Wait for Plausible active state (#3153)

Co-authored-by: Dhruv Bhanushali <[email protected]>

frontend/justfile

@@ -59,7 +59,7 @@ up *flags:
 
 # Wait for all profile services to be up
 wait-up: up
-    echo "🚧 TODO"
+    just wait
 
 # Set up user and test site in Plausible
 init: wait-up
@@ -71,3 +71,19 @@ run *args:
 
 types:
     cd .. && pnpm exec vue-tsc -p frontend --noEmit
+
+##########
+# Health #
+##########
+
+# Check the health of the service
+@plausible-health host="localhost:50288":
+    -curl -s 'http://localhost:50288/api/health' --fail | grep -v -c 'error'
+
+# Wait for the service to be healthy
+@wait host="localhost:50288":
+    # The just command on the second line is executed in the context of the
+    # parent directory and so must be prefixed with `frontend/`.
+    just ../_loop \
+    '"$(just frontend/plausible-health {{ host }})" != "1" ' \
+    "Waiting for Plausible to be healthy..."