nix/home-manager/hosts/nixos-laptop/desktops/hyprland/gruvbox/waybar/scripts/waybar-scripts.nix

{...}: {
    home.file = {
        ".config/waybar/scripts/tailscale.sh" = {
            enable = true;
            executable = true;
            text = ''
                #!/usr/bin/env bash
                CLASS=`tailscale status --json | jq -r '.BackendState'`
                # Known values:  Running, Stopped

                # Expected Output:
                # {"text": "$text", "alt": "$alt", "tooltip": "$tooltip", "class": "$class", "percentage": $percentage }
                # Different $Class depending on if TS is running or not
                if [ $CLASS == "Running" ]; then
                    IP=`tailscale status --json | jq -r '.TailscaleIPs[0]'`
                    ALT="IP:  $IP"
                    printf '{"class": %s", "alt": %s}' "$CLASS", "$ALT"
                fi
                if [ $CLASS == "Stopped" ]; then
                    ALT="Tailscale is not running"
                    printf '{"class": %s", "alt": %s}' "$CLASS", "$ALT"
                fi
            '';
        };
    };
}