dev.sh

#!/bin/bash
# Live-reload development server for teavm-react
# Usage: ./dev.sh [port]
#
# Performs an initial build, then starts a dev server that watches for
# source changes, recompiles automatically, and live-reloads the browser.
# Edit files in your favourite editor — the browser updates on save.
#
# Optimizations:
#   - Uses mvnd (Maven Daemon) if available, falls back to mvn
#   - Activates 'dev' profile: incremental TeaVM, no source maps/debug info
#   - Smart rebuild: only recompiles modules whose source changed
#   - Fast path: HTML/CSS-only changes skip Maven entirely

set -e

PORT="${1:-8080}"
PROJECT_DIR="$(cd "$(dirname "$0")" && pwd)"
WEBAPP_DIR="$PROJECT_DIR/teavm-react-demo/target/webapp"

# Prefer mvnd if available
MVN="mvn"
if command -v mvnd &>/dev/null; then
    MVN="mvnd"
    echo "Using Maven Daemon (mvnd) for faster builds"
fi

echo "=== teavm-react dev server ==="
echo ""

# ── Initial build ──────────────────────────────────────────────────────
echo "Running initial build..."
$MVN -f "$PROJECT_DIR/pom.xml" install -N -q 2>/dev/null
$MVN -f "$PROJECT_DIR/pom.xml" install -pl teavm-react-core,teavm-react-kotlin -q -DskipTests -T 1C 2>/dev/null
$MVN -f "$PROJECT_DIR/teavm-react-demo/pom.xml" process-classes -q -Pdev

if [ ! -f "$WEBAPP_DIR/js/classes.js" ]; then
    echo "ERROR: Initial build did not produce classes.js"
    exit 1
fi

JS_SIZE=$(wc -c < "$WEBAPP_DIR/js/classes.js")
echo "Initial build complete. Generated JS: ${JS_SIZE} bytes"
echo ""

# ── Launch dev server ──────────────────────────────────────────────────
echo "Starting dev server on http://localhost:$PORT"
echo "Live-reload is active — edit source files and save to see changes."
echo "Press Ctrl+C to stop."
echo ""

exec java --enable-preview --source 21 "$PROJECT_DIR/DevServer.java" "$PORT"