/*
 * Process Hacker -
 *   Settings API
 *
 * Copyright (C) 2011 wj32
 * Copyright (C) 2011 dmex
 *
 * This file is part of Process Hacker.
 *
 * Process Hacker is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * Process Hacker is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with Process Hacker.  If not, see <http://www.gnu.org/licenses/>.
 */

using System;

using ProcessHacker.Native;

namespace ProcessHacker.Api
{
    public static unsafe class PluginSettings
    {
        public struct Setting
        {
            public PhSettingType Type;
            public string Name;
            public string DefaultValue;
        }

        public static void AddSettings(Setting[] settings)
        {
            PhSettingCreate* create = stackalloc PhSettingCreate[settings.Length];

            for (int i = 0; i < settings.Length; i++)
            {
                create[i].Type = settings[i].Type;
                create[i].Name = (void*)NativeApi.StringToNativeUni(settings[i].Name);
                create[i].DefaultValue = (void*)NativeApi.StringToNativeUni(settings[i].DefaultValue);
            }

            NativeApi.PhAddSettings(create, settings.Length);
        }

        public static int GetIntegerSetting(string name)
        {
            return NativeApi.PhGetIntegerSetting(name);
        }

        public static PhIntegerPair GetIntegerPairSetting(string name)
        {
            return NativeApi.PhGetIntegerPairSetting(name);
        }

        public static string GetStringSetting(string name)
        {
            try
            {
                PhString* value = NativeApi.PhGetStringSetting(name);
                string newValue = value->Text;

                value->Dispose();

                return newValue;
            }
            catch (Exception)
            {
                return string.Empty;
            }
        }

        public static void SetIntegerSetting(string name, int value)
        {
            NativeApi.PhSetIntegerSetting(name, value);
        }

        public static void SetIntegerPairSetting(string name, PhIntegerPair value)
        {
            NativeApi.PhSetIntegerPairSetting(name, value);
        }

        public static void SetStringSetting(string name, string value)
        {
            string setting = GetStringSetting(name);

            if (string.IsNullOrEmpty(setting))
                throw new ApplicationException("Unable to set non-existent setting.");

            NativeApi.PhSetStringSetting(name, value);
        }
    }
}