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

namespace Babushka.scripts.CSharp.Common.Farming;

/// <summary>
/// Enables a preset field in the scene sothat it can be used for farming.
/// </summary>
public partial class FieldActivator : Node, ISaveable
{
    [Export] private FieldBehaviour2D _field;
    [Export] private InteractionArea2D _activatorArea;

    private bool _used = false;
    private bool _rakeInHand;
    
    [Signal] public delegate void FieldCreatedEventHandler();

    public override void _Ready()
    {
        LoadFromSaveData();
        ToggleInteractionArea();
    }
    
    /// <summary>
    /// Activates the fieldbehaviour node and sets it to the tilled state.
    /// </summary>
    public void ActivateField()
    {
        if (!_used && _rakeInHand)
        {
            _field.Visible = true;
            _field.UpdateFieldState(FieldState.Tilled);
            EmitSignal(SignalName.FieldCreated, _field);
            _used = true;
            ToggleInteractionArea();
            UpdateSaveData();
        }
    }

    /// <summary>
    /// Reacts to changes in the inventory.
    /// If setup correctly, the field activator interactable should only trigger when using the rake.
    /// </summary>
    /// <param name="activated"></param>
    public void RakeActivated(bool activated)
    {
        if (_used || ProcessMode == ProcessModeEnum.Disabled)
            return;
        _rakeInHand = activated;
        ToggleInteractionArea();
    }
    
    private void ToggleInteractionArea()
    {
        _activatorArea.IsActive = !_used && _rakeInHand;
    }

    public void UpdateSaveData()
    {
        var payloadData = new Dictionary<string, Variant>
        {
            { "field_activator_used", _used }
        };
        
        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 (save.TryGetValue("field_activator_used", out Variant usedVar))
            {
                _used = usedVar.AsBool();
            }
        }
    }
}