#!/usr/bin/env python3
"""ROCm_SMI_LIB CLI Tool Python Bindings"""
# NOTE: You MUST call rsmiBindings.initRsmiBindings() when using this library!
# TODO: Get most (or all) of these from rocm_smi.h to avoid mismatches and redundancy

from __future__ import print_function
import ctypes.util
from ctypes import *
from enum import Enum

import os

# Use ROCm installation path if running from standard installation
# With File Reorg rsmiBindings.py and rsmiBindingsInit.py will be installed in 
# /opt/rocm/libexec/rocm_smi. relative path changed accordingly.
# if ROCM_SMI_LIB_PATH is set, we can load 'librocm_smi64.so' from that location
#
# Library load is wrapped in a function so prints can be hidden for PRINT_JSON mode.
path_librocm = str()
def initRsmiBindings(silent=False):
    def print_silent(*args):
        if not silent:
            print(args)

    rocm_smi_lib_path = os.getenv('ROCM_SMI_LIB_PATH')
    if (rocm_smi_lib_path is not None):
        path_librocm = rocm_smi_lib_path
    else:
        path_librocm = os.path.dirname(os.path.realpath(__file__)) + '/../../lib/librocm_smi64.so.1'

    if not os.path.isfile(path_librocm):
        print_silent('Unable to find %s . Trying /opt/rocm*' % path_librocm)
        for root, dirs, files in os.walk('/opt', followlinks=True):
            if 'librocm_smi64.so.1' in files:
                path_librocm = os.path.join(os.path.realpath(root), 'librocm_smi64.so.1')
        if os.path.isfile(path_librocm):
            print_silent('Using lib from %s' % path_librocm)
        else:
            print('Unable to find librocm_smi64.so.1')

    # ----------> TODO: Support static libs as well as SO
    try:
        cdll.LoadLibrary(path_librocm)
        return CDLL(path_librocm)
    except OSError:
        print('Unable to load the rocm_smi library.\n'\
              'Set LD_LIBRARY_PATH to the folder containing librocm_smi64.so.1\n'\
              '{0}Please refer to https://github.com/'\
              'RadeonOpenCompute/rocm_smi_lib for the installation guide.{1}'\
              .format('\33[33m', '\033[0m'))
        exit()

SMI_HASH = 'c2d9476115'
