io.github.wimdeblauwe.vite.spring.boot.ViteManifestReader Maven / Gradle / Ivy

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package io.github.wimdeblauwe.vite.spring.boot;

import com.fasterxml.jackson.databind.ObjectMapper;
import com.fasterxml.jackson.databind.type.MapType;
import jakarta.annotation.PostConstruct;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.core.io.Resource;
import org.springframework.core.io.ResourceLoader;

import java.io.IOException;
import java.io.InputStream;
import java.util.List;
import java.util.Map;

/**
 * Reads entries generated by Vite when running in build mode with all generated assets
 * from the manifest JSON file that Vite generates.
 */
public class ViteManifestReader {

  private static final Logger LOGGER = LoggerFactory.getLogger(ViteManifestReader.class);

  private final ResourceLoader resourceLoader;
  private final ObjectMapper objectMapper;
  private Map manifest;

  public ViteManifestReader(ResourceLoader resourceLoader,
                            ObjectMapper objectMapper) {
    this.resourceLoader = resourceLoader;
    this.objectMapper = objectMapper;
  }

  @PostConstruct
  public void init() throws IOException {
    Resource resource = resourceLoader.getResource("classpath:/static/.vite/manifest.json");
    if (resource.exists()) {
      try (InputStream inputStream = resource.getInputStream()) {
        MapType type = objectMapper.getTypeFactory().constructMapType(Map.class, String.class, ManifestEntry.class);
        manifest = objectMapper.readValue(inputStream, type);
      }
    } else {
      LOGGER.debug("Could not find vite-manifest.json. Run `npm run build` to generate it.");
    }
  }

  public String getBundledPath(String originalPath) {
    ManifestEntry entry = getManifestEntry(originalPath);
    return entry != null ? entry.file() : null;
  }

  public ManifestEntry getManifestEntry(String resource) {
    return manifest != null ? manifest.get(resource) : null;
  }

  public record ManifestEntry(String file, String src, boolean isEntry, List css, List imports) {

  }
}