Neovim Update Method

nvim-update() {
    local build=${1:-nightly}
    local current=$(pwd)
    local nvim_dir=$HOME/.neovim
    local stow_dir=$HOME/stow-dotfiles
    local stow_dir_hidden=$HOME/.stow-dotfiles
    local directory=""
    local filename=""
    local target=""

    echo "One moment..."
    
    # Check if neovim is installed and compare versions
    if command -v nvim > /dev/null; then
        local nvim_version=$(nvim -v | cut -d' ' -f2 | head -n1)
        if [[ "$nvim_version" != "$build" ]]; then
            echo "You requested a different Neovim version ($build)"
            echo "The current version ($nvim_version) will be replaced."
            rm -rf "$nvim_dir"
        else
            echo "You already have the current Neovim version: $nvim_version"
            return 0
        fi
    else
        echo "A new version of Neovim will be installed: $build"
    fi

    # Make the neovim directory
    echo "Fetching neovim if necessary..."
    mkdir -p "$nvim_dir"
    cd "$nvim_dir" || { echo "Failed to change directory to $nvim_dir"; return 1; }

    # Determine correct release URL
    local URL1="https://github.com/neovim/neovim/releases/download/$build/nvim-linux-x86_64.tar.gz"
    local URL2="https://github.com/neovim/neovim/releases/download/$build/nvim-linux64.tar.gz"
    
    if curl -Ifs "$URL1" > /dev/null; then
        echo "Download succeeded from primary neovim URL."
        target=$URL1
        directory="nvim-linux-x86_64"
    elif curl -Ifs "$URL2" > /dev/null; then
        echo "Download succeeded from fallback neovim URL."
        target=$URL2
        directory="nvim-linux64"
    else
        echo "Both neovim URLs failed."
        return 1
    fi
    
    filename="$directory.tar.gz"

    # Check if the file exists and is older than 1 day
    if [ ! -f "$filename" ] || [ "$(find "$filename" -mtime +0 2>/dev/null)" ]; then
        echo "Downloading Neovim..."
        rm -rf "$directory" "$filename"
        curl -LO "$target" || { echo "Download failed"; return 1; }
        tar -xzf "$filename" || { echo "Extraction failed"; return 1; }
    else
        echo "Neovim is up-to-date"
    fi

    # Update dotfiles from the appropriate directory
    echo "Pulling stow-dotfiles..."
    
    local dotfiles_dir=""
    if [ -d "$stow_dir" ]; then
        dotfiles_dir="$stow_dir"
    elif [ -d "$stow_dir_hidden" ]; then
        dotfiles_dir="$stow_dir_hidden"
    else
        echo "Stow dotfiles directory not found"
        cd "$current" || return 1
        return 1
    fi
    
    cd "$dotfiles_dir" || { echo "Failed to change directory to $dotfiles_dir"; return 1; }
    
    # Check and reset lazy-lock.json if it exists
    local lazy_lock="$dotfiles_dir/nvim/.config/nvim/lazy-lock.json"
    if [ -f "$lazy_lock" ]; then
        git checkout "$lazy_lock"
    fi

    # Update neovim plugins
    local pull_output
    pull_output=$(git pull -v)
    echo "$pull_output"
    
    if [[ "$pull_output" != *"Already up to date."* ]]; then
        echo "Updating neovim plugins..."
        nvim --headless "+Lazy! update" +UpdateRemotePlugins +TSUpdate +qa
        echo "Update complete!"
        exec zsh
    else
        echo "All good, no updates are necessary!"
    fi
    
    cd "$current" || return 1
}