_critical=False):
"""
Initialize a validation warning.
Args:
message (str): Warning message
suggestion (str): Suggestion for fixing the warning
is_critical (bool): Whether the warning is critical (prevents proceeding)
"""
self.message = message
self.suggestion = suggestion
self.is_critical = is_critical
def validate_input(input_value, validation_type, min_value=None, max_value=None, required=False):
"""
Validate an input value.
Args:
input_value: Value to validate
validation_type (str): Type of validation ('number', 'text', etc.)
min_value: Minimum allowed value (for numeric inputs)
max_value: Maximum allowed value (for numeric inputs)
required (bool): Whether the input is required
Returns:
tuple: (is_valid, warnings)
"""
warnings = []
is_valid = True
# Check if required
if required and (input_value is None or input_value == "" or (isinstance(input_value, (int, float)) and input_value == 0)):
warnings.append(ValidationWarning(
"Required field is empty",
"Please provide a value for this field",
is_critical=True # Keep required fields as critical
))
is_valid = False
# Skip further validation if value is empty and not required
if input_value is None or input_value == "":
return is_valid, warnings
# Validate based on type
if validation_type == 'number':
try:
# Convert to float if it's a string
if isinstance(input_value, str):
input_value = float(input_value)
# Check min value
if min_value is not None and input_value < min_value:
warnings.append(ValidationWarning(
f"Value is below minimum ({min_value})",
f"Please enter a value greater than or equal to {min_value}",
is_critical=False # Changed to non-critical
))
is_valid = False
# Check max value
if max_value is not None and input_value > max_value:
warnings.append(ValidationWarning(
f"Value exceeds maximum ({max_value})",
f"Please enter a value less than or equal to {max_value}",
is_critical=False # Changed to non-critical
))
is_valid = False
except ValueError:
warnings.append(ValidationWarning(
"Invalid number format",
"Please enter a valid number",
is_critical=True # Keep format validation as critical
))
is_valid = False
elif validation_type == 'text':
# Add text validation if needed
pass
return is_valid, warnings
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