v4.0.11HQ后端优化（快链、账单日等）

2026-09-02 15:45:12 +08:00
parent 1000b489a0
commit 6880b5daf4
31 changed files with 1014 additions and 402 deletions
@@ -0,0 +1,48 @@
+export type ExportColumnDef<T> = {
+  key: string;
+  header: string;
+  value: (row: T) => string | number;
+};
+
+/** 按请求的列 key 过滤导出列；未传则导出全部 */
+export function pickExportColumns<T>(
+  defs: ExportColumnDef<T>[],
+  requestedKeys?: string[],
+): ExportColumnDef<T>[] {
+  if (!requestedKeys?.length) return defs;
+  const byKey = new Map(defs.map((d) => [d.key, d]));
+  return requestedKeys.map((k) => byKey.get(k)).filter((d): d is ExportColumnDef<T> => !!d);
+}
+
+export function parseExportColumnKeys(raw?: string): string[] | undefined {
+  if (!raw?.trim()) return undefined;
+  const keys = raw
+    .split(',')
+    .map((k) => k.trim())
+    .filter(Boolean);
+  return keys.length ? keys : undefined;
+}
+
+export function buildCsvFromColumns<T>(
+  defs: ExportColumnDef<T>[],
+  rows: T[],
+  requestedKeys?: string[],
+): { csv: string; count: number } {
+  const active = pickExportColumns(defs, requestedKeys);
+  if (!active.length) {
+    return { csv: '\uFEFF', count: 0 };
+  }
+  const header = active.map((d) => d.header).join(',');
+  const body = rows.map((row) =>
+    active
+      .map((d) => {
+        const v = d.value(row);
+        const s = v == null ? '' : String(v);
+        return s.includes(',') || s.includes('"') || s.includes('\n')
+          ? `"${s.replace(/"/g, '""')}"`
+          : s;
+      })
+      .join(','),
+  );
+  return { csv: `\uFEFF${[header, ...body].join('\n')}`, count: rows.length };
+}