Initial Codes

app/config/settings.py

@@ -0,0 +1,70 @@
+"""
+App-wide settings: persists to ~/.dbclient/settings.json
+"""
+import json
+import os
+from pathlib import Path
+
+
+APP_DIR = Path.home() / ".dbclient"
+SETTINGS_FILE = APP_DIR / "settings.json"
+
+DEFAULTS = {
+    "theme": "dark",
+    "font_family": "Consolas",
+    "font_size": 13,
+    "result_page_size": 1000,
+    "query_timeout": 60,
+    "auto_commit": True,
+    "show_row_numbers": True,
+    "word_wrap": False,
+    "max_history": 500,
+}
+
+
+class Settings:
+    """Thin wrapper around a JSON settings file."""
+
+    def __init__(self):
+        self._data: dict = {}
+        self._load()
+
+    def _load(self) -> None:
+        APP_DIR.mkdir(parents=True, exist_ok=True)
+        if SETTINGS_FILE.exists():
+            try:
+                with open(SETTINGS_FILE, "r", encoding="utf-8") as f:
+                    self._data = json.load(f)
+            except Exception:
+                self._data = {}
+        # Fill in missing defaults
+        for k, v in DEFAULTS.items():
+            self._data.setdefault(k, v)
+
+    def save(self) -> None:
+        APP_DIR.mkdir(parents=True, exist_ok=True)
+        with open(SETTINGS_FILE, "w", encoding="utf-8") as f:
+            json.dump(self._data, f, indent=2)
+
+    def get(self, key: str, fallback=None):
+        return self._data.get(key, DEFAULTS.get(key, fallback))
+
+    def set(self, key: str, value) -> None:
+        self._data[key] = value
+
+    def __getitem__(self, key):
+        return self.get(key)
+
+    def __setitem__(self, key, value):
+        self.set(key, value)
+
+
+# Singleton
+_settings: Settings | None = None
+
+
+def get_settings() -> Settings:
+    global _settings
+    if _settings is None:
+        _settings = Settings()
+    return _settings