#!/usr/bin/env bash
set -euo pipefail

# NextWorkspace Deploy — clean-slate deployment
HEALTH_CHECK_RETRIES=10
HEALTH_CHECK_INTERVAL=2

REPO_DIR="/opt/NextWks"
TARGET_DIR="/opt/nextworkspace"
SERVICE_NAME="nextworkspace"
BINARY_NAME="nextworkspace"

echo "=== NextWorkspace Deploy ==="

# 1. Navigate to repo and pull latest
cd "$REPO_DIR"
echo "[1/8] Pulling latest code..."
git pull

# 2. Build
echo "[2/8] Building binary..."
export PATH=$PATH:/usr/local/go/bin
go build -o "$BINARY_NAME" .

# 3. Remove old deployment
echo "[3/8] Removing old deployment..."
rm -rf "$TARGET_DIR"

# 4. Create target directories
echo "[4/8] Creating target directories..."
mkdir -p "$TARGET_DIR/app/data"
mkdir -p "$TARGET_DIR/app/static"

# 5. Copy binary
echo "[5/8] Copying binary..."
cp "$BINARY_NAME" "$TARGET_DIR/$BINARY_NAME"

# 6. Write systemd service
echo "[6/8] Writing systemd service..."
cat > /etc/systemd/system/$SERVICE_NAME.service <<UNIT
[Unit]
Description=NextWorkspace
After=network.target

[Service]
Environment=PORT=80
ExecStart=$TARGET_DIR/$BINARY_NAME
WorkingDirectory=$TARGET_DIR
Restart=always
User=root
Group=root

[Install]
WantedBy=multi-user.target
UNIT

# 7. Reload systemd and restart
echo "[7/8] Reloading systemd and restarting service..."
systemctl daemon-reload
systemctl enable $SERVICE_NAME
systemctl restart $SERVICE_NAME

# 8. Health check
echo "[8/8] Running health check..."
for i in $(seq 1 $HEALTH_CHECK_RETRIES); do
	if curl -sf http://localhost:80/ > /dev/null 2>&1; then
		echo "[OK] NextWorkspace is serving on http://localhost:80/"
		exit 0
	fi
	echo "  Attempt $i/$HEALTH_CHECK_RETRIES — not ready yet..."
	sleep $HEALTH_CHECK_INTERVAL
done

echo "[FAIL] Health check failed — service did not respond on port 80"
exit 1