﻿namespace VSPackageInstaller
{
    using System;
    using System.Diagnostics.CodeAnalysis;
    using System.Runtime.InteropServices;
    using Microsoft.VisualStudio;
    using Microsoft.VisualStudio.Shell;
    using SP = VSPackageInstaller.SearchProvider;

    /// <summary>
    /// This is the class that implements the package exposed by this assembly.
    /// </summary>
    /// <remarks>
    /// <para>
    /// The minimum requirement for a class to be considered a valid package for Visual Studio
    /// is to implement the IVsPackage interface and register itself with the shell.
    /// This package uses the helper classes defined inside the Managed Package Framework (MPF)
    /// to do it: it derives from the Package class that provides the implementation of the
    /// IVsPackage interface and uses the registration attributes defined in the framework to
    /// register itself and its components with the shell. These attributes tell the pkgdef creation
    /// utility what data to put into .pkgdef file.
    /// </para>
    /// <para>
    /// To get loaded into VS, the package must be referred by &lt;Asset Type="Microsoft.VisualStudio.VsPackage" ...&gt; in .vsixmanifest file.
    /// </para>
    /// </remarks>
    [PackageRegistration(UseManagedResourcesOnly = true)]
    [InstalledProductRegistration("#110", "#112", "1.0", IconResourceID = 400)] // Info on this package for Help/About
    [Guid(VSPackage.PackageGuidString)]
    [SuppressMessage("StyleCop.CSharp.DocumentationRules", "SA1650:ElementDocumentationMustBeSpelledCorrectly", Justification = "pkgdef, VS and vsixmanifest are valid VS terms")]
    [ProvideSearchProvider(typeof(SP.SearchProvider), "VSPackageInstaller")]
    [ProvideSearchProvider(typeof(VSPackageInstaller.CommandSearchProvider.CommandSearchProvider), "CommandSearchProvider")]
    [ProvideAutoLoad(VSConstants.UICONTEXT.NoSolution_string)]
    public sealed class VSPackage : ExtensionPointPackage
    {
        /// <summary>
        /// VSPackage GUID string.
        /// </summary>
        public const string PackageGuidString = "188410dc-7c4a-4159-886f-e24f9ae4b477";

        public static VSPackage thePackage = null;

        /// <summary>
        /// Initializes a new instance of the <see cref="VSPackage"/> class.
        /// </summary>
        public VSPackage()
        {
            // Inside this method you can place any initialization code that does not require
            // any Visual Studio service because at this point the package object is created but
            // not sited yet inside Visual Studio environment. The place to do all the other
            // initialization is the Initialize method.
            System.Diagnostics.Debug.Assert(thePackage == null);
            thePackage = this;
        }

        #region Package Members

        /// <summary>
        /// Initialization of the package; this method is called right after the package is sited, so this is the place
        /// where you can put all the initialization code that rely on services provided by VisualStudio.
        /// </summary>
        protected override void Initialize()
        {
            base.Initialize();

            // Start process of initialization. The CacheManager instance is provided
            // synchronously, but actual population or loading of the cache happens
            // asynchronously in a fire and forget fashion. If the cache population is
            // in progress at search time, we simply search the set of available results.
            // TODO: if we drop support for VS 2015, switch to AsyncExtensionPointPackage.
            SP.SearchProvider.EnsureInitializedFireAndForget();
        }

        #endregion
    }
}
