package com.airlock.iam.oauth2.domain.model.accountregistration;

import com.airlock.iam.base.api.domain.model.exception.FailureException;
import com.airlock.iam.common.api.domain.model.store.user.UserStore;
import com.airlock.iam.login.api.domain.model.oauth2.OAuth2Credential;
import com.airlock.iam.login.api.domain.model.oauth2.accountregistration.AccountRegistrationUsername;
import com.airlock.iam.login.api.domain.model.oauth2.accountregistration.AccountRegistrationUsernameProvider;
import edu.umd.cs.findbugs.annotations.SuppressFBWarnings;

public final class ContextDataUsernameProvider implements AccountRegistrationUsernameProvider {
   private final String contextDataFieldName;

   @Override
   public AccountRegistrationUsername provide(OAuth2Credential credential, UserStore userStore) {
      Object attributeValue = credential.getAttributeValue(this.contextDataFieldName);
      if (attributeValue instanceof String) {
         return new AccountRegistrationUsername((String)attributeValue);
      } else if (attributeValue == null) {
         throw new FailureException("Context data to be used as username is not present.");
      } else {
         throw new FailureException("Context data can not be mapped to a username.");
      }
   }

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

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

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

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

      @SuppressFBWarnings(justification = "generated code")
      public ContextDataUsernameProvider.ContextDataUsernameProviderBuilder contextDataFieldName(String contextDataFieldName) {
         this.contextDataFieldName = contextDataFieldName;
         return this;
      }

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

      @SuppressFBWarnings(justification = "generated code")
      @Override
      public String toString() {
         return "ContextDataUsernameProvider.ContextDataUsernameProviderBuilder(contextDataFieldName=" + this.contextDataFieldName + ")";
      }
   }
}