From 208b5aeb6f63528b9c12157016f233bf98871082 Mon Sep 17 00:00:00 2001
From: Andreas Motl <andreas@hiveeyes.org>
Date: Sat, 20 Apr 2024 01:05:01 +0200
Subject: [PATCH] Add subcommand `make-dashboard`, for creating a Grafana
 Dashboard

---
 CHANGES.md                | 1 +
 ds18b20_datalogger/cli.py | 3 +++
 tests/test_cli.py         | 9 +++++++++
 3 files changed, 13 insertions(+)

diff --git a/CHANGES.md b/CHANGES.md
index 65227e5..d8faea9 100644
--- a/CHANGES.md
+++ b/CHANGES.md
@@ -7,6 +7,7 @@
 - Define MQTT and sensor configuration separately from implementation.
   The data logger uses a YAML file now, for example like `etc/mois.yaml`.
 - Added subcommand `make-config`, for creating a configuration blueprint
+- Added subcommand `make-dashboard`, for creating a Grafana Dashboard
 
 ## v0.0.2 - 2024-04-15
 - Publish as `ds18b20-datalogger` package
diff --git a/ds18b20_datalogger/cli.py b/ds18b20_datalogger/cli.py
index 5b11304..b1bdb99 100644
--- a/ds18b20_datalogger/cli.py
+++ b/ds18b20_datalogger/cli.py
@@ -26,5 +26,8 @@ def main():
     elif subcommand == "make-config":
         config_template = files("ds18b20_datalogger") / "datalogger.yaml"
         print(config_template.read_text(), file=sys.stdout)  # noqa: T201
+    elif subcommand == "make-dashboard":
+        dashboard = files("ds18b20_datalogger") / "grafana-dashboard.json"
+        print(dashboard.read_text(), file=sys.stdout)  # noqa: T201
     else:
         raise ValueError(f"Subcommand unknown: {subcommand}")
diff --git a/tests/test_cli.py b/tests/test_cli.py
index 9eb952c..d005e7b 100644
--- a/tests/test_cli.py
+++ b/tests/test_cli.py
@@ -1,3 +1,4 @@
+import json
 import subprocess
 import typing as t
 
@@ -28,3 +29,11 @@ def test_cli_make_config():
     config = yaml.safe_load(output)
     assert "mqtt" in config
     assert "one-wire" in config
+
+
+def test_cli_make_dashboard():
+    exitcode, output = invoke("ds18b20-datalogger make-dashboard")
+    dashboard = json.loads(output)
+    assert "annotations" in dashboard
+    assert "panels" in dashboard
+    assert "title" in dashboard