fix(settings): preserve editor font after UI font changes

apps/desktop/src/lib/settings/editorSettingsDraft.ts

@@ -0,0 +1,84 @@
+import type { EditorSettings } from "@/stores/settingsStore";
+
+export const EDITOR_SETTINGS_DRAFT_KEYS = [
+  "fontFamily",
+  "fontSize",
+  "uiFontFamily",
+  "uiScale",
+  "theme",
+  "customThemes",
+  "activeCustomThemeId",
+  "executeMode",
+  "showExecutionTargetPicker",
+  "showStatementRunButtons",
+  "showCurrentStatementFrame",
+  "autoAliasTables",
+  "wordWrap",
+  "vimModeEnabled",
+  "autoCloseBrackets",
+  "sqlSemanticDiagnosticsMode",
+  "confirmDangerousSqlExecution",
+  "confirmUnsavedSqlClose",
+  "appLayout",
+  "showColumnCommentsInHeader",
+  "showColumnTypesInHeader",
+  "compactColumnHeaderActions",
+  "dataGridQuickEntry",
+  "infiniteScroll",
+  "infiniteScrollMaxRows",
+  "tableColumnTemplateFields",
+  "shortcuts",
+  "sqlFormatter",
+  "sidebarActivation",
+  "sidebarObjectDisplay",
+  "sidebarTableSearchEnabled",
+  "autoSelectActiveSidebarNode",
+  "openTabsRestoreMode",
+  "disconnectTabHandlingMode",
+  "reuseDataTab",
+  "updateNotificationsEnabled",
+  "sidebarHideTableComments",
+  "sidebarAllowHorizontalScroll",
+  "sidebarHiddenTablePrefixes",
+  "exportBatchSize",
+  "exportRowLimitEnabled",
+  "exportRowLimit",
+  "queryExportKeysetOptimizationEnabled",
+  "updateDownloadSource",
+  "toolbarItems",
+  "snippets",
+] as const satisfies readonly (keyof EditorSettings)[];
+
+export type EditorSettingsDraftKey = (typeof EDITOR_SETTINGS_DRAFT_KEYS)[number];
+export type EditorSettingsDraft = Pick<EditorSettings, EditorSettingsDraftKey>;
+
+function cloneDraftValue<T>(value: T): T {
+  if (value === null || typeof value !== "object") return value;
+  return JSON.parse(JSON.stringify(value)) as T;
+}
+
+function draftValueChanged(a: unknown, b: unknown): boolean {
+  return JSON.stringify(a) !== JSON.stringify(b);
+}
+
+export function editorSettingsDraftFromSettings(settings: EditorSettings): EditorSettingsDraft {
+  const draft = {} as EditorSettingsDraft;
+  for (const key of EDITOR_SETTINGS_DRAFT_KEYS) {
+    draft[key] = cloneDraftValue(settings[key]) as never;
+  }
+  return draft;
+}
+
+export function editorSettingsPatchFromDraft(draft: EditorSettingsDraft, base: EditorSettingsDraft): Partial<EditorSettings> {
+  const patch: Partial<EditorSettings> = {};
+  for (const key of EDITOR_SETTINGS_DRAFT_KEYS) {
+    if (draftValueChanged(draft[key], base[key])) {
+      patch[key] = cloneDraftValue(draft[key]) as never;
+    }
+  }
+  return patch;
+}
+
+export function editorSettingsDraftChanged(draft: EditorSettingsDraft, base: EditorSettingsDraft): boolean {
+  return EDITOR_SETTINGS_DRAFT_KEYS.some((key) => draftValueChanged(draft[key], base[key]));
+}