1 files changed, 45 insertions, 0 deletions
diff --git a/jimbrella/sms.py b/jimbrella/sms.py
new file mode 100644
index 0000000..e83dc54
--- /dev/null
+++ b/jimbrella/sms.py
@@ -0,0 +1,45 @@
+import logging
+import json
+from alibabacloud_dysmsapi20170525.client import Client as DysmsapiClient
+from alibabacloud_dysmsapi20170525 import models as dysmsapi_models
+from alibabacloud_tea_openapi import models as open_api_models
+from .config import config
+
+
+class SMS:
+    """SMS notification client.
+
+    This client talks to Aliyun's shit-in-a-box API when JImbrella needs to
+    remind a tenant to return their overdue umbrella.
+    """
+
+    def __init__(self):
+        """Initialize Aliyun client"""
+        self.config = open_api_models.Config(
+            access_key_id=config.get("sms", "access_key_id"),
+            access_key_secret=config.get("sms", "access_key_secret"),
+        )
+        self.client = DysmsapiClient(self.config)
+
+    def _send(
+        self,
+        phone_numbers: str,
+        sign_name: str,
+        template_code: str,
+        template_param: dict,
+    ):
+        """Call API to send generic SMS"""
+        req = dysmsapi_models.SendSmsRequest(
+            phone_numbers=phone_numbers,
+            sign_name=sign_name,
+            template_code=template_code,
+            template_param=json.dumps(template_param),
+        )
+        resp = self.client.send_sms(req)
+        if resp.body.code != "OK":
+            logging.warning(
+                "API call to send SMS notification to %s failed", phone_numbers
+            )
+
+    def remind_overdue(self, tenant_phone: str, tenant_name: str, key: int):
+        self._send(tenant_phone, "TBD", "TBD", {"name": tenant_name, "key": key})