using System;
using Wicture.DbRESTFul.Configuration;
using Wicture.DbRESTFul.Resources.Api;

namespace Wicture.DbRESTFul.Authentication
{
    public class DefaultTokenOptionsProvider : ITokenOptionsProvider
    {
        private readonly ISectionConfigProvider _sectionConfigProvider;

        private static TokenOptions _default = new TokenOptions()
        {
            TokenRequestPath = "/token",
            RefreshTokenRequestPath = "/token/refresh",
            SecretKey = "Wicture@Micr0serv!ces^Secretkeys", //"Wicture@Micr0serv!ce^Secret",
            Audience = "DbRESTFulApi",
            Issuer = "Wicture",
            CookieName = "access_token",
            UseJwtCookie = true,
            Expiration = TimeSpan.FromHours(24),
            LoginSchema = new Schema[]
            {
                new Schema { name = "username", nullable = false, type = SchemaType.String },
                new Schema { name = "password", nullable = false, type = SchemaType.String },
                new Schema { name = "tag", nullable = true, type = SchemaType.String }
            }
        };

        public DefaultTokenOptionsProvider(ISectionConfigProvider sectionConfigProvider)
        {
            _sectionConfigProvider = sectionConfigProvider;
        }

        public virtual TokenOptions Provide()
        {
            var option = _sectionConfigProvider.Provide<TokenOptions>();
            if (option == null) return _default;

            if (string.IsNullOrEmpty(option.TokenRequestPath)) option.TokenRequestPath = _default.TokenRequestPath;
            if (string.IsNullOrEmpty(option.RefreshTokenRequestPath)) option.RefreshTokenRequestPath = _default.RefreshTokenRequestPath;
            if (string.IsNullOrEmpty(option.SecretKey)) option.SecretKey = _default.SecretKey;
            if (string.IsNullOrEmpty(option.Audience)) option.Audience = _default.Audience;
            if (string.IsNullOrEmpty(option.Issuer)) option.Issuer = _default.Issuer;
            if (option.Expiration == default) option.Expiration = _default.Expiration;
            if (!(option.LoginSchema?.Length > 0)) option.LoginSchema = _default.LoginSchema;

            return option;
        }
    }
}