Fix Chart.yaml for new applications

Helm completely ignores the contents of Chart.yaml in starters so
far as I can tell, so load the Chart.yaml from the starter and
template the key parts of it ourselves, overwriting the generated
Chart.yaml for the application with that.

src/phalanx/services/application.py

@@ -68,9 +68,19 @@ def create_application(
             raise ApplicationExistsError(name)
         self._helm.create(name, starter)
 
-        # Replace the description in the chart with the provided one.
-        chart = yaml.safe_load((path / "Chart.yaml").read_text())
+        # Unfortunately, Helm completely ignores the Chart.yaml in a starter
+        # so far as I can tell, so we have to load the starter Chart.yaml
+        # ourselves and replace the generated Chart.yaml with it, but
+        # preserving the substitutions that Helm does make.
+        starter_path = self._config.get_starter_path(starter)
+        chart = yaml.safe_load((starter_path / "Chart.yaml").read_text())
+        helm_chart = yaml.safe_load((path / "Chart.yaml").read_text())
+        chart["name"] = helm_chart["name"]
         chart["description"] = description
+        if "sources" in chart:
+            chart["sources"] = [
+                s.replace("<CHARTNAME>", name) for s in chart["sources"]
+            ]
         with (path / "Chart.yaml").open("w") as fh:
             yaml.dump(chart, fh)
 

tests/cli/application_test.py

@@ -91,7 +91,7 @@ def test_create(tmp_path: Path) -> None:
     (apps_path / "zzz-other-app" / "values-minikube.yaml").write_text("")
 
     # Load the environment, make sure the new apps are enabled, and check that
-    # the chart descriptions are correct.
+    # the chart metadata is correct.
     factory = Factory(config_path)
     config_storage = factory.create_config_storage()
     environment = config_storage.load_environment("minikube")
@@ -104,6 +104,17 @@ def test_create(tmp_path: Path) -> None:
         ("zzz-other-app", "Last new app"),
     ):
         assert environment.applications[app].chart["description"] == expected
+        assert environment.applications[app].chart["version"] == "1.0.0"
+
+    # Charts created from the empty starter should not have appVersion. Charts
+    # using the web-service starter should, set to 0.1.0.
+    assert "appVersion" not in environment.applications["aaa-new-app"].chart
+    assert "appVersion" not in environment.applications["zzz-other-app"].chart
+    assert environment.applications["hips"].chart["appVersion"] == "0.1.0"
+
+    # Charts using the web-service starter should have a default sources.
+    expected = "https://github.com/lsst-sqre/hips"
+    assert environment.applications["hips"].chart["sources"][0] == expected
 
 
 def test_create_prompt(tmp_path: Path) -> None:

tests/data/input/starters/web-service/Chart.yaml

@@ -2,6 +2,7 @@ apiVersion: v2
 name: <CHARTNAME>
 version: 1.0.0
 description: "Helm starter chart for a new RSP service"
-home: "https://github.com/lsst-sqre/<CHARTNAME>"
+sources:
+  - "https://github.com/lsst-sqre/<CHARTNAME>"
 type: application
 appVersion: "0.1.0"