using Babushka.scripts.CSharp.Common.Savegame;
using Godot;
using Godot.Collections;

namespace Babushka.scripts.CSharp.Low_Code.Variables;

public partial class SaveableVariableNode : VariableNode, ISaveable
{
    [Export] private bool _debug;

    [Signal]
    public delegate void OnLoadingCompleteEventHandler();

    public override void _EnterTree()
    {
        LoadFromSaveData();
        ValueChanged += UpdateSaveData;
        SavegameService.OnSaveGameReset += SaveGameReset;
    }

    private void SaveGameReset()
    {
        Payload = default;
        GD.Print($"Saveable Variable reset to {Payload}");
    }

    public override void _ExitTree()
    {
        ValueChanged -= UpdateSaveData;
        SavegameService.OnSaveGameReset -= SaveGameReset;
    }

    public void UpdateSaveData()
    {
        var payloadData = new Dictionary<string, Variant>
        {
            { "payload", Payload },
        };
        
        string id = GetMeta("SaveID").AsString();
        SavegameService.AppendDataToSave( id, payloadData);
    }

    public void LoadFromSaveData()
    {
        string id = GetMeta("SaveID").AsString(); 
        Dictionary<string, Variant> save = SavegameService.GetSaveData(id);
        if (save.Count > 0)
        {
            if (Payload.VariantType == Variant.Type.Int)
            {
                Payload = save["payload"].AsInt32();
                
            }
            else
            {
                Payload = save["payload"];
            }

            if (_debug)
            {
                GD.Print($"SaveableVariable {Name} loaded payload: {Payload}.");
            }
        }

        EmitSignal(SignalName.OnLoadingComplete);
    }
}