#!/bin/bash

# TODO: Add uninstall to readme

# Just double check, check /opt/vigil exists, then remove it, also check+remove systemd service, remove aliases from bashrc and also dont offer but notify that dependencies not uninstalled

# Check if vigil is installed, if not then exit
if [[ ! -d "/opt/vigil" ]]; then
   echo "Vigil is not installed. Exiting." 1>&2
   exit 1
fi

# Check if we are running as root
if [[ $EUID -ne 0 ]]; then
   echo "This script must be run as root" 1>&2
   exit 1
fi

# Get the actual user (not root) for later use
ACTUAL_USER=${SUDO_USER:-$USER}
USER_HOME=$(eval echo ~$ACTUAL_USER)

# Now check if we are running on a supported system
if [[ "$OSTYPE" != "linux-gnu"* ]]; then
   echo "This script is only supported on Linux" 1>&2
   exit 1
fi

# Warning and countdown
echo "WARNING: This will remove /opt/vigil and any related data."
echo "Press Ctrl+C to cancel..."
echo ""

for i in 5 4 3 2 1; do
    echo -n "$i..."
    sleep 1
done
echo ""
echo ""

# Final confirmation
echo "Continue with uninstallation? (y/n)"
read -r answer
if [[ "${answer,,}" != "y" ]]; then
    echo "Uninstallation cancelled."
    exit 0
fi

# Now delete the vigil directory
echo ""
echo "Removing Vigil installation..."
rm -rf /opt/vigil

# Now delete the systemd service (if it exists)
if [[ -f /etc/systemd/system/vigil.service ]]; then
    echo "Removing Vigil systemd service..."
    systemctl stop vigil.service 2>/dev/null
    systemctl disable vigil.service 2>/dev/null
    rm /etc/systemd/system/vigil.service
    systemctl daemon-reload
else
    echo "No systemd service found (skipping)"
fi

# Now delete the aliases from bashrc
echo "Removing Vigil aliases from bashrc..."
if grep -q "alias vigil=" "$USER_HOME/.bashrc" 2>/dev/null; then
    sed -i '/alias vigil=/d' "$USER_HOME/.bashrc"
    echo "Aliases removed from $USER_HOME/.bashrc"
else
    echo "No aliases found in bashrc"
fi

echo ""
echo "Dependencies not uninstalled. Please uninstall them manually if needed: python3, git, pip"
echo "Vigil has been uninstalled successfully."