using System.Reflection;
using Kaitai;


namespace BlendFile;

public class Reader {
    readonly string _path;
    private readonly Dictionary<int, Type> dnaTypes = new();
    
    private List<object> objects = new();
    public List<object> Objects => objects; 
    
    public Reader(string path) {
        _path = path;
        var types = Assembly.GetExecutingAssembly().DefinedTypes;
        foreach (var type in types) {
            var attrib = type.GetCustomAttribute<DNAClassAttribute>();
            if (attrib ==null) continue;
            dnaTypes.Add(attrib.OriginalIndex, type);
        }
    }
    
    public void Read() {
        var file = new KaitaiStream(_path);
        var blend = new Kaitai.BlendFile(file);

        foreach (var block in blend.Blocks) {
            Type t = dnaTypes[(int)block.SdnaIndex];
            var obj = Activator.CreateInstance(t);
            if(obj == null) continue;
            objects.Add(obj);
            
            foreach (var field in t.GetFields()) {
                var attrib = field.GetCustomAttribute<DNAFieldAttribute>();
                if (attrib == null) continue;
                
            }
        }
        
    }
}