# -*- coding: utf-8 -*-
from .processor_utils import get_scl_representation, format_variable_name,get_target_scl_name


# TODO: Import necessary functions from processor_utils
# Example: from .processor_utils import get_scl_representation, format_variable_name
# Or: import processors.processor_utils as utils

# TODO: Define constants if needed (e.g., SCL_SUFFIX) or import them
SCL_SUFFIX = "_scl"

# --- Function code starts ---
def process_math(instruction, network_id, scl_map, access_map, data):
    """
    Genera SCL para operaciones matemáticas (SUB, MUL, DIV).
    """
    instr_uid = instruction["instruction_uid"]
    instr_type = instruction["type"] # SUB, MUL, DIV
    if instr_type.endswith(SCL_SUFFIX) or "_error" in instr_type:
        return False

    # Mapa de tipos a operadores SCL
    op_map = {"SUB": "-", "MUL": "*", "DIV": "/"}
    scl_operator = op_map.get(instr_type)
    if not scl_operator:
         instruction["scl"] = f"// ERROR: Operación matemática no soportada: {instr_type}"
         instruction["type"] += "_error"
         return True

    # Obtener EN, IN1, IN2
    en_input = instruction["inputs"].get("en")
    in1_info = instruction["inputs"].get("in1")
    in2_info = instruction["inputs"].get("in2")
    en_scl = get_scl_representation(en_input, network_id, scl_map, access_map) if en_input else "TRUE"
    in1_scl = get_scl_representation(in1_info, network_id, scl_map, access_map)
    in2_scl = get_scl_representation(in2_info, network_id, scl_map, access_map)

    if en_scl is None or in1_scl is None or in2_scl is None:
        return False # Dependencias no listas

    # Obtener destino 'out'
    target_scl = get_target_scl_name(instruction, "out", network_id, default_to_temp=True)
    if target_scl is None:
        instruction["scl"] = f"// ERROR: {instr_type} {instr_uid} sin destino 'out'."
        instruction["type"] += "_error"
        return True

    # Formatear operandos si son variables
    op1 = format_variable_name(in1_scl) if in1_info and in1_info.get("type") == "variable" else in1_scl
    op2 = format_variable_name(in2_scl) if in2_info and in2_info.get("type") == "variable" else in2_scl

    # Añadir paréntesis si es necesario (especialmente para expresiones)
    op1 = f"({op1})" if (" " in op1 or "+" in op1 or "-" in op1 or "*" in op1 or "/" in op1) and not op1.startswith("(") else op1
    op2 = f"({op2})" if (" " in op2 or "+" in op2 or "-" in op2 or "*" in op2 or "/" in op2) and not op2.startswith("(") else op2

    # Generar SCL
    scl_core = f"{target_scl} := {op1} {scl_operator} {op2};"
    scl_final = f"IF {en_scl} THEN\n  {scl_core}\nEND_IF;" if en_scl != "TRUE" else scl_core

    instruction["scl"] = scl_final
    instruction["type"] = instr_type + SCL_SUFFIX

    # Actualizar mapa SCL
    map_key_out = (network_id, instr_uid, "out")
    scl_map[map_key_out] = target_scl
    map_key_eno = (network_id, instr_uid, "eno")
    scl_map[map_key_eno] = en_scl
    return True

# --- Procesador NOT ---

# --- Function code ends ---

# --- Processor Information Function ---
def get_processor_info():
    """Devuelve la información para operaciones matemáticas (excepto ADD, MOD)."""
    # Esta función maneja SUB, MUL, DIV.
    return [
        {'type_name': 'sub', 'processor_func': process_math, 'priority': 4}, # Resta
        {'type_name': 'mul', 'processor_func': process_math, 'priority': 4}, # Multiplicación
        {'type_name': 'div', 'processor_func': process_math, 'priority': 4}  # División
    ]