# generators/generate_scl_db.py
# -*- coding: utf-8 -*-
from .generator_utils import format_variable_name, generate_scl_declarations

def _generate_scl_header(data, scl_block_name):
    """Genera el encabezado SCL para DB."""
    scl_output = []
    block_type = data.get("block_type", "Unknown")
    block_name = data.get("block_name", "UnknownBlock")
    block_number = data.get("block_number")
    block_comment = data.get("block_comment", "")

    scl_output.append(f"// Block Type: {block_type}")
    if block_name != scl_block_name:
        scl_output.append(f"// Block Name (Original): {block_name}")
    if block_number:
        scl_output.append(f"// Block Number: {block_number}")
    if block_comment:
        scl_output.append(f"// Block Comment:")
        for line in block_comment.splitlines():
            scl_output.append(f"//   {line}")
    scl_output.append("")
    scl_output.append(f'DATA_BLOCK "{scl_block_name}"') # Keyword específica
    scl_output.append("{ S7_Optimized_Access := 'TRUE' }")
    scl_output.append("VERSION : 0.1")
    scl_output.append("")
    return scl_output

def _generate_scl_interface(interface_data):
    """Genera la sección VAR para DB (basada en 'Static')."""
    scl_output = []
    static_vars = interface_data.get("Static", [])
    if static_vars:
        scl_output.append("VAR")
        scl_output.extend(generate_scl_declarations(static_vars, indent_level=1))
        scl_output.append("END_VAR")
    else:
        print("Advertencia: No se encontró sección 'Static' o está vacía en la interfaz del DB.")
        scl_output.append("VAR\nEND_VAR") # Añadir vacío
    scl_output.append("")
    return scl_output

def generate_scl_for_db(data):
    """Genera el contenido SCL completo para un DATA_BLOCK."""
    scl_output = []
    scl_block_name = format_variable_name(data.get("block_name", "UnknownDB"))

    # Generar cabecera
    scl_output.extend(_generate_scl_header(data, scl_block_name))

    # Generar interfaz
    interface_data = data.get("interface", {})
    scl_output.extend(_generate_scl_interface(interface_data))

    # Generar cuerpo (vacío para DB)
    scl_output.append("BEGIN")
    scl_output.append("  // Data Blocks have no executable code")
    scl_output.append("END_DATA_BLOCK")

    return scl_output