namespace DataApi.Services

{

    /// <summary>

    /// Executes CRUD operations on [iGuzzini_WebApiToken] data table using Kentico InfoProvider

    /// </summary>

    public class TokenDataService

    {

        private static readonly string[] TokenColumns =

        {

            "TokenId", "UserId", "AuthToken", "IssuedOn", "ExpiresOn"

        };

​

        /// <summary>

        /// Adds specified authentication token to the data table

        /// </summary>

        /// <param name="token">authentication token</param>

        public void Add(Token token)

        {

            var tokenInfo = new WebApiTokenInfo

            {

                UserId = token.UserId,

                AuthToken = Guid.Parse(token.AuthToken),

                IssuedOn = token.IssuedOn,

                ExpiresOn = token.ExpiresOn

            };

            WebApiTokenInfoProvider.SetWebApiTokenInfo(tokenInfo);

        }

​

        /// <summary>

        /// Updates the authentication token in the data table

        /// </summary>

        /// <param name="token">authentication token</param>

        public void Update(Token token)

        {

            var tokenInfo = FindByAuthToken(token);

​

            if (tokenInfo != null)

            {

                tokenInfo.ExpiresOn = token.ExpiresOn;

                WebApiTokenInfoProvider.SetWebApiTokenInfo(tokenInfo);

            }

        }

​

        /// <summary>

        /// Deletes the authentication token from the data table

        /// </summary>

        /// <param name="token">authentication token</param>

        public void Delete(Token token)

        {

            var tokenInfo = FindByAuthToken(token);

            if (tokenInfo != null)

            {

                WebApiTokenInfoProvider.DeleteWebApiTokenInfo(tokenInfo);

            }

        }

​

        /// <summary>

        /// Retrieves authentication token data by the token's GUID

        /// </summary>

        /// <param name="authToken">authentication token GUID</param>

        /// <returns></returns>

        public Token Get(string authToken)

        {

            var tokenInfo = FindByAuthToken(authToken);

            if (tokenInfo != null)

            {

                return new Token

                {

                    TokenId = tokenInfo.TokenId,

                    UserId = tokenInfo.UserId,

                    AuthToken = tokenInfo.AuthToken.ToString(),

                    IssuedOn = tokenInfo.IssuedOn,

                    ExpiresOn = tokenInfo.ExpiresOn

                };

            }

            return null;

        }

​

        private static WebApiTokenInfo FindByAuthToken(Token token)

        {

            Guard.ArgumentNotNull(token, "token");

​

            return FindByAuthToken(token.AuthToken);

        }

​

        private static WebApiTokenInfo FindByAuthToken(string authToken)

        {

            Guard.ArgumentNotNull(authToken, "authToken");

​

            return WebApiTokenInfoProvider.GetWebApiTokens()

                                .Where("AuthToken", QueryOperator.Equals, Guid.Parse(authToken))

                                .Columns(TokenColumns)

                                .TopN(1)

                                .FirstObject;

        }

    }

}