using TMPro;
using UnityEngine;
using UnityEngine.Events;
using UnityEngine.UI;

/// <summary>
/// Class to display user info in the ChangeUserScreen scene
/// </summary>
public class UserCard : MonoBehaviour
{
    /// <summary>
    /// Reference to the userlist
    /// </summary>
    public UserList userList;

    /// <summary>
    /// User to upload info into this card
    /// </summary>
    public User user;

    /// <summary>
    /// Callback to the UpdateSelection in the ChangeUserScreen
    /// </summary>
    public UnityAction selectUser;

    /// <summary>
    /// Callback to the update hte users container in the ChangeUserScreen scene
    /// </summary>
    public UnityAction updateUserCardContainer;

    /// <summary>
    /// Callback to display an error message in the ChangeUserScreen scene
    /// </summary>
    public UnityAction displayError;

    /// <summary>
    /// UI reference to the selectio button
    /// </summary>
    public Button button;

    /// <summary>
    /// UI reference to the avatar
    /// </summary>
    public Image avatar;

    /// <summary>
    /// UI reference to the username
    /// </summary>
    public TMP_Text username;

    /// <summary>
    /// Start is called before the first frame update
    /// </summary>
    void Start()
    {
        avatar.sprite = user.avatar;
        username.text = user.username;
        button.onClick.AddListener(selectUser);
    }

    /// <summary>
    /// Delete the user from the userlist
    /// </summary>
    public void DeleteUser()
    {
        if (userList.DeleteUser(user))
        {
            // User is removed, update and save
            userList.Save();
            updateUserCardContainer();
        }
        else
        {
            // User is not removed, display an error
            displayError();
        }
    }
}