// Path: cloud-spanner-r2dbc/src/main/java/com/google/cloud/spanner/r2dbc/util/Assert.java
// public class Assert {
// 
//   private Assert() {
//     // Prevent instantiation.
//   }
// 
//   /**
//    * Checks that a specified object reference is not {@code null} and throws a customized
//    * {@link IllegalArgumentException} if it is.
//    *
//    * @param t the object reference to check for nullity
//    * @param message informative message to be used in the event that an
//    *     {@link IllegalArgumentException} is thrown
//    * @param <T> the type of object reference
//    *
//    * @return the original object {@code t}
//    *
//    * @throws IllegalArgumentException if {@code o} is {@code null}
//    */
//   public static <T> T requireNonNull(@Nullable T t, String message) {
//     if (t == null) {
//       throw new IllegalArgumentException(message);
//     }
// 
//     return t;
//   }
// 
//   /**
//    * Checks that a specified object reference is not {@code null} or an empty string, and throws a
//    * customized {@link IllegalArgumentException} if it is.
//    *
//    * @param s string to check
//    * @param message informative message to be used in the event that an
//    *     {@link IllegalArgumentException} is thrown
//    *
//    * @return the original string {@code s}
//    *
//    * @throws IllegalArgumentException if {@code o} is {@code null}
//    */
//   public static ByteString requireNonEmpty(@Nullable ByteString s, String message) {
//     if (s == null || s.isEmpty()) {
//       throw new IllegalArgumentException(message);
//     }
// 
//     return s;
//   }
// 
//   /**
//    * Checks that a specified object reference is not {@code null} or an empty string, and throws a
//    * customized {@link IllegalArgumentException} if it is.
//    *
//    * @param s string to check
//    * @param message informative message to be used in the event that an
//    *     {@link IllegalArgumentException} is thrown
//    *
//    * @return the original string {@code s}
//    *
//    * @throws IllegalArgumentException if {@code o} is {@code null}
//    */
//   public static String requireNonEmpty(@Nullable String s, String message) {
//     if (s == null || s.isEmpty()) {
//       throw new IllegalArgumentException(message);
//     }
// 
//     return s;
//   }
// 
// }


import com.google.auth.oauth2.GoogleCredentials;
import com.google.auth.oauth2.OAuth2Credentials;
import com.google.cloud.spanner.SpannerOptions;
import com.google.cloud.spanner.r2dbc.util.Assert;
import io.r2dbc.spi.ConnectionFactoryOptions;
import io.r2dbc.spi.R2dbcNonTransientResourceException;
import java.io.IOException;
import java.time.Duration;
import java.util.Collections;
import java.util.Objects;
import java.util.regex.Matcher;
import java.util.regex.Pattern;
/*
 * Copyright 2019-2020 Google LLC
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     https://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package com.google.cloud.spanner.r2dbc;


/**
 * Configurable properties for Cloud Spanner.
 */
public class SpannerConnectionConfiguration {

  public static final String FQDN_PATTERN_GENERATE =
      "projects/%s/instances/%s/databases/%s";

  /** Pattern used to validate that the user input database string is in the right format. */
  public static final Pattern FQDN_PATTERN_PARSE = Pattern.compile(
      "projects\\/([\\w\\-]+)\\/instances\\/([\\w\\-]+)\\/databases\\/([\\w\\-]+)$");

  private static final String USER_AGENT_LIBRARY_NAME = "cloud-spanner-r2dbc";

  private static final String PACKAGE_VERSION =
      SpannerConnectionConfiguration.class.getPackage().getImplementationVersion();

  private static final String USER_AGENT_KEY = "user-agent";

  // TODO: check how to handle full URL (it gets parsed by SPI, we only get pieces)
  private final String fullyQualifiedDbName;

  private String projectId;

  private String instanceName;

  private String databaseName;

  private final OAuth2Credentials credentials;

  private int partialResultSetFetchSize;

  private Duration ddlOperationTimeout;

  private Duration ddlOperationPollInterval;

  private boolean usePlainText;

  private String optimizerVersion;

  private boolean readonly;

  private boolean autocommit;

  /**
   * Basic property initializing constructor.
   *
   * @param projectId GCP project that contains the database.
   * @param instanceName instance to connect to
   * @param databaseName database to connect to.
   * @param credentials GCP credentials to authenticate service calls with.
   */
  private SpannerConnectionConfiguration(
      String projectId,
      String instanceName,
      String databaseName,
      OAuth2Credentials credentials) {

