package webkit

/*
#cgo pkg-config: webkitgtk-6.0
#include <webkit/webkit.h>
#include <stdlib.h>
*/
import "C"
import (
	"unsafe"

	javascriptcore "github.com/diamondburned/gotk4-webkitgtk/pkg/javascriptcore/v6"
	webkit "github.com/diamondburned/gotk4-webkitgtk/pkg/webkit/v6"
	"github.com/diamondburned/gotk4/pkg/core/glib"
)

// EvaluateJavascript executes JavaScript code in the WebView in the default world
// This is a wrapper around webkit_web_view_evaluate_javascript that wasn't generated by gotk4
func EvaluateJavascript(view *webkit.WebView, script string) {
	EvaluateJavascriptInWorld(view, script, "")
}

// EvaluateJavascriptInWorld executes JavaScript code in a specific world
// Pass empty string for worldName to use the main/page world
func EvaluateJavascriptInWorld(view *webkit.WebView, script string, worldName string) {
	if view == nil {
		return
	}

	// Get the underlying GObject pointer from the gotk4 WebView
	obj := glib.BaseObject(view)
	if obj == nil {
		return
	}

	nativePtr := obj.Native()
	if nativePtr == 0 {
		return
	}

	cScript := C.CString(script)
	defer C.free(unsafe.Pointer(cScript))

	var cWorldName *C.char
	if worldName != "" {
		cWorldName = C.CString(worldName)
		defer C.free(unsafe.Pointer(cWorldName))
	}

	// Call webkit_web_view_evaluate_javascript
	// Parameters: web_view, script, length, world_name, source_uri, cancellable, callback, user_data
	C.webkit_web_view_evaluate_javascript(
		(*C.WebKitWebView)(unsafe.Pointer(nativePtr)),
		cScript,
		C.gssize(-1), // -1 means null-terminated string
		cWorldName,   // world_name (NULL for main world, or specific world name)
		nil,          // source_uri (NULL)
		nil,          // cancellable (NULL)
		nil,          // callback (NULL for fire-and-forget)
		nil,          // user_data (NULL)
	)
}

// JSCValueToString converts a JSCValue from a GTK signal to a Go string
func JSCValueToString(value interface{}) string {
	if value == nil {
		return ""
	}

	// Type assert to *javascriptcore.Value from gotk4 bindings
	jscValue, ok := value.(*javascriptcore.Value)
	if !ok {
		return ""
	}

	// Use the gotk4 String() method to convert JSCValue to string
	return jscValue.String()
}