// Copyright (c) Microsoft Open Technologies, Inc. All rights reserved.
// Licensed under the Apache License, Version 2.0. See License.txt in the project root for license information.

using Microsoft.AspNet.Http;
using Microsoft.AspNet.Security.OAuth;

namespace Microsoft.AspNet.Security.Facebook
{
    /// <summary>
    /// Configuration options for <see cref="FacebookAuthenticationMiddleware"/>.
    /// </summary>
    public class FacebookAuthenticationOptions : OAuthAuthenticationOptions<IFacebookAuthenticationNotifications>
    {
        /// <summary>
        /// Initializes a new <see cref="FacebookAuthenticationOptions"/>.
        /// </summary>
        public FacebookAuthenticationOptions()
        {
            AuthenticationType = FacebookAuthenticationDefaults.AuthenticationType;
            Caption = AuthenticationType;
            CallbackPath = new PathString("/signin-facebook");
            SendAppSecretProof = true;
            AuthorizationEndpoint = FacebookAuthenticationDefaults.AuthorizationEndpoint;
            TokenEndpoint = FacebookAuthenticationDefaults.TokenEndpoint;
            UserInformationEndpoint = FacebookAuthenticationDefaults.UserInformationEndpoint;
        }

        // Facebook uses a non-standard term for this field.
        /// <summary>
        /// Gets or sets the Facebook-assigned appId.
        /// </summary>
        public string AppId
        {
            get { return ClientId; }
            set { ClientId = value; }
        }

        // Facebook uses a non-standard term for this field.
        /// <summary>
        /// Gets or sets the Facebook-assigned app secret.
        /// </summary>
        public string AppSecret
        {
            get { return ClientSecret; }
            set { ClientSecret = value; }
        }

        /// <summary>
        /// Gets or sets if the appsecret_proof should be generated and sent with Facebook API calls.
        /// This is enabled by default.
        /// </summary>
        public bool SendAppSecretProof { get; set; }
    }
}