func (command *LoginCommand) Execute(args []string) error {
if Fly.Target == "" {
return errors.New("name for the target must be specified (--target/-t)")
}
var client concourse.Client
var err error
if command.ATCURL != "" {
client = rc.NewUnauthenticatedClient(command.ATCURL, command.Insecure)
} else {
client, err = rc.CommandTargetClient(Fly.Target, &command.Insecure)
}
if err != nil {
return err
}
err = rc.ValidateClient(client, Fly.Target)
if err != nil {
return err
}
authMethods, err := client.ListAuthMethods()
if err != nil {
return err
}
var chosenMethod atc.AuthMethod
if command.Username != "" && command.Password != "" {
for _, method := range authMethods {
if method.Type == atc.AuthTypeBasic {
chosenMethod = method
break
}
}
if chosenMethod.Type == "" {
return errors.New("basic auth is not available")
}
} else {
switch len(authMethods) {
case 0:
return command.saveTarget(
client.URL(),
&rc.TargetToken{},
)
case 1:
chosenMethod = authMethods[0]
default:
choices := make([]interact.Choice, len(authMethods))
for i, method := range authMethods {
choices[i] = interact.Choice{
Display: method.DisplayName,
Value: method,
}
}
err = interact.NewInteraction("choose an auth method", choices...).Resolve(&chosenMethod)
if err != nil {
return err
}
}
}
return command.loginWith(chosenMethod, client)
}