From a4237aa00cd1ef607566c1de3734e082a57226cd Mon Sep 17 00:00:00 2001
From: Natercio Moniz <natercio.moniz@gmail.com>
Date: Sat, 16 May 2026 15:38:19 +0100
Subject: [PATCH] add a csv printer

---
 cmd/any2anexoj-cli/csv_writer.go | 57 ++++++++++++++++++++++++++++++++
 cmd/any2anexoj-cli/main.go       | 22 +++++++-----
 2 files changed, 70 insertions(+), 9 deletions(-)
 create mode 100644 cmd/any2anexoj-cli/csv_writer.go

diff --git a/cmd/any2anexoj-cli/csv_writer.go b/cmd/any2anexoj-cli/csv_writer.go
new file mode 100644
index 0000000..9f31464
--- /dev/null
+++ b/cmd/any2anexoj-cli/csv_writer.go
@@ -0,0 +1,57 @@
+package main
+
+import (
+	"encoding/csv"
+	"fmt"
+	"io"
+
+	"github.com/nmoniz/any2anexoj/internal"
+)
+
+type CSVWriter struct {
+	w *csv.Writer
+}
+
+func NewCSVWriter(w io.Writer) *CSVWriter {
+	return &CSVWriter{w: csv.NewWriter(w)}
+}
+
+func (cw *CSVWriter) Render(aw *internal.AggregatorWriter) error {
+	err := cw.w.Write([]string{
+		"source_country", "code",
+		"realization_year", "realization_month", "realization_day", "realization_value",
+		"acquisition_year", "acquisition_month", "acquisition_day", "acquisition_value",
+		"expenses", "foreign_tax_paid", "counter_country",
+	})
+	if err != nil {
+		return fmt.Errorf("write csv header: %w", err)
+	}
+
+	for ri := range aw.Iter() {
+		err := cw.w.Write(reportItemToRow(ri))
+		if err != nil {
+			return fmt.Errorf("write csv row: %w", err)
+		}
+	}
+
+	cw.w.Flush()
+	return cw.w.Error()
+}
+
+func reportItemToRow(ri internal.ReportItem) []string {
+	return []string{
+		fmt.Sprintf("%d", ri.AssetCountry),
+		string(ri.Nature),
+		fmt.Sprintf("%d", ri.SellTimestamp.Year()),
+		fmt.Sprintf("%d", int(ri.SellTimestamp.Month())),
+		fmt.Sprintf("%d", ri.SellTimestamp.Day()),
+		ri.SellValue.StringFixed(2),
+		fmt.Sprintf("%d", ri.BuyTimestamp.Year()),
+		fmt.Sprintf("%d", int(ri.BuyTimestamp.Month())),
+		fmt.Sprintf("%d", ri.BuyTimestamp.Day()),
+		ri.BuyValue.StringFixed(2),
+		ri.Fees.StringFixed(2),
+		ri.Taxes.StringFixed(2),
+		fmt.Sprintf("%d", ri.BrokerCountry),
+	}
+}
diff --git a/cmd/any2anexoj-cli/main.go b/cmd/any2anexoj-cli/main.go
index 68da9b9..c2887da 100644
--- a/cmd/any2anexoj-cli/main.go
+++ b/cmd/any2anexoj-cli/main.go
@@ -22,6 +22,7 @@ var (
 	platform = pflag.StringP("platform", "p", "trading212", "One of the supported platforms")
 	lang     = pflag.StringP("language", "l", language.Portuguese.String(), "The 2 letter language code")
 	debug    = pflag.BoolP("debug", "d", false, "Activate to log debug messages")
+	format   = pflag.StringP("format", "f", "table", "Output format: table or csv")
 	ofAPIKey = pflag.String("open-figi-api-key", "", "An OpenFIGI API key for faster report generation (better rate api rate limits)")
 	// TODO: improve documentation on selectors
 	selectors = pflag.StringSlice("selectors", nil, "Only process entries that conform to all the selectors:")
@@ -80,16 +81,19 @@ func run(ctx context.Context) error {
 		return err
 	}
 
-	loc, err := NewLocalizer(*lang)
-	if err != nil {
-		return fmt.Errorf("create localizer: %w", err)
+	switch *format {
+	case "csv":
+		return NewCSVWriter(os.Stdout).Render(writer)
+	case "table":
+		loc, err := NewLocalizer(*lang)
+		if err != nil {
+			return fmt.Errorf("create localizer: %w", err)
+		}
+		NewPrettyPrinter(os.Stdout, loc).Render(writer)
+		return nil
+	default:
+		return fmt.Errorf("unsupported format %q: must be table or csv", *format)
 	}
-
-	printer := NewPrettyPrinter(os.Stdout, loc)
-
-	printer.Render(writer)
-
-	return nil
 }
 
 func getReader(platform string, ofAPIKey string) (internal.RecordReader, error) {