// Path: cloud-spanner-r2dbc/src/main/java/com/google/cloud/spanner/r2dbc/util/Assert.java
// public class Assert {
// 
//   private Assert() {
//     // Prevent instantiation.
//   }
// 
//   /**
//    * Checks that a specified object reference is not {@code null} and throws a customized
//    * {@link IllegalArgumentException} if it is.
//    *
//    * @param t the object reference to check for nullity
//    * @param message informative message to be used in the event that an
//    *     {@link IllegalArgumentException} is thrown
//    * @param <T> the type of object reference
//    *
//    * @return the original object {@code t}
//    *
//    * @throws IllegalArgumentException if {@code o} is {@code null}
//    */
//   public static <T> T requireNonNull(@Nullable T t, String message) {
//     if (t == null) {
//       throw new IllegalArgumentException(message);
//     }
// 
//     return t;
//   }
// 
//   /**
//    * Checks that a specified object reference is not {@code null} or an empty string, and throws a
//    * customized {@link IllegalArgumentException} if it is.
//    *
//    * @param s string to check
//    * @param message informative message to be used in the event that an
//    *     {@link IllegalArgumentException} is thrown
//    *
//    * @return the original string {@code s}
//    *
//    * @throws IllegalArgumentException if {@code o} is {@code null}
//    */
//   public static ByteString requireNonEmpty(@Nullable ByteString s, String message) {
//     if (s == null || s.isEmpty()) {
//       throw new IllegalArgumentException(message);
//     }
// 
//     return s;
//   }
// 
//   /**
//    * Checks that a specified object reference is not {@code null} or an empty string, and throws a
//    * customized {@link IllegalArgumentException} if it is.
//    *
//    * @param s string to check
//    * @param message informative message to be used in the event that an
//    *     {@link IllegalArgumentException} is thrown
//    *
//    * @return the original string {@code s}
//    *
//    * @throws IllegalArgumentException if {@code o} is {@code null}
//    */
//   public static String requireNonEmpty(@Nullable String s, String message) {
//     if (s == null || s.isEmpty()) {
//       throw new IllegalArgumentException(message);
//     }
// 
//     return s;
//   }
// 
// }


// Path: cloud-spanner-r2dbc/src/main/java/com/google/cloud/spanner/r2dbc/SpannerConnectionConfiguration.java
import com.google.auth.oauth2.GoogleCredentials;
import com.google.auth.oauth2.OAuth2Credentials;
import com.google.cloud.spanner.SpannerOptions;
import com.google.cloud.spanner.r2dbc.util.Assert;
import io.r2dbc.spi.ConnectionFactoryOptions;
import io.r2dbc.spi.R2dbcNonTransientResourceException;
import java.io.IOException;
import java.time.Duration;
import java.util.Collections;
import java.util.Objects;
import java.util.regex.Matcher;
import java.util.regex.Pattern;

/*
 * Copyright 2019-2020 Google LLC
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     https://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package com.google.cloud.spanner.r2dbc;


/**
 * Configurable properties for Cloud Spanner.
 */
public class SpannerConnectionConfiguration {

  public static final String FQDN_PATTERN_GENERATE =
      "projects/%s/instances/%s/databases/%s";

  /** Pattern used to validate that the user input database string is in the right format. */
  public static final Pattern FQDN_PATTERN_PARSE = Pattern.compile(
      "projects\\/([\\w\\-]+)\\/instances\\/([\\w\\-]+)\\/databases\\/([\\w\\-]+)$");

  private static final String USER_AGENT_LIBRARY_NAME = "cloud-spanner-r2dbc";

  private static final String PACKAGE_VERSION =
      SpannerConnectionConfiguration.class.getPackage().getImplementationVersion();

  private static final String USER_AGENT_KEY = "user-agent";

  // TODO: check how to handle full URL (it gets parsed by SPI, we only get pieces)
  private final String fullyQualifiedDbName;

  private String projectId;

  private String instanceName;

  private String databaseName;

  private final OAuth2Credentials credentials;

  private int partialResultSetFetchSize;

  private Duration ddlOperationTimeout;

  private Duration ddlOperationPollInterval;

  private boolean usePlainText;

  private String optimizerVersion;

  private boolean readonly;

  private boolean autocommit;

  /**
   * Basic property initializing constructor.
   *
   * @param projectId GCP project that contains the database.
   * @param instanceName instance to connect to
   * @param databaseName database to connect to.
   * @param credentials GCP credentials to authenticate service calls with.
   */
  private SpannerConnectionConfiguration(
      String projectId,
      String instanceName,
      String databaseName,
      OAuth2Credentials credentials) {

    Assert.requireNonNull(projectId, "projectId must not be null");