reconcile csv via --csv csv

cmd/cli/config.go

@@ -18,4 +18,5 @@ type Config struct {
 	Compact   bool
 	GroupDate string
 	NoPercent bool
+	CSV       string
 }

cmd/cli/main.go

@@ -3,9 +3,11 @@ package cli
 import (
 	"bufio"
 	"context"
+	"encoding/csv"
 	"flag"
 	"fmt"
 	"io"
+	"log"
 	"maps"
 	"math"
 	"os"
@@ -35,6 +37,7 @@ func Main() {
 	fs.BoolVar(&config.Query.NoRounding, "no-rounding", false, "no rounding")
 	fs.BoolVar(&config.Compact, "c", false, "reg entries oneline")
 	fs.StringVar(&config.Query.With, "w", "", "regexp for transactions")
+	fs.StringVar(&config.CSV, "csv", "", "if csv then the csv")
 	fs.IntVar(&config.Query.Depth, "depth", 0, "depth grouping")
 	fs.BoolVar(&config.Query.Normalize, "n", false, "normalize with default normalizer")
 	fs.BoolVar(&config.Query.USDOnly, "usd", false, "filter to usd")
@@ -50,27 +53,27 @@ func Main() {
 
 	files := config.Files.Strings()
 	if len(files) == 0 {
-		panic("must specify at least one file")
+		log.Fatalf("must specify at least one file")
 	}
 	ledgerFiles, err := ledger.NewFiles(files[0], files[1:]...)
 	if err != nil {
-		panic(err)
+		log.Fatalf("%v", err)
 	}
 
 	positional := fs.Args()
 	if len(positional) == 0 || len(positional[0]) < 3 {
-		panic("positional arguments required, ie bal|reg PATTERN MATCHING")
+		log.Fatalf("positional arguments required, ie bal|reg PATTERN MATCHING")
 	}
 	cmd := positional[0]
 
 	q, err := BuildQuery(config, positional[1:])
 	if err != nil {
-		panic(err)
+		log.Fatalf("%v", err)
 	}
 
 	deltas, err := ledgerFiles.Deltas()
 	if err != nil {
-		panic(err)
+		log.Fatalf("%v", err)
 	}
 
 	if period := config.Query.Period; !period.Empty() {
@@ -98,7 +101,7 @@ func Main() {
 	if config.BPI != "" {
 		b, err := ledger.NewBPIs(config.BPI)
 		if err != nil {
-			panic(err)
+			log.Fatalf("%v", err)
 		}
 		bpis = b
 		if period := config.Query.Period; !period.Empty() {
@@ -115,12 +118,12 @@ func Main() {
 	if config.CPI != "" && config.CPIYear > 0 {
 		c, err := ledger.NewBPIs(config.CPI)
 		if err != nil {
-			panic(err)
+			log.Fatalf("%v", err)
 		}
 		cpi := c["CPI"]
 		cpiy := cpi.Lookup(fmt.Sprintf("%d-06-01", config.CPIYear))
 		if cpiy == nil {
-			panic(fmt.Errorf("no cpi for year %d", config.CPIYear))
+			log.Fatalf("no cpi for year %d", config.CPIYear)
 		}
 
 		for date, value := range cpi {
@@ -261,7 +264,7 @@ func Main() {
 		}
 		fmt.Println(asciigraph.PlotMany(points, options...))
 	case "rec": // reconcile via teller // DEAD
-		panic("dead and bad")
+		log.Fatalf("dead and bad")
 		byDate := map[string]ledger.Deltas{}
 		for _, delta := range deltas {
 			delta := delta
@@ -273,13 +276,13 @@ func Main() {
 
 		teller, err := teller.New()
 		if err != nil {
-			panic(err)
+			log.Fatalf("%v", err)
 		}
 		client := cache.New(teller)
 
 		accounts, err := client.Accounts(ctx)
 		if err != nil {
-			panic(err)
+			log.Fatalf("%v", err)
 		}
 
 		inDay := func(date string, transaction bank.Transaction) bool {
@@ -294,7 +297,7 @@ func Main() {
 		for _, acc := range accounts {
 			transactions, err := client.Transactions(ctx, acc)
 			if err != nil {
-				panic(err)
+				log.Fatalf("%v", err)
 			}
 
