#!/usr/bin/env bash
# Start the dev backend (FrankenPHP --watch) and the Qt host together,
# tearing both down on Ctrl-C / exit / SIGTERM via process-group kill.

set -euo pipefail

SCRIPT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
APP_DIR="$(cd "$SCRIPT_DIR/.." && pwd)"
SYMFONY_DIR="$APP_DIR/symfony"
QT_BIN="$APP_DIR/build/qml/todo"

: "${FRANKENPHP:=frankenphp}"
: "${BRIDGE_URL:=http://127.0.0.1:8765}"
: "${BRIDGE_TOKEN:=devtoken}"

if [ ! -x "$QT_BIN" ]; then
    echo "Qt host not built. Run 'make build' first." >&2
    exit 1
fi
if ! command -v "$FRANKENPHP" >/dev/null 2>&1; then
    echo "frankenphp not on PATH. Set FRANKENPHP=/path/to/frankenphp or install it." >&2
    exit 1
fi

# Explicit PID-based teardown: SIGTERM the children, give them 2s,
# then SIGKILL anything still alive. process-group `kill 0` proved
# unreliable when FrankenPHP's --watch fork was reparented.
FRANKEN_PID=""
QT_PID=""
cleanup() {
    trap - EXIT INT TERM
    for pid in "$QT_PID" "$FRANKEN_PID"; do
        [ -n "$pid" ] || continue
        kill -0 "$pid" 2>/dev/null || continue
        kill -TERM "$pid" 2>/dev/null || true
        for _ in 1 2 3 4 5 6 7 8 9 10; do
            kill -0 "$pid" 2>/dev/null || break
            sleep 0.2
        done
        kill -KILL "$pid" 2>/dev/null || true
    done
}
trap cleanup EXIT INT TERM

(cd "$SYMFONY_DIR" && exec "$FRANKENPHP" run --watch --config ../Caddyfile) &
FRANKEN_PID=$!
echo "frankenphp PID=$FRANKEN_PID"

# Wait for the backend to come up. Bail if FrankenPHP dies early.
for _ in $(seq 1 50); do
    if curl -fsS -m 1 "$BRIDGE_URL/healthz" >/dev/null 2>&1; then
        break
    fi
    if ! kill -0 "$FRANKEN_PID" 2>/dev/null; then
        echo "frankenphp died before becoming ready" >&2
        exit 1
    fi
    sleep 0.2
done

BRIDGE_URL="$BRIDGE_URL" BRIDGE_TOKEN="$BRIDGE_TOKEN" "$QT_BIN" &
QT_PID=$!

wait "$QT_PID"