From 80c21f9620b9bdc35a9a107343818fb764621e1d Mon Sep 17 00:00:00 2001
From: Chris Howey <chris@howey.me>
Date: Mon, 5 Jun 2017 12:49:35 -0500
Subject: [PATCH] add multiply and division as operations for reports

---
 cmd/lweb/handler_report.go | 16 ++++++++++++++++
 cmd/lweb/main.go           |  6 ++++--
 2 files changed, 20 insertions(+), 2 deletions(-)

diff --git a/cmd/lweb/handler_report.go b/cmd/lweb/handler_report.go
index 0d3b8c4c..94dca74e 100644
--- a/cmd/lweb/handler_report.go
+++ b/cmd/lweb/handler_report.go
@@ -144,11 +144,27 @@ func calcBalances(calcAccts []calculatedAccount, balances []*ledger.Account) (re
 					if !found {
 						aval = big.NewRat(0, 1)
 					}
+					if acctOp.MultiplicationFactor != 0 {
+						factor := big.NewRat(1, 1).SetFloat64(acctOp.MultiplicationFactor)
+						fval = fval.Mul(factor, fval)
+					}
+					oval := big.NewRat(1, 1)
+					if acctOp.SubAccount != "" {
+						for _, obal := range balances {
+							if acctOp.SubAccount == obal.Name {
+								oval = oval.Abs(obal.Balance)
+							}
+						}
+					}
 					switch acctOp.Operation {
 					case "+":
 						aval.Add(aval, fval)
 					case "-":
 						aval.Sub(aval, fval)
+					case "*":
+						aval.Mul(fval, oval)
+					case "/":
+						aval.Quo(fval, oval)
 					}
 					accVals[calcAccount.Name] = aval
 				}
diff --git a/cmd/lweb/main.go b/cmd/lweb/main.go
index 20243e24..4bdea842 100644
--- a/cmd/lweb/main.go
+++ b/cmd/lweb/main.go
@@ -58,8 +58,10 @@ func getTransactions() ([]*ledger.Transaction, error) {
 }
 
 type accountOp struct {
-	Name      string `toml:"name"`
-	Operation string `toml:"operation"` // +, -
+	Name                 string  `toml:"name"`
+	Operation            string  `toml:"operation"` // +, -
+	MultiplicationFactor float64 `toml:"factor"`
+	SubAccount           string  `toml:"other_account"` // *, /
 }
 
 type calculatedAccount struct {