import os
import subprocess
import sys

# Hilfsfunktion wie in plant2dxf.py

def check_environment_var(env_str: str, fallback: str) -> str:
    out_path = os.environ.get(env_str)
    if out_path:
        return out_path
    print(f"[WARN] Umgebungsvariable {env_str} ist nicht gesetzt oder leer. Verwende '{fallback}'.")
    return fallback

# Verzeichnisse über Umgebungsvariablen oder Fallback
INPUT_DIR = os.path.join(check_environment_var("PROJECT_WORK", "."), "input_svg")
OUTPUT_DIR = os.path.join(check_environment_var("PROJECT_WORK", "."), "converted_dxfs")
INKSCAPE = "inkscape"  # ggf. vollständiger Pfad angeben

os.makedirs(OUTPUT_DIR, exist_ok=True)

for filename in os.listdir(INPUT_DIR):
    if filename.lower().endswith((".svg", ".xml")):
        in_path = os.path.join(INPUT_DIR, filename)
        name_wo_ext = os.path.splitext(filename)[0]
        out_path = os.path.join(OUTPUT_DIR, name_wo_ext + ".dxf")

        print(f"Konvertiere: {filename} → {out_path}")
        subprocess.run([
            INKSCAPE,
            in_path,
            "--export-type=dxf",
            f"--export-filename={out_path}"
        ], check=True)