using System;
using Wasmtime;

namespace HelloExample
{
    class Host : IHost
    {
        public Instance Instance { get; set; }

        [Import("log")]
        public void Log(int address, int length)
        {
            var message = Instance.Externs.Memories[0].ReadString(address, length);
            Console.WriteLine($"Message from WebAssembly: {message}");
        }
    }

    class Program
    {
        static void Main(string[] args)
        {
            using var engine = new Engine();
            using var store = engine.CreateStore();
            using var module = store.CreateModule("memory.wasm");
            using dynamic instance = module.Instantiate(new Host());

            instance.run();
        }
    }
}