using System.IO;
using Mono.Cecil;
using Mono.Cecil.Cil;

namespace StardewModdingAPI.Framework.ModLoading.Symbols
{
    /// <summary>Provides assembly symbol writers for Mono.Cecil.</summary>
    internal class SymbolWriterProvider : ISymbolWriterProvider
    {
        /*********
        ** Fields
        *********/
        /// <summary>The default symbol writer provider.</summary>
        private readonly ISymbolWriterProvider DefaultProvider = new DefaultSymbolWriterProvider();

        /// <summary>The symbol writer provider for the portable PDB format.</summary>
        private readonly ISymbolWriterProvider PortablePdbProvider = new PortablePdbWriterProvider();


        /*********
        ** Public methods
        *********/
        /// <summary>Get a symbol writer for a given module and assembly path.</summary>
        /// <param name="module">The loaded assembly module.</param>
        /// <param name="fileName">The assembly name.</param>
        public ISymbolWriter GetSymbolWriter(ModuleDefinition module, string fileName)
        {
            return this.DefaultProvider.GetSymbolWriter(module, fileName);
        }

        /// <summary>Get a symbol writer for a given module and symbol stream.</summary>
        /// <param name="module">The loaded assembly module.</param>
        /// <param name="symbolStream">The loaded symbol file stream.</param>
        public ISymbolWriter GetSymbolWriter(ModuleDefinition module, Stream symbolStream)
        {
            // Not implemented in default native pdb writer, so fallback to portable
            return this.PortablePdbProvider.GetSymbolWriter(module, symbolStream);
        }
    }
}