using Codelyzer.Analysis;
using CTA.FeatureDetection.Common.Models.Features.Base;

namespace CTA.FeatureDetection.AuthType.CompiledFeatures
{
    public class WindowsAuthenticationFeature : WebConfigFeature
    {
        /// <summary>
        /// Determines if Windows Authentication is being used in a given project based on
        /// Web.config settings.
        ///
        /// Qualifications:
        /// 1. Web.config uses windows authentication configured in system.web:
        ///    <configuration>
        ///      <system.web>
        ///        <authentication mode="Windows">
        ///        </authentication>
        ///      </system.web>
        ///    </configuration>
        /// 2. Web.config uses windows authentication configured in system.webServer:
        ///   <configuration>
        ///      <system.webServer>
        ///        <authentication>
        ///             <windowsAuthentication enabled = "true" />
        ///        </authentication>
        ///      </system.webServer>
        ///   </configuration>
        /// </summary>
        /// <param name="analyzerResult">Source code analysis results</param>
        /// <returns>Whether or not Windows Authentication is used</returns>
        public override bool IsPresent(AnalyzerResult analyzerResult)
        {
            var config = LoadWebConfig(analyzerResult.ProjectResult.ProjectRootPath);
            return config.ContainsAttributeWithValue(Constants.AuthenticationElementElementPath, Constants.ModeAttribute, Constants.WindowsAuthenticationType) ||
                config.ContainsAttributeWithValue(Constants.WindowsAuthenticationElementPath, Constants.EnabledElement, "true");
        }
    }
}