Add translation capability, offer English and French as options

bouquin/strings.py

@@ -0,0 +1,42 @@
+from importlib.resources import files
+import json
+
+_AVAILABLE = ("en", "fr")
+_DEFAULT = "en"
+
+strings = {}
+translations = {}
+
+
+def load_strings(current_locale: str | None = None) -> None:
+    global strings, translations
+    translations = {}
+
+    # read json resources from bouquin/locales/*.json
+    root = files("bouquin") / "locales"
+    for loc in _AVAILABLE:
+        data = (root / f"{loc}.json").read_text(encoding="utf-8")
+        translations[loc] = json.loads(data)
+
+    # Load in the system's locale if not passed in somehow from settings
+    if not current_locale:
+        try:
+            from PySide6.QtCore import QLocale
+
+            current_locale = QLocale.system().name().split("_")[0]
+        except Exception:
+            current_locale = _DEFAULT
+
+    if current_locale not in translations:
+        current_locale = _DEFAULT
+
+    base = translations[_DEFAULT]
+    cur = translations.get(current_locale, {})
+    strings = {k: (cur.get(k) or base[k]) for k in base}
+
+
+def translated(k: str) -> str:
+    return strings.get(k, k)
+
+
+_ = translated