Run Lighthouse against static frontends

modules/lighthouse.sh

@@ -6,15 +6,123 @@ echo "================================"
 echo " Davidson CI - Lighthouse"
 echo "================================"
 
+set_status() {
+    echo "DAVIDSON_LIGHTHOUSE_STATUS=$1" >> "${GITHUB_ENV:-/dev/null}"
+}
+
+cleanup() {
+    if [ -n "${SERVER_PID:-}" ]; then
+        echo "Stopping frontend server..."
+        kill "$SERVER_PID" 2>/dev/null || true
+    fi
+}
+
+trap cleanup EXIT
+
+# Skip repositories that are not frontend-capable.
 if [ "${DAVIDSON_LIGHTHOUSE_ELIGIBLE:-false}" != "true" ]; then
     echo "No supported frontend detected."
     echo "Lighthouse skipped."
-
-    echo "DAVIDSON_LIGHTHOUSE_STATUS=SKIP" >> "${GITHUB_ENV:-/dev/null}"
+    set_status "SKIP"
     exit 0
 fi
 
-echo "Frontend detected: ${DAVIDSON_FRONTEND_TYPE:-unknown}"
-echo "Lighthouse eligible."
+FRONTEND_TYPE="${DAVIDSON_FRONTEND_TYPE:-unknown}"
 
-echo "DAVIDSON_LIGHTHOUSE_STATUS=PASS" >> "${GITHUB_ENV:-/dev/null}"
+echo "Frontend detected: $FRONTEND_TYPE"
+
+# For v1, only run actual Lighthouse against static sites.
+if [ "$FRONTEND_TYPE" != "static" ]; then
+    echo "Frontend type '$FRONTEND_TYPE' is not supported by the Lighthouse runner yet."
+    echo "Lighthouse skipped."
+    set_status "SKIP"
+    exit 0
+fi
+
+# Check required tools.
+if ! command -v php >/dev/null 2>&1; then
+    echo "ERROR: PHP CLI is not installed on the Davidson CI runner."
+    set_status "FAIL"
+    exit 1
+fi
+
+if ! command -v lighthouse >/dev/null 2>&1; then
+    echo "ERROR: Lighthouse CLI is not installed on the Davidson CI runner."
+    set_status "FAIL"
+    exit 1
+fi
+
+if ! command -v curl >/dev/null 2>&1; then
+    echo "ERROR: curl is not installed on the Davidson CI runner."
+    set_status "FAIL"
+    exit 1
+fi
+
+REPORT_DIR=".davidson-reports"
+RAW_REPORT="$REPORT_DIR/lighthouse-report.json"
+
+mkdir -p "$REPORT_DIR"
+
+HOST="127.0.0.1"
+PORT="8080"
+URL="http://$HOST:$PORT/"
+
+echo "Starting static frontend..."
+php -S "$HOST:$PORT" -t . > /tmp/davidson-lighthouse-server.log 2>&1 &
+
+SERVER_PID=$!
+
+echo "Waiting for frontend..."
+
+READY=false
+
+for attempt in {1..20}; do
+    if curl --fail --silent --output /dev/null "$URL"; then
+        READY=true
+        break
+    fi
+
+    sleep 1
+done
+
+if [ "$READY" != "true" ]; then
+    echo "ERROR: Frontend failed to start."
+    echo
+    echo "Server log:"
+    cat /tmp/davidson-lighthouse-server.log || true
+
+    set_status "FAIL"
+    exit 1
+fi
+
+echo "Frontend ready: $URL"
+echo "Running Lighthouse..."
+
+set +e
+
+lighthouse "$URL" \
+    --output=json \
+    --output-path="$RAW_REPORT" \
+    --chrome-flags="--headless --no-sandbox --disable-gpu"
+
+LIGHTHOUSE_EXIT=$?
+
+set -e
+
+if [ "$LIGHTHOUSE_EXIT" -ne 0 ]; then
+    echo "ERROR: Lighthouse failed with exit code $LIGHTHOUSE_EXIT."
+    set_status "FAIL"
+    exit "$LIGHTHOUSE_EXIT"
+fi
+
+if [ ! -s "$RAW_REPORT" ]; then
+    echo "ERROR: Lighthouse did not create a valid report."
+    set_status "FAIL"
+    exit 1
+fi
+
+echo
+echo "Lighthouse completed successfully."
+echo "Raw report: $RAW_REPORT"
+
+set_status "PASS"