ADD: added first version

internal/backtest/result.go

@@ -0,0 +1,32 @@
+package backtest
+
+import (
+	"alpaca-bot/internal/model"
+	"fmt"
+
+	"github.com/xuri/excelize/v2"
+)
+
+func ExportToExcel(trades []model.Trade, path string) error {
+	f := excelize.NewFile()
+	sheet := "Backtest"
+	f.NewSheet(sheet)
+
+	headers := []string{"Time", "Symbol", "Side", "Price", "Qty", "Cash"}
+	for i, h := range headers {
+		cell, _ := excelize.CoordinatesToCellName(i+1, 1)
+		f.SetCellValue(sheet, cell, h)
+	}
+
+	for i, t := range trades {
+		row := i + 2
+		f.SetCellValue(sheet, fmt.Sprintf("A%d", row), t.Time)
+		f.SetCellValue(sheet, fmt.Sprintf("B%d", row), t.Symbol)
+		f.SetCellValue(sheet, fmt.Sprintf("C%d", row), t.Side)
+		f.SetCellValue(sheet, fmt.Sprintf("D%d", row), t.Price)
+		f.SetCellValue(sheet, fmt.Sprintf("E%d", row), t.Qty)
+		f.SetCellValue(sheet, fmt.Sprintf("F%d", row), t.Cash)
+	}
+
+	return f.SaveAs(path)
+}