package extractor

import (
	"strings"
	"testing"
)

func TestMergeOptions_StealthDefault(t *testing.T) {
	base := BrowserOptions{Stealth: Bool(true)}
	got := mergeOptions(base, nil)
	if got.Stealth == nil || !*got.Stealth {
		t.Fatal("expected stealth to default to true")
	}
}

func TestMergeOptions_StealthOverrideFalse(t *testing.T) {
	base := BrowserOptions{Stealth: Bool(true)}
	got := mergeOptions(base, []BrowserOptions{{Stealth: Bool(false)}})
	if got.Stealth == nil || *got.Stealth {
		t.Fatal("expected stealth to be overridden to false")
	}
}

func TestMergeOptions_LaunchArgsAppend(t *testing.T) {
	base := BrowserOptions{LaunchArgs: []string{"--arg1"}}
	got := mergeOptions(base, []BrowserOptions{{LaunchArgs: []string{"--arg2", "--arg3"}}})
	if len(got.LaunchArgs) != 3 {
		t.Fatalf("expected 3 launch args, got %d", len(got.LaunchArgs))
	}
	if got.LaunchArgs[0] != "--arg1" || got.LaunchArgs[1] != "--arg2" || got.LaunchArgs[2] != "--arg3" {
		t.Fatalf("unexpected launch args: %v", got.LaunchArgs)
	}
}

func TestMergeOptions_InitScriptsAppend(t *testing.T) {
	base := BrowserOptions{InitScripts: []string{"script1"}}
	got := mergeOptions(base, []BrowserOptions{{InitScripts: []string{"script2"}}})
	if len(got.InitScripts) != 2 {
		t.Fatalf("expected 2 init scripts, got %d", len(got.InitScripts))
	}
	if got.InitScripts[0] != "script1" || got.InitScripts[1] != "script2" {
		t.Fatalf("unexpected init scripts: %v", got.InitScripts)
	}
}

func TestMergeOptions_StealthNilDoesNotOverride(t *testing.T) {
	base := BrowserOptions{Stealth: Bool(true)}
	got := mergeOptions(base, []BrowserOptions{{Stealth: nil}})
	if got.Stealth == nil || !*got.Stealth {
		t.Fatal("expected stealth to remain true when override is nil")
	}
}

func TestStealthChromiumArgs(t *testing.T) {
	if len(stealthChromiumArgs) == 0 {
		t.Fatal("expected at least one chromium stealth arg")
	}
	found := false
	for _, arg := range stealthChromiumArgs {
		if arg == "--disable-blink-features=AutomationControlled" {
			found = true
		}
	}
	if !found {
		t.Fatal("expected --disable-blink-features=AutomationControlled in stealth chromium args")
	}
}

// --- Common scripts ---

func TestStealthCommonScripts_Count(t *testing.T) {
	if len(stealthCommonScripts) != 4 {
		t.Fatalf("expected 4 common stealth scripts, got %d", len(stealthCommonScripts))
	}
}

func TestStealthCommonScripts_WebdriverOverride(t *testing.T) {
	found := false
	for _, s := range stealthCommonScripts {
		if strings.Contains(s, "navigator") && strings.Contains(s, "webdriver") {
			found = true
			break
		}
	}
	if !found {
		t.Fatal("expected a common script that overrides navigator.webdriver")
	}
}

func TestStealthCommonScripts_OuterDimensions(t *testing.T) {
	found := false
	for _, s := range stealthCommonScripts {
		if strings.Contains(s, "outerWidth") && strings.Contains(s, "outerHeight") {
			found = true
			break
		}
	}
	if !found {
		t.Fatal("expected a common script that fixes outerWidth/outerHeight")
	}
}

func TestStealthCommonScripts_PermissionsQuery(t *testing.T) {
	found := false
	for _, s := range stealthCommonScripts {
		if strings.Contains(s, "permissions.query") && strings.Contains(s, "notifications") {
			found = true
			break
		}
	}
	if !found {
		t.Fatal("expected a common script that overrides permissions.query for notifications")
	}
}

func TestStealthCommonScripts_Notification(t *testing.T) {
	found := false
	for _, s := range stealthCommonScripts {
		if strings.Contains(s, "Notification") && strings.Contains(s, "requestPermission") {
			found = true
			break
		}
	}
	if !found {
		t.Fatal("expected a common script that stubs Notification constructor")
	}
}

