132 lines
4.1 KiB
Python
Executable File
132 lines
4.1 KiB
Python
Executable File
"""Class to perform requests to Tuya Cloud APIs."""
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import functools
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import hashlib
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import hmac
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import json
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import requests
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import time
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# Signature algorithm.
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def calc_sign(msg, key):
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sign = (
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hmac.new(
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msg=bytes(msg, "latin-1"),
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key=bytes(key, "latin-1"),
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digestmod=hashlib.sha256,
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)
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.hexdigest()
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.upper()
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)
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return sign
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class TuyaCloudApi:
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"""Class to send API calls."""
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def __init__(self, hass, region_code, client_id, secret, user_id):
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"""Initialize the class."""
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self._hass = hass
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self._base_url = f"https://openapi.tuya{region_code}.com"
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self._client_id = client_id
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self._secret = secret
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self._user_id = user_id
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self._access_token = ""
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self._device_list = {}
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def generate_payload(self, method, t, url, headers, body=None):
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payload = self._client_id + self._access_token + t
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payload += method + "\n"
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# Content-SHA256
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payload += hashlib.sha256(bytes((body or "").encode("utf-8"))).hexdigest()
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payload += (
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"\n"
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+ "".join(
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[
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"%s:%s\n" % (key, headers[key]) # Headers
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for key in headers.get("Signature-Headers", "").split(":")
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if key in headers
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]
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)
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+ "\n/"
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+ url.split("//", 1)[-1].split("/", 1)[-1] # Url
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)
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# print("PAYLOAD: {}".format(payload))
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return payload
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async def async_make_request(self, method, url, body=None, headers={}):
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"""Perform requests."""
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t = str(int(time.time() * 1000))
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payload = self.generate_payload(method, t, url, headers, body)
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default_par = {
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"client_id": self._client_id,
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"access_token": self._access_token,
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"sign": calc_sign(payload, self._secret),
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"t": t,
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"sign_method": "HMAC-SHA256",
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}
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full_url = self._base_url + url
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# print("\n" + method + ": [{}]".format(full_url))
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if method == "GET":
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func = functools.partial(
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requests.get, full_url, headers=dict(default_par, **headers)
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)
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elif method == "POST":
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func = functools.partial(
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requests.post,
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full_url,
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headers=dict(default_par, **headers),
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data=json.dumps(body),
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)
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# print("BODY: [{}]".format(body))
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elif method == "PUT":
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func = functools.partial(
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requests.put,
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full_url,
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headers=dict(default_par, **headers),
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data=json.dumps(body),
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)
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r = await self._hass.async_add_executor_job(func)
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# r = json.dumps(r.json(), indent=2, ensure_ascii=False) # Beautify the format
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return r
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async def async_get_access_token(self):
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"""Obtain a valid access token."""
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r = await self.async_make_request("GET", "/v1.0/token?grant_type=1")
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if not r.ok:
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return "Request failed, status " + str(r.status)
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r_json = r.json()
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if not r_json["success"]:
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return f"Error {r_json['code']}: {r_json['msg']}"
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self._access_token = r.json()["result"]["access_token"]
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return "ok"
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async def async_get_devices_list(self):
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"""Obtain the list of devices associated to a user."""
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r = await self.async_make_request(
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"GET", url=f"/v1.0/users/{self._user_id}/devices"
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)
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if not r.ok:
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return "Request failed, status " + str(r.status)
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r_json = r.json()
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if not r_json["success"]:
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# print(
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# "Request failed, reply is {}".format(
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# json.dumps(r_json, indent=2, ensure_ascii=False)
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# )
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# )
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return f"Error {r_json['code']}: {r_json['msg']}"
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self._device_list = {dev["id"]: dev for dev in r_json["result"]}
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# print("DEV__LIST: {}".format(self._device_list))
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return "ok"
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