#region usings

using System;
using System.IO;
using System.Reflection;

#endregion

namespace SM.Utility
{
    /// <summary>
    ///     Contains utility functions for handling with assemblies.
    /// </summary>
    public class AssemblyUtility
    {
        /// <summary>
        ///     Read a file that is saved in a assembly
        /// </summary>
        /// <param name="ass">The assembly that contains the file</param>
        /// <param name="path">The path to the file inside the assembly</param>
        /// <returns></returns>
        public static string ReadAssemblyFile(Assembly ass, string path)
        {
            return new StreamReader(GetAssemblyStream(ass, path)).ReadToEnd();
        }

        /// <summary>
        ///     Read a file that is saved in the calling assembly
        /// </summary>
        /// <param name="path">The path to the file inside the assembly</param>
        /// <returns></returns>
        public static string ReadAssemblyFile(string path)
        {
            return ReadAssemblyFile(Assembly.GetCallingAssembly(), path);
        }


        /// <summary>
        ///     Returns a stream of a requested resource.
        /// </summary>
        /// <param name="ass">The assembly the resource is in.</param>
        /// <param name="path">The path to the resource.</param>
        /// <returns>The stream</returns>
        public static Stream GetAssemblyStream(Assembly ass, string path)
        {
            return ass.GetManifestResourceStream(path) ??
                   throw new InvalidOperationException("Assembly couldn't find resource at path '" + path + "'.");
        }

        /// <summary>
        ///     Returns a stream of a requested resource in the calling assembly.
        /// </summary>
        /// <param name="path">The path to the resource</param>
        /// <returns>The stream</returns>
        public static Stream GetAssemblyStream(string path)
        {
            return GetAssemblyStream(Assembly.GetCallingAssembly(), path);
        }
    }
}