// --- Chromium scripts ---

func TestStealthChromiumScripts_Count(t *testing.T) {
	if len(stealthChromiumScripts) != 8 {
		t.Fatalf("expected 8 chromium stealth scripts, got %d", len(stealthChromiumScripts))
	}
}

func TestStealthChromiumScripts_Plugins(t *testing.T) {
	found := false
	for _, s := range stealthChromiumScripts {
		if strings.Contains(s, "Chrome PDF Plugin") && strings.Contains(s, "navigator") && strings.Contains(s, "plugins") {
			found = true
			break
		}
	}
	if !found {
		t.Fatal("expected a chromium script that populates navigator.plugins with Chrome entries")
	}
}

func TestStealthChromiumScripts_MimeTypes(t *testing.T) {
	found := false
	for _, s := range stealthChromiumScripts {
		if strings.Contains(s, "mimeTypes") && strings.Contains(s, "application/pdf") {
			found = true
			break
		}
	}
	if !found {
		t.Fatal("expected a chromium script that populates navigator.mimeTypes")
	}
}

func TestStealthChromiumScripts_WindowChrome(t *testing.T) {
	found := false
	for _, s := range stealthChromiumScripts {
		if strings.Contains(s, "window.chrome") && strings.Contains(s, "runtime") {
			found = true
			break
		}
	}
	if !found {
		t.Fatal("expected a chromium script that stubs window.chrome")
	}
}

func TestStealthChromiumScripts_ChromeApp(t *testing.T) {
	found := false
	for _, s := range stealthChromiumScripts {
		if strings.Contains(s, "chrome.app") && strings.Contains(s, "chrome.csi") && strings.Contains(s, "chrome.loadTimes") {
			found = true
			break
		}
	}
	if !found {
		t.Fatal("expected a chromium script that stubs chrome.app, chrome.csi, and chrome.loadTimes")
	}
}

func TestStealthChromiumScripts_WebGLSpoof(t *testing.T) {
	found := false
	for _, s := range stealthChromiumScripts {
		if strings.Contains(s, "37446") && strings.Contains(s, "ANGLE") {
			found = true
			break
		}
	}
	if !found {
		t.Fatal("expected a chromium script that spoofs WebGL renderer with ANGLE strings")
	}
}

func TestStealthChromiumScripts_NavigatorConnection(t *testing.T) {
	found := false
	for _, s := range stealthChromiumScripts {
		if strings.Contains(s, "connection") && strings.Contains(s, "effectiveType") {
			found = true
			break
		}
	}
	if !found {
		t.Fatal("expected a chromium script that stubs navigator.connection")
	}
}

func TestStealthChromiumScripts_CDPCleanup(t *testing.T) {
	found := false
	for _, s := range stealthChromiumScripts {
		if strings.Contains(s, "cdc_") && strings.Contains(s, "delete") {
			found = true
			break
		}
	}
	if !found {
		t.Fatal("expected a chromium script that cleans up CDP artifacts")
	}
}

func TestStealthChromiumScripts_UserAgentStrip(t *testing.T) {
	found := false
	for _, s := range stealthChromiumScripts {
		if strings.Contains(s, "HeadlessChrome") && strings.Contains(s, "userAgent") {
			found = true
			break
		}
	}
	if !found {
		t.Fatal("expected a chromium script that strips HeadlessChrome from user agent")
	}
}

