#!/bin/bash
set -euo pipefail

echo "============================================"
echo "Neovim Latest Installation Script"
echo "============================================"
echo ""
echo "This script will run the following commands with sudo:"
echo "  - apt-get update (if curl not installed)"
echo "  - apt-get install -y curl (if needed)"
echo "  - rm -rf /opt/nvim-linux64 (if old installation exists)"
echo "  - tar -C /opt -xzf nvim-linux64.tar.gz"
echo ""
read -p "Continue with installation? (y/N) " -n 1 -r
echo
if [[ ! $REPLY =~ ^[Yy]$ ]]; then
    echo "Installation cancelled."
    exit 0
fi

echo ""
echo "Starting installation (commands will be shown as they run)..."
echo ""

# Enable command tracing
set -x

# Check for required tools
if ! command -v curl &> /dev/null; then
    sudo apt-get update
    sudo apt-get install -y curl
fi

# Disable tracing temporarily for cleaner download messages
set +x

# Download latest Neovim
echo "Downloading Neovim..."
TEMP_DIR=$(mktemp -d)
cd "$TEMP_DIR"

if ! curl -fsSL -o nvim-linux64.tar.gz https://github.com/neovim/neovim/releases/latest/download/nvim-linux64.tar.gz; then
    echo "Error: Failed to download Neovim" >&2
    rm -rf "$TEMP_DIR"
    exit 1
fi

echo "Download complete."
set -x

# Remove old installation if it exists
if [ -d /opt/nvim-linux64 ]; then
    sudo rm -rf /opt/nvim-linux64
fi

# Extract to /opt
sudo tar -C /opt -xzf nvim-linux64.tar.gz

set +x

# Clean up
cd - > /dev/null
rm -rf "$TEMP_DIR"

echo ""
echo "============================================"
# Verify installation
if [ -x /opt/nvim-linux64/bin/nvim ]; then
    echo "Neovim installed successfully!"
    /opt/nvim-linux64/bin/nvim --version | head -n1
    echo ""
    echo "Neovim is installed at: /opt/nvim-linux64/bin/nvim"
    echo "Add to PATH by adding this to your ~/.bashrc:"
    echo '  export PATH="$PATH:/opt/nvim-linux64/bin"'
else
    echo "Error: Neovim installation failed" >&2
    exit 1
fi
echo "============================================"