using System.Reflection;

namespace PriorityUX {
  static class Utils {
    static readonly string PlayerPrefsKey = "LastUsedPriority";
    static int? lastValue;

    public static PrioritySetting getDefaultPriority() {
      return new PrioritySetting(PriorityScreen.PriorityClass.basic, Options.Instance.resetPriorityLevel);
    }

    static int prioritySettingToInt(PrioritySetting setting) {
      if (setting.priority_class == PriorityScreen.PriorityClass.topPriority)
        return 0;
      return setting.priority_value;
    }

    static PrioritySetting intToPrioritySetting(int v) {
      if (v < 1 || v > 9)
        return new PrioritySetting(PriorityScreen.PriorityClass.topPriority, 1);
      return new PrioritySetting(PriorityScreen.PriorityClass.basic, v);
    }

    public static void setLastPriority(PrioritySetting setting) {
      int value = prioritySettingToInt(setting);
      if (lastValue.HasValue && lastValue.Value == value)
        return;

      Debug.Log("[PriorityUX] >> setLastPriority: " + value);
      KPlayerPrefs.SetInt(PlayerPrefsKey, value);
      lastValue = value;
    }

    public static PrioritySetting getLastPriority() {
      int value = KPlayerPrefs.GetInt(PlayerPrefsKey, -1);
      if (value < 0) {
        Debug.Log("[PriorityUX] >> getLastPriority: <invalid>");
        return  getDefaultPriority();
      } else {
        // Debug.Log("[PriorityUX] >> getLastPriority: " + value);
        return intToPrioritySetting(value);
      }
    }

    public static void refreshPriorityScreen(PriorityScreen screen) {
      screen.SetScreenPriority(Utils.getLastPriority());
    }

    public static void refreshToolMenuPriority() {
      refreshPriorityScreen(ToolMenu.Instance.PriorityScreen);
    }

    // static readonly FieldInfo productInfoScreenField = typeof(BuildMenu).GetField("productInfoScreen", BindingFlags.NonPublic | BindingFlags.Instance);
    // public static ProductInfoScreen? getPlanScreenProductInfoScreen() {
    //   if (BuildMenu.Instance) {
    //     ProductInfoScreen productInfoScreen = (ProductInfoScreen)productInfoScreenField.GetValue(BuildMenu.Instance);
    //     return productInfoScreen;
    //   }
    //   return null;
    // }

    public static PriorityScreen? getPlanPriorityScreen() {
      return PlanScreen.Instance?.ProductInfoScreen?.materialSelectionPanel?.PriorityScreen;
    }
  }
}