basic internal structure

internal/shell/currency.go

@@ -0,0 +1,44 @@
+package shell
+
+import (
+	"Portifolio/internal/model"
+	"Portifolio/internal/service"
+	"bufio"
+	"database/sql"
+	"fmt"
+	"strings"
+
+	_ "github.com/mattn/go-sqlite3"
+)
+
+func AddCurrency(scanner *bufio.Scanner, db *sql.DB) {
+	input := model.CurrencyInput{}
+
+	fmt.Print("  Code (e.g. DKK): ")
+	scanner.Scan()
+	input.Code = strings.ToUpper(strings.TrimSpace(scanner.Text()))
+
+	fmt.Print("  Name (e.g. Danish Krone): ")
+	scanner.Scan()
+	input.Name = strings.TrimSpace(scanner.Text())
+
+	id, err := service.InsertCurrency(db, input)
+	if err != nil {
+		fmt.Println("  ✗ Error:", err)
+		return
+	}
+	fmt.Printf("  ✓ Currency '%s' (%s) added with ID %d\n", input.Name, input.Code, id)
+}
+
+func ListCurrencies(db *sql.DB) {
+	currencies, err := service.GetAllCurrencies(db)
+	if err != nil {
+		fmt.Println("  ✗ Error:", err)
+		return
+	}
+	fmt.Printf("  %-5s %-6s %s\n", "ID", "CODE", "NAME")
+	fmt.Println("  " + strings.Repeat("-", 30))
+	for _, c := range currencies {
+		fmt.Printf("  %-5d %-6s %s\n", c.ID, c.Code, c.Name)
+	}
+}