package com.groupdocs.ui;
import com.fasterxml.jackson.databind.ObjectMapper;
import com.groupdocs.viewer.domain.FileDescription;
import com.groupdocs.viewer.handler.ViewerHtmlHandler;
import javax.servlet.ServletException;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.io.IOException;
import java.util.List;
import java.util.Optional;
import java.util.stream.Collectors;
@WebServlet("/files")
public class FilesListServlet
extends HttpServlet {
protected void doGet(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
response.setContentType("application/json");
ViewerHtmlHandler handler = Utils.createViewerHtmlHandler();
List<FileDescription> tree = null;
try {
tree = handler.loadFileTree().getFileTree();
} catch (Exception x) {
throw new RuntimeException(x);
}
List<String> result = tree
.parallelStream()
.filter(fd -> !fd.isDirectory()
&& !"README.txt".equalsIgnoreCase(fd.getName())
&& !Optional.ofNullable(fd.getName()).get().isEmpty()
&& !Optional.ofNullable(fd.getDocumentType()).get().isEmpty()
)
.map(fd -> fd.getName())
.collect(Collectors.toList());
new ObjectMapper().writeValue(response.getOutputStream(), result);
}
}