/**************************************************************************
    *
    * Copyright (c) 2017-2020 Yawg project contributors.
    *
    **************************************************************************/
   
   package com.varmateo.yawg.spi;
   
   import java.util.ArrayList;
  import java.util.Collections;
  import java.util.List;
  import java.util.Objects;
  
  import com.varmateo.yawg.spi.TemplateContext.Author;
  
  
  /**
   * Builder of <code>TemplateContext</code> instances.
   */
  public final class TemplateContextBuilder {
  
  
      private List<Author> _authors;
      private String _body;
      private String _pageUrl;
      private String _rootRelativeUrl;
      private PageVars _pageVars;
      private String _title;
      private String _bakeId;
  
  
      /**
       *
       */
      private TemplateContextBuilder() {
  
          _authors = new ArrayList<>();
          _body = null;
          _pageUrl = null;
          _rootRelativeUrl = null;
          _pageVars = PageVars.empty();
          _title = null;
          _bakeId = null;
      }
  
  
      /**
       * Creates a new empty builder.
       *
       * @return A newly created <code>TemplateContextBuilder</code>
       * instance.
       */
      public static TemplateContextBuilder create() {
  
          return new TemplateContextBuilder();
      }
  
  
      /**
       *
       */
      public TemplateContextBuilder addAuthor(
              final String name,
              final String email) {
  
          final Author author = Author.create(name, email);
          _authors.add(author);
          return this;
      }
  
  
      /**
       *
       */
      public TemplateContextBuilder body(final String body) {
  
          _body = Objects.requireNonNull(body);
          return this;
      }
  
  
      /**
       *
       */
      public TemplateContextBuilder pageUrl(final String pageUrl) {
  
          _pageUrl = pageUrl;
          return this;
      }
  
  
      /**
       *
       */
      public TemplateContextBuilder rootRelativeUrl(
              final String rootRelativeUrl) {
  
          _rootRelativeUrl = rootRelativeUrl;
          return this;
     }
 
 
     /**
      *
      */
     public TemplateContextBuilder pageVars(final PageVars pageVars) {
 
         _pageVars = pageVars;
         return this;
     }
 
 
     /**
      *
      */
     public TemplateContextBuilder title(final String title) {
 
         _title = Objects.requireNonNull(title);
         return this;
     }
 
 
     /**
      *
      */
     public TemplateContextBuilder bakeId(final String bakeId) {
 
         _bakeId = bakeId;
         return this;
     }
 
 
     /**
      *
      */
     public TemplateContext build() {
 
         return new TemplateContextImpl(this);
     }
 
 
     /**
      *
      */
     private static final class TemplateContextImpl
             implements TemplateContext {
 
 
         private final List<Author> _authors;
         private final String _body;
         private final String _pageUrl;
         private final PageVars _pageVars;
         private final String _rootRelativeUrl;
         private final String _title;
         private final String _bakeId;
 
 
         /**
          *
          */
         /* default */ TemplateContextImpl(final TemplateContextBuilder builder) {
 
             _authors = Collections.unmodifiableList(new ArrayList<>(builder._authors));
             _body = Objects.requireNonNull(builder._body);
             _pageUrl = Objects.requireNonNull(builder._pageUrl);
             _pageVars = Objects.requireNonNull(builder._pageVars);
             _rootRelativeUrl = Objects.requireNonNull(builder._rootRelativeUrl);
             _title = Objects.requireNonNull(builder._title);
             _bakeId = Objects.requireNonNull(builder._bakeId);
         }
 
 
         /**
          * {@inheritDoc}
          */
         @Override
         public Iterable<Author> authors() {
             return _authors;
         }
 
 
         /**
          * {@inheritDoc}
          */
         @Override
         public String body() {
             return _body;
         }
 
 
         /**
          * {@inheritDoc}
          */
         @Override
         public String pageUrl() {
             return _pageUrl;
         }
 
 
         /**
          * {@inheritDoc}
          */
         @Override
         public PageVars pageVars() {
             return _pageVars;
         }
 
 
         /**
          * {@inheritDoc}
          */
         @Override
         public String rootRelativeUrl() {
             return _rootRelativeUrl;
         }
 
 
         /**
          * {@inheritDoc}
          */
         @Override
         public String title() {
             return _title;
         }
 
 
         /**
          * {@inheritDoc}
          */
         @Override
         public String bakeId() {
             return _bakeId;
         }
 
     }
 
 }