//#define ENABLE_LOAD_SETTINGS // when present will enable calls to LoadSettings()
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Reflection;
using System.Configuration;
using System.Xml.Serialization;
using System.IO;
using System.Collections;
using System.Security.Policy;
using System.Security.Cryptography;
using System.Windows.Forms;
using System.Diagnostics;

namespace RomCheater.UserSettingsSupport
{
    public sealed class SettingSubscriber
    {
        public SettingSubscriber() { }          
        //public void AddSubscriber(System.Configuration.ApplicationSettingsBase settings) { AddSubscriber(null, settings); }
        public void AddSubscriber(object consumer, System.Configuration.ApplicationSettingsBase ownersettings)
        {
            this.OwnerSettings = ownersettings;

            if (this.OwnerSettings == null)
            {
                throw new ArgumentNullException("ownersettings", "ownersettings cannot be null");
            }

            this.Consumer = consumer;
            LoadSettings();
            this.UpgradeSettingsIfNeeded();
        }


       
        private object _Consumer;
        /// <summary>
        /// The object that will consume the settings
        /// </summary>
        private object Consumer
        {
            get { return _Consumer; }
            set { _Consumer = value; }
        }


        
        /// <summary>
        /// The Assembly that owns the settings
        /// </summary>
        private Assembly OwningAsembly
        {
            get { return this.OwnerSettings.GetType().Assembly; }
        }
        
        /// <summary>
        /// The Assembly that will consume the settings
        /// </summary>
        private Assembly ConsumerAssembly
        {
            get { return this.Consumer == null ? Assembly.GetExecutingAssembly() : this.Consumer.GetType().Assembly; }
        }

        private System.Configuration.ApplicationSettingsBase _OwnerSettings;
        public System.Configuration.ApplicationSettingsBase OwnerSettings
        {
            get { return _OwnerSettings; }
            private set { _OwnerSettings = value; }
        }

        /// <summary>
        /// Indicates if the consumer is the owning assemlby of the settings
        /// If the value is false, then the settings are being accessed remotely
        /// </summary>
        private bool IsOwningAssembly
        {
            get { return this.ConsumerAssembly == this.OwningAsembly; }
        }

        //private Configuration _config = null;

        #region LoadSettings()
        [Conditional("ENABLE_LOAD_SETTINGS")]
        private void LoadSettings()
        {
            //if (!this.IsOwningAssembly)
            //{
            //    //// we need to read the settings in 
            //    ////string ConfigFile = ConfigurationManager.OpenExeConfiguration(ConfigurationUserLevel.PerUserRoamingAndLocal).FilePath;
            //    ////string ConfigFile = ConfigurationManager.OpenExeConfiguration(SettingsAssmebly.Location).FilePath;
            //    //string path = string.Empty;
            //    //string profile_dir = Environment.GetEnvironmentVariable("LocalAppData");
            //    //string company_name = ((AssemblyCompanyAttribute)Attribute.GetCustomAttribute(this.OwningAsembly, typeof(AssemblyCompanyAttribute), false)).Company;
            //    //string app_fullname = new FileInfo(this.OwningAsembly.Location).Name;
            //    //string evidence_type = this.OwningAsembly.GetName().GetPublicKey().Length == 0 ? EVIDENCE_URL : EVIDENCE_STRONGNAME;
            //    //string evidence_hash = "<HASH>";
            //    //string version = this.OwningAsembly.GetName().Version.ToString();
            //    //string config = "user.config";
            //    //StringBuilder builder = new StringBuilder();
            //    //builder.AppendFormat(@"{0}", profile_dir);
            //    //if (company_name != string.Empty)
            //    //{
            //    //    builder.AppendFormat(@"\{0}", company_name.Replace(" ", "_"));
            //    //}
            //    //builder.AppendFormat(@"\{0}", app_fullname);
            //    //builder.AppendFormat(@"_{0}", evidence_type);
            //    //builder.AppendFormat(@"_{0}", evidence_hash);
            //    //builder.AppendFormat(@"\{0}", version);
            //    //builder.AppendFormat(@"\{0}", config);
            //    //path = builder.ToString();
            //    //#region Hash testing
            //    //Hash owner = new Hash(this.OwningAsembly);
            //    //Hash consumer = new Hash(this.ConsumerAssembly);                
            //    //#endregion
            //IsolatedStoragePath isp1 = new IsolatedStoragePath(this.OwningAsembly);
            //    IsolatedStoragePath isp2 = new IsolatedStoragePath(this.ConsumerAssembly);
            //}
            //else
            //{
            //    string ConfigFile = ConfigurationManager.OpenExeConfiguration(ConfigurationUserLevel.PerUserRoamingAndLocal).FilePath;
            //}
        }
        #endregion

       

        public void UpgradeSettings()
        {
            if (this.OwnerSettings != null)
            {
                this.OwnerSettings.Upgrade();
                return;
            }
            throw new ArgumentNullException("Settings", "Settings cannot be null");
        }

        public void SaveSettings()
        {
            if (this.OwnerSettings != null)
            {
                this.OwnerSettings.Save();
                return;
            }
            throw new ArgumentNullException("Settings", "Settings cannot be null");

        }
        public void ReloadSettings()
        {
            if (this.OwnerSettings != null)
            {
                this.OwnerSettings.Reload();
                return;
            }
            throw new ArgumentNullException("Settings", "Settings cannot be null");
        }
        public void ResetSettings()
        {
            if (this.OwnerSettings != null)
            {
                this.OwnerSettings.Reset();
                return;
            }
            throw new ArgumentNullException("Settings", "Settings cannot be null");
        }
        public void UpgradeSettingsIfNeeded()
        {
            if (this.OwnerSettings != null)
            {
                //SettingCollections.Add(e.Settings);
                foreach (SettingsProperty prop in this.OwnerSettings.Properties)
                {
                    if (prop.Name == "UpgradeRequired")
                    {
                        bool UpgradeRequired = Convert.ToBoolean(this.OwnerSettings[prop.Name]);
                        try
                        {
                            if (UpgradeRequired)
                            {
                                UpgradeSettings();
                                //Settings.Reload();
                                SetValue(prop.Name, false);
                                SaveSettings();
                            }
                        }
                        catch { ResetSettings(); }
                        break;
                    }
                }
            }
            else
            {
                throw new ArgumentNullException("Settings", "Settings cannot be null");
            }
        }
        public void SetValue(string propertyName, object value)
        {
            if (this.OwnerSettings != null)
            {
                try
                {
                    this.OwnerSettings[propertyName] = value;
                }
                catch (Exception ex)
                {
                    throw new KeyNotFoundException(string.Format("Could not find property: '{0}'"), ex);
                }
            }
            else
            {
                throw new ArgumentNullException("Settings", "Settings cannot be null");
            }
        }
        public object GetValue(string propertyName)
        {
            if (this.OwnerSettings != null)
            {
                try
                {
                    return this.OwnerSettings[propertyName];
                }
                catch (Exception ex)
                {
                    throw new KeyNotFoundException(string.Format("Could not find property: '{0}'"), ex);
                }
            }
            else
            {
                throw new ArgumentNullException("Settings", "Settings cannot be null");
            }
        }
    }
}