using System;
using System.Collections;
using System.Collections.Generic;
using System.Threading.Tasks;
using Unity.Services.Authentication;
using Unity.Services.Core;
using UnityEngine;

public static class AuthenticationManager
{

    #region Initialization

    /// <summary>
    /// Static method called before scene load to initialize Unity Services and begin authentication flow.
    /// </summary>
    [RuntimeInitializeOnLoadMethod(RuntimeInitializeLoadType.BeforeSceneLoad)]
    private static async void Initialize()
    {
        try
        {
            await UnityServices.InitializeAsync();
        }
        catch (Exception e)
        {
            Debug.LogError(e);
        }
    }

    /// <summary>
    /// Automatically attempts sign-in based on stored provider type after Unity Services initialization.
    /// </summary>

    #endregion

    #region Authentication Flow


    /// <summary>
    /// Attempts to sign in anonymously as a guest account and sets basic user data.
    /// </summary>
    /// <returns>A Task representing the asynchronous operation.</returns>
    public static async Task SigninAnonymously()
    {
        try
        {
            await AuthenticationService.Instance.SignInAnonymouslyAsync();
        }
        catch (Exception e)
        {
            Debug.LogError(e);
        }
    }
    /// <summary>
    /// Attempts to sign in using a username and password. Loads user data from cloud save.
    /// </summary>
    /// <param name="userName">The username of the account.</param>
    /// <param name="password">The password of the account.</param>
    /// <returns>A Task representing the asynchronous operation.</returns>
    public static async Task SigninUsernamePassword(string userName, string password)
    {
        try
        {
            await AuthenticationService.Instance.SignInWithUsernamePasswordAsync(userName, password);
        }
        catch (Exception e)
        {
            Debug.LogError(e);
        }
    }

    /// <summary>
    /// Registers a new account using username, password, email, and province information.
    /// </summary>
    /// <param name="userName">The desired username.</param>
    /// <param name="password">The desired password.</param>
    /// <param name="email">The user's email address.</param>
    /// <param name="provincy">The user's province or region.</param>
    /// <returns>A Task representing the asynchronous operation.</returns>
    public static async Task SignUpUsernamePassword(string userName, string password, string email)
    {
        try
        {
            await AuthenticationService.Instance.SignUpWithUsernamePasswordAsync(userName, password);
        }
        catch (Exception e)
        {
            Debug.LogError(e);
        }
    }

    /// <summary>
    /// Links the current anonymous account to a username/password account by adding credentials and updating user data.
    /// </summary>
    /// <param name="userName">The username to link.</param>
    /// <param name="password">The password to link.</param>
    /// <param name="email">The user's email address.</param>
    /// <param name="provincy">The user's province or region.</param>
    /// <returns>A Task representing the asynchronous operation.</returns>
    public static async Task LinkAccountUsernamePassword(string userName, string password, string email)
    {
        try
        {
            await AuthenticationService.Instance.AddUsernamePasswordAsync(userName, password);
        }
        catch (Exception e)
        {
            Debug.LogError(e);
        }
    }

    #endregion

    #region Utilities

    /// <summary>
    /// Signs out the current user and deletes the anonymous session if applicable.
    /// </summary>
    public static void Signout()
    {
        AuthenticationService.Instance.SignOut(true);
    }

    #endregion
}