feat(core): allow merging translations from per-layout JSONs

core/translations/crowdin.py

@@ -1,4 +1,7 @@
+from __future__ import annotations
+
 from pathlib import Path
+import collections
 import json
 
 import click
@@ -46,5 +49,35 @@ def prepare() -> None:
     click.echo(f"Successfully generated layout-specific translation files in '{CROWDIN_DIR}'")
 
 
+@cli.command()
+def merge() -> None:
+    """Merge back translation files downloaded from Crowdin."""
+    tdir = TranslationsDir()
+
+    for lang in sorted(tdir.all_languages()):
+        merged_translations: dict[str, str | dict[str, str]] = collections.defaultdict(dict)
+        for layout_type in ALL_LAYOUTS:
+            with open(CROWDIN_DIR / f"{lang}_{layout_type.name}.json", "r") as f:
+                blob_json = json.load(f)
+
+            # mapping string name to its translation (for the current layout)
+            layout_specific_translations: dict[str, str] = blob_json["translations"]
+            for key, value in layout_specific_translations.items():
+                merged_translations[key][layout_type.name] = value
+
+        for key in merged_translations.keys():
+            # deduplicate entries if all translations are the same
+            unique_translations = set(merged_translations[key].values())
+            if len(unique_translations) == 1:
+                merged_translations[key] = unique_translations.pop()
+
+        blob_json = tdir.load_lang(lang)
+        blob_json["translations"] = merged_translations
+        tdir.save_lang(lang, blob_json)
+        click.echo(f"Updated {lang}")
+
+    click.echo(f"Successfully merged back layout-specific translation files from '{CROWDIN_DIR}'")
+
+
 if __name__ == "__main__":
     cli()