package browser

import (
	"context"
	"os"
	"path/filepath"
	"testing"
	"time"
)

func TestLaunchBrowser(t *testing.T) {
	ctx := context.Background()

	// Crear directorio temporal para perfiles
	tempDir := t.TempDir()

	config := DefaultConfig()
	config.ProfilesBaseDir = tempDir
	config.ProfileName = "test-launch"
	config.StealthFlags.Headless = true
	config.StartTimeout = 15 * time.Second

	// Lanzar navegador
	b, err := Launch(ctx, config)
	if err != nil {
		t.Fatalf("Failed to launch browser: %v", err)
	}
	defer b.Close()

	// Verificar que el perfil se creó
	profilePath := filepath.Join(tempDir, "test-launch")
	if _, err := os.Stat(profilePath); os.IsNotExist(err) {
		t.Errorf("Profile directory not created: %s", profilePath)
	}

	// Verificar que tenemos debug URL
	if b.DebugURL() == "" {
		t.Error("Debug URL is empty")
	}

	// Verificar que tenemos target ID
	if b.TargetID() == "" {
		t.Error("Target ID is empty")
	}
}

func TestNavigate(t *testing.T) {
	ctx := context.Background()

	tempDir := t.TempDir()
	config := DefaultConfig()
	config.ProfilesBaseDir = tempDir
	config.ProfileName = "test-navigate"
	config.StealthFlags.Headless = true

	b, err := Launch(ctx, config)
	if err != nil {
		t.Fatalf("Failed to launch browser: %v", err)
	}
	defer b.Close()

	// Navegar a example.com
	opts := DefaultNavigateOptions()
	opts.Timeout = 15 * time.Second

	err = b.Navigate(ctx, "https://example.com", opts)
	if err != nil {
		t.Fatalf("Failed to navigate: %v", err)
	}

	// Verificar que estamos en la página correcta
	result, err := b.Evaluate(ctx, "window.location.href")
	if err != nil {
		t.Fatalf("Failed to evaluate location: %v", err)
	}

	url, ok := result.Value.(string)
	if !ok || url != "https://example.com/" {
		t.Errorf("Expected URL https://example.com/, got %v", result.Value)
	}
}

func TestScreenshot(t *testing.T) {
	ctx := context.Background()

	tempDir := t.TempDir()
	config := DefaultConfig()
	config.ProfilesBaseDir = tempDir
	config.ProfileName = "test-screenshot"
	config.StealthFlags.Headless = true

	b, err := Launch(ctx, config)
	if err != nil {
		t.Fatalf("Failed to launch browser: %v", err)
	}
	defer b.Close()

	// Navegar
	opts := DefaultNavigateOptions()
	opts.Timeout = 15 * time.Second
	if err := b.Navigate(ctx, "https://example.com", opts); err != nil {
		t.Logf("Navigation warning: %v", err)
	}

	// Tomar screenshot
	screenshot, err := b.Screenshot(ctx, false)
	if err != nil {
		t.Fatalf("Failed to take screenshot: %v", err)
	}

	// Verificar que tiene contenido
	if len(screenshot) == 0 {
		t.Error("Screenshot is empty")
	}

	// Verificar que es PNG válido (empieza con magic bytes)
	if len(screenshot) < 8 || screenshot[0] != 0x89 || screenshot[1] != 0x50 {
		t.Error("Screenshot is not a valid PNG")
	}
}

func TestEvaluate(t *testing.T) {
	ctx := context.Background()

	tempDir := t.TempDir()
	config := DefaultConfig()
	config.ProfilesBaseDir = tempDir
	config.ProfileName = "test-evaluate"
	config.StealthFlags.Headless = true

	b, err := Launch(ctx, config)
	if err != nil {
		t.Fatalf("Failed to launch browser: %v", err)
	}
	defer b.Close()

	// Navegar
	opts := DefaultNavigateOptions()
	opts.Timeout = 15 * time.Second
	if err := b.Navigate(ctx, "https://example.com", opts); err != nil {
		t.Logf("Navigation warning: %v", err)
	}

	// Evaluar JavaScript
	result, err := b.Evaluate(ctx, "2 + 2")
	if err != nil {
		t.Fatalf("Failed to evaluate: %v", err)
	}