 			for _, transaction := range transactions {
@@ -306,7 +309,7 @@ func Main() {
 
 				ts, err := time.ParseInLocation("2006-01-02", transaction.Date, time.Local)
 				if err != nil {
-					panic(err)
+					log.Fatalf("%v", err)
 				}
 				dayBefore := ts.Add(-24 * time.Hour).Format("2006-01-02")
 				dayAfter := ts.Add(24 * time.Hour).Format("2006-01-02")
@@ -343,8 +346,76 @@ func Main() {
 				FPrintBalancesFor(transaction[0].Description, w, "\t\t", balances, cumulative, config.Query.USDOnly, config.Query.Normalize, transaction[0].Date, config.Compact, maxAccW, "%s%.2f")
 			}
 		}
+	case "csv": // reconcile with given csv
+		if config.CSV == "" {
+			log.Fatalf("missing required -csv")
+		}
+		f, err := os.Open(config.CSV)
+		if err != nil {
+			log.Fatalf("cannot open csv %q: %w", config.CSV, err)
+		}
+		defer f.Close()
+		reader := csv.NewReader(f)
+		fields, err := reader.Read()
+		if err != nil {
+			log.Fatal(err)
+		}
+
+		dateIdxs := []int{}
+		for i := range fields {
+			if strings.Contains(strings.ToLower(fields[i]), "date") {
+				dateIdxs = append(dateIdxs, i)
+			}
+		}
+
+		descIdx := slices.IndexFunc(fields, func(field string) bool {
+			return strings.Contains(strings.ToLower(field), "desc")
+		})
+
+		amountIdx := slices.IndexFunc(fields, func(field string) bool {
+			return strings.Contains(strings.ToLower(field), "amount")
+		})
+
+		for {
+			line, err := reader.Read()
+			if err == io.EOF {
+				break
+			}
+			if err != nil {
+				log.Fatalf("failed to read csv line: %w", err)
+			}
+
+			dates := []string{}
+			for _, dateIdx := range dateIdxs {
+				dates = append(dates, normalizeDate(line[dateIdx]))
+			}
+			dates = slices.Compact(dates)
+			desc := line[descIdx]
+			amount := line[amountIdx]
+
+			matches := deltas.Like(
+				func(delta ledger.Delta) bool {
+					if delta.Date < slices.Min(dates) {
+						return false
+					}
+					if delta.Date > slices.Max(dates) {
+						return false
+					}
+					if delta.Currency != ledger.USD {
+						return false
+					}
+					if fmt.Sprintf("%.2f", -1*delta.Value) != amount {
+						return false
+					}
+					return true
+				},
+			)
+			if len(matches) == 0 {
+				log.Printf("%s   %s   %s", strings.Join(dates, "="), desc, amount)
+			}
+		}
 	default:
-		panic("unknown command " + positional[0])
+		log.Fatalf("unknown command %q", positional[0])
 	}
 }
 
@@ -450,3 +521,15 @@ func FPrintBalances(w io.Writer, linePrefix string, balances, cumulatives ledger
 		}
 	}
 }
+
+func normalizeDate(date string) string {
+	for _, layout := range []string{
+		"01/02/2006",
+	} {
+		if t, err := time.Parse(layout, date); err == nil {
+			return t.Format("2006-01-02")
+		}
+	}
+	log.Fatalf("cannot normalize date %q", date)
+	return ""
+}

src/ledger/delta.go

@@ -10,6 +10,7 @@ const (
 
 type Delta struct {
 	Date        string
+	OtherDates  []string
 	Name        string
 	Value       float64
 	Currency    Currency
@@ -23,9 +24,10 @@ type Delta struct {
 	with     []Delta
 }
 
-func newDelta(transaction string, payee bool, d, desc, name string, v float64, c string, isSet bool, fileName string, lineNo int) Delta {
+func newDelta(transaction string, payee bool, d, desc, name string, v float64, c string, isSet bool, fileName string, lineNo int, otherDates []string) Delta {
 	return Delta{
 		Date:        d,
+		OtherDates:  otherDates,
 		Name:        name,
 		Value:       v,
 		Currency:    Currency(c),

src/ledger/delta_test.go

@@ -6,7 +6,7 @@ import (
 
 func TestDelta(t *testing.T) {
 	d := "2099-08-07"
-	delta := newDelta("x", true, d, "", "name", 34.56, "$", false, "", 0)
+	delta := newDelta("x", true, d, "", "name", 34.56, "$", false, "", 0, []string{"d2"})
 
 	if delta.Transaction != "x" {
 		t.Error(delta.Transaction)
@@ -17,6 +17,9 @@ func TestDelta(t *testing.T) {
 	if delta.Date != d {
 		t.Error(delta.Date)
 	}
+	if delta.OtherDates[0] != "d2" {
+		t.Error(delta.OtherDates)
+	}
 	if delta.Name != "name" {
 		t.Error(delta.Name)
 	}

