#!/bin/bash
#
# Test fresh v4 installation from scratch
# Tests the most common user scenario: clean install using curl | bash
#

set -e

CONTAINER_NAME="nupst-test-fresh-v4"

echo "================================================"
echo "  NUPST Fresh v4 Installation Test"
echo "================================================"
echo ""

# Check if container already exists
if docker ps -a --format '{{.Names}}' | grep -q "^${CONTAINER_NAME}$"; then
  echo "⚠️  Container ${CONTAINER_NAME} already exists"
  read -p "Remove and recreate? (y/N): " -n 1 -r
  echo
  if [[ $REPLY =~ ^[Yy]$ ]]; then
    echo "→ Stopping and removing existing container..."
    docker stop ${CONTAINER_NAME} 2>/dev/null || true
    docker rm ${CONTAINER_NAME} 2>/dev/null || true
  else
    echo "Exiting. Remove manually with: docker rm -f ${CONTAINER_NAME}"
    exit 1
  fi
fi

echo "→ Creating Docker container with systemd..."
docker run -d \
  --name ${CONTAINER_NAME} \
  --privileged \
  --cgroupns=host \
  -v /sys/fs/cgroup:/sys/fs/cgroup:rw \
  ubuntu:22.04 \
  /bin/bash -c "apt-get update && apt-get install -y systemd systemd-sysv && exec /sbin/init"

echo "→ Waiting for systemd to initialize..."
sleep 10

echo "→ Waiting for dpkg lock to be released..."
docker exec ${CONTAINER_NAME} bash -c "
  while fuser /var/lib/dpkg/lock-frontend >/dev/null 2>&1; do
    echo '  Waiting for dpkg lock...'
    sleep 2
  done
  echo '  dpkg lock released'
"

echo "→ Installing prerequisites (curl)..."
docker exec ${CONTAINER_NAME} bash -c "
  apt-get update -qq
  apt-get install -y -qq curl
"

echo ""
echo "→ Installing NUPST v4 using curl | bash..."
echo "   Command: curl -sSL https://code.foss.global/serve.zone/nupst/raw/branch/main/install.sh | bash -s -- -y"
echo ""

docker exec ${CONTAINER_NAME} bash -c "
  curl -sSL https://code.foss.global/serve.zone/nupst/raw/branch/main/install.sh | bash -s -- -y
"

echo ""
echo "================================================"
echo "  Verifying Installation"
echo "================================================"
echo ""

echo "→ Checking binary location..."
docker exec ${CONTAINER_NAME} bash -c "
  if [ -f /opt/nupst/nupst ]; then
    echo '  ✓ Binary exists at /opt/nupst/nupst'
    ls -lh /opt/nupst/nupst
  else
    echo '  ✗ Binary not found at /opt/nupst/nupst'
    exit 1
  fi
"

echo ""
echo "→ Checking symlink..."
docker exec ${CONTAINER_NAME} bash -c "
  if [ -L /usr/local/bin/nupst ]; then
    echo '  ✓ Symlink exists at /usr/local/bin/nupst'
    ls -lh /usr/local/bin/nupst
  elif [ -L /usr/bin/nupst ]; then
    echo '  ✓ Symlink exists at /usr/bin/nupst'
    ls -lh /usr/bin/nupst
  else
    echo '  ✗ Symlink not found in /usr/local/bin or /usr/bin'
    exit 1
  fi
"

echo ""
echo "→ Checking PATH integration..."
docker exec ${CONTAINER_NAME} bash -c "
  NUPST_PATH=\$(which nupst 2>/dev/null)
  if [ -n \"\$NUPST_PATH\" ]; then
    echo '  ✓ nupst found in PATH at: '\$NUPST_PATH
  else
    echo '  ✗ nupst not found in PATH'
    echo '  PATH contents:'
    echo \$PATH
    exit 1
  fi
"

echo ""
echo "→ Testing nupst command execution..."
docker exec ${CONTAINER_NAME} nupst --version

echo ""
echo "→ Creating minimal config for service test..."
docker exec ${CONTAINER_NAME} bash -c "
  mkdir -p /etc/nupst
  cat > /etc/nupst/config.json << 'EOF'
{
  \"version\": \"4.0\",
  \"upsDevices\": [],
  \"groups\": [],
  \"checkInterval\": 30000
}
EOF
  echo '  ✓ Minimal config created'
"

echo ""
echo "→ Testing service creation..."
docker exec ${CONTAINER_NAME} bash -c "
  echo '  Running: nupst service enable'
  nupst service enable

  if [ -f /etc/systemd/system/nupst.service ]; then
    echo '  ✓ Service file created successfully'
  else
    echo '  ✗ Service file creation failed'
    exit 1
  fi
"

echo ""
echo "→ Checking if service is enabled..."
docker exec ${CONTAINER_NAME} systemctl is-enabled nupst

echo ""
echo "================================================"
echo "  ✓ Fresh v4 Installation Test Complete"
echo "================================================"
echo ""
echo "Installation verified successfully:"
echo "  • Binary installed to /opt/nupst/nupst"
echo "  • Symlink created for global access"
echo "  • nupst command available in PATH"
echo "  • Command executes correctly"
echo "  • Systemd service file created"
echo ""
echo "Useful commands:"
echo "  docker exec -it ${CONTAINER_NAME} bash"
echo "  docker exec ${CONTAINER_NAME} nupst --help"
echo "  docker exec ${CONTAINER_NAME} nupst service status"
echo "  docker stop ${CONTAINER_NAME}"
echo "  docker rm -f ${CONTAINER_NAME}"
echo ""