feat : update excel

lib/guides/extra-sheet.test.ts

@@ -12,6 +12,7 @@ import {
   moveExtraSheetColumn,
   moveExtraSheetRow,
   normalizeExtraSheetRichText,
+  styleExtraSheetCells,
   updateExtraSheetCell,
   updateExtraSheetCells,
   type ExtraSheet,
@@ -124,6 +125,23 @@ describe("Extra sheet", () => {
       .rows[0].backgrounds).toEqual({});
   });
 
+  it("styles selected cells without replacing their individual text", () => {
+    const sheet = createExtraSheet(idFactory());
+    const firstColumn = sheet.columns[0].id;
+    const secondColumn = sheet.columns[1].id;
+    sheet.rows[0].cells[firstColumn] = "<p>Alpha</p>";
+    sheet.rows[1].cells[secondColumn] = "<p><em>Beta</em></p>";
+
+    const styled = styleExtraSheetCells(sheet, [
+      { row: 0, column: 0 },
+      { row: 1, column: 1 },
+    ], { bold: true });
+
+    expect(styled.rows[0].cells[firstColumn]).toBe("<p><strong>Alpha</strong></p>");
+    expect(styled.rows[1].cells[secondColumn]).toBe("<p><em><strong>Beta</strong></em></p>");
+    expect(styled.rows[0].cells[secondColumn]).toBe("");
+  });
+
   it("renders legacy sheets that do not have background metadata yet", () => {
     const sheet = createExtraSheet(idFactory());
     const legacy = {

lib/guides/extra-sheet.ts

@@ -1,6 +1,10 @@
 import * as z from "zod";
 
-import { normalizeExtraRichText } from "@/lib/rich-text";
+import {
+  applyRichTextStylePatch,
+  normalizeExtraRichText,
+  type RichTextStylePatch,
+} from "@/lib/rich-text";
 
 const extraSheetId = z.string().min(1).max(128);
 
@@ -213,6 +217,29 @@ export function updateExtraSheetCells(
   };
 }
 
+export function styleExtraSheetCells(
+  sheet: ExtraSheet,
+  points: Iterable<SheetPoint>,
+  patch: RichTextStylePatch,
+): ExtraSheet {
+  const selected = new Set(Array.from(points, ({ row, column }) => `${row}:${column}`));
+  return {
+    ...sheet,
+    rows: sheet.rows.map((row, rowIndex) => ({
+      ...row,
+      cells: Object.fromEntries(Object.entries(row.cells).map(([columnId, value]) => {
+        const columnIndex = sheet.columns.findIndex((column) => column.id === columnId);
+        return [
+          columnId,
+          selected.has(`${rowIndex}:${columnIndex}`)
+            ? applyRichTextStylePatch(value, patch)
+            : value,
+        ];
+      })),
+    })),
+  };
+}
+
 export function normalizeExtraSheetRichText(sheet: ExtraSheet): ExtraSheet {
   return {
     ...sheet,