src/ledger/file.go

@@ -99,8 +99,12 @@ func (files Files) add(payee string, delta Delta) error {
 	if delta.Currency != USD {
 		currencyValue = fmt.Sprintf("%.2f %s", delta.Value, delta.Currency)
 	}
+	date := delta.Date
+	for _, otherDate := range delta.OtherDates {
+		date += "=" + otherDate
+	}
 	return files.append(fmt.Sprintf("%s   %s\n%s%s%s%s\n%s%s",
-		delta.Date, delta.Description,
+		date, delta.Description,
 		filesAppendDelim, delta.Name, filesAppendDelim+filesAppendDelim+filesAppendDelim, currencyValue,
 		filesAppendDelim, payee,
 	))

src/ledger/file_test.go

@@ -73,12 +73,13 @@ func TestFileAmend(t *testing.T) {
 		},
 		"payee": {
 			from: `
-2006-01-02  description
+2006-01-02=2006-01-03  description
                recipient  $3.45
                payee
          `,
 			old: Delta{
 				Date:        "2006-01-02",
+				OtherDates:  []string{"2006-01-03"},
 				Name:        "payee",
 				Value:       -3.45,
 				Currency:    "$",
@@ -86,16 +87,17 @@ func TestFileAmend(t *testing.T) {
 			},
 			now: Delta{
 				Date:        "2106-11-12",
+				OtherDates:  []string{"2006-01-03"},
 				Name:        "1payee",
 				Value:       -13.45,
 				Currency:    "T",
 				Description: "1description",
 			},
 			want: `
-2006-01-02   description
+2006-01-02=2006-01-03   description
 	payee			$3.45
 	recipient
-2106-11-12   1description
+2106-11-12=2006-01-03   1description
 	1payee			-13.45 T
 	recipient`,
 		},

src/ledger/transaction.go

@@ -106,6 +106,7 @@ func (transaction Transaction) Payee() string {
 
 type transaction struct {
 	date        string
+	otherDates  []string
 	description string
 	payee       string
 	recipients  []transactionRecipient
@@ -142,6 +143,7 @@ func (t transaction) deltas() Deltas {
 			recipient.isSet,
 			t.fileName,
 			t.lineNo+i,
+			t.otherDates,
 		))
 	}
 	for currency, value := range sums {
@@ -162,6 +164,7 @@ func (t transaction) deltas() Deltas {
 				false,
 				t.fileName,
 				t.lineNo,
+				t.otherDates,
 			))
 		}
 	}
@@ -287,16 +290,17 @@ func _readTransaction(name string, r *bufio.Reader) (transaction, error) {
 		return transaction{}, err
 	}
 
-	dateDescriptionPattern := regexp.MustCompile(`^([0-9]+-[0-9]+-[0-9]+)\s+(.*)$`)
+	dateDescriptionPattern := regexp.MustCompile(`^([0-9]+-[0-9]+-[0-9]+)((=[0-9]+-[0-9]+-[0-9]+)*)\s+(.*)$`)
-	dateDescriptionMatches := dateDescriptionPattern.FindAllSubmatch(firstLine, 4)
+	dateDescriptionMatches := dateDescriptionPattern.FindAllStringSubmatch(string(firstLine), 4)
 	if len(dateDescriptionMatches) != 1 {
 		return transaction{}, fmt.Errorf("bad first line: %v matches: %q", len(dateDescriptionMatches), firstLine)
-	} else if len(dateDescriptionMatches[0]) != 3 {
+	} else if len(dateDescriptionMatches[0]) != 5 {
 		return transaction{}, fmt.Errorf("bad first line: %v submatches: %q", len(dateDescriptionMatches[0]), firstLine)
 	}
 	result := transaction{
-		date:        string(dateDescriptionMatches[0][1]),
+		date:        dateDescriptionMatches[0][1],
-		description: string(dateDescriptionMatches[0][2]),
+		otherDates:  strings.Split(strings.Trim(dateDescriptionMatches[0][2], "="), "="),
+		description: dateDescriptionMatches[0][4],
 		name:        name,
 	}
 

src/ledger/transaction_test.go

@@ -58,12 +58,13 @@ func TestReadTransaction(t *testing.T) {
 		},
 		"verbose": {
 			input: `
-2003-04-05            Reasoning here
+2003-04-05=2003-04-06=2003-04-07 Reasoning here
    A:B   $1.00
    C:D   $-1.00
          `,
 			want: transaction{
 				date:        "2003-04-05",
+				otherDates:  []string{"2003-04-06", "2003-04-07"},
 				description: "Reasoning here",
 				payee:       "A:B",
 				recipients: []transactionRecipient{