package cmd

import (
	"bytes"
	"strings"
	"testing"
)

func TestRootCmd_SingleWordRejected(t *testing.T) {
	rootCmd.SetArgs([]string{"infow"})

	var stderr bytes.Buffer
	rootCmd.SetErr(&stderr)

	err := rootCmd.Execute()
	if err == nil {
		t.Fatal("expected error for single bare word, got nil")
	}

	errMsg := err.Error()
	if !strings.Contains(errMsg, `unknown command "infow"`) {
		t.Errorf("expected error to mention unknown command, got: %s", errMsg)
	}
	if !strings.Contains(errMsg, "multiple words") {
		t.Errorf("expected error to suggest multiple words, got: %s", errMsg)
	}
}

func TestRootCmd_MultipleWordsNotRejected(t *testing.T) {
	rootCmd.SetArgs([]string{"remember", "to", "update", "dns"})

	err := rootCmd.Execute()
	// Will fail at API call (no server), but should NOT be the "unknown command" error
	if err != nil && strings.Contains(err.Error(), "unknown command") {
		t.Errorf("multi-word input should not be rejected as unknown command, got: %s", err.Error())
	}
}

func TestRootCmd_NoArgs_ShowsHelp(t *testing.T) {
	rootCmd.SetArgs([]string{})

	var stdout bytes.Buffer
	rootCmd.SetOut(&stdout)

	err := rootCmd.Execute()
	if err != nil {
		t.Fatalf("expected no error for zero args, got: %v", err)
	}

	output := stdout.String()
	if !strings.Contains(output, "Available Commands") {
		t.Errorf("expected help output, got: %s", output)
	}
}