package cmd

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

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)
	}
}

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

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

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

	errMsg := err.Error()
	if !strings.Contains(errMsg, "unknown command") {
		t.Errorf("expected 'unknown command' error, got: %s", errMsg)
	}
}

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

	err := rootCmd.Execute()
	if err == nil {
		t.Fatal("expected error for addnote with no args, got nil")
	}

	errMsg := err.Error()
	if !strings.Contains(errMsg, "requires a note text argument") {
		t.Errorf("expected 'requires a note text argument' error, got: %s", errMsg)
	}
}

func TestAddnoteCmd_TooManyArgs_ReturnsError(t *testing.T) {
	rootCmd.SetArgs([]string{"addnote", "hello", "world"})

	err := rootCmd.Execute()
	if err == nil {
		t.Fatal("expected error for addnote with too many args, got nil")
	}

	errMsg := err.Error()
	if !strings.Contains(errMsg, "quote your note text") {
		t.Errorf("expected 'accepts 1 arg' error, got: %s", errMsg)
	}
}