content: /*
   * Copyright 2012-2022 the original author or authors.
   *
   * 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 io.spring.start.site.support.implicit;
  
  import java.util.function.Consumer;
  import java.util.function.Predicate;
  
  import io.spring.initializr.generator.buildsystem.Build;
  import io.spring.initializr.generator.spring.documentation.HelpDocument;
  
  /**
   * A dependency that is added when a {@link Build} is in a certain state.
   *
   * @author Stephane Nicoll
   * @author Andy Wilkinson
   */
  public final class ImplicitDependency {
  
  	private final Predicate<Build> buildPredicate;
  
  	private final Consumer<Build> buildCustomizer;
  
  	private final Consumer<HelpDocument> helpDocumentCustomizer;
  
  	private ImplicitDependency(Builder builder) {
  		this.buildPredicate = builder.buildPredicate;
  		this.buildCustomizer = builder.buildCustomizer;
  		this.helpDocumentCustomizer = builder.helpDocumentCustomizer;
  	}
  
  	/**
  	 * Customize the specified {@link Build} if necessary.
  	 * @param build a build
  	 */
  	public void customize(Build build) {
  		if (this.buildCustomizer != null && this.buildPredicate.test(build)) {
  			this.buildCustomizer.accept(build);
  		}
  	}
  
  	/**
  	 * Customize the specified {@link HelpDocument} based on the state of the specified
  	 * {@link Build} if necessary.
  	 * @param helpDocument a help document
  	 * @param build a build
  	 */
  	public void customize(HelpDocument helpDocument, Build build) {
  		if (this.helpDocumentCustomizer != null && this.buildPredicate.test(build)) {
  			this.helpDocumentCustomizer.accept(helpDocument);
  		}
  	}
  
  	/**
  	 * Builder for {@link ImplicitDependency}.
  	 */
  	public static class Builder {
  
  		private Predicate<Build> buildPredicate = (build) -> true;
  
  		private Consumer<Build> buildCustomizer;
  
  		private Consumer<HelpDocument> helpDocumentCustomizer;
  
  		/**
  		 * For the implicit dependency created by this builder to be enabled, any of the
  		 * specified {@code dependencies} must be present in the build. May be combined
  		 * with other matches.
  		 * @param dependencies the dependencies to match
  		 * @return this for method chaining
  		 * @see #match(Predicate)
  		 */
  		public Builder matchAnyDependencyIds(String... dependencies) {
  			return match((build) -> matchAny(build, dependencies));
  		}
  
  		/**
  		 * For the implicit dependency created by this builder to be enabled, all of the
  		 * specified {@code dependencies} must be present in the build. May be combined
  		 * with other matches.
  		 * @param dependencies the dependencies to match
  		 * @return this for method chaining
  		 * @see #match(Predicate)
  		 */
  		public Builder matchAllDependencyIds(String... dependencies) {
  			return match((build) -> matchAll(build, dependencies));
  		}
  
  		/**
  		 * For the implicit dependency created by this builder to be enabled, the
  		 * specified {@link Predicate} must pass. May be combined with other matches.
  		 * @param buildPredicate the predicate to use to enable the dependency
  		 * @return this for method chaining
  		 */
  		public Builder match(Predicate<Build> buildPredicate) {
  			this.buildPredicate = this.buildPredicate.and(buildPredicate);
  			return this;
  		}
  
  		/**
  		 * Set the {@link Build} customizer to use.
  		 * @param buildCustomizer the build customizer to use
  		 * @return this for method chaining
  		 */
  		public Builder customizeBuild(Consumer<Build> buildCustomizer) {
  			this.buildCustomizer = buildCustomizer;
  			return this;
  		}
  
  		/**
  		 * Set the {@link HelpDocument} customizer to use.
  		 * @param helpDocumentCustomizer the help document customizer to use
  		 * @return this for method chaining
  		 */
  		public Builder customizeHelpDocument(Consumer<HelpDocument> helpDocumentCustomizer) {
  			this.helpDocumentCustomizer = helpDocumentCustomizer;
  			return this;
  		}
  
  		/**
  		 * Create an {@link ImplicitDependency} based on the state of this builder.
  		 * @return an implicit dependency
  		 */
  		public ImplicitDependency build() {
  			return new ImplicitDependency(this);
  		}
  
  		private static boolean matchAny(Build build, String... dependencies) {
  			for (String dependency : dependencies) {
  				if (build.dependencies().has(dependency)) {
  					return true;
  				}
  			}
  			return false;
  		}
  
  		private static boolean matchAll(Build build, String... dependencies) {
  			for (String dependency : dependencies) {
  				if (!build.dependencies().has(dependency)) {
  					return false;
  				}
  			}
  			return true;
  		}
  
  	}
  
  }
  