Add ComputeTotalsMicros for raw micros transaction totals

Author: bufdev

internal/ibctl/ibctltransactions/ibctltransactions.go

@@ -166,6 +166,41 @@ func ComputeTotals(transactions []*TransactionOverview, formatBase func(int64) s
 	}
 }
 
+// TotalsMicros holds the raw micros totals for the transaction list, suitable for
+// further computation (e.g., applying tax rates).
+type TotalsMicros struct {
+	// DividendBaseMicros is the total dividends (including WHT) in base currency micros.
+	DividendBaseMicros int64
+	// InterestBaseMicros is the total interest income in base currency micros.
+	InterestBaseMicros int64
+	// PnLBaseMicros is the total realized P&L in base currency micros.
+	PnLBaseMicros int64
+	// STCGBaseMicros is the total short-term capital gain in base currency micros.
+	STCGBaseMicros int64
+	// LTCGBaseMicros is the total long-term capital gain in base currency micros.
+	LTCGBaseMicros int64
+}
+
+// ComputeTotalsMicros sums the dividend, interest, P&L, STCG, and LTCG columns
+// across all transactions, returning raw micros values for further computation.
+func ComputeTotalsMicros(transactions []*TransactionOverview) *TotalsMicros {
+	var dividend, interest, pnl, stcg, ltcg int64
+	for _, t := range transactions {
+		dividend += mathpb.ParseMicros(t.DividendBase)
+		interest += mathpb.ParseMicros(t.InterestBase)
+		pnl += mathpb.ParseMicros(t.PnLBase)
+		stcg += mathpb.ParseMicros(t.STCGBase)
+		ltcg += mathpb.ParseMicros(t.LTCGBase)
+	}
+	return &TotalsMicros{
+		DividendBaseMicros: dividend,
+		InterestBaseMicros: interest,
+		PnLBaseMicros:      pnl,
+		STCGBaseMicros:     stcg,
+		LTCGBaseMicros:     ltcg,
+	}
+}
+
 // GetTransactionList computes the unified transaction list from all data sources.
 // baseCurrency is the target currency for conversion (e.g., "USD", "CAD").
 // fromDate and toDate filter on the transaction date (inclusive). Zero dates mean no filter.