# coding=utf-8

import sys
import os
import stat
import time
import datetime
import subprocess
import shlex
import shutil
import json
import requests


def execute_command(cmdstring, cwd=None, shell=True):
    """Execute the system command at the specified address."""

    if shell:
        cmdstring_list = cmdstring

    sub = subprocess.Popen(cmdstring_list, cwd=cwd, stdin=subprocess.PIPE,
                           stdout=subprocess.PIPE, shell=shell, bufsize=4096)

    stdout_str = ''
    while sub.poll() is None:
        stdout_str += sub.stdout.read()
        time.sleep(0.1)

    return stdout_str


def determine_url_valid(url_from_srv):
    """Check the validity of urls."""

    headers = {'Connection': 'keep-alive',
               'Accept-Encoding': 'gzip, deflate',
               'Accept': '*/*',
               'User-Agent': 'curl/7.54.0'}

    try:
        for i in range(0, 3):
            r = requests.get(url_from_srv, stream=True, headers=headers)
            if r.status_code == requests.codes.not_found:
                if i == 2:
                    print("Warning : %s is invalid." % url_from_srv)
                    return False
                time.sleep(1)
            else:
                break

        return True

    except Exception, e:
        #         print('e.message:%s\t' % e.message)
        print('Network connection error or the url : %s is invalid.\n' %
              url_from_srv)


def check_json_file(work_root):
    """Check the json file."""

    file_count = 1
    folder_walk_result = os.walk(work_root)

    for path, d, filelist in folder_walk_result:
        for filename in filelist:
            if filename == 'package.json':
                json_pathname = os.path.join(path, 'package.json')
                print("\nNo.%d" % file_count)
                file_count += 1
                if not json_file_content_check(json_pathname):
                    return False

    return True


def json_file_content_check(json_pathname):
    """Check the content of json file."""

    with open(json_pathname, 'r+') as f:
        json_content = f.read()

    package_info = json.loads(json_content)
    print(package_info['name'])

    if package_info['category'] == '' :
        print ('The category of ' + package_info['name'] + ' package is lost.')  
        return False 
        
    if package_info['author']['name'] == '' :
        print ('The author name of ' + package_info['name'] + ' package is lost.') 
        return False  
        
    if package_info['author']['email'] == '' :
        print ('The author email of ' + package_info['name'] + ' package is lost.') 
        return False  
        
    if package_info['license'] == '' :
        print ('The license of ' + package_info['name'] + ' package is lost.') 
        return False   
        
    if package_info['repository'] == '' :
        print ('The repository of ' + package_info['name'] + ' package is lost.') 
        return False         
    else :      
        if not determine_url_valid(package_info['repository']):
            return False       
        
    for i in range(0, len(package_info['site'])):
        package_version = package_info['site'][i]['version']
        package_url = package_info['site'][i]['URL']
        print("%s : %s" % (package_version, package_url))
        if not package_url[-4:] == '.git':
            print(package_info['site'][i]['filename'])
        if not determine_url_valid(package_url):
            return False

    return True


def main():
    """The entry point of the script."""
    
    try:
        work_root = os.getcwd()
        print(work_root)
        if not check_json_file(work_root):
            sys.exit(1)

        sys.exit(0)

    except Exception, e:
        print('error.message: %s\n\t' % (e.message))
        sys.exit(1)


if __name__ == '__main__':
    main()