# Copyright (c) Microsoft Corporation.
# Licensed under the MIT license.

import os
import sys
import json
import tempfile
import socket
import string
import random
import ruamel.yaml as yaml
import psutil
from colorama import Fore

from .constants import ERROR_INFO, NORMAL_INFO, WARNING_INFO

def get_yml_content(file_path):
    '''Load yaml file content'''
    try:
        with open(file_path, 'r') as file:
            return yaml.load(file, Loader=yaml.Loader)
    except yaml.scanner.ScannerError as err:
        print_error('yaml file format error!')
        print_error(err)
        exit(1)
    except Exception as exception:
        print_error(exception)
        exit(1)

def get_json_content(file_path):
    '''Load json file content'''
    try:
        with open(file_path, 'r') as file:
            return json.load(file)
    except TypeError as err:
        print_error('json file format error!')
        print_error(err)
        return None


def print_error(*content):
    '''Print error information to screen'''
    print(Fore.RED + ERROR_INFO + ' '.join([str(c) for c in content]) + Fore.RESET)

def print_green(*content):
    '''Print information to screen in green'''
    print(Fore.GREEN + ' '.join([str(c) for c in content]) + Fore.RESET)

def print_normal(*content):
    '''Print error information to screen'''
    print(NORMAL_INFO, *content)

def print_warning(*content):
    '''Print warning information to screen'''
    print(Fore.YELLOW + WARNING_INFO + ' '.join([str(c) for c in content]) + Fore.RESET)

def detect_process(pid):
    '''Detect if a process is alive'''
    try:
        process = psutil.Process(pid)
        return process.is_running()
    except:
        return False

def detect_port(port):
    '''Detect if the port is used'''
    socket_test = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
    try:
        socket_test.connect(('127.0.0.1', int(port)))
        socket_test.close()
        return True
    except:
        return False

def get_user():
    if sys.platform == 'win32':
        return os.environ['USERNAME']
    else:
        return os.environ['USER']

def check_tensorboard_version():
    try:
        import tensorboard
        return tensorboard.__version__
    except:
        print_error('import tensorboard error!')
        exit(1)

def generate_temp_dir():
    '''generate a temp folder'''
    def generate_folder_name():
        return os.path.join(tempfile.gettempdir(), 'nni', ''.join(random.sample(string.ascii_letters + string.digits, 8)))
    temp_dir = generate_folder_name()
    while os.path.exists(temp_dir):
        temp_dir = generate_folder_name()
    os.makedirs(temp_dir)
    return temp_dir
