using UnityEngine;
using UnityEngine.UI;
using Ashwild.Network;

namespace Ashwild.UI
{
    public class SavePanel : UIPanel
    {
        [Header("Save Slots")]
        [SerializeField] private Button slot1Button;
        [SerializeField] private Button slot2Button;
        [SerializeField] private Button slot3Button;

        [Header("Navigation")]
        [SerializeField] private Button backButton;

        protected override void Awake()
        {
            base.Awake();
            slot1Button.onClick.AddListener(() => LoadGame(0));
            slot2Button.onClick.AddListener(() => LoadGame(1));
            slot3Button.onClick.AddListener(() => LoadGame(2));
            backButton.onClick.AddListener(() => UIManager.Instance.Back());
        }

        /// <summary>
        /// Records the chosen slot and launches a hosted multiplayer session. The game scene
        /// to load is owned by NetworkSessionManager (single source of truth), so it is not
        /// duplicated here.
        /// </summary>
        private void LoadGame(int slotIndex)
        {
            // Future: SaveManager.Instance.Load(slotIndex) before launching.
            GameSession.SelectedSlot = slotIndex;
            GameSession.Mode = GameSession.LaunchMode.Host;

            if (NetworkSessionManager.Instance == null)
            {
                Debug.LogError("[SavePanel] NetworkSessionManager introuvable — la MenuScene doit contenir le NetworkManager.", this);
                return;
            }

            // Hosting brings the server up, then loads the game scene over the network.
            NetworkSessionManager.Instance.HostSession();
        }
    }
}