/* 
 * Copyright (c) 2009 Craig Sutherland
 * 
 * Permission is hereby granted, free of charge, to any person
 * obtaining a copy of this software and associated documentation
 * files (the "Software"), to deal in the Software without
 * restriction, including without limitation the rights to use,
 * copy, modify, merge, publish, distribute, sublicense, and/or sell
 * copies of the Software, and to permit persons to whom the
 * Software is furnished to do so, subject to the following
 * conditions:
 * 
 * The above copyright notice and this permission notice shall be
 * included in all copies or substantial portions of the Software.
 * 
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
 * OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
 * HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
 * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
 * OTHER DEALINGS IN THE SOFTWARE.
 */

using System;
using System.Collections.Generic;
using System.IO;
using System.Linq;
using System.Text;
using System.Xml;
using System.Xml.Serialization;
using FastForward.WinCore.Configuration;
using FastForward.WinCore;

namespace FastForward.Monitor
{
    /// <summary>
    /// The configuration for the monitor application.
    /// </summary>
    [XmlRoot("Application")]
    public class ApplicationConfig
    {
        #region Constructors
        /// <summary>
        /// Initialise a new <see cref="ApplicationConfig"/>.
        /// </summary>
        public ApplicationConfig()
        {
            Servers = new List<ServerConfig>();
            Monitor = new MonitorDisplayConfig();
            BuildTemplates = new List<BuildTemplateConfig>();
            DefaultPluginLocation = Path.Combine(AppDomain.CurrentDomain.BaseDirectory, "Plugins");
            LoadedPlugins = new List<PluginConfig>();
            ConfiguredWindows = new List<WindowConfig>();
        }
        #endregion

        #region Public properties
        #region FileName
        /// <summary>
        /// The file name the configuration was loaded from.
        /// </summary>
        [XmlIgnore]
        public string FileName { get; private set; }
        #endregion

        #region Monitor
        /// <summary>
        /// The UI configuration.
        /// </summary>
        [XmlElement]
        public MonitorDisplayConfig Monitor { get; set; }
        #endregion

        #region Servers
        /// <summary>
        /// The configuration of the servers.
        /// </summary>
        [XmlElement("Server")]
        public List<ServerConfig> Servers { get; set; }
        #endregion

        #region BuildTemplates
        /// <summary>
        /// The available build templates.
        /// </summary>
        [XmlElement("BuildTemplate")]
        public List<BuildTemplateConfig> BuildTemplates { get; set; }
        #endregion

        #region DefaultPluginLocation
        /// <summary>
        /// Gets or sets the default plug-in location.
        /// </summary>
        [XmlElement("PluginLocation")]
        public string DefaultPluginLocation { get; set; }
        #endregion

        #region LoadedPlugins
        /// <summary>
        /// The configured plugins.
        /// </summary>
        [XmlElement("Plugin")]
        public List<PluginConfig> LoadedPlugins { get; set; }
        #endregion

        #region ConfiguredWindows
        /// <summary>
        /// Gets the configured windows.
        /// </summary>
        [XmlElement("Window")]
        public List<WindowConfig> ConfiguredWindows { get; set; }
        #endregion
        #endregion

        #region Public methods
        #region Load()
        /// <summary>
        /// Load the configuration from the default location.
        /// </summary>
        /// <returns></returns>
        public static ApplicationConfig Load()
        {
            var path = Path.Combine(Environment.GetFolderPath(Environment.SpecialFolder.ApplicationData),
                Path.Combine("FastForward.NET", "MonitorConfig.xml"));
            return Load(path);
        }

        /// <summary>
        /// Load the configuration from a file.
        /// </summary>
        /// <returns></returns>
        public static ApplicationConfig Load(string fileName)
        {
            using (Trace.Start("Loading configuration from " + fileName))
            {
                ApplicationConfig value = null;
                if (File.Exists(fileName))
                {
                    using (var file = File.OpenRead(fileName))
                    {
                        using (var reader = XmlReader.Create(file))
                        {
                            var serialiser = new XmlSerializer(typeof(ApplicationConfig));
                            try
                            {
                                value = serialiser.Deserialize(reader) as ApplicationConfig;
                            }
                            catch
                            {
                                // Ignore any errors in the configuration
                                value = new ApplicationConfig();
                            }
                        }
                    }
                }
                else
                {
                    value = new ApplicationConfig();
                }
                value.FileName = fileName;
                return value;
            }
        }
        #endregion

        #region Save()
        /// <summary>
        /// Save the configuration back to the original file.
        /// </summary>
        public void Save()
        {
            Save(FileName);
        }

        /// <summary>
        /// Save the configuration to a new file.
        /// </summary>
        public void Save(string fileName)
        {
            var directory = Path.GetDirectoryName(fileName);
            if (!Directory.Exists(directory)) Directory.CreateDirectory(directory);
            using (var file = File.Create(fileName))
            {
                var settings = new XmlWriterSettings
                {
                    CheckCharacters = true,
                    ConformanceLevel = ConformanceLevel.Document,
                    Encoding = UTF8Encoding.UTF8,
                    Indent = true,
                    NewLineHandling = NewLineHandling.Entitize,
                    OmitXmlDeclaration = false,
                };
                using (var writer = XmlWriter.Create(file, settings))
                {
                    var serialiser = new XmlSerializer(typeof(ApplicationConfig));
                    serialiser.Serialize(writer, this);
                }
            }
        }
        #endregion

        #region Clone()
        /// <summary>
        /// Clone these application settings.
        /// </summary>
        /// <returns></returns>
        public ApplicationConfig Clone()
        {
            var clone = new ApplicationConfig
            {
                FileName = FileName,
                Monitor = Monitor.Clone()
            };
            foreach (var server in Servers)
            {
                clone.Servers.Add(server.Clone());
            }
            foreach (var template in BuildTemplates)
            {
                clone.BuildTemplates.Add(template.Clone());
            }
            foreach (var plugin in LoadedPlugins)
            {
                clone.LoadedPlugins.Add(plugin.Clone());
            }

            return clone;
        }
        #endregion

        #region FindPlugin()
        /// <summary>
        /// Attempt to find a plugin.
        /// </summary>
        /// <param name="key"></param>
        /// <returns></returns>
        public PluginConfig FindPlugin(string key)
        {
            var plugin = (from record in this.LoadedPlugins
                          where key == record.Key
                          select record).SingleOrDefault();
            return plugin;
        }
        #endregion
        #endregion
    }
}