52 lines
1.9 KiB
Java
52 lines
1.9 KiB
Java
package eu.eudat.logic.managers;
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import org.springframework.beans.factory.annotation.Autowired;
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import org.springframework.http.HttpHeaders;
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import org.springframework.http.HttpStatus;
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import org.springframework.http.MediaType;
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import org.springframework.http.ResponseEntity;
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import org.springframework.stereotype.Component;
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import java.io.FileInputStream;
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import java.io.IOException;
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import java.io.InputStream;
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import java.nio.file.Files;
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import java.nio.file.Path;
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import java.nio.file.Paths;
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import java.util.List;
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import java.util.stream.Collectors;
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import java.util.stream.Stream;
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@Component
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public class MaterialManager {
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@Autowired
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public MaterialManager(){}
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public ResponseEntity<byte[]> getResponseEntity(String lang, Stream<Path> paths) throws IOException {
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List<String> result = paths.filter(Files::isRegularFile)
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.map(Path::toString).collect(Collectors.toList());
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String fileName = result.stream().filter(about -> about.contains("_" + lang)).findFirst().orElse(null);
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if (fileName == null) {
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fileName = result.stream().filter(about -> about.contains("_en")).findFirst().get();
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}
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InputStream is = new FileInputStream(fileName);
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Path path = Paths.get(fileName);
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HttpHeaders responseHeaders = new HttpHeaders();
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responseHeaders.setContentLength(is.available());
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responseHeaders.setContentType(MediaType.TEXT_HTML);
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responseHeaders.set("Content-Disposition", "attachment;filename=" + path.getFileName().toString());
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responseHeaders.set("Access-Control-Expose-Headers", "Content-Disposition");
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responseHeaders.get("Access-Control-Expose-Headers").add("Content-Type");
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byte[] content = new byte[is.available()];
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is.read(content);
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is.close();
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return new ResponseEntity<>(content, responseHeaders, HttpStatus.OK);
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}
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}
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