using System;
using System.Collections.Generic;
using System.Reflection;

namespace MinecraftClient.Scripting;

public static class AssemblyResolver {
    private static Dictionary<string, string> ScriptAssemblies = new();
    static AssemblyResolver() {
        // Manually resolve assemblies that .NET can't resolve automatically.
        AppDomain.CurrentDomain.AssemblyResolve += (sender, args) => 
        {
                var asmReqName = new AssemblyName(args.Name);
                
                // Check the script-referenced assemblies if we have the DLL that is required.
                foreach (var dll in ScriptAssemblies) 
                {
                    // If we have the assembly, load it.
                    if (asmReqName.FullName == dll.Key) 
                    {
                        return Assembly.LoadFile(dll.Value);
                    }
                }

                ConsoleIO.WriteLogLine($"[Script Error] Failed to resolve assembly {args.Name} (are you missing a DLL file?)");
                return null;
            };
    }

    internal static void AddAssembly(string AssemblyFullName, string AssemblyPath) 
    {
        if (ScriptAssemblies.ContainsKey(AssemblyFullName))
            return;
        
        ScriptAssemblies.Add(AssemblyFullName, AssemblyPath);
    }
}