import base64
import calendar
import datetime
import hashlib
import hmac
import os
import random
from urllib import parse

import requests


def get_md5_01(file_path):
    md5 = None
    if os.path.isfile(file_path):
        f = open(file_path, 'rb')
        md5_obj = hashlib.md5()
        md5_obj.update(f.read())
        hash_code = md5_obj.hexdigest()
        f.close()
        md5 = str(hash_code).lower()
    return md5


def createTransaction(HTTPMethod, filePath):
    fileName = filePath.split('/')[-1]

    param = {
        # "Format": "JSON",
        "Version": '2017-07-11',
        "AccessKeyId": "LTAIeS8aBuPBZxV2",
        "SignatureMethod": "HMAC-SHA1",
        "Timestamp": datetime.datetime.utcnow().isoformat()[:19] + 'Z',
        "SignatureVersion": "1.0",
        "SignatureNonce": '9166ab59-f445-' + str(random.randint(1000, 9999)) + '-911d-664c1570df0f',
        "Action": "CreateTransaction"
        # "Ext": fileName[-fileName[::-1].index('.'):],
        # "Md5": get_md5_01(filePath),
        # "Size": os.path.getsize(filePath)
    }
    AccessKeySecret = b'hyPeTaDQBQs6jetYcqY0BUdpacXTH3&'
    canonicalQueryString = ''

    for i in sorted(param.items(), key=lambda d: d[0]):
        canonicalQueryString += '&' + i[0] + '=' + str(i[1])
    print(canonicalQueryString[1:])

    strUrlEncoding = HTTPMethod + '&%2F&' + parse.quote(canonicalQueryString[1:])
    print(strUrlEncoding)
    stringToSign = base64.b64encode(hmac.new(AccessKeySecret, strUrlEncoding.encode('UTF-8'), 'sha1').digest())
    print(stringToSign)
    server = 'https://cloudphoto.cn-shanghai.aliyuncs.com'
    url = server + "?" + canonicalQueryString[1:] + '&Signature=' + parse.quote(stringToSign.decode('utf-8')).replace(
        '/', '%2F')
    print(url)
    result = requests.get(url)

    print(result.content)


if __name__ == '__main__':
    createTransaction("GET", "C:/Users/10295/Desktop/灵梦.png")
    # print(datetime.datetime.utcnow())