net.codestory.http.templating.helpers.AssetsHelperSource Maven / Gradle / Ivy

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/**
 * Copyright (C) 2013-2014 [email protected]
 *
 * 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
 *
 *         http://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 net.codestory.http.templating.helpers;

import com.github.jknack.handlebars.Handlebars.SafeString;
import net.codestory.http.compilers.CompilerFacade;
import net.codestory.http.io.Resources;
import net.codestory.http.misc.Cache;
import net.codestory.http.misc.Sha1;
import org.webjars.WebJarAssetLocator;

import java.io.IOException;
import java.nio.file.Path;
import java.util.ArrayList;
import java.util.List;
import java.util.function.Function;

import static java.util.stream.Collectors.joining;

public class AssetsHelperSource {
  private final Resources resources;
  private final CompilerFacade compilers;
  private final Function urlSupplier;
  private final WebJarAssetLocator webJarAssetLocator;

  public AssetsHelperSource(boolean prodMode, Resources resources, CompilerFacade compilers) {
    this.resources = resources;
    this.compilers = compilers;
    if (prodMode) {
      this.urlSupplier = new Cache<>(p -> uriWithSha1(p));
    } else {
      this.urlSupplier = path -> uriWithSha1(path);
    }
    this.webJarAssetLocator = new WebJarAssetLocator();
  }

  public CharSequence script(Object context) {
    return toString(context, value -> singleScript(value.toString()));
  }

  public CharSequence css(Object context) {
    return toString(context, value -> singleCss(value.toString()));
  }

  public CharSequence webjar(Object context) {
    return toString(context, value -> singleWebjar(value.toString()));
  }

  private static CharSequence toString(Object context, Function transform) {
    return new SafeString(contextAsList(context).stream().map(transform).collect(joining("\n")));
  }

  private static List