import os
import platform
import subprocess
from config_loader import CONFIG

# ========================================================================
def get_current_os():
    if os.path.exists("/.dockerenv"):
        return "docker"

    system = platform.system().lower()
    if system == "darwin":
        return "mac"
    if system == "windows":
        return "windows"
    return "linux"

# ========================================================================
def get_mount_point():
    return CONFIG.smb.mount_points.get(get_current_os(), "")


def esta_montado(mount_point):
    if not mount_point:
        return False
    if get_current_os() == "windows":
        return os.path.exists(mount_point)
    return os.path.ismount(mount_point) or os.path.exists(
        os.path.join(mount_point, ".mounted_check")
    )

# ========================================================================
def montar_smb():
    mount_point = get_mount_point()
    if not mount_point:
        print("      ⚠️ No hay punto de montaje configurado para este SO.")
        return False

    if esta_montado(mount_point):
        return True

    current_os = get_current_os()

    if current_os != "windows" and not os.path.exists(mount_point):
        os.makedirs(mount_point)

    smb = CONFIG.smb

    try:
        if current_os == "mac":
            cmd = (
                f"mount_smbfs //'{smb.username}':'{smb.password}'"
                f"@{smb.server}/{smb.share} {mount_point}"
            )
            subprocess.run(cmd, shell=True, check=True, capture_output=True)
        elif current_os == "linux":
            cmd = (
                f"sudo mount -t cifs //{smb.server}/{smb.share} {mount_point}"
                f" -o username={smb.username},password={smb.password}"
            )
            subprocess.run(cmd, shell=True, check=True, capture_output=True)
        
        elif current_os == "docker":
            print("ℹ️ Docker: SMB debe estar montado por el host")
            return os.path.exists(mount_point)
        
        elif current_os == "windows":
            ruta_smb = f"\\\\{smb.server}\\{smb.share}"
            cmd = [
                "net", "use", mount_point, ruta_smb,
                smb.password, f"/user:{smb.username}", "/persistent:no",
            ]
            subprocess.run(cmd, check=True, capture_output=True)

        print(f"      ✅ SMB montado en: {mount_point}")
        return True
    except Exception as e:
        print(f"      ⚠️ Error montando SMB: {e}")
        return False

# ========================================================================
def sincronizar_a_smb(ruta_local, subfolder_cuenta):
    if not os.path.isdir(ruta_local):
        print(f"      ⚠️ La carpeta local no existe: {ruta_local}")
        return False

    if not montar_smb():
        print("      ❌ No se pudo sincronizar: SMB no montado.")
        return False

    mount_point = get_mount_point()
    current_os = get_current_os()

    if current_os == "windows" and mount_point.endswith(":") and len(mount_point) == 2:
        mount_point += "\\"

    subfolder = subfolder_cuenta.lstrip("/")
    ruta_destino = os.path.normpath(os.path.join(mount_point, subfolder))

    if not os.path.exists(ruta_destino):
        os.makedirs(ruta_destino)
        print(f"      📁 Carpeta creada en SMB: {ruta_destino}")

    source = os.path.abspath(ruta_local)
    destination = os.path.abspath(ruta_destino)

    print(f"      🚀 Sincronizando {current_os.upper()}: {source} -> {destination}")

    try:
        if current_os in ("mac", "linux", "docker"):
            # Solo sincronizar PDF y XML
            cmd = (
                f"find {source} -maxdepth 1 \\( -name '*.pdf' -o -name '*.xml' \\) "
                f"-exec rsync -av --remove-source-files {{}} {destination}/ \\;"
            )
            subprocess.run(cmd, shell=True, check=True, capture_output=True, text=True)
            # Limpiar temporales restantes (json, zip)
            subprocess.run(
                f"find {source} -type f \\( -name '*.json' -o -name '*.zip' \\) -delete",
                shell=True, check=True, capture_output=True, text=True,
            )

        elif current_os == "windows":
            import shutil
            for archivo in os.listdir(source):
                if not archivo.lower().endswith((".pdf", ".xml")):
                    continue
                src_path = os.path.join(source, archivo)
                dst_path = os.path.join(destination, archivo)
                if os.path.isfile(src_path):
                    if os.path.exists(dst_path):
                        os.remove(dst_path)
                    shutil.move(src_path, dst_path)

            for archivo in os.listdir(source):
                if archivo.lower().endswith((".json", ".zip")):
                    os.remove(os.path.join(source, archivo))

        print(f"      ✅ Sincronización completada.")
        return True
    except Exception as e:
        print(f"      ❌ Error en sincronización: {e}")
        return False
# ========================================================================