package com.airlock.iam.techclientreg.application.configuration.registration.clientid;

import com.airlock.iam.base.misc.log.LogUtil;
import com.airlock.iam.plugin.api.annotation.config.ConfigurationValidator;
import com.airlock.iam.plugin.api.annotation.config.Plugin;
import com.airlock.iam.plugin.api.annotation.license.PluginLicenseRestriction;
import com.airlock.iam.plugin.api.annotation.property.StringProperty;
import com.airlock.iam.plugin.api.config.ConfigurationContext;
import com.airlock.iam.plugin.api.config.ConfigurationEnvironment;
import com.airlock.iam.plugin.api.config.Environment;
import com.airlock.iam.plugin.api.config.PluginConfiguration;
import com.airlock.iam.plugin.api.exception.ConfigurationException;
import com.airlock.iam.plugin.api.exception.PropertyConstraintViolationException;
import com.airlock.iam.plugin.api.valuereader.StringPropertyValueReader;
import com.nimbusds.oauth2.sdk.client.ClientInformation;
import com.nimbusds.oauth2.sdk.client.ClientMetadata;
import edu.umd.cs.findbugs.annotations.SuppressFBWarnings;

@Plugin(
   description = "Accepts a Client ID specified in the request if no client exists by this name yet.<br>\n<b>Warning:</b> the <a href=\"https://datatracker.ietf.org/doc/html/rfc7591#section-6\" target=\"_blank\">specification</a> explicitly forbids\nclients to create their own client identifier due to privacy and security issues. Use this plugin with caution.",
   displayName = "Client ID From Request"
)
@PluginLicenseRestriction(moduleAffiliation = "TechClientRegistration")
public class ClientIdFromRequestConfig implements DcrClientIdGeneratorConfig {
   @StringProperty(
      description = "The request parameter containing the Client ID. Must not be one of the standard parameters specified in the RFC (e.g. <code>client_id</code>).",
      optional = false
   )
   private String requestParameter;
   private static final String REQUEST_PARAMETER_FIELD = "requestParameter";

   public String getRequestParameter() {
      return this.requestParameter;
   }

   @ConfigurationValidator
   static void validateBaseUriAndLinkRewriting(PluginConfiguration config, ConfigurationEnvironment env, ConfigurationContext context, Environment valEnv) throws ConfigurationException {
      String parameterName = StringPropertyValueReader.effectiveStringConfigValue(config, "requestParameter", env, context);
      if (parameterName != null && ClientMetadata.getRegisteredParameterNames().contains(parameterName)
         || ClientInformation.getRegisteredParameterNames().contains(parameterName)) {
         throw new PropertyConstraintViolationException(
            "requestParameter", config, env, context, "The parameter name %s is a reserved name and cannot be used.".formatted(LogUtil.quote(parameterName))
         );
      }
   }

   @SuppressFBWarnings(justification = "generated code")
   public static ClientIdFromRequestConfig.ClientIdFromRequestConfigBuilder builder() {
      return new ClientIdFromRequestConfig.ClientIdFromRequestConfigBuilder();
   }

   @SuppressFBWarnings(justification = "generated code")
   public ClientIdFromRequestConfig() {
   }

   @SuppressFBWarnings(justification = "generated code")
   public ClientIdFromRequestConfig(String requestParameter) {
      this.requestParameter = requestParameter;
   }

   @SuppressFBWarnings(justification = "generated code")
   public static class ClientIdFromRequestConfigBuilder {
      @SuppressFBWarnings(justification = "generated code")
      private String requestParameter;

      @SuppressFBWarnings(justification = "generated code")
      ClientIdFromRequestConfigBuilder() {
      }

      @SuppressFBWarnings(justification = "generated code")
      public ClientIdFromRequestConfig.ClientIdFromRequestConfigBuilder requestParameter(String requestParameter) {
         this.requestParameter = requestParameter;
         return this;
      }

      @SuppressFBWarnings(justification = "generated code")
      public ClientIdFromRequestConfig build() {
         return new ClientIdFromRequestConfig(this.requestParameter);
      }

      @SuppressFBWarnings(justification = "generated code")
      @Override
      public String toString() {
         return "ClientIdFromRequestConfig.ClientIdFromRequestConfigBuilder(requestParameter=" + this.requestParameter + ")";
      }
   }
}