// Licensed to the .NET Foundation under one or more agreements.
// The .NET Foundation licenses this file to you under the MIT license.
 
using Microsoft.AspNetCore.Components;
using Microsoft.AspNetCore.Components.WebAssembly.Authentication;
using Microsoft.Authentication.WebAssembly.Msal.Models;
using Microsoft.Extensions.Options;
 
namespace Microsoft.Authentication.WebAssembly.Msal;
 
internal sealed class MsalDefaultOptionsConfiguration : IPostConfigureOptions<RemoteAuthenticationOptions<MsalProviderOptions>>
{
    private readonly NavigationManager _navigationManager;
 
    public MsalDefaultOptionsConfiguration(NavigationManager navigationManager)
    {
        _navigationManager = navigationManager;
    }
 
    public void Configure(RemoteAuthenticationOptions<MsalProviderOptions> options)
    {
        options.UserOptions.ScopeClaim ??= "scp";
        options.UserOptions.AuthenticationType ??= options.ProviderOptions.Authentication.ClientId;
 
        var redirectUri = options.ProviderOptions.Authentication.RedirectUri;
        if (redirectUri == null || !Uri.TryCreate(redirectUri, UriKind.Absolute, out _))
        {
            redirectUri ??= "authentication/login-callback";
            options.ProviderOptions.Authentication.RedirectUri = _navigationManager
                .ToAbsoluteUri(redirectUri).AbsoluteUri;
        }
 
        var logoutUri = options.ProviderOptions.Authentication.PostLogoutRedirectUri;
        if (logoutUri == null || !Uri.TryCreate(logoutUri, UriKind.Absolute, out _))
        {
            logoutUri ??= "authentication/logout-callback";
            options.ProviderOptions.Authentication.PostLogoutRedirectUri = _navigationManager
                .ToAbsoluteUri(logoutUri).AbsoluteUri;
        }
 
        options.ProviderOptions.Authentication.NavigateToLoginRequestUrl = false;
    }
 
    public void PostConfigure(string? name, RemoteAuthenticationOptions<MsalProviderOptions> options)
    {
        if (string.Equals(name, Options.DefaultName, StringComparison.Ordinal))
        {
            Configure(options);
        }
    }
}