class_name Utils
extends Node

static func read_string(tag_group_name: String, base_tag_name: String) -> String:
	"""Reads the log string from PLC DATA array"""
	var result = ""
	
	# Construct the length and data tag names
	var len_tag = base_tag_name + ".LEN"
	var data_tag = base_tag_name + ".DATA"
	
	# Read the actual string length from PLC (if available)
	var string_length = OIPComms.read_int32(tag_group_name, len_tag)
	
	# Limit to 82 max and ensure it's valid
	if string_length <= 0 or string_length > 82:
		string_length = 82
	
	# Read each character
	for i in range(string_length):
		var data_tag_indexed = data_tag + "[" + str(i) + "]"
		var char_value = OIPComms.read_int8(tag_group_name, data_tag_indexed)
		
		# Check for null terminator or invalid ASCII

		
		# Convert SINT to ASCII character
		if char_value > 0 and char_value < 128:  # Valid ASCII range
			result += char(char_value)
	
	return result