// --- Firefox scripts ---

func TestStealthFirefoxScripts_Count(t *testing.T) {
	if len(stealthFirefoxScripts) != 5 {
		t.Fatalf("expected 5 firefox stealth scripts, got %d", len(stealthFirefoxScripts))
	}
}

func TestStealthFirefoxScripts_WebdriverHardening(t *testing.T) {
	found := false
	for _, s := range stealthFirefoxScripts {
		if strings.Contains(s, "getOwnPropertyDescriptor") && strings.Contains(s, "webdriver") {
			found = true
			break
		}
	}
	if !found {
		t.Fatal("expected a firefox script that hardens navigator.webdriver via getOwnPropertyDescriptor")
	}
}

func TestStealthFirefoxScripts_WebGLSpoof(t *testing.T) {
	found := false
	for _, s := range stealthFirefoxScripts {
		if strings.Contains(s, "37446") && strings.Contains(s, "Mesa DRI") {
			found = true
			break
		}
	}
	if !found {
		t.Fatal("expected a firefox script that spoofs WebGL renderer with Mesa strings")
	}
}

func TestStealthFirefoxScripts_MozInnerScreen(t *testing.T) {
	found := false
	for _, s := range stealthFirefoxScripts {
		if strings.Contains(s, "mozInnerScreenX") && strings.Contains(s, "mozInnerScreenY") {
			found = true
			break
		}
	}
	if !found {
		t.Fatal("expected a firefox script that spoofs mozInnerScreenX/mozInnerScreenY")
	}
}

func TestStealthFirefoxScripts_HardwareConcurrency(t *testing.T) {
	found := false
	for _, s := range stealthFirefoxScripts {
		if strings.Contains(s, "hardwareConcurrency") {
			found = true
			break
		}
	}
	if !found {
		t.Fatal("expected a firefox script that normalizes navigator.hardwareConcurrency")
	}
}

func TestStealthFirefoxScripts_PDFjsPlugins(t *testing.T) {
	found := false
	for _, s := range stealthFirefoxScripts {
		if strings.Contains(s, "PDF.js") && strings.Contains(s, "plugins") {
			found = true
			break
		}
	}
	if !found {
		t.Fatal("expected a firefox script that provides PDF.js plugin entry")
	}
}

// --- Cross-category validation ---

func TestStealthScripts_NoOverlap(t *testing.T) {
	all := make(map[string]string) // script -> category
	for _, s := range stealthCommonScripts {
		all[s] = "common"
	}
	for _, s := range stealthChromiumScripts {
		if cat, ok := all[s]; ok {
			t.Fatalf("chromium script also appears in %s category", cat)
		}
		all[s] = "chromium"
	}
	for _, s := range stealthFirefoxScripts {
		if cat, ok := all[s]; ok {
			t.Fatalf("firefox script also appears in %s category", cat)
		}
	}
}

func TestStealthCommonScripts_NoChromiumMarkers(t *testing.T) {
	chromiumMarkers := []string{"window.chrome", "chrome.app", "chrome.csi", "chrome.loadTimes", "HeadlessChrome", "cdc_", "Chrome PDF Plugin", "ANGLE"}
	for _, s := range stealthCommonScripts {
		for _, marker := range chromiumMarkers {
			if strings.Contains(s, marker) {
				t.Fatalf("common script contains Chromium-specific marker %q", marker)
			}
		}
	}
}

func TestStealthCommonScripts_NoFirefoxMarkers(t *testing.T) {
	firefoxMarkers := []string{"mozInnerScreen", "Mesa DRI", "PDF.js"}
	for _, s := range stealthCommonScripts {
		for _, marker := range firefoxMarkers {
			if strings.Contains(s, marker) {
				t.Fatalf("common script contains Firefox-specific marker %q", marker)
			}
		}
	}
}

func TestStealthChromiumScripts_NoFirefoxMarkers(t *testing.T) {
	firefoxMarkers := []string{"mozInnerScreen", "Mesa DRI", "PDF.js"}
	for _, s := range stealthChromiumScripts {
		for _, marker := range firefoxMarkers {
			if strings.Contains(s, marker) {
				t.Fatalf("chromium script contains Firefox-specific marker %q", marker)
			}
		}
	}
}

func TestStealthFirefoxScripts_NoChromiumMarkers(t *testing.T) {
	chromiumMarkers := []string{"window.chrome", "chrome.app", "chrome.csi", "chrome.loadTimes", "HeadlessChrome", "cdc_", "Chrome PDF Plugin", "ANGLE"}
	for _, s := range stealthFirefoxScripts {
		for _, marker := range chromiumMarkers {
			if strings.Contains(s, marker) {
				t.Fatalf("firefox script contains Chromium-specific marker %q", marker)
			}
		}
	}
}