using System;
using System.Collections.Generic;
using JD.Kernel.StaticHelpers;

namespace JD.TeaBoxAddinSystem.Addins.Description.FileReferences
{
    /// <summary>
    /// A reference to an assembly.
    /// </summary>
    public class AssemblyFileReference : FileReference
    {
        #region Inner Types

        private class AssemblyResourceFileReferenceCollection : AddinObjectCollection<AssemblyResourceFileReference>
        {
            #region Variables

            private readonly AssemblyFileReference m_owner;

            #endregion

            #region Constructor

            public AssemblyResourceFileReferenceCollection(AssemblyFileReference owner)
            {
                System.Diagnostics.Debug.Assert(owner != null);
                m_owner = owner;
            }

            #endregion

            #region Methods

            protected override void InsertItem(int index, AssemblyResourceFileReference item)
            {                
                base.InsertItem(index, item);
                item.Owner = m_owner;
            }

            protected override void ClearItems()
            {
                foreach (AssemblyResourceFileReference item in this)
                {
                    item.Owner = null;
                }

                base.ClearItems();
            }

            protected override void SetItem(int index, AssemblyResourceFileReference item)
            {
                AssemblyResourceFileReference oldItem = this[index];
                base.SetItem(index, item);
                oldItem.Owner = null;
                item.Owner = m_owner;
            }

            protected override void RemoveItem(int index)
            {
                AssemblyResourceFileReference oldItem = this[index];
                base.RemoveItem(index);
                oldItem.Owner = null;
            }

            #endregion
        }

        #endregion

        #region Variables

        private readonly RuntimeAssembly m_runtime;
        private readonly AssemblyResourceFileReferenceCollection m_resourceFiles;

        #endregion

        #region Constructor

        /// <summary>
        /// Constructor.
        /// </summary>
        /// <param name="assemblyName"></param>
        /// <param name="hintPath"></param>
        public AssemblyFileReference(string assemblyName, string hintPath)
            : base(assemblyName)
        {
            m_runtime = new RuntimeAssembly(assemblyName, hintPath);
            m_resourceFiles = new AssemblyResourceFileReferenceCollection(this);
        }

        /// <summary>
        /// Constructor.
        /// </summary>
        /// <param name="runtime"></param>
        public AssemblyFileReference(RuntimeAssembly runtime)
            : base(runtime == null ? "dummy" : runtime.AssemblyName)
        {
            Throw.IfNull(runtime, "runtime");
            m_runtime = runtime;
            m_resourceFiles = new AssemblyResourceFileReferenceCollection(this);
        }

        #endregion

        #region Properties

        /// <summary>
        /// Runtime associated with this assembly file reference.
        /// </summary>
        public RuntimeAssembly Runtime
        {
            get
            {
                return m_runtime;
            }
        }

        /// <summary>
        /// Resource Files.
        /// </summary>
        public IList<AssemblyResourceFileReference> ResourceFiles
        {
            get
            {
                return m_resourceFiles;
            }
        }

        #endregion

        #region Methods

        internal override void OnModuleChanged(EventArgs e)
        {
            m_resourceFiles.Owner = Module;
            base.OnModuleChanged(e);
        }

        #endregion
    }
}