feat: add buildRows for cashbox export row filtering

myteamwallet_backend/src/cashbox-export/cashbox-export.utils.ts

@@ -0,0 +1,61 @@
+import { Team } from 'src/teams/entities/team.entity';
+
+export interface CashboxExportRow {
+  date: string;
+  type: string;
+  who: string;
+  note: string;
+  amount: number;
+  runningTotal: number;
+}
+
+interface RawRow {
+  date: string;
+  type: string;
+  who: string;
+  note: string;
+  amount: number;
+}
+
+export function buildRows(team: Team, from: string, to: string): CashboxExportRow[] {
+  const fromTime = new Date(`${from}T00:00:00.000Z`).getTime();
+  const toTime = new Date(`${to}T23:59:59.999Z`).getTime();
+
+  const raw: RawRow[] = [];
+
+  for (const transaction of team.transactions ?? []) {
+    raw.push({
+      date: transaction.date,
+      type: transaction.type.name,
+      who: 'Teamkasse',
+      note: transaction.note,
+      amount: Number(transaction.amount),
+    });
+  }
+
+  for (const player of team.players ?? []) {
+    for (const transaction of player.transactions ?? []) {
+      if (transaction.type.name !== 'payment') continue;
+      raw.push({
+        date: transaction.date,
+        type: transaction.type.name,
+        who: `${player.firstName} ${player.lastName}`,
+        note: transaction.note,
+        amount: Number(transaction.amount),
+      });
+    }
+  }
+
+  const filtered = raw
+    .filter((row) => {
+      const time = new Date(row.date).getTime();
+      return time >= fromTime && time <= toTime;
+    })
+    .sort((a, b) => (a.date < b.date ? -1 : a.date > b.date ? 1 : 0));
+
+  let runningTotal = 0;
+  return filtered.map((row) => {
+    runningTotal += row.amount;
+    return { ...row, runningTotal };
+  });
+}