package cli

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

func TestRunRootHelp(t *testing.T) {
	var stdout bytes.Buffer
	var stderr bytes.Buffer

	exitCode := Run([]string{"--help"}, &stdout, &stderr)
	if exitCode != 0 {
		t.Fatalf("expected exit code 0, got %d", exitCode)
	}
	if !strings.Contains(stdout.String(), "audita <command> [options]") {
		t.Fatalf("expected root usage in stdout, got %q", stdout.String())
	}
	if !strings.Contains(stdout.String(), "process") {
		t.Fatalf("expected process command in root help, got %q", stdout.String())
	}
	if stderr.Len() != 0 {
		t.Fatalf("expected empty stderr, got %q", stderr.String())
	}
}

func TestRunProcessHelp(t *testing.T) {
	var stdout bytes.Buffer
	var stderr bytes.Buffer

	exitCode := Run([]string{"process", "--help"}, &stdout, &stderr)
	if exitCode != 0 {
		t.Fatalf("expected exit code 0, got %d", exitCode)
	}
	if !strings.Contains(stdout.String(), "audita process <transcript.json> [flags]") {
		t.Fatalf("expected process usage in stdout, got %q", stdout.String())
	}
	if !strings.Contains(stdout.String(), "--glossary") {
		t.Fatalf("expected glossary flag in process help, got %q", stdout.String())
	}
	if stderr.Len() != 0 {
		t.Fatalf("expected empty stderr, got %q", stderr.String())
	}
}

func TestRunUnknownCommand(t *testing.T) {
	var stdout bytes.Buffer
	var stderr bytes.Buffer

	exitCode := Run([]string{"unknown"}, &stdout, &stderr)
	if exitCode != 2 {
		t.Fatalf("expected exit code 2, got %d", exitCode)
	}
	if stdout.Len() != 0 {
		t.Fatalf("expected empty stdout, got %q", stdout.String())
	}
	if !strings.Contains(stderr.String(), "unknown command") {
		t.Fatalf("expected unknown command error in stderr, got %q", stderr.String())
	}
}

func TestRunProcessNotImplemented(t *testing.T) {
	var stdout bytes.Buffer
	var stderr bytes.Buffer

	exitCode := Run([]string{"process", "transcript.json"}, &stdout, &stderr)
	if exitCode == 0 {
		t.Fatalf("expected nonzero exit code for not-implemented process")
	}
	if stdout.Len() != 0 {
		t.Fatalf("expected empty stdout, got %q", stdout.String())
	}
	if !strings.Contains(stderr.String(), processNotImplementedMessage) {
		t.Fatalf("expected not-implemented message in stderr, got %q", stderr.String())
	}
}