using System;
using System.IO;
using System.Text;
using System.Xml.Serialization;

namespace TBF
{
    /// <summary>
    /// Class to be serialized to an XML file...
    /// Public members are local settings.
    /// These settings are modified by dialogs invoked by menu items
    ///   Edit->Preferences ... PreferencesDlg ... S1.1(language, etc. local settings), and
    ///   Edit->Advanced settings ... AdvancedSettingsDlg ... S1.2(spec. where bench settings are stored)
    /// </summary>
    [XmlRootAttribute("TestBenchFramework")]
    public class LocalSettings
    {
        /// <summary>
        /// Available languages.
        /// Method ToString should give a supported culture info string:
        /// ("en","de","fr","es","it","cn", etc.).
        /// </summary>
        public enum Languages
        {
            en,
            de,
            sk,
            Count,
        }

        /// <summary>
        /// User interface language ("en","de","fr","es","it","cn", etc.).
        /// </summary>
        public string Language = "en";

        /// <summary>
        /// Names and database settings of test benches.
        /// </summary>
        [XmlArrayAttribute("TestBenches")]
        public DatabaseSettings[] testBenches;

        [XmlIgnore]
        public DatabaseSettings[] TestBenches { get { return testBenches; } }

        [XmlIgnore]
        public int BenchesCount { get { return testBenches != null ? testBenches.GetLength(0) : 0; } }

        /// <summary>
        /// Currently selected bench name (local or remote) or null (= no selection done).
        /// </summary>
        [XmlElementAttribute("LastBench")]
        public string LastBenchName;

        /// <summary>
        /// Currently selected procedure name or null (= no selection done yet).
        /// </summary>
        [XmlElementAttribute("LastProcedure")]
        public string LastProcedureName;

		public int RightPaneHorizSplitterDistance;

		public Forms.ResultsConfig.Meters ResultsConfigMeters;
		public Forms.ResultsConfig.TestsAre ResultsConfigTests;

        /// <summary>
        /// Copy public fields from a LocalSettings object to this object.
        /// </summary>
        /// <param name="ls">Origin</param>
        public void Assign(LocalSettings ls)
        {
            if (ls != null)
            {
                Language = ls.Language;
                testBenches = new DatabaseSettings[ls.testBenches.Length];
				for (int i = 0; i < testBenches.Length; i++) testBenches[i] = ls.testBenches[i];
                LastBenchName = ls.LastBenchName;
                LastProcedureName = ls.LastProcedureName;
				RightPaneHorizSplitterDistance = ls.RightPaneHorizSplitterDistance;
				ResultsConfigMeters = ls.ResultsConfigMeters;
				ResultsConfigTests = ls.ResultsConfigTests;
            }
        }

        [XmlIgnore]
        public readonly bool AlwaysAskPasswdWhenUnlocking;

        [XmlIgnore]
        public readonly bool RestoreUserWhenLeavingDialog;
            

        public LocalSettings()
        {
            AlwaysAskPasswdWhenUnlocking = false;
            RestoreUserWhenLeavingDialog = true;
        }

        /// <summary>
        /// Load public fields of this class from the XML file.
        /// </summary>
        public void Load()
        {
            try
            {
				using (TextReader reader = new StreamReader(Program.LocalSettingsFileName))
                {
                    LocalSettings ls = (new XmlSerializer(typeof(LocalSettings))).Deserialize(reader) as LocalSettings;
                    // Copy the settings just in case De-serialize() completes OK
                    this.Assign(ls);
                }
            }
            catch (Exception e)
            {
                string msg = e.Message;
            }
        }

        /// <summary>
        /// Save public fields of this class to the XML file.
        /// </summary>
        public void Save()
        {
            try
            {
				using (TextWriter writer = new StreamWriter(Program.LocalSettingsFileName))
                {
                    (new XmlSerializer(typeof(LocalSettings))).Serialize(writer, this);
                }
            }
            catch (Exception e)
            {
                string msg = e.Message;
            }
        }
    }
}