Adding mass addition of bib information feature

src/main/java/org/jabref/logic/importer/AutoEntryAddition.java

@@ -0,0 +1,132 @@
+package org.jabref.logic.importer;
+
+import java.io.IOException;
+import java.net.MalformedURLException;
+import java.net.URI;
+import java.net.URISyntaxException;
+import java.net.URL;
+import java.nio.charset.StandardCharsets;
+import java.util.List;
+import java.util.Optional;
+import java.util.regex.Matcher;
+import java.util.regex.Pattern;
+
+import org.jabref.logic.importer.fetcher.CrossRef;
+import org.jabref.logic.net.URLDownload;
+import org.jabref.model.entry.BibEntry;
+import org.jabref.model.entry.field.StandardField;
+import org.jabref.model.entry.identifier.DOI;
+
+import kong.unirest.json.JSONArray;
+import kong.unirest.json.JSONException;
+import kong.unirest.json.JSONObject;
+import org.apache.http.NameValuePair;
+import org.apache.http.client.utils.URLEncodedUtils;
+
+import static org.jabref.gui.edit.automaticfiededitor.AbstractAutomaticFieldEditorTabViewModel.LOGGER;
+
+public class AutoEntryAddition {
+    private static final String CROSSREF_API = "https://api.crossref.org/works?query=";
+    private static final String ARXIV_API = "http://export.arxiv.org/api/query?id_list=";
+
+    private static final Pattern ARXIV_ID_PATTERN = Pattern.compile("(\\d{4}\\.\\d{4,5})(v\\d+)?");
+
+    private ImportFormatPreferences preferences;
+    // Function to determine DOI from a given title - just a draft function to test some functionality
+//    public Optional<DOI> findDOI(String title) {
+//        try {
+//            String encodedTitle = URLEncoder.encode(title, StandardCharsets.UTF_8);
+//            URLDownload download = new URLDownload(CROSSREF_API + encodedTitle);
+//            String response = download.asString();
+//            JSONObject jsonResponse = new JSONObject(response);
+//
+//            if (jsonResponse.getJSONObject("message").getInt("total-results") > 0) {
+//                JSONArray items = jsonResponse.getJSONObject("message").getJSONArray("items");
+//                String doi = items.getJSONObject(0).getString("DOI");
+//                return DOI.parse(doi);
+//            }
+//        } catch (
+//                IOException |
+//                JSONException e) {
+//            LOGGER.error("Error while fetching DOI from CrossRef", e);
+//        }
+//        return Optional.empty();
+//    }
+//    public Optional<BibEntry> fetchEntryByTitle(String title) throws FetcherException {
+//        Optional<DOI> optionalDOI = findDOI(title);
+//        if (optionalDOI.isPresent()) {
+//            DoiFetcher fetcher = new DoiFetcher(preferences);
+//            return fetcher.performSearchById(optionalDOI.get().getDOI());
+//        }
+//
+//        return Optional.empty();
+//    }
+
+    // Function to extract an arxiv ID from a given URL through pattern matching
+    public static String extractArXivIDFromURL(String url) {
+        Matcher matcher = ARXIV_ID_PATTERN.matcher(url);
+        if (matcher.find()) {
+            return matcher.group(1);
+        }
+        return null;
+    }
+
+    // draft function to fetch entries through arxiv ID
+    public Optional<BibEntry> fetchEntryByArxivID(String arxivID) throws FetcherException {
+        try {
+            URLDownload download = new URLDownload(ARXIV_API + arxivID);
+            String response = download.asString();
+            JSONObject jsonResponse = new JSONObject(response);
+
+            JSONArray entries = jsonResponse.getJSONArray("entry");
+            if (entries.length() > 0) {
+                JSONObject entry = entries.getJSONObject(0);
+                BibEntry bibEntry = new BibEntry();
+                // need to extract bibEntries here.
+                return Optional.of(bibEntry);
+            }
+        } catch (IOException | JSONException e) {
+            LOGGER.error("Error while fetching entry from ArXiv", e);
+        }
+        return Optional.empty();
+    }
+
+
+
+    public Optional<DOI> getDoiFromUrl(String url) throws URISyntaxException, MalformedURLException, FetcherException, ParseException {
+        // Extract relevant information from the URL. This will depend on the structure of the URL.
+        URI uri = new URI(url);
+        List<NameValuePair> params = URLEncodedUtils.parse(uri, StandardCharsets.UTF_8);
+        String title = null;
+        String author = null;
+        for (NameValuePair param : params) {
+            if ("title".equals(param.getName())) {
+                title = param.getValue();
+            } else if ("author".equals(param.getName())) {
+                author = param.getValue();
+            }
+        }
+
+        // Create a BibEntry object and populate its fields.
+        BibEntry entry = new BibEntry();
+        entry.setField(StandardField.TITLE, title);
+        entry.setField(StandardField.AUTHOR, author);
+
+        // Get the CrossRef API URL for the BibEntry.
+        CrossRef crossRef = new CrossRef();
+        URL apiUrl = crossRef.getURLForEntry(entry);
+
+        // Fetch data from the CrossRef API.
+        List<BibEntry> fetchedEntries = fetchDataFromUrl(apiUrl);
+
+        // Extract the DOI.
+        return crossRef.extractIdentifier(entry, fetchedEntries);
+    }
+
+    // need logic confirmation here
+    private List<BibEntry> fetchDataFromUrl(URL apiUrl) {
+        return null;
+    }
+}
+
+