Add script for updating translations

Still a manual process, but better than updating the json line by line.
I'm undecided on automating this anytime the translation json gets
updated, since it could possibly ratelimit lingva instances.

misc/update-translations.py

@@ -0,0 +1,67 @@
+import json
+import pathlib
+import requests
+
+lingva = 'https://lingva.ml/api/v1/en'
+
+
+def format_lang(lang: str) -> str:
+    # Chinese (traditional and simplified) require
+    # a different format for lingva translations
+    if 'zh-' in lang:
+        if lang == 'zh-TW':
+            return 'zh_HANT'
+        return 'zh'
+
+    # Strip lang prefix to leave only the actual
+    # language code (i.e. 'en', 'fr', etc)
+    return lang.replace('lang_', '')
+
+
+def translate(v: str, lang: str) -> str:
+    # Strip lang prefix to leave only the actual
+    #language code (i.e. "es", "fr", etc)
+    lang = format_lang(lang)
+
+    lingva_req = f'{lingva}/{lang}/{v}'
+
+    response = requests.get(lingva_req).json()
+
+    if 'translation' in response:
+        return response['translation']
+    return ''
+
+
+if __name__ == '__main__':
+    file_path = pathlib.Path(__file__).parent.resolve()
+    tl_path = 'app/static/settings/translations.json'
+
+    with open(f'{file_path}/../{tl_path}', 'r+', encoding='utf-8') as tl_file:
+        tl_data = json.load(tl_file)
+
+        # If there are any english translations that don't
+        # exist for other languages, extract them and translate
+        # them now
+        en_tl = tl_data['lang_en']
+        for k, v in en_tl.items():
+            for lang in tl_data:
+                if lang == 'lang_en' or k in tl_data[lang]:
+                    continue
+
+                translation = ''
+                if len(k) == 0:
+                    # Special case for placeholder text that gets used
+                    # for translations without any key present
+                    translation = v
+                else:
+                    # Translate the string using lingva
+                    translation = translate(v, lang)
+
+                if len(translation) == 0:
+                    print(f'! Unable to translate {lang}[{k}]')
+                    continue
+                print(f'{lang}[{k}] = {translation}')
+                tl_data[lang][k] = translation
+
+        # Write out updated translations json
+        print(json.dumps(tl_data, indent=4, ensure_ascii=False))