chore(repo): initialize planarchy workspace

2026-03-14 14:31:09 +01:00
commit dd55d0e78b
769 changed files with 166461 additions and 0 deletions
@@ -0,0 +1,46 @@
+import * as XLSX from "xlsx";
+
+/**
+ * Parse an Excel (.xlsx, .xls) or CSV file to an array of row objects.
+ * Keys come from the first row (headers).
+ */
+export function parseSpreadsheet(file: File): Promise<Record<string, string>[]> {
+  return new Promise((resolve, reject) => {
+    const reader = new FileReader();
+    reader.onload = (e) => {
+      try {
+        const data = new Uint8Array(e.target!.result as ArrayBuffer);
+        const workbook = XLSX.read(data, { type: "array" });
+        const sheetName = workbook.SheetNames[0];
+        if (!sheetName) {
+          resolve([]);
+          return;
+        }
+        const sheet = workbook.Sheets[sheetName];
+        if (!sheet) {
+          resolve([]);
+          return;
+        }
+        const rows = XLSX.utils.sheet_to_json<Record<string, string>>(sheet, {
+          raw: false,
+          defval: "",
+        });
+        resolve(rows);
+      } catch (err) {
+        reject(err);
+      }
+    };
+    reader.onerror = () => reject(reader.error);
+    reader.readAsArrayBuffer(file);
+  });
+}
+
+export function isSpreadsheetFile(file: File): boolean {
+  return (
+    file.type === "application/vnd.openxmlformats-officedocument.spreadsheetml.sheet" ||
+    file.type === "application/vnd.ms-excel" ||
+    file.name.endsWith(".xlsx") ||
+    file.name.endsWith(".xls") ||
+    file.name.endsWith(".csv")
+  );
+}