import sys
from PyQt5.QtCore import QUrl
from PyQt5.QtWidgets import QApplication, QMainWindow, QTabWidget, QVBoxLayout, QWidget, QLineEdit, QAction, QToolBar
from PyQt5.QtWebEngineWidgets import QWebEngineView

class BrowserTab(QWebEngineView):
    def __init__(self, url="https://google.com"):
        super().__init__()
        self.load(QUrl.fromUserInput(url))  # Convertir URL de str a QUrl

class BrowserApp(QMainWindow):
    def __init__(self):
        super().__init__()
        self.setWindowTitle("Navegador Web con PyQt5")
        self.resize(1024, 768)

        # Barra de herramientas para la URL
        self.toolbar = QToolBar()
        self.addToolBar(self.toolbar)

        # Campo de entrada para la URL
        self.url_bar = QLineEdit()
        self.url_bar.returnPressed.connect(self.navigate_to_url)
        self.toolbar.addWidget(self.url_bar)

        # Botón de nueva pestaña
        new_tab_action = QAction("Nueva pestaña", self)
        new_tab_action.triggered.connect(self.add_new_tab)
        self.toolbar.addAction(new_tab_action)

        # Contenedor de pestañas
        self.tabs = QTabWidget()
        self.tabs.setDocumentMode(True)
        self.tabs.tabCloseRequested.connect(self.close_current_tab)
        self.setCentralWidget(self.tabs)

        # Añadir una primera pestaña
        self.add_new_tab("https://google.com")

    def add_new_tab(self, url="https://google.com"):
        new_tab = BrowserTab(url)
        i = self.tabs.addTab(new_tab, "Nueva Pestaña")
        self.tabs.setCurrentIndex(i)
        new_tab.urlChanged.connect(self.update_url_bar)
        self.url_bar.setText(url)

    def close_current_tab(self, index):
        if self.tabs.count() > 1:
            self.tabs.removeTab(index)

    def navigate_to_url(self):
        url = self.url_bar.text()
        if not url.startswith("http"):
            url = "http://" + url
        # Navegar usando QUrl
        self.tabs.currentWidget().setUrl(QUrl.fromUserInput(url))

    def update_url_bar(self, qurl):
        self.url_bar.setText(qurl.toString())

if __name__ == "__main__":
    app = QApplication(sys.argv)
    browser = BrowserApp()
    browser.show()
    sys.exit(app.exec_())