/*
 * Licensed under the Apache License, Version 2.0 (http://www.apache.org/licenses/LICENSE-2.0)
 * See https://github.com/openiddict/openiddict-core for more information concerning
 * the license and the contributors participating to this project.
 */

using Microsoft.AspNetCore;
using Microsoft.Extensions.Caching.Distributed;

namespace OpenIddict.Server.AspNetCore;

/// <summary>
/// Provides various settings needed to configure the OpenIddict ASP.NET Core server integration.
/// </summary>
public sealed class OpenIddictServerAspNetCoreOptions : AuthenticationSchemeOptions
{
    /// <summary>
    /// Gets or sets a boolean indicating whether incoming requests arriving on insecure endpoints should be rejected.
    /// By default, this property is set to <see langword="false"/> to help mitigate man-in-the-middle attacks.
    /// </summary>
    public bool DisableTransportSecurityRequirement { get; set; }

    /// <summary>
    /// Gets or sets a boolean indicating whether the pass-through mode is enabled for the authorization endpoint.
    /// When the pass-through mode is used, OpenID Connect requests are initially handled by OpenIddict.
    /// Once validated, the rest of the request processing pipeline is invoked, so that OpenID Connect requests
    /// can be handled at a later stage (in a custom middleware or in a MVC controller, for instance).
    /// </summary>
    public bool EnableAuthorizationEndpointPassthrough { get; set; }

    /// <summary>
    /// Gets or sets a boolean indicating whether OpenIddict should allow the rest of the request processing pipeline
    /// to be invoked when returning an error from the interactive authorization and logout endpoints.
    /// When this option is enabled, special logic must be added to these actions to handle errors, that can be
    /// retrieved using <see cref="OpenIddictServerAspNetCoreHelpers.GetOpenIddictServerResponse(HttpContext)"/>.
    /// </summary>
    /// <remarks>
    /// Important: the error pass-through mode cannot be used when the status code pages integration is enabled.
    /// </remarks>
    public bool EnableErrorPassthrough { get; set; }

    /// <summary>
    /// Gets or sets a boolean indicating whether the pass-through mode is enabled for the logout endpoint.
    /// When the pass-through mode is used, OpenID Connect requests are initially handled by OpenIddict.
    /// Once validated, the rest of the request processing pipeline is invoked, so that OpenID Connect requests
    /// can be handled at a later stage (in a custom middleware or in a MVC controller, for instance).
    /// </summary>
    public bool EnableLogoutEndpointPassthrough { get; set; }

    /// <summary>
    /// Gets or sets a boolean indicating whether the pass-through mode is enabled for the token endpoint.
    /// When the pass-through mode is used, OpenID Connect requests are initially handled by OpenIddict.
    /// Once validated, the rest of the request processing pipeline is invoked, so that OpenID Connect requests
    /// can be handled at a later stage (in a custom middleware or in a MVC controller, for instance).
    /// </summary>
    public bool EnableTokenEndpointPassthrough { get; set; }

    /// <summary>
    /// Gets or sets a boolean indicating whether the pass-through mode is enabled for the userinfo endpoint.
    /// When the pass-through mode is used, OpenID Connect requests are initially handled by OpenIddict.
    /// Once validated, the rest of the request processing pipeline is invoked, so that OpenID Connect requests
    /// can be handled at a later stage (in a custom middleware or in a MVC controller, for instance).
    /// </summary>
    public bool EnableUserinfoEndpointPassthrough { get; set; }

    /// <summary>
    /// Gets or sets a boolean indicating whether the pass-through mode is enabled for the user verification endpoint.
    /// When the pass-through mode is used, OpenID Connect requests are initially handled by OpenIddict.
    /// Once validated, the rest of the request processing pipeline is invoked, so that OpenID Connect requests
    /// can be handled at a later stage (in a custom middleware or in a MVC controller, for instance).
    /// </summary>
    public bool EnableVerificationEndpointPassthrough { get; set; }

    /// <summary>
    /// Gets or sets a boolean indicating whether requests received by the authorization endpoint
    /// should be cached. When enabled, authorization requests are automatically stored
    /// in the distributed cache, which allows flowing large payloads across requests.
    /// Enabling this option is recommended when using external authentication providers
    /// or when large GET or POST OpenID Connect authorization requests support is required.
    /// </summary>
    public bool EnableAuthorizationRequestCaching { get; set; }

    /// <summary>
    /// Gets or sets a boolean indicating whether requests received by the logout endpoint should be cached.
    /// When enabled, authorization requests are automatically stored in the distributed cache.
    /// </summary>
    public bool EnableLogoutRequestCaching { get; set; }

    /// <summary>
    /// Gets or sets a boolean indicating whether integration with the status code pages
    /// middleware should be enabled or not. Once enabled, errors generated by the OpenIddict
    /// interactive endpoints (e.g authorization or logout) can be handled by ASP.NET Core.
    /// </summary>
    public bool EnableStatusCodePagesIntegration { get; set; }

    /// <summary>
    /// Gets or sets a boolean whether JSON response indentation should be suppressed or not.
    /// </summary>
    public bool SuppressJsonResponseIndentation { get; set; }

    /// <summary>
    /// Gets or sets the optional "realm" value returned to the caller as part of the WWW-Authenticate header.
    /// </summary>
    public string? Realm { get; set; }

    /// <summary>
    /// Gets or sets the caching policy used by the authorization endpoint.
    /// </summary>
    public DistributedCacheEntryOptions AuthorizationRequestCachingPolicy { get; set; } = new()
    {
        AbsoluteExpirationRelativeToNow = TimeSpan.FromHours(1),
        SlidingExpiration = TimeSpan.FromMinutes(30)
    };

    /// <summary>
    /// Gets or sets the caching policy used by the logout endpoint.
    /// </summary>
    public DistributedCacheEntryOptions LogoutRequestCachingPolicy { get; set; } = new()
    {
        AbsoluteExpirationRelativeToNow = TimeSpan.FromHours(1),
        SlidingExpiration = TimeSpan.FromMinutes(30)
    };
}