package cli

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

func TestHelp(t *testing.T) {
	var out, errb bytes.Buffer
	code := Run([]string{"help"}, nil, &out, &errb)
	if code != 0 || !strings.Contains(out.String(), "lectio") {
		t.Errorf("help code=%d out=%q", code, out.String())
	}
}

func TestUnknownCommand(t *testing.T) {
	var out, errb bytes.Buffer
	if code := Run([]string{"bogus"}, nil, &out, &errb); code != 2 {
		t.Errorf("unknown cmd code=%d want 2", code)
	}
}

func TestVersion(t *testing.T) {
	var out, errb bytes.Buffer
	if code := Run([]string{"--version"}, nil, &out, &errb); code != 0 {
		t.Errorf("version code=%d", code)
	}
}

// TestBadDate exercises the "date" subcommand's usage-error path (bad
// YYYY-MM-DD format) without touching the network: format validation
// happens before any fetch is attempted.
func TestBadDate(t *testing.T) {
	t.Setenv("XDG_CONFIG_HOME", t.TempDir())
	var out, errb bytes.Buffer
	if code := Run([]string{"date", "13-13-13"}, nil, &out, &errb); code != 2 {
		t.Errorf("bad date code=%d want 2 (stderr=%q)", code, errb.String())
	}
}

// TestUnknownVersion exercises "show"'s version-validation usage-error path
// without touching the network: the version code is checked against the
// five known codes before any fetch is attempted.
func TestUnknownVersion(t *testing.T) {
	t.Setenv("XDG_CONFIG_HOME", t.TempDir())
	var out, errb bytes.Buffer
	if code := Run([]string{"show", "zzz"}, nil, &out, &errb); code != 2 {
		t.Errorf("unknown version code=%d want 2 (stderr=%q)", code, errb.String())
	}
}