@page "/login"
@using System.IdentityModel.Tokens.Jwt;
@using System.Security.Claims;
@using Newtonsoft.Json.Linq;
@using System.Text.Json;
@using System.Reflection;
@using TIAMWebApp.Shared.Application.Interfaces;
@using TIAMWebApp.Shared.Application.Models.PageModels;
@using TIAMSharedUI.Pages.Components;
@using TIAMWebApp.Shared.Application.Models.ClientSide;
@using TIAMWebApp.Shared.Application.Models;
@using TIAMWebApp.Shared.Application.Utility;
@using AyCode.Interfaces.StorageHandlers;
@inject NavigationManager navManager
@inject LogToBrowserConsole logToBrowserConsole
@inject IUserDataService userDataService
@inject IJSRuntime jsRuntime
@inject ISecureStorageHandler SecureStorageHandler

<PageTitle>Login</PageTitle>

<div class="wrapper">
    <div class="my-logo">
        <img src="_content/TIAMSharedUI/images/png-logo-0.png" alt="">
    </div>
    <div class="text-center mt-4 name">
        Let's get you inside!
    </div>
    <form class="p-3 mt-3">
        <div>
            @switch (currentStep)
            {
                case 1:
                    <LoginStep1 @bind-LoginModel="loginModel" onLoginNext="GoToNextStep" />
                    ;
                    break;

                case 2:
                    <LoginStep3 @bind-LoginModel="loginModel" onSubmit="SubmitLogin" onPrev="GoToPreviousStep" />
                    ;
                    break;
            }
        </div>


    </form>
    <p>@currentStep</p>
    @{
        if (!loggedIn)
        {

            <div>

                <p>@loginModel.Email</p>

                <p>@loginModel.Password</p>
            </div>
        }
    }
    <div class="text-center fs-6">
        No account yet? <a href="register">Sign up here!</a>
    </div>
</div>

@code {

    LoginModel loginModel = new();

    private int currentStep = 1;

    bool loggedIn = false;


    private void GoToNextStep()
    {
        currentStep++;
    }

    private void GoToPreviousStep()
    {
        currentStep--;
    }

    private async void SubmitLogin()
    {


        currentStep = 1;
        logToBrowserConsole.LogToBC("Login started: " + "Email: " + loginModel.Email + ", Password: " + loginModel.Password);
        var response = await userDataService.AuthenticateUser(loginModel);
        //var response = await UserDataservice.TestUserApi(30);
        logToBrowserConsole.LogToBC("Login started");
        logToBrowserConsole.LogToBC(response);
        if (!string.IsNullOrEmpty(response))
        {
            //get token and save to local storage
            //parse to Mainresponse from json string


            //var Mainresponse = JsonSerializer.Deserialize<MainResponse>(response);
            var Mainresponse = JsonSerializer.Deserialize<MainResponse>(response, new JsonSerializerOptions { PropertyNameCaseInsensitive = true });

            if (Mainresponse != null)
            {

                //check for bad request
                
                string AuthResponseJson = JsonSerializer.Serialize(Mainresponse.Content);

                var AuthResponse = JsonSerializer.Deserialize<AuthenticationResponse>(AuthResponseJson, new JsonSerializerOptions { PropertyNameCaseInsensitive = true });

                string accessToken = AuthResponse.AccessToken;

                var handler = new JwtSecurityTokenHandler();
                var token = handler.ReadJwtToken(accessToken) as JwtSecurityToken;

                string _userId = token.Claims.First(claim => claim.Type == JwtRegisteredClaimNames.NameId).Value;
                string _email = token.Claims.First(claim => claim.Type == JwtRegisteredClaimNames.Email).Value;

                var myId = Guid.Parse(_userId);
                //userDataService.User.Email = _email;

                var userBasicDetails = new UserBasicDetails(_userId, _email, AuthResponse.AccessToken, AuthResponse.RefreshToken);
                
                string userBasicDetailsJson = JsonSerializer.Serialize(userBasicDetails);
                               

                //save to local storage
                await SecureStorageHandler.SaveToSecureStorageAsync(nameof(Setting.UserBasicDetails), userBasicDetailsJson);
                

                if (!Mainresponse.IsSuccess)
                {
                    //await App.Current.MainPage.DisplayAlert("Error", "Invalid credentials", "Ok");
                    //display error message via jsinterop
                    logToBrowserConsole.LogToBC("Invalid credentials");
                    navManager.NavigateTo("login");
                }
                else
                {
                    //await App.Current.MainPage.DisplayAlert("Success", "Successful login", "Ok");
                    //display success message via jsinterop
                    logToBrowserConsole.LogToBC("Successful login");
                    var user = await userDataService.IsLoggedInAsync(myId);                    
                    
                    user.UserType = UserType.Admin;
                    navManager.NavigateTo("home");
                }

            }

        }
        else
        {
            //api error
            //await App.Current.MainPage.DisplayAlert("Error", "An error occured while trying to login", "Ok");
            //display error message via jsinterop
            logToBrowserConsole.LogToBC("An error occured while trying to login");
            navManager.NavigateTo("login");
        }

    }

    
}