feat: add login and logout commands

cmd/login.go

@@ -0,0 +1,37 @@
+package cmd
+
+import (
+	"fmt"
+
+	"github.com/mathismqn/godeez/internal/auth"
+	"github.com/spf13/cobra"
+)
+
+var loginCmd = &cobra.Command{
+	Use:   "login",
+	Short: "Log in to Deezer with your email and password",
+	Args:  cobra.NoArgs,
+	RunE: func(cmd *cobra.Command, args []string) error {
+		if err := auth.CheckGatewayEnv(); err != nil {
+			return err
+		}
+
+		email, password, err := auth.PromptCredentials()
+		if err != nil {
+			return err
+		}
+
+		_, username, err := auth.Login(cmd.Context(), email, password)
+		if err != nil {
+			return err
+		}
+
+		fmt.Printf("Successfully logged in as %s.\n", username)
+
+		return nil
+	},
+}
+
+func init() {
+	RootCmd.AddCommand(loginCmd)
+}