j

lib/guides/extra-sheet.ts

@@ -68,6 +68,40 @@ export type ExtraSheetCell = {
 export type ExtraSheetMatrix = Array<Array<ExtraSheetCell | undefined>>;
 type SheetPoint = { row: number; column: number };
 
+export function extraSheetUsedRange(sheet: ExtraSheet): ExtraSheet | null {
+  const usedPoints = sheet.rows.flatMap((row, rowIndex) =>
+    sheet.columns.flatMap((column, columnIndex) => {
+      const used = extraRichTextToPlainText(row.cells[column.id] ?? "").trim()
+        || row.backgrounds?.[column.id]
+        || row.alignments?.[column.id];
+      return used ? [{ row: rowIndex, column: columnIndex }] : [];
+    }),
+  );
+  if (!usedPoints.length) return null;
+
+  const rowIndexes = usedPoints.map((point) => point.row);
+  const columnIndexes = usedPoints.map((point) => point.column);
+  const firstRow = Math.min(...rowIndexes);
+  const lastRow = Math.max(...rowIndexes);
+  const firstColumn = Math.min(...columnIndexes);
+  const lastColumn = Math.max(...columnIndexes);
+
+  const columns = sheet.columns.slice(firstColumn, lastColumn + 1);
+  return {
+    columns,
+    rows: sheet.rows.slice(firstRow, lastRow + 1).map((row) => ({
+      ...row,
+      cells: Object.fromEntries(columns.map((column) => [column.id, row.cells[column.id] ?? ""])),
+      backgrounds: Object.fromEntries(columns.flatMap((column) =>
+        row.backgrounds?.[column.id] ? [[column.id, row.backgrounds[column.id]]] : [],
+      )),
+      alignments: Object.fromEntries(columns.flatMap((column) =>
+        row.alignments?.[column.id] ? [[column.id, row.alignments[column.id]]] : [],
+      )),
+    })),
+  };
+}
+
 export function nextExtraSheetColumnLabel(columns: ExtraSheet["columns"]): string {
   const labels = new Set(columns.map((column) => column.label.toLocaleLowerCase()));
   let index = columns.length + 1;
@@ -76,14 +110,14 @@ export function nextExtraSheetColumnLabel(columns: ExtraSheet["columns"]): strin
 }
 
 export function createExtraSheet(createId: (prefix: string) => string): ExtraSheet {
-  const columns = [1, 2].map((index) => ({
+  const columns = Array.from({ length: 6 }, (_, index) => ({
     id: createId("extra-sheet-column"),
-    label: `คอลัมน์ ${index}`,
+    label: `คอลัมน์ ${index + 1}`,
     width: DEFAULT_EXTRA_SHEET_COLUMN_WIDTH,
   }));
   return {
     columns,
-    rows: [1, 2].map(() => ({
+    rows: Array.from({ length: 4 }, () => ({
       id: createId("extra-sheet-row"),
       cells: Object.fromEntries(columns.map((column) => [column.id, ""])),
       backgrounds: {},