feat: 补充结算批次财务汇总并返回投注与利润数据

app/Support/SettlementBatchFinancialSummary.php

@@ -0,0 +1,30 @@
+<?php
+
+namespace App\Support;
+
+use App\Models\SettlementBatch;
+
+final class SettlementBatchFinancialSummary
+{
+    /**
+     * @return array{total_bet_amount: int, total_actual_deduct: int, platform_profit: int}
+     */
+    public static function forBatch(SettlementBatch $batch): array
+    {
+        $totals = $batch->details()
+            ->join('ticket_items', 'ticket_items.id', '=', 'ticket_settlement_details.ticket_item_id')
+            ->selectRaw('COALESCE(SUM(ticket_items.total_bet_amount), 0) as total_bet_amount')
+            ->selectRaw('COALESCE(SUM(ticket_items.actual_deduct_amount), 0) as total_actual_deduct')
+            ->first();
+
+        $totalBet = (int) ($totals?->total_bet_amount ?? 0);
+        $totalActualDeduct = (int) ($totals?->total_actual_deduct ?? 0);
+        $totalPayout = (int) $batch->total_payout_amount;
+
+        return [
+            'total_bet_amount' => $totalBet,
+            'total_actual_deduct' => $totalActualDeduct,
+            'platform_profit' => $totalActualDeduct - $totalPayout,
+        ];
+    }
+}