Add basic alert endpoints.

Author: HalfVoxel

api/src/alerts/__init__.py

@@ -0,0 +1,5 @@
+from service.internal_service import InternalService
+
+service = InternalService(name="alerts")
+
+import alerts.views

api/src/alerts/views.py

@@ -0,0 +1,46 @@
+from logging import getLogger
+
+from flask import request
+from multiaccessy import service
+from service.api_definition import POST, PUBLIC
+from service.config import config
+from service.error import BadRequest, UnprocessableEntity
+from slack_sdk import WebClient
+
+logger = getLogger("alerts")
+
+FIRE_ALERT_CHANNEL = "C09S5J35FME"
+
+
+@service.route("/pressure_sensor_triggered", method=POST, permission=PUBLIC)
+def fire() -> str:
+    token = config.get("SLACK_BOT_TOKEN")
+    if not token:
+        logger.error("Slack bot token not configured, but we received an event")
+        raise BadRequest("Slack bot token not configured")
+
+    slack_client = WebClient(token=token)
+
+    slack_client.chat_postMessage(
+        channel=FIRE_ALERT_CHANNEL,
+        mrkdwn=True,
+        markdown_text=f":fire: :fire: :fire:\n\nFire detected in wood workshop dust collector. Dumping 20 liters of water into the dust bin.\n\n:fire: :fire: :fire:",
+    )
+    return "Alert sent"
+
+
+@service.route("/pressure_sensor_reset", method=POST, permission=PUBLIC)
+def fire_reset() -> str:
+    token = config.get("SLACK_BOT_TOKEN")
+    if not token:
+        logger.error("Slack bot token not configured, but we received an event")
+        raise BadRequest("Slack bot token not configured")
+
+    slack_client = WebClient(token=token)
+
+    slack_client.chat_postMessage(
+        channel=FIRE_ALERT_CHANNEL,
+        mrkdwn=True,
+        markdown_text=f"Pressure sensor in wood workshop dust collector has been reset. Presumably someone just refilled the sprinkler system with water. Good work!",
+    )
+    return "Alert sent"

api/src/services.py

@@ -1,6 +1,7 @@
 import statistics
 from collections import namedtuple
 
+import alerts
 import box_terminator
 import core
 import member
@@ -32,4 +33,5 @@
     Instance(path="/accessy", service=multiaccessy.service),
     Instance(path="/box_terminator", service=box_terminator.service),
     Instance(path="/tasks", service=tasks.service),
+    Instance(path="/alerts", service=alerts.service),
 )