deltas now accept currency, description, and break payee from all recipients

ledger/file.go

@@ -1,9 +1,9 @@
 package ledger
 
 import (
+	"io"
 	"os"
-
-	"github.com/howeyc/ledger"
+	"time"
 )
 
 type File string
@@ -21,23 +21,54 @@ func (file File) Deltas(like ...Like) ([]Delta, error) {
 	}
 	result := make([]Delta, 0, len(transactions)*2)
 	for _, transaction := range transactions {
-		for _, acc := range transaction.AccountChanges {
-			value, _ := acc.Balance.Float64()
-			delta := newDelta(transaction.Date, acc.Name, value)
-			if !likes(like).all(delta) {
-				continue
+		sums := map[string]float64{}
+		for _, acc := range transaction.recipients {
+			sums[acc.currency] += acc.value
+			delta := newDelta(
+				transaction.date,
+				transaction.description,
+				acc.name,
+				acc.value,
+				acc.currency,
+			)
+			if likes(like).all(delta) {
+				result = append(result, delta)
+			}
+		}
+		for currency, value := range sums {
+			delta := newDelta(
+				transaction.date,
+				transaction.description,
+				transaction.payee,
+				value,
+				currency,
+			)
+			if likes(like).all(delta) {
+				result = append(result, delta)
 			}
-			result = append(result, delta)
 		}
 	}
 	return result, nil
 }
 
-func (file File) transactions() ([]*ledger.Transaction, error) {
+type transaction struct {
+	date        time.Time
+	description string
+	payee       string
+	recipients  []transactionRecipient
+}
+
+type transactionRecipient struct {
+	name     string
+	value    float64
+	currency string
+}
+
+func (file File) transactions() ([]transaction, error) {
 	f, err := os.Open(string(file))
 	if err != nil {
 		return nil, err
 	}
 	defer f.Close()
-	return ledger.ParseLedger(f)
+	return nil, io.EOF
 }