#!/usr/bin/env bash

# Toggle dedicated vs integrated GPU mode via supergfxd (for hybrid gpu laptops, like Asus G14).
# Declarative enablement + Runtime mode switching for Nnomarchy NixOS.

STATE_FILE="/etc/nixos/state.json"

# Check if supergfxd is enabled in config
if [[ $(sudo jq -r '.features.hybridGPU // false' "$STATE_FILE") != "true" ]]; then
    if gum confirm "Hybrid GPU support is not enabled. Enable it now? (Requires sys-update)"; then
        sudo jq ".features.hybridGPU = true" "$STATE_FILE" > /tmp/state.json && sudo mv /tmp/state.json "$STATE_FILE"
        echo "Hybrid GPU support enabled in configuration. Applying changes..."
        sudo sys-update
        echo "Please run this command again after the update."
        exit 0
    fi
    exit 1
fi

if ! command -v supergfxctl &> /dev/null; then
    echo "supergfxctl not found. Is the system updated?"
    exit 1
fi

gpu_mode=$(supergfxctl -g)
echo "Current GPU mode: $gpu_mode"

case "$gpu_mode" in
"Integrated")
  if gum confirm "Switch to Hybrid mode (enables dGPU) and reboot?"; then
    supergfxctl -m Hybrid
    echo "Switching to Hybrid mode..."
    nnomarchy-system-reboot
  fi
  ;;
"Hybrid")
  if gum confirm "Switch to Integrated mode (disables dGPU) and reboot?"; then
    supergfxctl -m Integrated
    echo "Switching to Integrated mode..."
    nnomarchy-system-reboot
  fi
  ;;
*)
  echo "Hybrid GPU in unknown mode: $gpu_mode. Try 'supergfxctl -m Hybrid' manually."
  exit 1
  ;;
esac