	// Verificar resultado
	val, ok := result.Value.(float64)
	if !ok || val != 4 {
		t.Errorf("Expected 4, got %v", result.Value)
	}
}

func TestStealthFlags(t *testing.T) {
	ctx := context.Background()

	tempDir := t.TempDir()
	config := DefaultConfig()
	config.ProfilesBaseDir = tempDir
	config.ProfileName = "test-stealth"
	config.StealthFlags.Headless = true

	b, err := Launch(ctx, config)
	if err != nil {
		t.Fatalf("Failed to launch browser: %v", err)
	}
	defer b.Close()

	// Navegar
	opts := DefaultNavigateOptions()
	opts.Timeout = 15 * time.Second
	if err := b.Navigate(ctx, "https://example.com", opts); err != nil {
		t.Logf("Navigation warning: %v", err)
	}

	// Verificar navigator.webdriver = false
	result, err := b.Evaluate(ctx, "navigator.webdriver")
	if err != nil {
		t.Fatalf("Failed to evaluate webdriver: %v", err)
	}

	// Debe ser false o undefined
	if result.Value != false && result.Value != nil {
		t.Errorf("navigator.webdriver should be false, got %v", result.Value)
	}

	// Verificar window.chrome existe
	chromeExists, err := b.Evaluate(ctx, "typeof window.chrome !== 'undefined'")
	if err != nil {
		t.Fatalf("Failed to check chrome object: %v", err)
	}

	if chromeExists.Value != true {
		t.Error("window.chrome should exist")
	}
}

func TestRecorder(t *testing.T) {
	tempDir := t.TempDir()
	recordFile := filepath.Join(tempDir, "test-recording.log")

	recorder, err := NewRecorder(recordFile)
	if err != nil {
		t.Fatalf("Failed to create recorder: %v", err)
	}
	defer recorder.Close()

	// Registrar acción
	recorder.Record("TestAction", map[string]interface{}{
		"param1": "value1",
		"param2": 123,
	}, "test result", nil)

	recorder.Close()

	// Verificar que el archivo existe y tiene contenido
	content, err := os.ReadFile(recordFile)
	if err != nil {
		t.Fatalf("Failed to read recording file: %v", err)
	}

	if len(content) == 0 {
		t.Error("Recording file is empty")
	}

	// Verificar que contiene JSON
	contentStr := string(content)
	if !contains(contentStr, "TestAction") {
		t.Error("Recording doesn't contain action name")
	}
}

func TestProfilePersistence(t *testing.T) {
	ctx := context.Background()

	tempDir := t.TempDir()
	profileName := "test-persistence"

	// Primera sesión: crear perfil
	config1 := DefaultConfig()
	config1.ProfilesBaseDir = tempDir
	config1.ProfileName = profileName
	config1.StealthFlags.Headless = true

	b1, err := Launch(ctx, config1)
	if err != nil {
		t.Fatalf("Failed to launch browser (session 1): %v", err)
	}

	// Verificar perfil creado
	profilePath := filepath.Join(tempDir, profileName)
	if _, err := os.Stat(profilePath); os.IsNotExist(err) {
		t.Fatalf("Profile not created: %s", profilePath)
	}

	b1.Close()

	// Segunda sesión: reutilizar perfil
	config2 := DefaultConfig()
	config2.ProfilesBaseDir = tempDir
	config2.ProfileName = profileName
	config2.StealthFlags.Headless = true

	b2, err := Launch(ctx, config2)
	if err != nil {
		t.Fatalf("Failed to launch browser (session 2): %v", err)
	}
	defer b2.Close()

	// Perfil debe seguir existiendo
	if _, err := os.Stat(profilePath); os.IsNotExist(err) {
		t.Error("Profile was deleted between sessions")
	}
}

// Helper function
func contains(s, substr string) bool {
	return len(s) >= len(substr) && (s == substr || len(s) > len(substr) && containsHelper(s, substr))
}

func containsHelper(s, substr string) bool {
	for i := 0; i <= len(s)-len(substr); i++ {
		if s[i:i+len(substr)] == substr {
			return true
		}
	}
	return false
}