feat(FgForrest#3): add Deepl automation integration - default lang

Author: Stepan Kamenik

src/main/java/one/edee/babylon/MainService.java

@@ -34,7 +34,15 @@ public void startTranslation(Action action, TranslationConfiguration configurati
         switch (action) {
             case EXPORT:
                 log.info("Babylon starting...");
-                exporter.walkPathsAndWriteSheets(configuration.getPath(), configuration.getMutations(), spreadsheetId, configuration.getSnapshotPath(), configuration.getLockedCellEditors(), combineSheets, deeplApiKey);
+                exporter.walkPathsAndWriteSheets(
+                        configuration.getPath(),
+                        configuration.getMutations(),
+                        spreadsheetId,
+                        configuration.getSnapshotPath(),
+                        configuration.getLockedCellEditors(),
+                        combineSheets,
+                        deeplApiKey,
+                        configuration.getDefaultLang());
                 break;
             case IMPORT:
                 importProcessor.doImport(spreadsheetId);

src/main/java/one/edee/babylon/config/TranslationConfiguration.java

@@ -43,6 +43,12 @@ public class TranslationConfiguration implements Serializable {
 
     private List<String> lockedCellEditors = new ArrayList<>();
 
+    /**
+     * Default language of project properties.
+     */
+    @NonNull
+    private String defaultLang;
+
     @JsonIgnore
     public Path getSnapshotPath() {
         return Paths.get(dataFileName);

src/main/java/one/edee/babylon/export/Exporter.java

@@ -57,7 +57,7 @@ public void walkPathsAndWriteSheets(List<String> patternPaths,
                                         Path snapshotPath,
                                         boolean combineSheets,
                                         String deeplApiKey) {
-        walkPathsAndWriteSheets(patternPaths, translationLangs, spreadsheetId, snapshotPath, Collections.emptyList(), combineSheets, deeplApiKey);
+        walkPathsAndWriteSheets(patternPaths, translationLangs, spreadsheetId, snapshotPath, Collections.emptyList(), combineSheets, deeplApiKey, null);
     }
 
     /**
@@ -76,7 +76,8 @@ public void walkPathsAndWriteSheets(List<String> patternPaths,
                                         Path snapshotPath,
                                         List<String> lockedCellEditors,
                                         boolean combineSheets,
-                                        String deeplApiKey) {
+                                        String deeplApiKey,
+                                        String defaultLang) {
         warnDuplicatePaths(patternPaths);
 
         List<ASheet> prevSheets = listAllSheets(spreadsheetId);
@@ -135,7 +136,7 @@ public void walkPathsAndWriteSheets(List<String> patternPaths,
                                 }
 
                                 if (StringUtils.hasText(original)) {
-                                    TextResult translatedText = translator.translateText(original, null, lang);
+                                    TextResult translatedText = translator.translateText(original, defaultLang, lang);
                                     toChange.put(l, translatedText.getText());
 
                                     changed