Refactor Settings, FileTree, GitPanel, Shell, and CodeEditor components (#402)

src/components/code-editor/hooks/useCodeEditorSettings.ts

@@ -0,0 +1,85 @@
+import { useEffect, useState } from 'react';
+import {
+  CODE_EDITOR_DEFAULTS,
+  CODE_EDITOR_SETTINGS_CHANGED_EVENT,
+  CODE_EDITOR_STORAGE_KEYS,
+} from '../constants/settings';
+
+const readTheme = () => {
+  const savedTheme = localStorage.getItem(CODE_EDITOR_STORAGE_KEYS.theme);
+  if (!savedTheme) {
+    return CODE_EDITOR_DEFAULTS.isDarkMode;
+  }
+
+  return savedTheme === 'dark';
+};
+
+const readBoolean = (storageKey: string, defaultValue: boolean, falseValue = 'false') => {
+  const value = localStorage.getItem(storageKey);
+  if (value === null) {
+    return defaultValue;
+  }
+
+  return value !== falseValue;
+};
+
+const readWordWrap = () => {
+  return localStorage.getItem(CODE_EDITOR_STORAGE_KEYS.wordWrap) === 'true';
+};
+
+const readFontSize = () => {
+  const stored = localStorage.getItem(CODE_EDITOR_STORAGE_KEYS.fontSize);
+  return Number(stored ?? CODE_EDITOR_DEFAULTS.fontSize);
+};
+
+export const useCodeEditorSettings = () => {
+  const [isDarkMode, setIsDarkMode] = useState(readTheme);
+  const [wordWrap, setWordWrap] = useState(readWordWrap);
+  const [minimapEnabled, setMinimapEnabled] = useState(() => (
+    readBoolean(CODE_EDITOR_STORAGE_KEYS.showMinimap, CODE_EDITOR_DEFAULTS.minimapEnabled)
+  ));
+  const [showLineNumbers, setShowLineNumbers] = useState(() => (
+    readBoolean(CODE_EDITOR_STORAGE_KEYS.lineNumbers, CODE_EDITOR_DEFAULTS.showLineNumbers)
+  ));
+  const [fontSize, setFontSize] = useState(readFontSize);
+
+  // Keep legacy behavior where the editor writes theme and wrap settings directly.
+  useEffect(() => {
+    localStorage.setItem(CODE_EDITOR_STORAGE_KEYS.theme, isDarkMode ? 'dark' : 'light');
+  }, [isDarkMode]);
+
+  useEffect(() => {
+    localStorage.setItem(CODE_EDITOR_STORAGE_KEYS.wordWrap, String(wordWrap));
+  }, [wordWrap]);
+
+  useEffect(() => {
+    const refreshFromStorage = () => {
+      setIsDarkMode(readTheme());
+      setWordWrap(readWordWrap());
+      setMinimapEnabled(readBoolean(CODE_EDITOR_STORAGE_KEYS.showMinimap, CODE_EDITOR_DEFAULTS.minimapEnabled));
+      setShowLineNumbers(readBoolean(CODE_EDITOR_STORAGE_KEYS.lineNumbers, CODE_EDITOR_DEFAULTS.showLineNumbers));
+      setFontSize(readFontSize());
+    };
+
+    window.addEventListener('storage', refreshFromStorage);
+    window.addEventListener(CODE_EDITOR_SETTINGS_CHANGED_EVENT, refreshFromStorage);
+
+    return () => {
+      window.removeEventListener('storage', refreshFromStorage);
+      window.removeEventListener(CODE_EDITOR_SETTINGS_CHANGED_EVENT, refreshFromStorage);
+    };
+  }, []);
+
+  return {
+    isDarkMode,
+    setIsDarkMode,
+    wordWrap,
+    setWordWrap,
+    minimapEnabled,
+    setMinimapEnabled,
+    showLineNumbers,
+    setShowLineNumbers,
+    fontSize,
+    setFontSize,
+  };
+};