using System;
using System.Collections.Generic;
using System.Data;
using System.Data.SqlClient;
using System.Linq;
using DTS.Common.Interface.GroupTemplate;
using DTS.Common.Storage;
using DTS.Common.Utilities.Logging;

// ReSharper disable CheckNamespace

namespace DTS.Common.ISO
{
    /// <summary>
    /// this class is a wrapper for the group template per the db, it's supposed to be a lighter weight version of concept of a test object template, with no
    /// connection to UI, just serialization and structure
    /// </summary>
    public class TestObjectTemplate : ITestObjectTemplate
    {
        #region Properties
        /// <summary>
        /// name of the test object template, this could be a GUID in the case of embedded test object templates
        /// </summary>
        public string TemplateName { get; set; }
        /// <summary>
        /// a human readable name for the template, for an embedded template this is the original template name, for 
        /// a non embedded template, this is the template name (embedded templates have guids for names)
        /// </summary>
        public string TemplateNameOrOriginalTemplateName => Embedded ? OriginalTemplateName : TemplateName;

        /// <summary>
        /// the icon for the template
        /// </summary>
        public string Icon { get; set; }
        /// <summary>
        /// description for the template
        /// </summary>
        public string Description { get; set; }
        /// <summary>
        /// whether this template is intended to only be used locally or not
        /// </summary>
        public bool LocalOnly { get; set; }
        /// <summary>
        /// the version number of this template [not currently used?]
        /// </summary>
        public int Version { get; set; }
        /// <summary>
        /// last person to modify this template
        /// </summary>
        public string LastModifiedBy { get; set; }
        /// <summary>
        /// when this template was last modified
        /// </summary>
        public DateTime LastModified { get; set; }
        /// <summary>
        /// a CRC32 for the template, but not currently used
        /// original idea was to allow us to not have to check changes in the template, just quickly calculate whether anything has changed
        /// </summary>
        public int CRC32 { get; set; }
        /// <summary>
        /// test object (iso meta field) for this template
        /// </summary>
        public string TestObject { get; set; }
        /// <summary>
        /// test object type (iso meta field) for this template, all channels are of this type ...
        /// </summary>
        public string TestObjectType { get; set; }
        /// <summary>
        /// unsure if this is still used, was originally used to build up templates from sub templates, 
        /// so an ATD could be composed of leg, arm, head, etc
        /// </summary>
        public string TemplateParent { get; set; }
        /// <summary>
        /// unsure, I think this is whether the group is dynamically added or an existing 
        /// </summary>
        public bool SysBuilt { get; set; }

        /// <summary>
        /// all channels for the template
        /// </summary>
        public TestObjectTemplateChannel[] Channels { get; set; }
        /// <summary>
        /// the original template name [if we are embedded we got a new name that was a guid, but we store the old name here for readability purposes]
        /// </summary>
        public string OriginalTemplateName { get; set; }
        /// <summary>
        /// whether this group is embedded in a test setup, or is a user created and living on it's own template
        /// </summary>
        public bool Embedded { get; set; }

        #endregion

        #region Constructors and initializers        

        public bool IsISOMode()
        {
            return !(TestObjectType.Contains(Classes.GroupTemplates.Constants.NON_ISO_TESTOBJECT_CHANNEL_TYPE) ||
              TestObjectType.Contains(TestObjectTemplateChannel.NONISOCHANNELTYPE));
        }
        public TestObjectTemplate(string templateName, bool bLocalOnly)
        {
            Version = 1;
            TemplateName = templateName;
            LocalOnly = bLocalOnly;
            Channels = new TestObjectTemplateChannel[0];
        }
        public TestObjectTemplate(TestObjectTemplate copy, ref ISO13499FileDb db)
        {
            if (copy?.TemplateName != null)
            {
                TemplateName = copy.TemplateName;
            }
            if (copy == null) return;
            LocalOnly = copy.LocalOnly;
            CRC32 = copy.CRC32;
            Description = copy.Description;
            Embedded = copy.Embedded;
            OriginalTemplateName = copy.OriginalTemplateName;
            Icon = copy.Icon;
            LastModified = copy.LastModified;
            LastModifiedBy = copy.LastModifiedBy;
            LocalOnly = copy.LocalOnly;
            SysBuilt = copy.SysBuilt;
            TemplateParent = copy.TemplateParent;
            TestObject = copy.TestObject;
            TestObjectType = copy.TestObjectType;
            Version = copy.Version;
            var lookup = new Dictionary<string, bool>();
            var channels = new List<TestObjectTemplateChannel>();
            foreach (var c in copy.Channels)
            {
                var ch = new TestObjectTemplateChannel(c, this);
                ch.SetTemplate(this);
                channels.Add(ch);
                lookup[$"{c.Channel.Id}x{c.Channel.MMEChannelType}"] = true;
            }
            var possibleChannels = db.GetPossibleChannelsForType(TestObjectType);
            foreach (var pc in possibleChannels)
            {
                var key = $"{pc.Id}x{pc.MMEChannelType}";
                if (lookup.ContainsKey(key)) continue;
                lookup[key] = true;
                var ch = new TestObjectTemplateChannel(pc);
                ch.SetTemplate(this);
                channels.Insert(0, ch);
            }
            AssignOrders(channels);
            Channels = channels.ToArray();
        }

        private void AssignOrders(List<TestObjectTemplateChannel> channels)
        {
            if (!channels.Any()) { return; }
            channels.Sort();
            var maxDisplayOrder = (from ch in channels select ch.DisplayOrder).Max();
            foreach (var ch in channels)
            {
                if (-1 == ch.DisplayOrder)
                {
                    ch.DisplayOrder = ++maxDisplayOrder;
                }
            }
        }
        #endregion Constructors And Initializers


        #region static functions


        public static TestObjectTemplate GetTemplate(ref ISO13499FileDb db, string name)
        {
            return null;
        }

        #endregion
        public override string ToString()
        {
            return TemplateNameOrOriginalTemplateName;
        }
    }
}